INFUSE Olefin Block Copolymers (OBCs) versus f-pvc

Transcription

1 INFUSE Olefin Block Copolymers (OBCs) versus f-pvc Performance Differences, Benefits, and Potential Value Propositions Dow.com 1

2 Materials Tested Material Compound 65 Shore A Compound 45 Shore A 77 Shore A f-pvc 65 Shore A Description /HDPE/oil/CaCO 3 1/45/125/1 phr /NORDEL IP 477/HDPE/oil/CaCO 3 5/5/25/16/1 phr Neat resin Plasticized PVC Oil-extended thermoplastic elastomers (TPEs) based on INFUSE 91 OBC are compared with a flexible PVC (f-pvc) of similar hardness Comparisons are also made using, which is used as a general proxy for any simple blends of OBCs with other polyolefin thermoplastics (e.g., PP, HDPE, LDPE) Properties shown are typical, not to be construed as specifications. Users should confirm results by their own tests. 2

3 Potential Benefits of OBC Elastomers Property Durability Animal fat resistance Durability Animal blood resistance Durability UV resistance Stain resistance Anti-mold/Anti-microbial Injection molding cycle time Volatile Organic Compounds Abrasion resistance Wet coefficient of friction Oil-extended OBC Compounds versus f-pvc OBC/PP or PE Simple Blends versus f-pvc Shore A 4-8 Shore A 75+ Potential Applications Meat packing boots, conveyor belts, hunting boots Meat packing boots, conveyor belts, hunting boots Outdoor/marine furniture Food contact articles Appliance gaskets, marine furniture Overmolded goods, toys Manufacturing Boots Boots, grips, mats Advantaged performance of OBC materials Similar performance NOTE: Potential properties list is not exhaustive, other benefits and differences may exist Data per tests conducted by Dow. Test protocols and additional information available upon request. Properties shown are typical, not to be construed as specifications. Users should confirm results by their own tests. 3

4 Durability Animal Fat Resistance Tensile Stress (psi) 1,8 1,5 1, Compound 65 Sh A Control Lard 3 months Lard 12 months , 1,2 Tensile Strain (%) Tensile Stress (psi) 1,8 1,5 1, f-pvc Control Lard 3 months Lard 12 months , 1,2 Tensile Strain (%) Tensile Stress (psi) 1,8 1,5 1, Control Lard 3 months Lard 12 months , 1,2 Tensile Strain (%) Tensile properties of compounds after incubating in pork fat (lard) at 37 C for up to 1 year Compound Stable Neat Stable f-pvc Significant embrittlement Data per tests conducted by Dow. Test protocols and additional information available upon request. Properties shown are typical, not to be construed as specifications. Users should confirm results by their own tests. 4

5 Durability Animal Blood Resistance 1,4 1,2 Compound 65 Sh A 1,4 1,2 f-pvc Tensile Stress (psi) 1, Control Blood 12 months Tensile Stress (psi) 1, Control Blood 12 months , 1,2 Tensile Strain (%) , 1,2 Tensile Strain (%) Tensile Stress (psi) 1,4 1,2 1, Control Blood 12 months , 1,2 Tensile Strain (%) Tensile properties of compounds after incubating in bovine blood at 4 C for up to 1 year No significant changes in any of the materials Data per tests conducted by Dow. Test protocols and additional information available upon request. Properties shown are typical, not to be construed as specifications. Users should confirm results by their own tests. 5

6 Durability UV Resistance Before UV Exposure Compound 65 Sh A f-pvc 65 Sh A After 5 hours UV Exposure (15 mw/cm 2 ) Compound 65 Sh A f-pvc 65 Sh A Appearance after UV aging: Neat and Slight yellowing (can be reduced with addition of UV stabilizers (2) ) f-pvc Severe yellowing/browning and cracking Data per tests conducted by Dow. Test protocols and additional information available upon request. Properties shown are typical, not to be construed as specifications. Users should confirm results by their own tests. (2) The addition of an ultraviolet light (UV) stabilizer to a resin does not completely eliminate the effects of UV exposure; it is only intended to slow down the rate at which these effects occur. Actual results may vary depending on application and other factors such as resin color, transparency and additives. Therefore, actual end-use testing is recommended. 6

