▎ 摘　　要

NOVELTY - Preparing epoxy conductive adhesive involves weighing 0.5 g graphene oxide into a 250 ml three-necked flask, adding ethylene glycol to the three-necked flask, and performing ultrasonic dispersion for 0.5-1 hour. The silver nitrate powder is weighed into a three-necked flask, put in an oil bath to react, and added 160 ml of absolute ethanol to the three-necked flask to obtain an intermediate dispersion liquid. The 44-50 ml of the intermediate dispersion liquid is measured in the reaction kettle, added polyvinylpyrrolidone (PVP)-K30 ultrasonic dispersion, added the silver ammonia solution to the reaction kettle, and adjusted the pH value of the reaction system. The reaction kettle is moved to a constant temperature water bath, after adjusting the temperature in the reaction kettle and the stirring speed of the materials in the reaction kettle, and added 30-45 ml glucose solution to the constant pressure funnel to carry out the reduction reaction. USE - Method for preparing epoxy conductive adhesive. ADVANTAGE - The method enables to prepare epoxy conductive adhesive with low production cost, simple process, high product conductivity, and easy industrialization. DETAILED DESCRIPTION - Preparing epoxy conductive adhesive involves weighing 0.5 g graphene oxide into a 250 ml three-necked flask, adding ethylene glycol to the three-necked flask, and performing ultrasonic dispersion for 0.5-1 hour. The silver nitrate powder is weighed into a three-necked flask, put in an oil bath to react, and added 160 ml of absolute ethanol to the three-necked flask to obtain an intermediate dispersion liquid. The 44-50 ml of the intermediate dispersion liquid is measured in the reaction kettle, added polyvinylpyrrolidone (PVP)-K30 ultrasonic dispersion, added the silver ammonia solution to the reaction kettle, and adjusted the pH value of the reaction system. The reaction kettle is moved to a constant temperature water bath, after adjusting the temperature in the reaction kettle and the stirring speed of the materials in the reaction kettle, and added 30-45 ml glucose solution to the constant pressure funnel to carry out the reduction reaction. The 40-50 ml of formaldehyde solution is added to the constant pressure funnel to react and conduct suction filtration. The sample is washed with distilled water 2-3 times, and the obtained sample is placed in a 60 degrees C drying oven and dried for 24 hours to obtain a graphene-silver composite conductive filler. The E51 epoxy resin and 3,3'-Dimethyl-4,4'-Diaminodicyclohexylmethane (DMDC) curing agent are weighed into a measuring cup, added 250-400 wt.% of the graphene-silver composite conductive filler to the vector cup, mixed and stirred to obtain a conductive paste. The conductive paste is uniformly coated on the filter paper and cured in a constant temperature drying box or room temperature to obtain an epoxy conductive adhesive.