A kind of high temperature resistant cyanate ester conductive adhesive and preparation method thereof
A technology of cyanate ester and conductive adhesive, which is applied in the direction of conductive adhesives, adhesives, polymer adhesive additives, etc., can solve the problems of reduced electrical conductivity and impact on service life, and achieves reduced gas production, excellent high temperature resistance, The effect of low mass loss
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[0055] A preparation method of the above-mentioned high temperature resistant cyanate ester conductive adhesive, the method may further comprise the steps:
[0056] (1) In parts by mass, disperse conductive filler and / or low-potential metal filler into low-boiling point solvent by ultrasonic or stirring method, add high-temperature-resistant chelating agent, continue ultrasonic or stirring, filter and dry to obtain mixed material A; wherein , low-boiling point solvents include one or more of ethanol, acetone, and isopropanol; the time for continuing to sonicate or stir is 6-12h;
[0057] (2) In parts by mass, the corrosion inhibitor and / or curing agent and / or reactive diluent and / or toughening agent and / or adhesion promoter are added to the cyanate resin and mixed uniformly to obtain the mixed material B;
[0058] (3) After mixing the mixed material A and the mixed material B, vacuum mixing and degassing to obtain a high temperature resistant cyanate ester conductive adhesive,...
Embodiment 1
[0060] A preparation method of high temperature resistant cyanate ester conductive adhesive, the method comprises the following steps:
[0061] (1) Weigh 78 parts of silver powder and 1 part of indium powder, ultrasonically disperse them into a sufficient amount of acetone / isopropanol mixed solvent, filter and vacuum dry the powders.
[0062] (2) Weigh 0.15 parts of nonylphenol, 0.05 parts of copper acetylacetonate, 0.1 parts of DTPA dianhydride, 2 parts of tripropylene glycol diacrylate, 0.7 parts of nitrile rubber, 1 part of polyvinyl butyral, and disperse to 5 parts bisphenol A and 12 parts bisphenol E mixed resin.
[0063] (3) Put all the obtained materials into a double planetary ball mill, stir and vacuum defoam at 100-120° C. to obtain a high-temperature-resistant cyanate ester conductive adhesive with a total number of 100 parts.
[0064] According to GJB548B, verify the bonding performance of the high-temperature-resistant cyanate ester conductive adhesive prepared i...
Embodiment 2
[0067] A preparation method of high temperature resistant cyanate ester conductive adhesive, the method comprises the following steps:
[0068] (1) Weigh 79 parts of silver powder and 2 parts of indium powder, ultrasonically disperse them into a sufficient amount of acetone / isopropanol mixed solvent, filter and dry the powder in vacuum.
[0069] (2) Weigh 0.15 parts of nonylphenol, 0.05 parts of cobalt acetylacetonate, 0.1 part of DTPA dianhydride, 1.6 parts of nitrile rubber, and 0.1 part of polyvinyl butyral, and disperse them into 17 parts of bisphenol E resin.
[0070] (3) Put all the obtained materials into a double planetary ball mill, stir and vacuum defoam at 100-120° C. to obtain a high-temperature-resistant cyanate ester conductive adhesive with a total number of 100 parts.
[0071] According to GJB548B, verify the bonding performance of the high-temperature-resistant cyanate ester conductive adhesive prepared in this example, use the conductive adhesive of this exam...
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