7 Stain Resistance a* Ketchup Mustard Blueberry Color change after 3 days of exposure to common food staining comestibles: Neat OBC has the least color change -4 INFUSE 91 OBC Compound 45 Sh A INFUSE 91 OBC Compound 65 Sh A f-pvc INFUSE 91 OBC f-pvc has the most color change 35 b* Ketchup Mustard Blueberry 5 - -a +b -5 INFUSE 91 OBC Compound 45 Sh A INFUSE 91 OBC Compound 65 Sh A f-pvc INFUSE 91 OBC -b +a Data per tests conducted by Dow. Test protocols and additional information available upon request. Properties shown are typical, not to be construed as specifications. Users should confirm results by their own tests. 7

8 Anti-Microbial Performance 65 Sh A 45 Sh A f-pvc OBC SAMPLE PINK STAIN TEST ASTM G-21 FUNGAL GROWTH Compound 65 Sh A Trace of Stain Traces of Growth Compound 45 Sh A Trace of Stain High Growth f-pvc Light Stain High Growth No Stain No Growth Neat significantly better than oil-extended compounds or f-pvc No biocide needed Some growth on oil-extended OBC compounds Biocide recommended (i.e., VINYZENE Biocide) f-pvc has poor microbial resistance Biocide required Data per tests conducted by Dow. Test protocols and additional information available upon request. Properties shown are typical, not to be construed as specifications. Users should confirm results by their own tests. 8

9 Injection Molding Cycle Time 4 35 Cycle Time (s) OBC 45 Sh A 65 Sh A f-pvc Injection molding cycle time for 4 x 6 x.125 inch part: Comparable cycle times between compounds, and f-pvc Slightly higher cycle time for neat due to low MI Data per tests conducted by Dow. Test protocols and additional information available upon request. Properties shown are typical, not to be construed as specifications. Users should confirm results by their own tests. 9

10 Volatile Organic Compounds 1 Normalized Volatiles (18 C, 1 min.) f-pvc 45 Sh A 65 Sh A VOC reduction for improved air quality in manufacturing environments: INFUSE OBC blends without oil have very low VOCs (data not shown here) Some volatiles for oil-extended compounds due to mineral oil Significantly higher volatiles for f-pvc Data per tests conducted by Dow. Test protocols and additional information available upon request. Properties shown are typical, not to be construed as specifications. Users should confirm results by their own tests. 1

11 Abrasion Resistance DIN Abrasion 6 DIN Abrasion Relative Volume Loss (mm 3 ) Sh A 65 Sh A f-pvc OBC Improved durability with better abrasion resistance: Neat offers the best abrasion resistance compounds have better DIN abrasion resistance than f-pvc Data per tests conducted by Dow. Test protocols and additional information available upon request. Properties shown are typical, not to be construed as specifications. Users should confirm results by their own tests. 11

12 Coefficient of Friction COF on Stainless Steel Dry Kinetic Wet Kinetic. 45 Sh A 65 Sh A f-pvc OBC COF as measured on mirror-finish plaques on stainless steel: compounds have higher wet and dry COF than f-pvc COF on other surfaces not measured at present Data per tests conducted by Dow. Test protocols and additional information available upon request. Properties shown are typical, not to be construed as specifications. Users should confirm results by their own tests. 12

13 Summary Simple blends of INFUSE OBCs with other thermoplastic polyolefins (i.e., PP, HDPE, LDPE) provide materials over a range of hardness and flexibility and have several benefits over f-pvc TPEs based on have several potential benefits versus f-pvc, including improved durability to UV exposure and fatty materials, better flexibility over a range of temperatures, stain resistance, and lower VOCs for a cleaner manufacturing environment 13

