A kind of modified graphene oxide polymer composite material and preparation method thereof

Abstract

The invention provides a modified graphene oxide polymer composite material and a preparation method thereof. The beneficial effect is: the modified graphene oxide is prepared on the basis of pyrolytic expansion method, the graphene oxide is dispersed in the organic solvent, and the active functional groups such as hydroxyl and carboxyl groups on the graphene oxide are grafted with double bonds. The acrylate segment of the modified graphene oxide, acrylic resin, reactive diluent, filler, photoinitiator, etc. are compounded to form a compound, which is baked to remove the solvent after coating, and then cured under the irradiation of a high-pressure ultraviolet mercury lamp. Thereby obtaining the modified graphene oxide polymer composite material. The composite material described in the present invention is mixed under the liquid, and the graphene oxide is modified through the modification of the acrylate segment, and has good compatibility with other resins, which is beneficial to the uniform dispersion of the graphene oxide in the polymer material. After uniformity, the solid modified graphene oxide polymer composite material is obtained through rapid curing by ultraviolet light.

Description

technical field [0001] The invention relates to the technical field of graphene, in particular to a modified graphene oxide polymer composite material and a preparation method thereof. Background technique [0002] Graphene is a new material with unique properties: it is the thinnest but also the hardest nanomaterial in the world, it is almost completely transparent, and only a small part (2.3%) of vertically incident visible light will be absorbed by graphene , and most of the light will pass through; its thermal conductivity is better than any known material, and its thermal conductivity is as high as 5300W / m K, which is higher than that of carbon nanotubes and diamonds; its electron mobility exceeds 15000cm at room temperature 2 / V·s, which is higher than that of carbon nanotubes or silicon crystals, and the resistivity is only about 10 -6 Ω·cm, which is lower than copper or silver, and is currently the material with the smallest resistivity in the world. It is so dense...

AI Technical Summary

Problems solved by technology

However, the current research on covalently bonded graphene oxide mainly focuses on the grafting of an organic segment on the surface of graphene oxide, and most of them only study the dispersion stability of modified graphene oxide in organic solvents. A small amount of research is to prepare functional materials by combining covalently bonded graphene oxide and polymer materials by mixing methods.