A kind of aluminum nitride and aluminum oxide composite heat-conducting and insulating silica gel material and preparation method thereof
A technology of insulating silica gel and aluminum nitride, which is applied in the field of silica gel gaskets and its preparation, can solve problems such as insufficient thermal conductivity, and achieve the effects of improved thermal conductivity, good insulation, and improved thermal conductivity
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0053] Another aspect of the present invention provides a method for preparing an insulating and heat-conducting silica gel material, which sequentially includes the following steps:
[0054] 1) Compounding aluminum nitride particles and alumina particles, adding a surfactant and heating and mixing to obtain a thermally conductive filler;
[0055] 2) In the mixture of polydimethylsiloxane, hydrogen-containing silicone oil, dimethyl silicone oil, and inhibitor, add thermally conductive filler, stir well, add catalyst, stir evenly, and obtain an insulating thermally conductive silicone material.
[0056] Preferably, the method of compounding aluminum nitride particles and alumina particles in step 1) is to mix and stir the aluminum nitride particles and alumina particles evenly, then add a mixture of surfactant and ethanol, and stir until the powder is wetted , continue to stir and heat up to 60-90°C, keep stirring, and heat up to 120-180°C, vacuumize to remove low molecules, an...
Embodiment 1
[0071] Example 1: A compound of aluminum nitride and aluminum oxide with high thermal conductivity, insulation and heat conduction silica gel gasket
[0072] The preparation method is:
[0073] 1) Aluminum nitride and alumina compound selection:
[0074]
[0075] Compound the above-mentioned aluminum nitride and alumina, mix and stir evenly, add a mixture of 24 parts of surfactant and 72 parts of ethanol, stir well until the powder is wetted, continue stirring and raise the temperature to 80°C, keep stirring After 4 hours, the temperature was raised to 150°C, the low molecules were removed in vacuum, and 2400 parts of the processed mixed powder were obtained;
[0076] 2) 100 parts of vinyl-terminated polydimethylsiloxane (100cps: 2000cps = 2:1), 6 parts of hydrogen-containing silicone oil (side hydrogen: terminal hydrogen = 2:1), 10 parts of 100cps dimethyl silicone oil 1. Put 0.1 part of inhibitor (acetylene cyclohexanol) into a kneader or a planetary mixer, add 2400 par...
Embodiment 2
[0079] Example 2: A compound of aluminum nitride and aluminum oxide with high thermal conductivity, insulation and heat conduction silica gel gasket
[0080] Its preparation method is:
[0081] 1) Aluminum nitride and alumina compound selection:
[0082]
[0083] Compound the above-mentioned aluminum nitride and alumina, mix and stir evenly, add a mixture of 26 parts of surfactant and 78 parts of ethanol, stir well until the powder is wetted, continue stirring and raise the temperature to 80°C, keep stirring After 4 hours, the temperature was raised to 150°C, the ethanol was removed in a vacuum, and 2600 parts of the treated mixed powder were obtained;
[0084] 2) 100 parts of vinyl-terminated polydimethylsiloxane (100cps: 2000cps = 2:1), 6 parts of hydrogen-containing silicone oil (side hydrogen: terminal hydrogen = 2:1), 10 parts of 100cps dimethyl silicone oil 1. Put 0.1 part of inhibitor (acetylene cyclohexanol) into a kneader or a planetary mixer, add 2600 parts of t...
PUM
| Property | Measurement | Unit |
|---|---|---|
| particle diameter | aaaaa | aaaaa |
| particle diameter | aaaaa | aaaaa |
| particle diameter | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More