DuPont Mobility and Materials GBL-900

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DuPont Mobility and Materials GBL-900 (discontinued **)
Categories:	Polymer; Thermoset; Fluoropolymer, TS; Thermoset Fluoroelastomer; Rubber or Thermoset Elastomer (TSE)
Material Notes:	VTR-8650 is a 68% fluorine peroxide cured polymer similar to Viton® GBL-900 but with significantly improved processing and curing characteristics. VTR-8650 utilizes Advanced Polymer Architecture technology which includes a new peroxide cure site along with an optimized molecular weight distribution designed to deliver a polymer which: Cures exceptionally fast to a high state of cure Shows improved mold release/mold fouling properties compared to Viton® GBL-900 and 200 Shows improved mold flow, less shear sensitivity, and lower extruder die swell for a ~65 Mooney FKM Shows excellent physical properties with high elongation, both original and aged Shows similar heat, fluids, and low temperature resistance compared to Viton® GBL-900 and 200 Shows improved water resistance/volume swell in water compared to Viton® GBL-900 and 200 Shows excellent compression set resistance with either low or no postcure It is recommended if mixing in an internal mixer to use at least a 70% load factor. The recommended process aid for VTR-8650 is 0.5 phr of Armeen® 18D. Information provided by manufacturer.
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Physical Properties	Original Value	Comments

Mooney Viscosity	86 @Temperature 121 °C	ML-10 (gum)

Mechanical Properties	Original Value	Comments
Hardness, Shore A	73	Cured 7 min at 177°C and Post Cured 16 hr at 232°C
Tensile Strength, Ultimate	20.9 MPa	Cured 7 min at 177°C and Post Cured 16 hr at 232°C
Tensile Strength, Yield	0.000750 GPa	10% Modulus, Cured 7 min at 177°C and Post Cured 16 hr at 232°C
Elongation at Break	174 %	Cured 7 min at 177°C and Post Cured 16 hr at 232°C
100% Modulus	0.00730 GPa @Strain 100 %	Cured 7 min at 177°C and Post Cured 16 hr at 232°C

Thermal Properties	Original Value	Comments
Glass Transition Temp, Tg	-15.8 °C	DSC, modulated, midpoint

Component Elements Properties	Original Value	Comments
Fluorine, F	68 %

Descriptive Properties
Formulation as Tested	100	Viton® GBL-900
	3	Zinc Oxide
	3	Diak™ 7 (TAIC)
	3	Luperox® 101-XL peroxide
	30	N990 Carbon Black

**
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PDVDA57 / 34026

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