Viton GAL-200S. Technical Information

Transcription

1 Technical Information Product Description fluoroelastomer, formerly know as VTR-8675, is a low viscosity, 66% fluorine, peroxide-curable fluoroelastomer. is manufactured using the latest technology from DuPont Performance Elastomers, Advanced Polymer Architecture (APA). includes a novel peroxide cure site and has an optimized molecular weight distribution. Features Product Description: Peroxide-curable polymer similar to Viton AL-300. Chemical Composition: Copolymer of hexafluoro- Improved low temperature resistance compared to bisphenol cured 66% fluorine copolymer Improved water, steam, and coolant resistance compared to bisphenol cured, 66% fluorine polymer Cures exceptionally fast to a high state of cure Improved mold release / mold fouling properties compared to previously available technology peroxide cured polymer Good physical properties with high elongation, both original and aged Excellent compression set resistance with either low or no postcure Processing propylene, vinylidene fluoride, tetrafluoro ethylene and a cure site monomer Physical form sheet Appearance A high load factor, 72% or higher, is recommended for internal mixing of. The suggested process aids are 0.75 phr of Struktol HT290 either alone or in combination with 0.5 phr of PAT-777. Combinations of 0.5 phr Armeen 18D with carnauba wax or Struktol WS280 may also be used. Diak 7 (TAIC) is the suggested coagent for compounds and is commonly used at a 3 phr level or lower unless high modulus is needed. When used at higher levels TAIC can bleed out and cause mold fouling and molding flaws. The use of Diak TM 8 is NOT recommended as it causes poor mold release and high compression set. A peroxide level of 1.5 phr is suggested for this fast curing FKM polymer. Odor Mooney Viscosity, white to tan none ML C 25 Specific Gravity 1.79 Storage Stability Excellent Fluorine Content ~ 66% Note: These are typical physical properties and not intended to serve as specifications Safety & Handling Before handling or processing, read and be guided by the suggestions in DuPont Performance Elastomers technical bulletin "Handling Precautions for Viton and Related Chemicals." Contents Table I - Fundamental Properties

2 Table I Fundamental Properties of GBL-200S Compound: 1 A48-01 A C (gum): Compound A48-01 A48-03 Viton GBL-200S Zinc Oxide 3 3 N Diak 7 (TAIC) 3 3 Varox DBPH Total phr lab = Mooney 121 C Minimum, MU Pt. Rise (min) Pt. Rise (min) >30 > C, 3 Degree Arc, 100 Range, 30 Minute Clock M-L (dnm) 7 6 ts-2 (min) t'50 (min) t'90 (min) M-H (dnm) MDR 177 C, 0.5 Degree Arc, 100 Range, 6 Minute Clock M-L (dnm) ts-1 (min) ts-2 (min) t'50 (min) t'90 (min) t'95 (min) M-H (dnm) Spider Mold Flow Test - Sprue 0.8 mm" bar (2,000 psi) inject pressure (cure 177 C) Total shot weight (gms) Weight of spider (gms) Fill factor (%) 67% 65% Physical R.T. - Original (Cure 177 C - no postcure) M-10, MPa M-100, MPa Tensile, MPa (T-B, psi) (1604) (1770) Elongation, % Hardness, A, pts (continued)

3 3 Table I - Fundamental Properties of VTR-8675 (cont.) GBL-200S Compound: 1 A48-01 A48-03 "Hot" tear 150 C - Original (Cured 177 C - No Postcure) Tear Die B (nicked), N/mm Physical R.T. - Original (Cure 177 C C as noted) PC: 2 hrs PC: 2 hrs M-10, MPa M-100, MPa M-300, MPa Tensile, MPa (T-B, psi) (2416) (2582) Elongation, % Hardness, A, pts Low Temperature Testing Tg by Modulated DSC, C TR-10, C Compression Set, Method B, O-Rings C PC: 2 hrs PC: 2 hrs - No Postcure C (as noted) C - No Postcure C (as noted) Physical R.T. - Heat Aged C In Oven (slabs postcured) M-100, MPa (% Change, M100) 7% 16% Tensile, MPa (% Change, T-B) 17% 17% Elongation, % (% Change, E-B) -3% -16% Hardness, A, pts (Pts Change) 2 2 Physical R.T. - Heat Aged C In Oven (slabs postcured) M-100, MPa (% Change, M100) -11% 14% Tensile, MPa (% Change, T-B) -5% -12% Elongation, % (% Change, E-B) 12% -27% Hardness, A, pts (Pts Change) 1 3 (continued)

