Voluntary Specification, Performance Requirements and Test Procedures for Organic Coatings on Fiber Reinforced Thermoset Profiles

Transcription

1 FMC Finishes Committee Approval FSC Approval Product Group Approval Approved via Ballot # Approved via Ballot Out for Ballot (# ) PUBLICATION NO. AAMA 623-XX Draft #17 Dated 11/30/17 Voluntary Specification, Performance Requirements and Test Procedures for Organic Coatings on Fiber Reinforced Thermoset Profiles

2 TABLE OF CONTENTS 0.0 PREFACE SCOPE PURPOSE REFERENCED STANDARDS DEFINITIONS GENERAL TEST SPECIMENS TESTS Test Report And Results This voluntary specification was developed by representative members of AAMA as advisory information and published as a public service. AAMA disclaims all liability for the use, application or adaptation of materials published herein. AAMA 623-XX, Draft #17, Dated 11/30/17 Copyright 2018 American Architectural Manufacturers Association 1900 East Gold Road, Suite 1250, Schaumburg, IL Phone: 847/ customerservice@aamanet.org Web Site: Page i

3 0.0 PREFACE The architectural community has recognized the outstanding attributes associated with fiber reinforced thermoset profiles for windows, doors and other related building products. Many of these profiles have organic applied coatings to provide selected colors and enhance the durability. There are three performance specifications for applied organic coatings on fiber reinforced thermoset profiles: AAMA 623, Voluntary Specification, Performance Requirements and Test Procedures for Organic Coatings on Fiber Reinforced Thermoset Profiles; AAMA 624, Voluntary Specification, Performance Requirements and Test Procedures for High Performance Organic Coatings on Fiber Reinforced Thermoset Profiles; and AAMA 625, Voluntary Specification, Performance Requirements and Test Procedures for Superior Performance Organic Coatings on Fiber Reinforced Thermoset Profiles. 1.0 SCOPE 1.1 This specification describes test procedures and performance requirements for organic coatings applied to fiber reinforced thermoset profiles for windows, doors and similar other related building products. 1.2 This specification covers factory applied coatings. 1.3 The primary units of measure in this document are metric. The values stated in SI units are to be regarded as the standard. The values given in parentheses are for reference only. 1.4 This document was developed in an open and consensus process and is maintained by representative members of AAMA as advisory information. 2.0 PURPOSE This specification is intended to assist the architect, owner and contractor to specify and obtain factory applied organic coatings which will provide a good level of performance in terms of film integrity, exterior durability and general appearance over a period of many years. 3.0 REFERENCED STANDARDS AAMA 623-XX, Draft #17, Dated 11/30/17 Page 1

4 3.1 References to the standards listed below shall be to the edition indicated. Any undated reference to a code or standard appearing in the requirements of this standard shall be interpreted as to referring to the latest edition of that code or standard. 3.2 American Architectural Manufacturers Association (AAMA) AAMA , Voluntary Specification, Performance Requirements and Test Procedures for High Performance Organic Coatings on Fiber Reinforced Thermoset Profiles AAMA , Voluntary Specification, Performance Requirements and Test Procedures for Superior Performance Organic Coatings on Fiber Reinforced Thermoset Profiles AAMA , Voluntary Specification and Test Method for Sealants AAMA AG-0913, AAMA Glossary 3.3 ASTM International (ASTM) ASTM C207-06(2011), Standard Specification for Hydrated Lime for Masonry Purposes ASTM D , Standard Test Method for Specular Gloss ASTM D659-86, Standard Test Method of Evaluating Degree of Chalking of Exterior Paints ASTM D (2009), Standard Test Method for Evaluating Degree of Blistering of Paints ASTM D (2009), Standard Practice for Visual Appraisal of Colors and Color Differences of Diffusely- Illuminated Opaque Materials, ASTM D b15e115a, Standard Practice for Calculation of Color Tolerances and Color Differences from Instrumentally Measured Color Coordinates ASTM D , Standard Practice for Testing Water Resistance of Coatings in 100% Relative Humidity ASTM D a( ), Standard Practice for Detergent Resistance of Organic Finishes ASTM D e02, Standard Test Methods for Measuring Adhesion by Tape Test ASTM D (2011)e2, Standard Test Method for Film Hardness by Pencil Test AAMA 623-XX, Draft #17, Dated 11/30/17 Page 2

