Wacker Semicosil® 989/1K Silicone Adhesive

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Wacker Semicosil® 989/1K Silicone Adhesive
Categories:	Polymer; Thermoset; Silicone
Material Notes:	SEMICOSIL® 989/1K is a non-slump, thermally curable, addition curing one-part silicone rubber. Special features: one-part, ready-to-use thixotropic transparent medium hardness high flexibility (low-stress-adhesive) rapid heat curing primerless adhesion to many substrates Application: general purpose adhesive for the electronics industry FIPG and CIPG applications Information provided by Wacker Chemie AG.
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Physical Properties	Metric	English	Comments

Density	1.10 g/cc	0.0397 lb/in³	cured; ISO 2781
	1.10 g/cc	0.0397 lb/in³	uncured; DIN 53479
Viscosity	30000 cP @Shear Rate 25.0 1/s	30000 cP @Shear Rate 25.0 1/s	cured; ISO 3219
	300000 cP @Shear Rate 0.500 1/s	300000 cP @Shear Rate 0.500 1/s	uncured; ISO 3219

Mechanical Properties	Metric	English	Comments
Hardness, Shore A	55	55	ISO 868
Tensile Strength at Break	5.00 MPa	725 psi	ISO 37
Elongation at Break	200 %	200 %	ISO 37

Optical Properties	Metric	English	Comments
Transmission, Visible	90 %	90 %	cured. "Transparent" but manufacturer does not quantify.
	90 %	90 %	uncured. "Transparent" but manufacturer does not quantify.

Processing Properties	Metric	English	Comments
Cure Time	60.0 min @Treatment Temp. 130 °C	1.00 hour @Treatment Temp. 266 °F	in a circuatling air oven
	360 min @Treatment Temp. 100 °C	6.00 hour @Treatment Temp. 212 °F

Descriptive Properties
Color	transparent		cured
	transparent		uncured

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.

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