The invention provides hydrophobicity-enhanced heat-vulcanized
silicone rubber and a preparation method thereof. The specific preparation method of the
silicone rubber comprises steps as follows: divinyltetramethyldisiloxane is mixed with a
mixed solution of concentrated
hydrochloric acid, deionized water and
ethanol, the mixture is mechanically stirred, ethyl
orthosilicate is dropwise added, the mixture is subjected to hydrolytic condensation, methylbenzene is added for extraction and layering, methyl vinyl
silicone resin is obtained, crosslinked
polyethylene particles are added to the methyl vinyl
silicone resin, the mixture is stirred uniformly and subjected to molding curing and vacuum heat treatment, and the
polyethylene particle crosslinked methyl vinyl
silicone resin is obtained; nano-
montmorillonite, amorphous
alumina and
titanium dioxide are added to a
polydimethylsiloxane prepolymer, the mixture is mixed and subjected to crosslinking and curing, and a reinforced material coated with organic
silicone rubber is obtained; the
polyethylene particle crosslinked methyl vinyl
silicone resin, the reinforced material coated with organic
silicone rubber, 2,4-dichlorobenzoyl
peroxide, diphenyl silanediol and
octamethylcyclotetrasiloxane are mixed uniformly, left to stand, subjected to open milling and secondary
vulcanization, and the hydrophobicity-enhanced heat-vulcanized
silicone rubber is obtained.