Preparation method of modified GO-SiO2 composite filler and application of modified GO-SiO2 composite filler in rubber

The invention belongs to the technical field of nano composite materials, particularly relates to a preparation method of a modified GO-SiO2 composite filler and an application of the modified GO-SiO2 composite filler in rubber, provides a modified graphene oxide (GO)-silicon dioxide (SiO2) composite filler, and solves the problems that GO and SiO2 are poor in dispersion effect and easy to agglomerate in the rubber. Meanwhile, the composite filler is endowed with anti-aging performance through modified GO. The main method comprises the following steps: firstly, modifying GO in one step by utilizing an amino modifier through a hydrothermal method, wherein the modified GO is of a three-dimensional porous structure; depositing and interspersing SiO2 particles on the surface and holes of the modified GO by using a silicon source through an in-situ growth method; and preparing the novel modified GO-SiO2 composite filler. The problem of agglomeration of reinforcing filler can be effectively solved, the interaction