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	Metric	English	Comments

Density	0.990 g/cc	0.0358 lb/in³	Component A
	0.990 g/cc	0.0358 lb/in³	Component B
	0.990 g/cc	0.0358 lb/in³	cured; ISO 2781
Viscosity	1600 cP @Shear Rate 100 1/s	1600 cP @Shear Rate 100 1/s	Catalyzed A+B; ISO 3219
	1600 cP @Shear Rate 100 1/s	1600 cP @Shear Rate 100 1/s	Component A; ISO 3219
	1600 cP @Shear Rate 100 1/s	1600 cP @Shear Rate 100 1/s	Component B; ISO 3219
	8000 cP @Shear Rate 0.500 1/s	8000 cP @Shear Rate 0.500 1/s	Component B; ISO 3219
	8000 cP @Shear Rate 0.500 1/s	8000 cP @Shear Rate 0.500 1/s	Component A; ISO 3219
	8000 cP @Shear Rate 0.500 1/s	8000 cP @Shear Rate 0.500 1/s	Catalyzed A+B; ISO 3219

Mechanical Properties	Metric	English	Comments
Penetration	60 @Load 0.00938 kg	60 @Load 0.0207 lb	[mm/10], quarter cone; DIN ISO 2137

Processing Properties	Metric	English	Comments
Cure Time	2.00 min @Treatment Temp. 130 °C	0.0333 hour @Treatment Temp. 266 °F
	5.00 min @Treatment Temp. 100 °C	0.0833 hour @Treatment Temp. 212 °F
	30.0 min @Treatment Temp. 150 °C	0.500 hour @Treatment Temp. 302 °F	circulating air oven
Pot Life	70.0 min	70.0 min	catalyzed A+B

Descriptive Properties
Appearance	translucent		Component A
	translucent		Component B
	translucent		cured

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

PWACK9413 / 204942

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