▎ 摘　　要

NOVELTY - Preparing a highly thermally conductive composite polymer involves mixing graphene and graphene oxide to obtain graphene mixed particles, where the weight of graphene in the graphene mixed particles is greater than the weight of graphene oxide, then uniformly mixing the following materials in the reactor, and is sequentially adding to the reactor in the order of 13.75 wt.% of distilled water, 0.15 wt.% of catalyst, 4.1 wt.% of glucose, 10 wt.% of absolute ethanol, and 50 wt.% of ethyl orthosilicate at room temperature, then rapidly stirring for a preset time, when the liquid remains transparent, cooling with water and cooling, fully removing the ethanol in the reacted product to form a prehydrolyzed gel. While stirring the prehydrolyzed gel, slowly added 22 wt.% of the graphene mixed particles, and adjusted the pH to 5 with an alkaline solution, continue to stirred at a low speed for a predetermined time, and then placed a gel at a low temperature to form a gel. USE - Method for preparing a highly thermally conductive composite polymer. ADVANTAGE - The method enables to prepare a highly thermally conductive composite polymer, that conducts research on a heat-dissipating filler, and innovatively sets a secondary dispersion, which has a large specific surface area and a three-dimensional pore structure by the first dispersion, and makes the treated graphene and graphene oxide have a very stable structure, and is not easy to be oxidized, thus ensuring that highly dispersed graphene dispersed particles can be obtained in the second dispersion process, and in order to maximize the degree of stacking of the prepared graphene dispersed particles in the polymer, the thermal conductivity is greatly improved. DETAILED DESCRIPTION - Preparing a highly thermally conductive composite polymer involves mixing graphene and graphene oxide to obtain graphene mixed particles, where the weight of graphene in the graphene mixed particles is greater than the weight of graphene oxide, then uniformly mixing the following materials in the reactor, and is sequentially adding to the reactor in the order of 13.75 wt.% of distilled water, 0.15 wt.% of catalyst, 4.1 wt.% of glucose, 10 wt.% of absolute ethanol, and 50 wt.% of ethyl orthosilicate at room temperature, then rapidly stirring for a preset time, when the liquid remains transparent, cooling with water and cooling, fully removing the ethanol in the reacted product to form a prehydrolyzed gel. While stirring the prehydrolyzed gel, slowly added 22 wt.% of the graphene mixed particles, and adjusted the pH to 5 with an alkaline solution, continue to stirred at a low speed for a predetermined time, and then placed a gel at a low temperature to form a gel. The obtained wet glue is ground and pulverized, washed with water for 2 times or more to remove the glucose template in the gel system, filtered and dried for a preset time, and ground and pulverized to obtain the graphene dispersed particles after the dispersion treatment. The 10-25 pts. wt. graphene dispersed particles, 55-80 pts. wt. the first polymer solvent, 55-80 pts. wt. high molecular polymer, and 8-10 pts. wt. additive are obtained by ultrasonic blending to obtain a highly thermally conductive composite polymer, where the content of the graphene dispersed particles ranges from 7-12 wt.%.