Low viscosity and high thermal conductivity organosilicon gel and preparation method thereof
A technology with high thermal conductivity and low viscosity, applied in chemical instruments and methods, heat exchange materials, etc., can solve the problems of increased cost of thermally conductive gel materials, inability to realize automatic dispensing, difficulty in filling tiny gaps, etc., and achieve aging stability Good, low oil absorption value, the effect of reducing the amount of addition
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[0024] Example 1
[0025] A low-viscosity and high-thermal-conductivity silicone gel. The low-viscosity and high-thermal-conductivity silicone gel is composed of component A and component B, wherein component A includes the following components by mass: 100 parts of vinyl silicone oil, 5 parts of polyvinyl silicone oil, 5 parts of alkyl modified silicone oil, 5 parts of active diluent, 500 parts of high thermal conductivity compound inorganic filler, 1 part of catalyst and 2 parts of pigment, component B includes the following components by mass: 100 parts vinyl silicone oil, 5 parts polyvinyl silicone oil, 5 parts alkyl modified silicone oil, 5 parts active diluent, 500 parts high thermal conductivity compound inorganic filler, 1 part hydrogen-containing silicone oil, 0.5 part inhibitor, 0.5 part increase Adhesive. The vinyl silicone oil is vinyl terminated polydimethylsiloxane, the vinyl mass content is between 0.2%, and the viscosity is 30 mPa·s. The polyvinyl silicone oil i...
Example Embodiment
[0030] Example 2
[0031] A low-viscosity and high-thermal-conductivity silicone gel. The low-viscosity and high-thermal-conductivity silicone gel is composed of component A and component B, wherein component A includes the following components by mass: 100 parts of vinyl silicone oil, 20 parts of polyvinyl silicone oil, 20 parts of alkyl-modified silicone oil, 25 parts of active diluent, 2500 parts of high thermal conductivity compound inorganic filler, 10 parts of catalyst and 10 parts of pigment, component B includes the following components by mass: 100 parts vinyl silicone oil, 20 parts polyvinyl silicone oil, 20 parts alkyl modified silicone oil, 25 parts active diluent, 2500 parts high thermal conductivity compound inorganic filler, 20 parts hydrogen-containing silicone oil, 10 parts inhibitor, 10 parts increase Adhesive. The vinyl silicone oil is vinyl-terminated polydimethylsiloxane, polydimethyl-methylvinylsiloxane and polymethylphenyl-methylvinylsiloxane, and the viny...
Example Embodiment
[0036] Example 3
[0037] A low-viscosity and high-thermal-conductivity silicone gel. The low-viscosity and high-thermal-conductivity silicone gel is composed of component A and component B, wherein component A includes: 70g of vinyl-terminated polyethylene with a viscosity of 50 mPa·s Methylsiloxane, 30g of polydimethyl-methylvinylsiloxane with a viscosity of 250mPa·s vinyl-terminated, 5g of polyvinyl silicone oil with a viscosity of 500mPa·s, and the polyvinyl End and side chains contain vinyl polysiloxane, 20g alkyl-modified silicone oil, the alkyl-modified silicone oil is long-carbon chain alkyl grafted polydimethylsiloxane, 20g reactive diluent, the active The diluent is single-ended vinyl polysiloxane, 2300g of high thermal conductivity compound inorganic filler treated with long chain alkyl silane, oil absorption value is 4%, which contains 1900g spherical alumina (with a particle size of 100μm accounting for 5%, 70μm accounts for 10%, 30μm accounts for 80%, 1μm accounts ...
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