5 ASTM D a(2013), Standard Test Method for Measurement of Dry Film Thickness of Protective Coating Systems by Destructive, Cross-Sectioning Means ASTM D (2015), Standard Test Methods for Evaluating the Degree of Chalking of Exterior Paint Films ASTM D e1, Standard Test Method for Pull-Off Strength of Coatings Using Portable Adhesion Testers ASTM D4585/D4585M-13-07, Standard Practice for Testing the Water Resistance of Coatings Using Controlled Condensation ASTM D (2008), Standard Test Method for Measuring Adhesion of Organic Coatings to Plastic Substrates by Direct Tensile Testing ASTM D , Standard Test Method for Impact Resistance of Flat, Rigid Plastic Specimen by Means of a Striker Impacted by a Falling Weight (Gardner Impact) ASTM G90-10, Standard Practice for Performing Accelerated Outdoor Weathering of Nonmetallic Materials Using Concentrated Natural Sunlight ASTM G179-04(2011), Standard Specification for Metal Black Panel and White Panel Temperature Devices for Natural Weathering Tests 4.0 DEFINITIONS 4.1 The terms "film" and "coating" are used interchangeably in this specification and are defined as meaning the layer of organic material applied to the surface of the fiber reinforced thermoset profiles. 4.2 Checking A kind of coating failure in which many small cracks appear in the surface of the coating. 4.3 Crazing - aa network of checks or cracks appearing on a coated surface. Crazing is a phenomenon that frequently precedes fracture in some glassy thermoplastic polymers. Crazing happens when a glaze or coating is under tension For all additional definitions, please refer to the AAMA Glossary (AG-09132). 5.0 GENERAL 5.1 To qualify as meeting this specification, products tested shall meet all requirements as specified herein. AAMA 623-XX, Draft #17, Dated 11/30/17 Page 3

6 5.2 Applied coatings shall be visibly free from flow lines, streaks, blisters or other surface imperfections in the dryfilm state on exposed surfaces when observed at a distance of 3 m (10 ft) under a maximum of 860 Lux (80-foot candles) of light from the coated surface, and inspected at an angle of 90 to the surface so as to eliminate direct reflection. 5.3 Total dry-film thickness, as measured in accordance with ASTM D4138 or ASTM D5796, on exposed surfaces, except inside corners and channels, shall meet the coating manufacturer s recommendations. The manufacturer s targeted nominal thickness and allowable tolerance shall be noted in the lab report and the coating shall be measured for compliance to this nominal value. 5.3 Total dry-film thickness on exposed surfaces, except inside corners and channels, shall be a minimum of 20 microns (0.8 mils) total film thickness, or greater if required by the coating manufacturer Measurement areas over a single test specimen taken according to ASTM D4138 shall be evenly dispersed over the significant exposed area. 80% of those measurements shall meet or exceed the minimum dry film thickness. In no case shall measurements be below 17 microns (0.68 mil) or 85% of film thickness specified.required by the coating manufacturer. NOTE 1: Due to the complexities and limitations of application equipment, it may not be possible to achieve minimum recommended dry film thickness on all areas of a profile, such as inside corners and channels. For details of these affected areas, contact the coating applicator prior to finishing. 5.4 Cleaning and surface preparation shall be as recommended by the coating and substrate suppliers to to ensure compliance with the performance requirements. 5.5 Minor scratches and blemishes shall be repairable with the coating manufacturer s recommended product or system. Such repair product or system shall match the original finish for color and gloss. Specimen testing of the repair procedure shall demonstrate adhesion to the original coating when tested as outlined in Section 7.4.1, Dry Adhesion. NOTE 2: The size and number of touch-up repairs should be kept to a minimum. 5.6 Sealant used in contact with an organic coating shall be compatible with the organic coating and meets the performance requirements of the AAMA 800 Voluntary Specifications and Test Methods for SealantsSealant Specification. There shall be no evidence of deleterious effects on the organic coating such as staining, coating separation, lifting, discoloration or loss of adhesion of the coating from the substrate. NOTE 3: The fabricator of the finished products should consult the sealant supplier in selection of the sealant which will exhibit adequate adhesion to the coated surface. Panel specimens of the specific coating to be used should be AAMA 623-XX, Draft #17, Dated 11/30/17 Page 4

7 submitted to the sealant manufacturer for tests and recommendations. Peel adhesion testing as described in AAMA 800 is suggested. 5.7 Color measurements shall be madespecified in accordance with AAMA CMR-1.use the Hunter scale. Also see Section TEST SPECIMENS A minimum of 30 specimens shall be representative of the fiber reinforced thermoset substrates used in production. Submitted test specimens shall be a minimum of 150 mm (6 in) long and preferably 50 mm (2 in) wide with flat coated surfaces on which to conduct instrument measurements. The coating applicator shall indicate exposed surfaces or submit drawings. Tests shall be performed on exposed areas as indicated on drawings or as marked on test specimens. 7.0 TESTS 7.1 Color Uniformity Principle The purpose of this test is to provide a method to ensure colors ofin production applied coatings match the expectations of the specifier. Although instrumental color measurements are recommended in many applications, visual observations under controlled lighting conditions are useful in production environments for determining significant color mismatches and uniformity throughout a profile Procedure Check random specimens visually under a CIE Standard Illuminant D65/10 uniform light source, according to ASTM D1729such as a MacBeth daylight lamp or the North daylight sky.. Specimens shall meet minimum dry-film thickness requirements and should be viewed head-onperpendicular to the coated surface Performance Color uniformity shall be consistent with the color range or numerical value as established between the approval source and the applicator. NOTE 4: Color and finish appearance may vary upon factory application due to differences in equipment, line conditions or day-to-day process variations. It is strongly recommended that final color approval limits be made with actual production line specimens or mock-ups, not laboratory prepared color panels. Since flake orientation AAMA 623-XX, Draft #17, Dated 11/30/17 Page 5

