QUV-B TEST REPORT. for International Yacht Services Ltd SealX, A-Glaze & Duraseal Surface Treatments

Transcription

1 \ QUV-B TEST REPORT for International Yacht Services Ltd SealX, A-Glaze & Duraseal Surface Treatments

2 TABLE OF CONTENTS Background 3 Test Objective 3 Sample Information 4 Test Description 4 Results Photographic Record 5 Summary of Results 13 Conclusion 13 Page 2

3 BACKGROUND Requestor Thomas Mueller International Yacht Services 48 Riverside Drive PO Box 653 Whangarei 0140 New Zealand Ph/Fax +64 (0) Test Venue Dulux Powder & Industrial Coating NZ Ltd Technical & Innovation Laboratory 31B Hillside Road Glenfield Auckland 0627 New Zealand Ph Fax: Test Period 5 th November th November 2014 Date of report 25 th November 2014 Report by Alexander Lauaki Development Chemist Dulux Powder and Industrial Coatings Ltd DDI TEST OBJECTIVE To evaluate wettability of surface on supplied specimens treated with SealX, A-Glaze and Duraseal surface treatments after accelerated weathering by QUV-B exposure. Page 3

4 SAMPLE INFORMATION Test specimens 75mm x 150mm of Fiber glass, Car bonnet (steel with automotive standard finish), Sail film (reinforced HDPE film) and bare aluminium (sheet metal panel) were supplied by International Yacht Services for testing. Test samples had been treated and labeled as follows: D A S NO Duraseal A-Glaze SealX Control (no treatment) TEST DESCRIPTION A. Equipment & Accessories Q-lab: QUV/spray tester with solar eye irradiance control Olympus SZX16 Microscope Pax cam digital camera Pax-it imaging software B. Test Procedure Test samples were placed into QUV/spray tester for 100 hours to SAE J2020 test conditions. Cycle: 4 hours UVB at 60 C, 4 hours condensation at 50 C Bulbs used: UVB 313-EL lamps Irradiance during UV step: 0.63W/m 2 /nm Test samples were monitored periodically for changes in gloss and appearance. Surface wettability assessment ASTM D was conducted at completion of QUV-B exposure. A 0.2mL drop of distilled water was placed onto each test panel and a lateral image was captured using microscope with digital camera. Scale photographs were printed and then advancing contact angle of water drop to specimen surface determined with a protractor. C. Evaluation Criteria Advancing contact angle A > 90 surface is hydrophobic Advancing contact angle A < 45 surface is hydrophilic Page 4

5 TEST RESULTS Fiber Glass Initial verification and test starts After 100 hours QUV-B Page 5

6 Fiber Glass Control (NO) specimen after 24 hours QUV-B Page 6

7 Wettability assessment results Fiber glass panels after 100 hours QUV-B exposure SealX - contact angle 100 (hydrophobic) A-Glaze - contact angle 42 (hydrophilic) Duraseal - contact angle 68 Control - contact angle 52 Page 7

8 Car bonnet (steel with automotive standard finish) Initial verification and test starts 200 hours QUV-B Page 8

9 Wettability assessment results Car bonnet panels after 200 hours QUV-B exposure SealX contact angle 93 (hydrophobic) A-Glaze contact angle 65 Duraseal contact angle 75 Control contact angle 66 Page 9

10 Sail film (reinforced HDPE film) Initial verification and test starts 100 hours QUV-B Page 10

11 Wettability assessment results Sail film panels after 100 hours QUV-B exposure SealX contact angle 102 (hydrophobic) A-Glaze contact angle 73 Duraseal - contact angle 69 Control - contact angle 51 Page 11

12 Aluminium panel (bare metal) Initial verification and test starts 100 hours QUV-B Page 12

13 SUMMARY OF RESULTS Gloss ( GU, 60 incident ) Fiber Glass Car Bonnet Sail Film Aluminium 0 hours hours hours Advancing Contact Angle Fiber Glass Car Bonnet Sail Film Aluminium 100 hours hours After 24 hours QUV-B exposure, surface cracking was noted on fiber glass control (NO) specimen. No cracking was observed on any of the treated fiber glass specimens after 100 hours QUV-B exposure. Porous aluminium oxide formation rendered all four bare aluminium specimens hydrophilic/highly wettable after QUV-B exposure. SealX treated specimens were the only specimens to show advancing contact angle greater than 90 after QUV-B exposure. Order from most hydrophobic to most hydrophilic after QUV-B exposure: SealX > Duraseal > A-Glaze = Control CONCLUSION SealX treated fiber glass, car bonnet and sail film were the only specimens of those tested to meet the criteria for a hydrophobic surface (i.e. advancing contact angle > 90 ) after completion of 100 hours QUV-B exposure. Dulux Powder and Industrial Coatings Ltd PO Box North Shore Mail Centre Auckland 0745 New Zealand Page 13

14 DISCLAIMER: Any advice, recommendation, information, assistance or service provided by Dulux Powder & Industrial Coatings in relation to goods manufactured by it or their use and application is given in good faith and is believed by Dulux Powder & Industrial Coatings to be appropriate and reliable. However, any advice, recommendation, information, assistance or service provided by Dulux Powder & Industrial Coatings provided without liability or responsibility PROVIDED THAT the foregoing shall not exclude, limit, restrict or modify the right entitlements and remedies conferred upon any person or the liabilities imposed upon Dulux Powder & Industrial Coatings by any condition or warranty implied by applicable legislation, regulation or other Government ordinance voiding or prohibiting such exclusion, limitation or modification Page 14