▎ 摘　　要

NOVELTY - Preparation method of honeycomb-shaped porous random silicon dioxide comprising (S1) adding copper catalyst to a mixed solution of N,N,N',N'-tetramethylethylenediamine (TMEDA) and dimethyl siloxane mixed ring body (DMC) in a nitrogen atmosphere, and adding acrylate (MA) and trichlorosilane under stirring at room temperature, heating and refluxing the mixed solution to obtain a hydrolyzed prepolymer, (S2) adding deionized water to the hydrolysis prepolymer for hydrolysis reaction, and filtering, washing, drying and grinding to obtain a solid powdery precursor polymer, and (S3) calcining the precursor polymer in an air atmosphere, and naturally cooling to room temperature to prepare the product. USE - The method is used for preparing honeycomb-shaped porous random silicon dioxide, which is used in a silicone rubber/graphene composite material for an electromagnetic shielding (all claimed). ADVANTAGE - The method aims to prepare the porous random silicon dioxide material by using a method which is cheap in raw materials, simple in process and easy to realize industrialization, effectively improves the wave-absorbing performance of the material, multi-phase catalysis, electromagnetic shielding (wave absorbing) material, adsorption separation, carrier, biological material, noise reduction, energy storage, ion exchange and green chemistry and has wide prospect. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: the honeycomb-shaped porous random silicon dioxide prepared by above method, where the aperture of the honeycomb porous random silicon dioxide is in a non-regular distribution state 100-600 nm; and a silicone rubber/graphene composite material for electromagnetic shielding, comprising the honeycomb porous random silicon dioxide, where the dosage of the porous random silicon dioxide is 0.2 vol.%.