▎ 摘　　要

NOVELTY - Composite material of micro-pore plate comprises a graphene-modified ultrahigh molecular weight polyethylene material, where the graphene is graphene oxide modified by an alkane chain branch, the graphene is 0.5-10 wt.% of the ultrahigh molecular weight polyethylene and the ultrahigh molecular weight polyethylene has a weight average molecular weight of 1x 105-1x 106. USE - Used as composite material of micro-pore plate. ADVANTAGE - The composite material has improved protection ability and reduced weight. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) micro-pore plate manufactured using the composite material, where the micro-pore plate is single layer or multi-layer combination, the layers of the multilayer are bonded by an adhesive, the single layer unit structure is a plate shaped structure made of the composite material and has micropores and the microporous plate has a pore size of 0.01-0.5 mu m and a porosity of 20-50%; (2) lightweight bullet-proof armor using the micro-pore plate, comprising four parts. The first part and the third part are both an elastomer layer. The second part is a ceramic layer and the fourth part is a microporous layer. The first part and the third part of the elastomer layer is an elastomer resin and the elastomer resin layer has a thickness of 1-15 mm. The ceramic layer of the second part is a bulletproof ceramic and the bulletproof ceramic is a combination of one layer or multi-layer. The fourth part of the microporous plate layer is the microplate. The first part and the third part of the lightweight bullet-proof armor are applied to the second part by spraying and joined to the fourth part by gluing; (3) manufacturing micro-pore plate, comprising (i) dispersing the graphene oxide modified by alkane grafting in paraffin oil and dispersing uniformly by high-speed stirring to obtain a mixture, (ii) adding a mixture of ultrahigh molecular weight polyethylene into the mixture, stirring uniformly, heating the mixture to 80-120 degrees C, stirring continuously at this temperature for 3-8 hours, swelling the ultrahigh molecular weight polyethylene sufficiently in the paraffin oil and adding the mixture into the extruder to extrude the melt, where the mass ratio of solid and paraffin oil in the mixture is 1:1-1:5, (iii) feeding the extruded melt into a biaxial stretching machine and subjecting to bidirectional synchronous stretching or stepwise stretching at 100-140 degrees C to obtain sheet having a thickness of 0.5-10 mm, where the stretching ratio is 2-20, and (iv) removing the paraffin oil in the sheet by extraction with gasoline or carbon tetrachloride as an extractant; and (4) manufacturing lightweight bullet-proof armor, comprising (a) selecting a thickness of a layer or multiple layers of bullet-proof ceramic layer and spraying elastomer resin on both sides of the ceramic plate to a thickness of is 1-15 mm to obtain composite plate, (b) dispersing the graphene oxide modified by alkane grafting in paraffin oil and dispersing uniformly by high speed stirring to obtain a mixture, (c) adding a mixture of ultrahigh molecular weight polyethylene into the mixture, heating the mixture to 80-120 degrees C, stirring continuously at this temperature for 3-8 hours, swelling the ultrahigh molecular weight polyethylene sufficiently in the paraffin oil and adding the mixture into the extruder to extrude the melt, where the mass ratio of solid and paraffin oil in the mixture is 1:1-1:5, (d) feeding the extruded melt into a biaxial stretching machine and subjecting to bidirectional synchronous stretching or stepwise stretching at 100-140 degrees C to obtain sheet having a thickness of 0.5-10 mm, where the stretching ratio is 2-20, (e) extracting paraffin oil from the sheet with gasoline or carbon tetrachloride as an extractant to obtain a microplate, where the microporous plate has a pore size of 0.01-0.5 mu m and a porosity of 20-50%, and (f) bonding the composite sheet and the microporous plate by an adhesive.