▎ 摘　　要

NOVELTY - Graphene nanocomposite material with heat resistance, comprises 35-50 pts. wt. hollow composite microsphere, 50-60 pts. wt. modified graphene fiber, 10-20 pts. wt. nano-silica, 75-100 pts. wt. N, N-dimethylformamide and 35-50 pts. wt. acetone. The composite material is prepared by (i) preparing primary composite fiber; (ii) setting the temperature of a double-roll open mill to 35-55 degrees C, adding butadiene rubber, mixing for 3-15 minutes, adding primary composite fiber, uniformly mixing and adding nano-silica to continue mixing to obtain a mixture; and (iii) placing the mixture in a mold, placing it into a plate vulcanizer, adjusting the air pressure to 5-10 MPa, setting the hot pressing temperature at 100-130 degrees C, pressing for 10-20 minutes, taking out, placing in a water bath at 0-10 degrees C for cooling and demolding to obtain a composite material of 1-10 mm. USE - The graphene nanocomposite material is useful in the fields of flexible electronic components, flexible energy storage devices and sensor devices. ADVANTAGE - The method has strong adsorption performance, adsorbs on the surface of modified graphene fibers, adsorbs nano-silica and promotes the mixing of nano-silica and graphene oxide to ensure the stability of the system. The nanocomposite material has excellent electrical conductivity, heat resistance, high quality, high strength and excellent stability. DETAILED DESCRIPTION - Graphene nanocomposite material with heat resistance, comprises 35-50 pts. wt. hollow composite microsphere, 50-60 pts. wt. modified graphene fiber, 10-20 pts. wt. nano-silica, 75-100 pts. wt. N, N-dimethylformamide and 35-50 pts. wt. acetone. The composite material is prepared by (i) mixing N, N-dimethylformamide and acetone as organic solvents, dividing the mixed solvent into two parts, adding a hollow composite microsphere into a part of it as a mixed solution A, adding the modified graphene fiber into the other part as the mixed liquid B, mixing the mixed liquid A and the mixed liquid B, adding them into a spinning box, spraying them from the spinneret and transferring to de-ionized water to obtain primary composite fiber; (ii) setting the temperature of a double-roll open mill to 35-55 degrees C, adding butadiene rubber, mixing for 3-15 minutes, adding primary composite fiber, uniformly mixing and adding nano-silica to continue mixing to obtain a mixture; and (iii) placing the mixture in a mold, placing it into a plate vulcanizer, adjusting the air pressure to 5-10 MPa, setting the hot pressing temperature at 100-130 degrees C, pressing for 10-20 minutes, taking out, placing in a water bath at 0-10 degrees C for cooling and demolding to obtain a composite material of 1-10 mm.