8 contributes to color uniformity, pearlescent, mica and metallic flake colors do present the need for more stringent control in application and consideration during project design and installation. 7.2 Specular Gloss Principle Gloss represents the ability of a surface to reflect light at the same angle of incidence as the incoming source. High gloss surfaces scatter less light than low gloss surfaces. A gloss specification can be important because visual perception of color can be significantly affected by the glossiness of the surface. Furthermore, change in gloss of a surface over time may be an early indicator of degradation of, or physical damage to the finish Procedure Measure the gloss in accordance with ASTM D523, using a 60 Gloss Meter and using reflective specular included readings (RSIN) Performance Gloss values shall fall within the range established between the approval source and the applicator, or +/- 5 units of the average if no range is provided. Gloss values on the test specimens shall be within ± 5 units of manufacturer s recommended values. NOTE 35: Standard Gloss Range Reference Values are: Gloss Specular Gloss Units High 80 - Over Medium Low 19 or less 7.3 Dry Film Hardness Principle ASTM D3363 describes a procedure for determining the dry film hardness of a coating by using a series of standard pencil leads of varying hardness to attempt to scratch the surface. The film hardness rating is determined by the hardest highest rated pencil lead that fails to penetrate or gouge the coating film all the way to the substrate. This is a different rating from a scratch rating which is determined by the hardest highest rated pencil lead that fails to scratch or indent the surface Procedure AAMA 623-XX, Draft #17, Dated 11/30/17 Page 6

9 Perform testing on a flat portion of the profile specimen. Ensure the specimen is firmly held in place.when testing profiles, either cut a section of the specimen to create a flat area for testing or support the specimen such that it is held firmly in place. Perform the test according to ASTM D3363. For certification purposes, ambient conditions in ASTM D3363 shall apply; for quality control purposes, ambient conditions of approximately 18 o C to 27 o C (65 o F to 80 o F) are acceptable. Wood pencils or sticks of leads with a holder may be used. A range of lead hardness will be used. Maximum hardness should consider the dry film hardness represented by the coating manufacturer. Expose approximately 5 to 6 mm (3/16 to 1/4 in) of undisturbed, unmarked, smooth cylindrical lead from the pencil or lead holder. To prepare the tip, place the lead at an angle of 90 to abrasive paper (grit No. 400) and rub the lead until a flat, smooth, and circular cross-section is obtained, free of chips or nick in the edge of the cross-section. Place the coated substrate on a level, firm, horizontal surface. Assure 5 to 6 mm of the lead is exposed beyond the holder or the wood of the pencil. Beginning with the hardest lead, hold the pencil firmly with the lead against the coating film at a 45 angle (point away from the operator) and push away from the operator. The suggested length of the stroke is 6.5 mm (0.25 in). Exert sufficient uniform pressure downward and forward either to cut or scratch the coating film or to crumble the edge of the lead. Repeat the process down the hardness scale until a pencil is found that will not cut through the film to the substrate for a distance of at least 3 mm (1/8 in). Record the lead hardness. Minimum allowable hardness for this test is grade H. Make a minimum of two determinations of the lead hardness for both scratch and gouge. (ReferencASTM D3363.) Strip wood from Berol Eagle Turquoise Pencil, or equivalent grade H minimum hardness, leaving a full diameter of lead exposed to length of 6 mm (1/4 in) minimum to 10 mm (3/8 in) maximum. Flatten the end of the lead 90 to pencil axis using fine-grit sand or emery paper. Hold the pencil at a 45 angle to the film surface and push forward about 6 mm (1/4 in) using as much downward pressure as can be applied without breaking the lead. (Reference ASTM D3363.) Performance There shall be no rupture of through the film to the substrate when conducting the test with an H rated lead. Report the make and grade of the pencil, or lead used in testing., Reportfor both the gouge or cut and scratch hardness. 7.4 Film Adhesion Principle AAMA 623-XX, Draft #17, Dated 11/30/17 Page 7

