Wacker Semicosil® 911 A/B Silicone Gel

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Wacker Semicosil® 911 A/B Silicone Gel
Categories:	Polymer; Thermoset; Silicone; Silicone Rubber
Material Notes:	SEMICOSIL® 911 A/B is a pourable, addition-curing, two-part silicone rubber that cures to a soft silicone gel. Special features: two-part, 1 : 1 mixing ratio thixotropic rapid heat cure forms a soft gel on vulcanization low content of volatiles low content of uncured polymer almost constant properties between -40 °C and +180 °C low ion content Application: Because of the thixotropic behavior, SEMICOSIL® 911 A/B is specially recommended for local encapsulation of delicate electronic components. Information provided by Wacker Chemie AG.
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Physical Properties	Original Value	Comments

Density	0.990 g/cc	Component A
	0.990 g/cc	Component B
	0.990 g/cc	cured; ISO 2781
Viscosity	1600 cP @Shear Rate 100 1/s	Catalyzed A+B; ISO 3219
	1600 cP @Shear Rate 100 1/s	Component A; ISO 3219
	1600 cP @Shear Rate 100 1/s	Component B; ISO 3219
	8000 cP @Shear Rate 0.500 1/s	Component B; ISO 3219
	8000 cP @Shear Rate 0.500 1/s	Component A; ISO 3219
	8000 cP @Shear Rate 0.500 1/s	Catalyzed A+B; ISO 3219

Mechanical Properties	Original Value	Comments
Penetration	60 @Load 0.00938 kg	[mm/10], quarter cone; DIN ISO 2137

Processing Properties	Original Value	Comments
Cure Time	2.00 min @Treatment Temp. 130 °C
	5.00 min @Treatment Temp. 100 °C
	30.0 min @Treatment Temp. 150 °C	circulating air oven
Pot Life	70.0 min	catalyzed A+B

Descriptive Properties
Appearance	translucent	Component A
	translucent	Component B
	translucent	cured

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PWACK9413 / 204942

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