▎ 摘　　要

NOVELTY - Preparing reduced graphene oxide/copper nano particle modified epoxy resin composite material, comprises e.g. adding 0.1 g graphene oxide, 2.64 g ascorbic acid and 0.125 g copper sulfate into three beakers, adding deionized water to obtain graphene oxide suspension, ascorbic acid solution and copper sulfate solution, transferring sonicated graphene oxide into 100 ml blue bottle, and adding sodium hydroxide solution, magnetic stirring, adding copper sulfate solution, adding ascorbic acid solution dropwise, heating mixed solution, and stirring mixture, taking out prepared samples, drying in a freeze dryer for 48 hours to obtain nano-copper/reduced graphene oxide composite, exploring effect of reduction temperature on the preparation of copper nanoparticle graphene composites, exploring comparison of different copper doping amounts, doping composites with copper sulfate, and applying mixed paint to the aluminum foil with a brush. USE - The method is useful for preparing reduced graphene oxide/copper nano particle modified epoxy resin composite material. ADVANTAGE - The material utilizes graphene samples having different contents of oxygen-containing functional groups synthesized by controlling reduction time of redox reaction; and reduced graphene oxide are well dispersed into the epoxy resin matrix. DETAILED DESCRIPTION - Preparing reduced graphene oxide/copper nano particle modified epoxy resin composite material, comprises (i) adding 0.1 g graphene oxide, 2.64 g (15 mmol) ascorbic acid and 0.125 g copper sulfate into three beakers, adding 30, 20 and 10 ml deionized water respectively to obtain graphene oxide suspension, ascorbic acid solution and copper sulfate solution, (ii) magnetically stirring graphene oxide suspension at room temperature, and then performing ultrasonic dispersion for 1 hour, (iii) transferring sonicated graphene oxide into 100 ml blue bottle, and adding sodium hydroxide solution under magnetic stirring to adjust the pH to 7 to ensure uniform dispersion of the solution, (iv) magnetic stirring, slowly adding copper sulfate solution dropwise, and further ultrasonically dispersing for 30 minutes, slowly adding ascorbic acid solution dropwise under magnetic stirring condition, (v) heating mixed solution in a water bath at 60 degrees Celsius for 6 hours, and stirring mixture continuously during heating, heating, cooling to room temperature, taking out the prepared samples and washing them with absolute ethanol and deionized water (three cycles), drying in a freeze dryer for 48 hours to obtain nano-copper/reduced graphene oxide composite, (vi) exploring the effect of reduction temperature on the preparation of copper nanoparticle graphene composites, the composites were prepared at reduction temperatures of 40 degrees Celsius, 60 degrees Celsius and 80 degrees Celsius, respectively, labeling as copper-reduced graphene oxide-40, copper-reduced graphene oxide-60 and copper-reduced graphene oxide-80, (vii) exploring comparison of different copper doping amounts, doping composites with 0.063 g, 0.125 g and 0.250 g of copper sulfate, which were labeled as copper-reduced graphene oxide-1, copper-reduced graphene oxide-2 and copper-reduced graphene oxide-3, (viii) ratio of filler to epoxy resin is 0.5-5%, and the ratio of epoxy resin to curing agent is 10:1, and (ix) applying mixed paint to the aluminum foil with a brush.