14 General Reference Properties Property / Material Compound - 65 Sh A Compound - 45 Sh A f-pvc Hardness (Shore A, 1 s) Density (g/cm 3 ) Compression Set, 22 hrs, 23 C Compression Set, 22 hrs, 4 C Compression Set, 22 hrs, 7 C Tensile Modulus, 1% secant (psi) Tensile Modulus, 1% secant (psi) Tensile Strength (psi) 2, ,32 Elongation at Break (%) 9 1,138 1,97 31 Data per tests conducted by Dow. Test protocols and additional information available upon request. Properties shown are typical, not to be construed as specifications. Users should confirm results by their own tests. 14

15 General Properties DMS Rheology Complex Viscosity (Pa-s) 1,, 1, 1, 1, Oscillatory Shear at 19 C f-pvc Compound 65 Sh A Compound 45 Sh A Frequency (rad/s) Data per tests conducted by Dow. Test protocols and additional information available upon request. Properties shown are typical, not to be construed as specifications. Users should confirm results by their own tests. 15

16 General Properties Tensile Properties f-pvc Compound 65 Sh A Compound 45 Sh A Tensile Stress (MPa) , 1,2 Tensile Strain (%) Data per tests conducted by Dow. Test protocols and additional information available upon request. Properties shown are typical, not to be construed as specifications. Users should confirm results by their own tests. 16

17 Thank You

18 For more information on products, innovations, expertise, and other services available to you from Dow Elastomers, contact us as indicated below. North America Europe/Middle East dow.com U.S. & Canada dowelastomers.com Italy Mexico South Africa Latin America Argentina Asia Pacific Brazil Colombia Mexico NOTICE: Any photographs of end-use applications in this document represent potential end-use applications but do not necessarily represent current commercial applications, nor do they represent an endorsement by Dow of the actual products. Further, these photographs are for illustration purposes only and do not reflect either an endorsement or sponsorship of any other manufacturer for a specific potential end-use product or application, or for Dow, or for specific products manufactured by Dow. NOTICE: No freedom from infringement of any patent owned by Dow or others is to be inferred. Because use conditions and applicable laws may differ from one location to another and may change with time, the Customer is responsible for determining whether products and the information in this document are appropriate for the Customer s use and for ensuring that the Customer s workplace and disposal practices are in compliance with applicable laws and other governmental enactments. Dow assumes no obligation or liability for the information in this document. NO WARRANTIES ARE GIVEN; ALL IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE ARE EXPRESSLY EXCLUDED. NOTICE: If products are described as experimental or developmental : product specifications may not be fully determined; (2) analysis of hazards and caution in handling and use are required; (3) there is greater potential for Dow to change specifications and/or discontinue production; and (4) although Dow may from time to time provide samples of such products, Dow is not obligated to supply or otherwise commercialize such products for any use or application whatsoever. NOTICE REGARDING MEDICAL APPLICATION RESTRICTIONS: Dow will not knowingly sell or sample any product or service ( Product ) into any commercial or developmental application that is intended for: a. long-term or permanent contact with internal bodily fluids or tissues. Long-term is contact which exceeds 72 continuous hours; b. use in cardiac prosthetic devices regardless of the length of time involved ( cardiac prosthetic devices include, but are not limited to, pacemaker leads and devices, artificial hearts, heart valves, intra-aortic balloons and control systems, and ventricular bypass-assisted devices); c. use as a critical component in medical devices that support or sustain human life; or d. use specifically by pregnant women or in applications designed specifically to promote or interfere with human reproduction. Dow requests that customers considering use of Dow products in medical applications notify Dow so that appropriate assessments may be conducted. Dow does not endorse or claim suitability of its products for specific medical applications. It is the responsibility of the medical device or pharmaceutical manufacturer to determine that the Dow product is safe, lawful, and technically suitable for the intended use. DOW MAKES NO WARRANTIES, EXPRESS OR IMPLIED, CONCERNING THE SUITABILITY OF ANY DOW PRODUCT FOR USE IN MEDICAL APPLICATIONS. This document is intended for global use. Published July, The Dow Chemical Company Trademark of The Dow Chemical Company ( Dow ) or an affiliated company of Dow Responsible Care is a service mark of the American Chemistry Council. Dow is a partner in the American Chemistry Council Responsible Care initiative. Form No SMG 18