Electrically conductive foam

Abstract

A kind of electrically conductive foam for preventing an electronic component from electro-magnetic interference includes the following compositions: electrically conductive material accounting for about 5% to about 10% by weight; plastic material accounting for about 10% to about 16% by weight; propellant accounting for about 65% to about 75% by weight; surfactant accounting for about 0.5% to about 4% by weight; and auxiliary material accounting for about 4% to about 5% by weight.

1 . An electrically conductive foam, comprising:
 electrically conductive material accounting for about 5% to about 10% by weight;   plastic material accounting for about 10% to about 16% by weight;   propellant accounting for about 65% to about 75% by weight;   surfactant accounting for about 0.5% to about 4% by weight; and   auxiliary material accounting for about 4% to about 5% by weight.   
     
     
         2 . The conductive foam of  claim 1 , wherein the electrically conductive material comprises graphite grains or metal grains with good electrically conductive performance 
     
     
         3 . The conductive foam of  claim 1 , wherein the plastic material comprises a material selected from the group consisting of polyisobutyl methacrylate, and acrylic resin. 
     
     
         4 . The conductive foam of  claim 1 , wherein the propellant comprises a material selected from the group consisting of ethylene-vinyl acetate copolymer, polyethylene, and butane. 
     
     
         5 . The conductive foam of  claim 1 , wherein the surfactant comprises sorbitan trioleate. 
     
     
         6 . The conductive foam of  claim 1 , wherein the auxiliary material comprises at least one of plasticizer, silicon rubber, pigment, and flame retardant.