CHT Group QSil 223 Transparent, Liquid Silicone Rubber

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CHT Group QSil 223 Transparent, Liquid Silicone Rubber
Categories:	Polymer; Thermoset; Silicone; Silicone Rubber; Liquid Silicone Rubber (LSR)
Material Notes:	Product Description: QSil 223 is a two-part, clear, liquid silicone which will cure at room temperature or at elevated temperatures. It has a low viscosity which allows for ease of flow around complex parts, providing electrical insulation and shock resistance. The chemical composition provides hydrolytic and reversion resistance. Key Features: Convenient 1:1 mixing ratio for use in automatic dispensing equipment or hand mixing Contains no solvents Non-yellowing catalyst system Formerly Amber Chemical Co (ACC Silicones), aquired by CHT in 2017
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Physical Properties	Metric	English	Comments

Specific Gravity	1.03 g/cc	1.03 g/cc	Uncatalyzed, QSil 223A
	1.03 g/cc	1.03 g/cc	Uncatalyzed, QSil 223B
Viscosity	2400 cP	2400 cP	Uncatalyzed, QSil 223B
	3200 cP	3200 cP	Uncatalyzed, QSil 223A
Linear Mold Shrinkage	<= 0.0010 cm/cm	<= 0.0010 in/in	Cured

Mechanical Properties	Metric	English	Comments
Hardness, Shore A	51	51	Cured 24 hours @ 25°C
	53	53	Cured 1 hour @ 70°C
	65	65	Cured 1 hour @ 150°C

Electrical Properties	Metric	English	Comments
Volume Resistivity	1.70e+15 ohm-cm	1.70e+15 ohm-cm
Dielectric Constant	2.69 @Frequency 1000 Hz	2.69 @Frequency 1000 Hz
Dielectric Strength	19.7 kV/mm	500 kV/in
Dissipation Factor	0.00060 @Frequency 1000 Hz	0.00060 @Frequency 1000 Hz

Thermal Properties	Metric	English	Comments
CTE, linear	275 µm/m-°C	153 µin/in-°F
Specific Heat Capacity	0.700 J/g-°C	0.167 BTU/lb-°F
Thermal Conductivity	0.180 W/m-K	1.25 BTU-in/hr-ft²-°F
Maximum Service Temperature, Air	204 °C	399 °F
Minimum Service Temperature, Air	-55.0 °C	-67.0 °F
Flammability, UL94	HB @Thickness 1.70 mm	HB @Thickness 0.0669 in

Optical Properties	Metric	English	Comments
Refractive Index	1.405	1.405
Transmission, Visible	>= 98 % @Thickness 1.00 mm, Wavelength 400 nm	>= 98 % @Thickness 0.0394 in, Wavelength 400 nm

Processing Properties	Metric	English	Comments
Cure Time	60.0 min @Temperature 70.0 °C	1.00 hour @Temperature 158 °F
	60.0 min @Temperature 150 °C	1.00 hour @Temperature 302 °F
	1440 min @Temperature 25.0 °C	24.0 hour @Temperature 77.0 °F
Gel Time	120 min	120 min	Catalyzed

Descriptive Properties
Color	Clear		Uncatalyzed, QSil 223A
	Clear		Uncatalyzed, QSil 223B
	Clear, colorless		Catalyzed

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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