Chemours Viton® AL-300 with 2.5 phr Curative, 3 phr Ca(OH) 2 , and 6 phr High Activity MgO

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Chemours Viton® AL-300 with 2.5 phr Curative, 3 phr Ca(OH)₂, and 6 phr High Activity MgO
Categories:	Polymer; Thermoset; Fluoropolymer, TS; Thermoset Fluoroelastomer; Rubber or Thermoset Elastomer (TSE)
Material Notes:	Viton® AL-300 is an “AL-family” gum polymer that demonstrates improved processing when compared to its precursor Viton® B-70N. This gum provides: Lower viscosity Improved mold flow Better mold release Less mold fouling Improved compression set resistance Good low temperature characteristics Applications: Fuel systems, such as fuel injectors O-rings Injection and transfer molding of O-rings, gaskets, and other sealing devices Extruded cords, profiles and tubing, or calendered sheets, when a blend of gum polymers are used Solution coatings of fabrics and other substrates Information provided by manufacturer. Chemours was formed from former DuPont performance chemicals businesses, including the Viton product line, in 2015.
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Mechanical Properties	Original Value	Comments

Hardness, Shore A	70	Cured 10 min at 177°C and Post Cured 24 hr at 232°C; ASTM D2240-91
Tensile Strength, Ultimate	13.0 MPa	Cured 10 min at 177°C and Post Cured 24 hr at 232°C; ASTM D412-92
Elongation at Break	235 %	Cured 10 min at 177°C and Post Cured 24 hr at 232°C; ASTM D412-92
100% Modulus	0.00520 GPa @Strain 100 %	Cured 10 min at 177°C and Post Cured 24 hr at 232°C; ASTM D412-92
Tear Strength	23.5 kN/m	Die C, Cured 10 min at 177°C and Post Cured 24 hr at 232°C
Compression Set	16 % @Temperature 200 °C	Method B, O-rings 70 hr; ASTM D1414-94

Thermal Properties	Original Value	Comments
Brittleness Temperature	-19.0 °C	Temperature Retraction on Post Cured Specimens, TR-10; ASTM D1329-88
Glass Transition Temp, Tg	-19.5 °C	DSC at 20°C/min on Post Cured Specimens

Descriptive Properties
Formulation as Tested	2.5	Viton® Curative No. 50
	3	Calcium Hydroxide
	30	Carbon Black (N-990)
	6	High Activity MgO
	97	Viton® AL-300

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