Graphene-filled isotropic high-performance heat-conducting adhesive and preparation method
An isotropic, graphene technology, used in adhesives, non-polymer adhesive additives, adhesive types, etc., can solve the problems of low bonding strength, low thermal conductivity of thermally conductive adhesives, etc., to achieve low cost, thermal conductivity, etc. High rate and good transparency
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Embodiment 1
[0033] Embodiment 1: Weigh epoxy resin, thixotropic agent according to the mass given in table 2 and they are mixed, and the mode of mixing is mechanical stirring, and stirring speed is 1000 rev / mins, and the time is 10 minutes, then in stirring state Add the weighed graphene and diluent successively to the mixture, continue to stir for 10 minutes after the addition is complete, add curing agent and curing accelerator to the mixture after mixing evenly, and transfer the mixture to high-speed shear after 5 minutes of mechanical stirring Mix in a cutting mixer, the mixing speed is 2000 rpm, and the time is 30s. Repeat the mixing process in the high-speed shear mixer 3 times to obtain a uniformly mixed jelly, which is the thermally conductive adhesive.
[0034] The preparation of the test sample for the bonding strength of the thermal conductive adhesive is carried out according to the standard GB7124-86. First, the copper substrate used for the test is scrubbed with ethyl acetate...
Embodiment 2~11
[0041] According to the composition and consumption listed in table 2, weigh epoxy resin, thixotropic agent and mix them, the mode of mixing is mechanical stirring, and stirring rate is 1000 rev / mins, and the time is 10 minutes, then in stirring state to mixture Add the weighed graphene and diluent in turn, continue to stir for 10 minutes after the addition is complete, add curing agent and curing accelerator to the mixture after mixing evenly, and transfer the mixture to a high-speed shear mixer after mechanical stirring for 5 minutes Mixing in a high-speed shear mixer at a mixing rate of 2000 rpm for 30 s, repeating the mixing process in a high-speed shear mixer 3 times to obtain a uniformly mixed jelly, which is the thermally conductive adhesive.
[0042] table 3
[0043]
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