10 ASTM D3359 describes test procedures to determine how well a coating film adheres to its substrate. Method B requires cutting parallel lines with a sharp blade and adhering a specific tape to the resulting grid pattern, which is often referred to as a cross hatch. The tape is pulled off at a specified angle. Any loss of coating film within the grid is quantified and a rating made accordingly. This method is used for coating thicknesses less than 125 micron (5.0 mils), referred to hereafter as thin coatings. For coating film thicknesses of 125 microns (5.0 mils) or greater, referred to hereafter as thick coatings, testing is performed according to ASTM D4541 or D5179, which describe similar test procedures to determine how well a coating film adheres to its substrate using a dolly pull method. A round metal plug (dolly) is adhered to the surface with a strong adhesive. In the method referenced in this document, a pulling force is applied to the dolly until material delaminates from the specimen. For a coating to pass this test, the surface area adhered to the dolly must contain substrate material and not solely the coating film Dry Adhesion Procedure for Thin and Thick Coatings Dry Adhesion Procedure for Thin Coatings When testing profiles, either cut a section of the specimen to create a flat area for testing or support the specimen such that it is held firmly in place while making the cuts For coating thicknesses less than 125 micron (5.0 mils), perform the test according to ASTM D3359 Method B. For coatings with a total dry film thickness of 50 microns (2.0 mils) or less, make 11 parallel cuts, 1 mm (.039 inches) apart through the film; then make 11 similar cuts at a 90 degree angle to and across the first 11. For coatings with a total dry film thickness between 50 micron (2.0 mils) and 125 micron (5.0 mils), space the cuts 2 mm (0.079 in) apart and make six parallel cuts through the film; then make six similar cuts at a 90 degree angle to and across the first six The following exceptions and clarifications to ASTM D3359 Method B apply. When making the cuts, cut at a 45 degree orientation to the fibers and cut with sufficient pressure to penetrate to the substrate while minimizing scoring of the substrate. Pull the tape at a 90 degree angle relative to the specimen instead of the angle specified in ASTM D3359. For certification purposes, ambient conditions in ASTM D3359 shall apply; for quality control purposes, ambient conditions of approximately 18 C to 27 C (65 F to 80 F) are acceptable. For coatings with a total dry film thickness of 50 microns (2.0 mils) or less, make 11 parallel cuts, 1 mm(.039 inches) (1/ in) apart through the film at 45 degree orientation to the fibers with a razor sharp blade cutting device and with sufficient pressure to cut coating and minimize scoring of substrate.. Make 11 similar cuts at a 90 angle to and crossing the first 11 cuts. Apply tape (CHT-1 or agreed upon ASTM equivalent) over area of the cuts by AAMA 623-XX, Draft #17, Dated 11/30/17 Page 8

11 pressing down firmly against the coating to eliminate voids and air pockets. Then, sharply pull the tape off at a right angle to the plane of the surface being tested. Test pieces shall be at an ambient temperature approximately 18 o C to 27 o C (65 o F to 80 o F). (Reference ASTM D3359, Method B, Tape Pull.) Dry Adhesion Performance of Thin Coatings Count the number of squares that exhibit loss of coating. A minimum rating of 4B per ASTM D3359 shall be achieved. Report the loss of adhesion as a percentage of the total squares of the cross hatch. There shall be no removal of film under tape within or outside of cross-hatched area or blistering anywhere on the test specimen. Squares exhibiting substrate cohesive failure shall not be included as affected area. If more than 10% of squares exhibit substrate cohesive failure, testing shall be repeated with less scoring pressure. Report the loss of adhesion as a percentage of squares affected (i.e. 10 squares lifted as 10% failure). There shall be no removal of film under tape within or outside of cross-hatched area or blistering anywhere on the test specimen. Squares exhibiting substrate cohesive failure shall not be included as affected area. If more than 10% of squares exhibit cohesive failure, testing shall be repeated with less scoring pressure. Report the loss of adhesion as a percentage of squares affected (i.e. 10 squares lifted as 10% failure) Procedure For coatings with a total dry film thickness between 50 micron (2.0 mils) and 125 micron (5.0 mils), space the cuts 2 mm (1/ in) apart and make six parallel cuts.through the filmat 45 degree orientation to the fibers. with sufficient pressure to cut coating and minimize scoring of substratemake six similar parallel cuts at a 90º angle to and across the first six cuts. Perform the test procedure as described in Section Dry Adhesion Procedure for Thick Coatings For coatings with a total dry film thickness of 125 microns (5.0 mils) or greater, use the dolly pull test method in accordance with ASTM D5179 or ASTM D4541. Apply a minimum of six dollies, which can be made from aluminum or steel, to a section large enough to perform the test and covering a minimum of 1.83 linear meters (8 linear feet) of profile. Allow for the adhesive manufacturer s recommended cure time and temperature before conducting the pull test. A minimum of six valid pulls shall be achieved on the test surface. A valid pull consists of the adhesion of the coating to a minimum of 50% of the dolly s surface area Dry Adhesion Performance of Thick Coatings The bonded surface shall exhibit delamination of substrate fiber, resin, fillers or a combination of component from the profile. Of the six pulls, a minimum of five shall exhibit some evidence of substrate removal for passing the adhesion performance. AAMA 623-XX, Draft #17, Dated 11/30/17 Page 9

