HB Fuller 1581 Silicone system

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HB Fuller 1581 Silicone system
Categories:	Polymer; Thermoset; Silicone
Material Notes:	1581 is a one-component alcohol cure RTV silicone sealant. A non-sag material with excellent heat resistance for use in industrial and electronics applications. 1581 has very good adhesion to a wide range of unprimed substrates. High performance with fast and excellent adhesion to glass, aluminum alloy etc. It can be used for a variety of electronics bonding, encapsulation and sealing applications. This material is certified by UL to pass HB flame rating testing. This material performs at temperatures ranging from -55°C to 210°C. Features and Benefits: Excellent heat resistance properties Super resistance to ultra violet(UV) and weather Excellent performance in insulation, thermal cycling, damp-heat, damp-freezing Wide operating temperature range Easy to use for reworkable applications Alcohol cure low/no odor RoHS compliant Halogen free Typical Applications: Electrical insulation Protects leads from mechanical shock Electronics encapsulation Sealing the solar cell side frames Sealing/adhesive solar cell junction boxes Sealing solar energy lamps Sealing and waterproofing for transformer Information provided by H.B. Fuller Company
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Physical Properties	Original Value	Comments

Specific Gravity	1.37 g/cc
Storage Temperature	8.00 - 25.0 °F

Mechanical Properties	Original Value	Comments
Hardness, Shore A	37	ISO 7619
Tensile Strength	2.10 MPa	ISO 37
	1.30 MPa @Temperature <=85.0 °C, Time 3.60e+6 sec	Damp Heat Aging Testing; 85% RH; ISO 37
Elongation at Break	380 %	ISO 37
	300 % @Temperature <=85.0 °C, Time 3.60e+6 sec	Damp Heat Aging Testing; 85% RH; ISO 37
Shear Strength	1.20 MPa	Lap Joint, Aluminum; ISO 4587

Electrical Properties	Original Value	Comments
Volume Resistivity	3.00e+15 ohm-cm	IEC 60093
Dielectric Strength	20.0 kV/mm	IEC 60243-1

Thermal Properties	Original Value	Comments
Maximum Service Temperature, Air	210 °C
Minimum Service Temperature, Air	-54.0 °C

Processing Properties	Original Value	Comments
Cure Time	15.0 min	Tack Free
	24.0 hour @Thickness >=2.00 mm	Full-cure

Descriptive Properties
Color	White
Consistency	Thixotropic Paste

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PHBFULL098 / 316889

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