CHT AS1821 RTV, silicone adhesive sealant

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CHT AS1821 RTV, silicone adhesive sealant
Categories:	Polymer; Thermoset; Silicone; Silicone, RTV, Adhesive/Sealant Grade
Material Notes:	Description: This is a non-corrosive, neutral cure, 1-part, RTV (Room Temperature Vulcanizing) silicone adhesive sealant. It is one in a range of Acetone cure products which are solvent free. It exhibits excellent primerless adhesion to many substrates and cures rapidly at room temperature when in contact with atmospheric moisture to form a tough rubber. This product will not corrode copper or its alloys and is suitable for use with electronic components. Key Features Fast room temperature cure Non corrosive Low linear shrinkage Self leveling Application: Applications include shallow potting of electrical connectors in automotive Cured Product: 7 days at 23+/-2°C and 50+/-5% humidity Information provided by CHT Group
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Physical Properties	Original Value	Comments

Density	1.07 g/cc	BS ISO 2781
Brookfield Viscosity	20000 cP	Mixed
Storage Temperature	<= 4.00 °C

Mechanical Properties	Original Value	Comments
Hardness, Shore A	27	ASTM D2240-95
Tensile Strength	123 psi	ISO 37
Elongation at Break	200 %	ISO 37
Tensile Modulus	58.0 psi	Young's
100% Modulus	73.0 psi
Shear Strength	0.343 MPa	Lap Shear Stainless Steel; ASTM D1002
	0.579 MPa	Lap Shear Aluminum; ASTM D1002
	0.637 MPa	Lap Shear Copper; ASTM D1002
Tear Strength	17.0 pli	BS ISO 34-1

Electrical Properties	Original Value	Comments
Volume Resistivity	5.40e+15 ohm-cm	ASTM D-257
Dielectric Constant	2.88	ASTM D-150
Dielectric Strength	>= 508 V/mil	ASTM D-149
Dissipation Factor	0.0050	ASTM D-150

Thermal Properties	Original Value	Comments
CTE, linear	302 µm/m-°C
Thermal Conductivity	0.200 W/m-K
Maximum Service Temperature, Air	220 °C
Minimum Service Temperature, Air	-50.0 °C

Processing Properties	Original Value	Comments
Cure Time	10.0 min	Tack Free Time / Skin Formation
	24.0 hour @Temperature 23.0 °C	3mm Depth
Shelf Life	12.0 Month

Descriptive Properties
Appearance	Viscous liquid
Color	Black
Cure type	Acetone
Rheology	Flowable
Self Bonding	Yes
Volume Coefficient of Thermal Expansion	906 ppm/°C

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PCHTSIL033 / 314516

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