12 Report the loss of adhesion as a percentage of squares affected (i.e. as a percentage of the 25 squares).there shall be no removal of film under tape within or outside of cross-hatched area or blistering anywhere on test specimen. Squares exhibiting substrate cohesive failure shall not be included as affected area. If more than 10% of squares exhibit cohesive failure, testing shall be repeated with less scoring pressure.report the loss of adhesion as a percentage of squares affected (i.e. as a percentage of the 25 squares) Procedure For coatings with a total dry film thicknesses at and overof 125 microns (5.0 mils) or greater, use the dolly pull test method in accordance with ASTM D5179 and ASTM D4541. Use a suitable adhesive to bond the test dollies, which can be made of aluminum or stainless steel, to the surface of the coating and providing a bond strength greater than the adhesive force of the coating to the substrate. Apply a minimum of six dollies to a section capable in size to perform the test and covering a minimum of 1.83 linear meters (8 linear feet) of profile. Allow for the adhesive manufacturer s recommended cure time and temperature before conducting the pull test Performance A minimum of six valid pulls shall be achieved on the test surface. A valid pull consists of the adhesion of the coating to a minimum of 50% of the dolly s surface area. Any adhesive failure in the bond between the dolly and coating shall not be in excessive of 50% of the dolly surface area. The bonded surface shall exhibit delamination of substrate fiber, resin, fillers or a combination of component from the profile. Of the six pulls, a minimum of five shall exhibit some evidence of substrate removal for passing the adhesion performance Wet Adhesion Wet Adhesion Procedure for Thin and Thick Coatings Immerse the specimen in distilled or deionized water at 38 o C (100 F) for 24 hours. Remove and wipe specimen dry. Repeat the adhesion test specified in Section or Section within fivethirty30 minutes of the specimen being dryremoved from water. Immerse the specimen in distilled or deionized water at 38 o C (100 F) for 24 hours. Remove and wipe specimen dry. Repeat the adhesion test specified in Section , Section or Section within five minutes of the specimen being dry. Commented [TBaskin1]: Should read 38 o C ±2º C? Wet Adhesion Performance of Thin Coatings For coatings with a total dry film thickness of 50 microns (2.0 mils) or less, there shall be no removal of film under the tape within or outside of the cross-hatched area or blistering anywhere on the test specimen. Report the loss of adhesion as a percentage of squares affected (i.e. 10 squares lifted as 10% failure). Performance shall meet requirements specified in Section AAMA 623-XX, Draft #17, Dated 11/30/17 Page 10

13 Performance For coatings with a total dry film thickness between 50 microns (2.0 mils) and 125 microns (5.0 mils), there shall be no removal of film under the tape with or outside to the cross hatched area or blistering anywhere on the test specimen. Report the loss of adhesion as a percentage of the 25 squares Wet Adhesion Performance for Thick Coatings Performance shall meet requirements specified in Section For coatings with a total dry film thicknessat andofover 125 microns (5 mils) or greater, a minimum of five test pulls of six valid test dollies shall exhibit substrate removal per Section NOTE 5: Fractured substrate adhering to the back of the coating should not be considered a coating failure when the tape test is used. NOTE 6: Color change may occur and is not part of this test. 7.5 Direct Impact Principle ASTM D5420 describes a method to compare relative ability of a material to resist deformation caused by physical impact on a small area. In finishes standards, this test is useful in determining the ability of a coating or laminate to maintain adhesion to the substrate after impact and applying a tape pull off test Procedure Perform the test using a falling weight impactor, such as a Gardner Impact tester, with a 18 N-m (160 in-lb) range. Useing a 16 mm (5/8 in) diameter round-nosed impact tester tup, and a 16.3 mm support plate. This corresponds to geometry GC in Table 1 of ASTM D5420.,Using a 1.8 kg (4 lb) weight, aaapply a 9 N-m (80 in-lb) load directly to the coated surface of the test specimen. Apply tape specified in ssection 7.4 to the coating (of sufficient size to cover the test area) by pressing down firmly against the area to be tested to eliminate voids and air pockets. Sharply pull the tape off at a right angle to the plane of the surface being tested. The test specimen temperature shall be 18 o C to 27 o C (65 o F to 80 o F) Performance There shall be no removal of film from substrate. NOTE 76: Minute cracking at the perimeter of the impact area of the test specimen is permissible, but no coating pick-off should be apparent. Performance does not include substrate fracture. AAMA 623-XX, Draft #17, Dated 11/30/17 Page 11

