Wacker Semicosil® 970 TC A/B Conductive Adhesive Sealant

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Wacker Semicosil® 970 TC A/B Conductive Adhesive Sealant
Categories:	Polymer; Thermoset; Silicone; Silicone Elastomer, for Thermal Management
Material Notes:	SEMICOSIL® 970 TC A/B is a pasty, but still flowable addition-curing, two component elastomeric silicone that cures at elevated temperature to an thermally conductive silicone rubber. Special features: two-component thermal conductivity pasty, still flowable almost constant properties between -40 °C and +180 °C primerless adhesion Application: versatile interface material for heat sink applications for the electronics industry thermally conductive adhesive material applicable as thin interface layer between PCB and metal housings of electric control units heat ablation in lighting modules Information provided by Wacker Chemie AG.
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Physical Properties	Metric	English	Comments

Density	2.26 g/cc	0.0816 lb/in³	Component A
	2.26 g/cc	0.0816 lb/in³	Component B
	2.26 g/cc	0.0816 lb/in³	cured; DIN 53479 A/ISO 2781
Viscosity	25000 cP @Shear Rate 10.0 1/s	25000 cP @Shear Rate 10.0 1/s	Component A, plate-paste-rotational viscosimeter
	30000 cP @Shear Rate 10.0 1/s	30000 cP @Shear Rate 10.0 1/s	Catalyzed A+B
	35000 cP @Shear Rate 10.0 1/s	35000 cP @Shear Rate 10.0 1/s	Component B, plate-paste-rotational viscosimeter
	85000 cP @Shear Rate 0.500 1/s	85000 cP @Shear Rate 0.500 1/s	Component A, plate-paste-rotational viscosimeter
	94000 cP @Shear Rate 0.500 1/s	94000 cP @Shear Rate 0.500 1/s	Catalyzed A+B
	120000 cP @Shear Rate 0.500 1/s	120000 cP @Shear Rate 0.500 1/s	Component B, plate-paste-rotational viscosimeter

Mechanical Properties	Metric	English	Comments
Hardness, Shore A	65	65	DIN 53505/ISO 868
Tensile Strength at Break	4.00 MPa	580 psi
Elongation at Break	90 %	90 %
Tear Strength	7.00 kN/m	39.9 pli

Thermal Properties	Metric	English	Comments
Thermal Conductivity	0.800 W/m-K	5.55 BTU-in/hr-ft²-°F

Processing Properties	Metric	English	Comments
Pot Life	960 min	960 min	Catalyzed A+B

Descriptive Properties
Appearance	white-gray		Catalyzed A+B
	white-gray		Component A
	white-gray		Component B

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PWACK9424 / 204953

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