Viton® VTR-9217

About
VTR-9217 is a developmental precompound based on a recently developed 69% fluorine ‘B’ type fluoroelastomer. This precompound incorporates a bishpenol cure system that can be optionally compounded with peroxide and coagent for ‘dual curing.’ Superior thin extrusions for fuel and filler neck hose can be achieved. VTR-9217 has a unique combination of processing and cure characteristics including: high quality, smooth extrudate surface and appearance at thickness below .040″ or 1.0 mm excellent ‘green’ strength that helps maintain extrudate shape as well as enables draw down to a thickness of .008″ or 0.2 mm. lower viscosity, lower hardness, and better compression set than VTR-9209, the first generation precompound based on the same gum polymer good fuel permeation resistance for a ‘B’ type FKM compounds show good adhesion and physical properties Automotive and small engine applications utilizing low permeation fuel and filler neck hose and tubing are expected to find this product most attractive as an affordable material. This product is superior in extrusion processability compared to Viton® B202 and B600 blends and VTR-7419 hose precompound. Carnauba wax or VPA2 at a 1 to 1.5 phr level are the most common process aids used with VTR-9217 to create a smooth finish and good metal release. Combinations of these process aids with Struktol® WS280 can enhance release to some compounds.&&

About

VTR-9217 is a developmental precompound based on a recently developed 69% fluorine ‘B’ type fluoroelastomer. This precompound incorporates a bishpenol cure system that can be optionally compounded with peroxide and coagent for ‘dual curing.’ Superior thin extrusions for fuel and filler neck hose can be achieved. VTR-9217 has a unique combination of processing and cure characteristics including: high quality, smooth extrudate surface and appearance at thickness below .040″ or 1.0 mm excellent ‘green’ strength that helps maintain extrudate shape as well as enables draw down to a thickness of .008″ or 0.2 mm. lower viscosity, lower hardness, and better compression set than VTR-9209, the first generation precompound based on the same gum polymer good fuel permeation resistance for a ‘B’ type FKM compounds show good adhesion and physical properties Automotive and small engine applications utilizing low permeation fuel and filler neck hose and tubing are expected to find this product most attractive as an affordable material. This product is superior in extrusion processability compared to Viton® B202 and B600 blends and VTR-7419 hose precompound. Carnauba wax or VPA2 at a 1 to 1.5 phr level are the most common process aids used with VTR-9217 to create a smooth finish and good metal release. Combinations of these process aids with Struktol® WS280 can enhance release to some compounds.&&

Product Description
Supplier	Chemours
Generic	氟橡胶
Material Status	Commercial: Active
Features	Excellent Processability,Good surface appearance,Low Viscosity,Good bond,Low Hardness,Fuel resistance
Availabilitys	North America,Europe
Process Methods	Extrusion

Technical Data
PHYSICAL	Nominal value	Unit	Test method
Density	1.82	g/cm³	ASTM D792
Mooney viscosity
ML 1+10，121℃	19	MU	ASTM D1646

MECHANICAL	Nominal value	Unit	Test method
Shore hardness
Shore A, 23 ℃	66		ASTM D2240

elastic body	Nominal value	Unit	Test method
tensile strength
Yield, 23 ℃	7.90	MPa	ASTM D412
100% strain, 23 ℃	3.20	MPa	ASTM D412
10% strain, 23 ℃	0.800	MPa	ASTM D412
Tensile strain
Fracture, 23 ℃	300	%	ASTM D412
Compression deformation			ASTM D395B
70℃，70 hr	24	%	ASTM D395B
150℃，70 hr	69	%	ASTM D395B

Aging performance	Nominal value	Unit	Test method
Volume change			ASTM D471
23 ℃, 168 hr, C-grade standard fuel	3.0	%	ASTM D471
23℃，168 hr，in M15（Fuel C/Methanol 85/15）	13	%	ASTM D471

Notes
1. Typical properties: these are not to be construed as specifications.
2. 508 mm/min
3. 20 in/min
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