14 Note: There is not enough specificity in the above paragraph to run the test. It needs to specify the height and weight and not just the load (you can get the same load with different weight and height combinations--2 lb, 4 lb, 8 lb are common weights) and the diameter of the specimen support plate 7.6 Chemical Resistance Muriatic Acid Resistance (15 Minute Spot Test) Principle: This test is designed to ensure coatings are resistant to cleaning products containing acids used to remove mineral deposits or construction mortars. Specimens are exposed to muriatic (hydrochloric) acid, rinsed, and evaluated for loss of adhesion and degraded color and gloss Procedure Apply 10 drops of 10% (by volume) solution of muriatic acid (37% commercial grade hydrochloric acid) in tap water on the specimen and cover with a watch glass, convex side up. Acid solution and test shall be conducted at 18 o C to 27 o C (65 o F to 80 o F). After 15 minute exposure, wash off with running tap water. Conduct a minimum of four tests Performance There shall be no blistering. When comparing the exposed paintedfinish surface to the unexposed surface, there shall be a minimum 90% gloss retention and a maximum color change of 5 E Units calculated in accordance with ASTM D Mortar Resistance (24 Hour Pat Test) Principle Because finishes may be exposed to mortar during building construction or maintenance, this method was developed to determine how well a finish resists permanent adhesion of mortar and changes in appearance upon removal of mortar. In the test, mortar is applied and allowed to condition at high humidity before it is removed from the surface by a damp cloth and a mild acid solution. Then the appearance is evaluated for loss of gloss and color change Procedure AAMA 623-XX, Draft #17, Dated 11/30/17 Page 12

15 Prepare mortar by mixing 75 g (2.6 oz) of building lime (see ASTM C207) and 225 g (8 oz) of dry sand, both passing through a 10-mesh wire screen and sufficient water, approximately 100 g (3.5 oz), to make a soft paste. Immediately apply wet pats of mortar about 1300 mm 2 (2 in 2 ) in area and 12 mm (1/2 in) in thickness to coated specimens which have been properly cured per the supplier s recommendation. Immediately expose test sections for 24 hours to >95100% relative humidity at 38 C±2º C (100 o F). Conduct a minimum of four tests Performance Mortar shall dislodge easily from paintedfinish surface, and any residue shall be removable with a damp cloth. Any lime residue shall be easily removed with the 10% muriatic acid solution described in Section There shall be no visible loss of film adhesion, i.e. blistering, delamination and/or bubbling. When comparing the exposed paintedfinished surface to the unexposed surface, there shall be a minimum of 90% gloss retention and a maximum color change of 5 E Units calculated in accordance with ASTM D2244. NOTE 7: Reference earlier sections for methods of measuring gloss and color. 7.7 Detergent Resistance Principle This test, described in ASTM D2248, is used to determine the ability of a finish to maintain adhesion to the substrate and to resist color and gloss change when subjected to a standardized detergent. This test is designed to accelerate the effects of repeated cleaning of a finish on a fenestration product Procedure Prepare a 3% (by weight) solution of detergent as prescribed in ASTM D2248 and distilled water. Immerse 50% of the surface of at least two test specimens in the detergent solution at 38 ±12º C C (100 F) for 72 hours. Withdrawn the specimens, wash with distilled water, and allow the specimens to dry. Immediately apply tape (CHT-1 or agreed upon ASTM equivalent) 20 mm (3/4 in) wide by pressing down firmly against the coating to eliminate voids and air pockets. Place the tape longitudinally along the entire length of the test specimens. If blisters are visible, then the blistered area shall be taped and rated. Sharply pull the tape off at a right angle to the plane of the surface being tested, per ASTM D3359. A typical solid detergent composition is as follows. AAMA 623-XX, Draft #17, Dated 11/30/17 Page 13

16 Raw Materials Parts by Weight Tetrasodium pyrophosphate (Na4P2O7) anhydrous 53.0 Sodium sulfate (Na2SO4), anhydrous 19.0 Sodium metasilicate (Na2SiO3), anhydrous 7.0 Sodium carbonate (Na2CO3), anhydrous 1.0 Sodium salt of a linear alkylarylsulfonate 90% flake grade 20.0 TOTAL TABLE 1: Needs TitleDetergent Composition Performance here shall be no loss of adhesion of the film to the fiber reinforced thermoset profiles when tested in accordance with Section 7.4.2, There shall be no loss of adhesion of the coating film to the fiber reinforced thermoset profiles, and no blistering of the coating., and wwhen comparing the exposed paintedfinish surface to the unexposed surface, there shall be a minimum of 95% gloss retentionmaximum gloss change of +/-10% and a maximum color change of 52 E Units (Hunter) -of color change calculated in accordance with ASTM D2244 when comparing measurements on the detergent exposed paintedfinish surface and the unexposed surface. NOTE 8: New colors may be qualified without the chemical exposure testing in this section provided the colors are produced with the same pigments, in the same resin system as a color on which passing test data is available and which is within ±10 Hunter Units in lightness (L). 7.8 Humidity Resistance Principle The ability to resist moisture is a critical function of any finish. This test subjects specimens to condensing humidity for an extended period before they are visually evaluated for the formation of blisters which indicate loss of adhesion Procedure Expose the specimen in a controlled heat-and-humidity cabinet for 1500 hours at 38 o C ±2º C (100 o F) and 100% RHcondensing humidity (greater than 95% RH) with cabinet operated in accordance with ASTM D2247 or ASTM D Performance There shall be no formation of blisters to extent greater than "Few" blisters Size No. 8 as shown in Figure No. 4 of ASTM D714. AAMA 623-XX, Draft #17, Dated 11/30/17 Page 14

