▎ 摘　　要

NOVELTY - An electrical and thermal conductive material comprises a substrate comprising 35-45 pts. wt. ethyl-p-methoxycinnamate-modified nano-graphene, 15-30 pts. wt. aluminum alloy powder and 15-20 pts. wt. carboxymethyl cellulose. A reinforcement includes 5-10 pts. wt. polyphenylene ether, 5-10 pts. wt. tungsten powder, 2-6 pts. wt. copper powder, 2-8 pts. wt. zinc oxide powder, 4-8 pts. wt. silicon carbide particles, 0.5-1.5 pts. wt. phthalic acid ester and 5-8 pts. wt. ethylene glycol butyl ether acetate. USE - Electrical and thermal conductive material for computer. ADVANTAGE - The electrical and thermal conductive material has reduced volume resistivity and increased thermal conductivity. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for the preparation method of electrical and thermal conductive material, which involves melting aluminum alloy powder, tungsten powder, copper powder, zinc oxide and silicon carbide particles into a liquid state, placing into chemical vapor deposition furnace at 1300-1400 degrees C for 2-3 hours, cooling, crushing, adding ethylene glycol butyl ether acetate, stirring, crosslinking and curing with the alkalized activated carboxymethyl cellulose and ethyl p-methoxycinnamate modified nano graphene, obtaining mixture (I), mixing with polyphenylene ether and phthalic acid ester, carrying out isothermal thermal gradient reaction under the protection of organotin catalysis and high purity nitrogen, obtaining mixture (II), defoaming in a vacuum defoaming machine for 1-2 hours, adding defoamed mixture (II) to mold for curing, carrying out high-frequency induction heating in hot-pressing sintering furnace under argon atmosphere at 160-180 degrees C at the pressure of 5-10 MPa for 5-8 minutes, sintering at 400-500 degrees C for 20-40 minutes, cooling to 110 degrees C at the pressure of 5-10 MPa for 30 minutes and stripping.