4 4 Table I - Fundamental Properties of VTR-8675 (cont.) GBL-200S Compound: 1 A48-01 A48-03 Physical R.T. - Aged C In ASTM #105 Oil (5W/30) M-100, MPa (% Change, M100) 14% 16% Tensile, MPa (% Change, T-B) -51% -53% Elongation, % (% Change, E-B) -47% -55% Hardness, A, pts (Pts Change) 3 4 Volume Swell, % Fuel Resistance - Volume swell tested C Fuel C, %VS /15 Fuel C/Methanol, %VS Water, %VS Sp. Gravity Compound reference number: DD-1977A48

5 5 Appendix List of Proprietary Chemicals and Ingredients Sources of compounding ingredients referenced or used in this bulletin are listed below. This is not to imply that comparable ingredients from other sources might not be equally suitable. Material Composition Supplier Armeen 18D 1-Octadecanamine,N-Octadecyl Akzo Nobel Polymer Chemicals LLC Chicago, IL Carnauba wax carnauba wax Frank B. Ross Co. Inc. Jersey City, NJ Diak 7 TAIC triallyl isocyanurate DuPont Performance Elastomers Wilmington, DE PAT-777 Fatty acid derivatives IDE Processes International Sales LLC (E und P Wurtz GmbH) Kew Gardens, NY Struktol HT-290 Blend of fatty acid derivatives Struktol Co. of America Stow, OH Struktol WS-280 silicone-organic compounds Struktol Co. of America Stow, OH Varox DBPH-50 45% active dispersion of 2,5 R.T. Vanderbilt Co. Dimethyl-2-5Di-(t-butyl-peroxy) hexane Norwalk, CT Viton fluoroelastomer Fluorinated synthetic rubber (FKM) DuPont Performance Elastomers Wilmington, DE Test Procedures Property Measured Test Procedure Compression Set ASTM D395, Method B (25% deflection) Compression Set, O-Rings ASTM D395, Method B (25% deflection) Hardness ASTM D1414, durometer A Mooney Scorch ASTM D1646, small 121 C Mooney Viscosity ASTM D1646, ten 121 C ODR (oscillating disk rheometer) ASTM D2084 Property Change After Heat Aging ASTM D573 Stress/Strain Properties ASTM D412, pulled at 8.5 mm/s (20 in/min) 100% Modulus Tensile Strength (T-B) Elongation (E-B) Temperature Retraction (TR-10) ASTM D1329 Volume Change In Fluids ASTM D471 Note: Test temperature is 23 C except where specified otherwise

6 6 For further information please contact one of the offices below, or visit our website at Global Headquarters Wilmington, DE USA Tel Fax South & Central America Headquarters - Brazil Tel Fax European Headquarters - Geneva Tel Fax Asia Pacific Headquarters - Singapore Tel Fax Japan Headquarters Tokyo Tel Fax The information set forth herein is furnished free of charge and is based on technical data that DuPont Performance Elastomers believes to be reliable. It is intended for use by persons having technical skill, at their own discretion and risk. Handling precaution information is given with the understanding that those using it will satisfy themselves that their particular conditions of use present no health or safety hazards. Since conditions of product use and disposal are outside our control, we make no warranties, express or implied, and assume no liability in connection with any use of this information. As with any material, evaluation of any compound under end-use conditions prior to specification is essential. Nothing herein is to be taken as a license to operate or a recommendation to infringe on patents. While the information presented here is accurate at the time of publication, specifications can change. Check for the most up-to-date information. Caution: Do not use in medical applications involving permanent implantation in the human body. For other medical applications, discuss with your DuPont Performance Elastomers customer service representative and read Medical Caution Statement H DuPont is a trademark of DuPont and its affiliates. Armeen is a registered trademark of Akzo Nobel Polymer Chemicals LLC Struktol is a registered trademark of Struktol Co. of America Varox is a registered trademark of R.T. Vanderbilt Co. Viton and Diak are registered trademarks or trademarks of DuPont Performance Elastomers. Copyright 2007 DuPont Performance Elastomers. All Rights Reserved. (02/07) Printed in U.S.A. Reorder no: VTE-A A0207