17 7.9 Cold Crack Cycle Principle This test determines the effect of freezing and thawing on a finish. Specimens are placed in a condensing humidity environment for a day24 hours, then transferred to a freezer at -23 C. Specimens are then allowed to thaw for 4 hours. This cycle is repeated 15 times and then specimens are evaluated visually for cracks, blisters, or any other signs of degradation Procedure Support the specimens so that they will be held in a position 0 to 30 from the vertical and in such a manner as to prevent contact between the panels during the test Place the specimens in a humidity cabinet operated in accordance with ASTM D2247 or ASTM D4585 at 38 C (100 F) ± 2 C ( x F) and 100%condensing humidity (greater than 95 % relative humidity RH) for a period of 24 ± ½ hours. Then transfer them to the cold box at -23 C ± 1.52 C (-10 F ± 3 F) allowing a maximum of 30 seconds for the transfer. Leave the specimens in the cold box for a period of 20 ± 1/2 hours Remove the specimens and allow them to remain at room temperature for a period of 4 ± ½ hours., during which they shall be time rated., Tthis constitutes one cycle. Run the test for 15 cycles. During any interruption of the normal cycling, as on weekends, always leave the specimens in the cold box Performance There shall be no loss of adhesion of the film to the fiber reinforced thermoset profiles when tested in accordance with Section There shall be no cracking, loss of adhesionblistering, change of color or other detrimental effects, including visual differences to the coating Oven Aging Principle This test determines the ability of a finish to resist degradation due to high temperatures and high humidity for an extended period of time. Specimens are placed in an oven controlled at 60 o C and then placed in an environment of condensing humidity. Then they are evaluated for pencil hardness and loss of adhesion. AAMA 623-XX, Draft #17, Dated 11/30/17 Page 15

18 Procedure Insert two sets of test specimens in an air circulating oven at 60 o C ± 2 C (140 o F) for seven days. Within one hour of removal from oven Remove place the specimens and place them in 100%condensing humidity (at 38 C and greater than 95% humidityrh)(note: at what temperature?) for 96 hours. Allow the specimens to cool to room temperature. Test Set 1 for film hardness as per Section , and test Set 2 for film adhesion as per Section Performance Film hardness shall be an F minimum. There shall be no loss of adhesion of the film to the fiber reinforced thermoset profiles when tested in accordance with Section 7.4.2There shall be no loss of adhesion Weather Exposure Principle Sunlight, temperature, and moisture in the outdoor environment degrades materials such as coatings, polymeric profiles, and others used in fenestration products. South Florida is considered a global benchmark location for outdoor weathering tests, due to its constant high levels of sunlight, heat, and moisture. In the vast majority of cases, a material that performs well in this environment will perform well in major international markets. An alternative method in this document uses sunlight concentrators located in Arizona, as described in ASTM G90, to accelerate the effects of multiple years of equivalent radiation as is experienced in South Florida. The Nighttime Wetting (NTW) cycle sprays water on samples at cycle frequencies specified by ASTM G90. The device is oriented in such a way that a sample surface angle of 5 degrees is achieved so that wetting may better simulate South Florida conditions for materials sensitive to moisture.nightime Wetting spray (NTW) sprays water on samples at cycle frequencies specified by ASTM G90. The device is angle in such a way that a sample surface angle of 5 degrees is achieved so wetting may better simulate South Florida moisture condition for moisture sensitive materials. 12 These devices include water spray to introduce moisture cycling in an effort to cause moisture uptake such as that is experienced in South Florida. Specimens are sprayed at night time to mimic specimen wetting after sunset in Florida. After weathering exposure, specimens may be evaluated for a number of appearance and physical properties, including color, gloss, cracking, tape adhesion, and others. AAMA 623-XX, Draft #17, Dated 11/30/17 Page 16

