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DuPont Elastomers VTR 8550 (GFLT-S) Peroxide Cured Fluoroelastomer (FKM) Formulation

 

Subcategory: Fluoropolymer, TS; Elastomer, TS; Thermoset

Close Analogs: This former DuPont Dow Elastomers product line is now produced by DuPont Performance Elastomers.

Material Notes:
Formulation
VTR-8550100
Zinc Oxide3
N990 Carbon Black30
Diak™ 7 (TAIC)3
Luperox® 101-XL 453

Description: VTR-8550 is a new, developmental 67% fluorine peroxide cured polymer similar to Viton® GFLT with significantly improved processing and curing characteristics. VTR-8550 utilizes a revolutionary new Advanced Polymer Architecture technology designed to deliver a polymer which:

  • Cures exceptionally fast to a high state of cure
  • Shows improved mold release/mold fouling properties compared to GFLT or GFLT-300
  • Shows improved mold flow, less shear sensitivity, and lower extruder die swell in a ~60 Mooney FKM
  • Shows excellent physical properties with high elongation in either the original or aging tests
  • Shows similar to improved heat, fluids, and low temperature resistance compared to GFLT
  • Shows excellent compression set resistance with little (2 hr at 232°C) or no postcure

It is recommended to use at least a 70% load factor in an internal mixer. The recommended process aid for VTR-8550 is 0.5 phr of Armeen® 18D. A two part process aid system of Armeen® 18D with Strucktol WS 280 at 0.8 phr each is optimal if that level of process aid can be tolerated in mold shrinkage. The use of Diak™ #8 is NOT recommended as it causes poor mold release and high compression set.

Information provided by manufacturer.

Available Properties
  • Mooney Viscosity
  • Hardness, Shore A
  • Tensile Strength, Ultimate
  • Elongation at Break
  • Modulus of Elasticity
  • 100% Modulus
  • Compression Set, Elevated Temperature
  • Brittleness Temperature
  • Glass Temperature
  
Property Data

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