19 Exposure Actual South Florida Exposure at an acceptable site. Test sites and duration for on-fence testing are acceptable as follows: Florida Exposure south of Latitude 27 North at a 45 angle facing south for a minimum of one year. Accelerated outdoor weathering using concentrated natural sunlight with night time wetting (NTW) for 290 MJ Total Ultra-Violet Radiation (TUVR) will be an approved alternative to the South Florida testing. The coating shall maintain its film integrity and at a minimum meet the following color retention, chalk resistance, gloss retention and erosion resistance properties. Time elapsed when the coating is off the test fence for evaluation, or other purposes, shall not be counted as part of the exposure minimum. The architect, owner or contractor shall request data relative to the long-term durability of the color(s) selected. Access to exposure panels must be made available to the architect and/or owner upon request Test requirements for concentrated outdoor weathering with natural sunlight are acceptable as follows: Arizona hot desert exposure at approximately Latitude 34º North using concentrated natural sunlight exposure device manufactured, maintained and operated in accordance with ASTM G90 for a minimum of 290 MJ TUVR. To simulate daytime temperatures observed in the summer in South Florida, the daytime black-panel temperature shall be controlled at a set-point of 70ºC, (158ºF) with an allowable operational fluctuation of ± 5ºC (± 9ºF) under clear sky conditions. Refer to ASTM G179 for guidance on the construction, calibration, and maintenance of black- or white- panels. To simulate the South Florida Environment, Cycle 3, consisting of four hourly cycles of spraying with deionized water for three minutes, followed by a dry time of 12 minutes as specified in Table 1 of ASTM G90, shall be used. The spray cycle shall be performed nightly from 7:00 PM to 5:00 AM. The specimens shall be exposed using the non-insulated specimen mounting configuration in accordance with ASTM G90. NOTE 9: This specification recognizes that accelerated outdoor weathering using concentrated natural sunlight testing and the direct South Florida exposure testing have no direct correlation. At their discretion, the manufacturer may test to either or both test methods. NOTE 10: Radiant exposure is measured using the pyranometers, pyrheliometers, and ultraviolet radiometers as described in ASTM G90, or as otherwise agreed to with the customer. By varying the irradiance to a percentage of the maximum value, lower specimen and black-panel temperatures can be achieved Film Integrity Performance AAMA 623-XX, Draft #17, Dated 11/30/17 Page 17

20 There shall be no checking, crazing of the coating film and no loss of adhesion after the tape pull test outlined in Section NOTE 11: Evidence of crazing will be most visible on clear or light color samples Color Retention Procedure After weathering exposure (per Section ), measure the exposed coated surface and the control specimen using a spectrophotometer. The procedure shall be in accordance with ASTM D2244, Section 6.3 and using the reflectance-specular included (RSIN) method. Corresponding values shall be measured on the original retained specimen or the unexposed area of the specimen. A portion of the exposed area specimen shall be washed lightly to remove surface dirt only using clear water and a soft cloth. Heavy scrubbing or any polishing to remove chalk formation or restore the surface is not permitted where color measurements are made Performance There shall be a maximum ofless than 5 E Units (Hunter) of color change using CIE Standard Illuminant D65 with 10 Observer as calculated in accordance with ASTM D2244, after the minimum one year of exposure test per Section Color change shall be measured using specular included readings on the exposed paintedfinish surface which has been cleaned of external deposits with clear water and a soft cloth. Tests started under the previous version of this standard (prior to the publication of this specification revision) using a different illuminant, observer or specular component shall continue to use those original parameters until the completion of the tests. Corresponding values shall be measured on the original retained specimen or the unexposed area of the specimen. A portion of the exposed specimen may be washed lightly to remove surface dirt only. Heavy scrubbing or any polishing to remove chalk formation or restore the surface is not permitted where color measurements are made. NOTE 1112: New colors, whether formulated by a coatings manufacturer or blended by an applicator, according to a coating manufacturer s specifications, may be qualified without the exposure test per Section 7.11, provided they are: 1. produced with the same pigments in the same coating resin system as a color on which acceptable one year test data is available and; 2. within the ± 10 Hu Units in lightness (L) of that color in accordance with ASTM D Chalk Resistance AAMA 623-XX, Draft #17, Dated 11/30/17 Page 18

21 Performance Chalk rating shall be greater than or equal to no more thanthat represented by a No. 8 rating for colors, and No. 6 for whites, based on ASTM D4214, Test Method A (Method ASTM D659) after exposure at the test site per Section TEST REPORT AND RESULTS 8.1 Test report shall include the following information: Date when tests were performed and date of issue of report Identification of organic coating and/or coating system tested, including production date, lot number, cure conditions and pretreatment data, manufacturer thereof and name of company submitting coated specimens used in the test Copy of drawings submitted showing exposed surfaces Test results A statement indicating that organic coating and/or coating system tested passed all tests or failed one or more In case of failure, which test(s) and description of failure(s) Statement that all tests were conducted in accordance with this standard Name and address of the laboratory which conducted tests and issued report. AAMA 623-XX, Draft #17, Dated 11/30/17 Page 19