The invention relates to a liquid
silicone rubber composition and a preparation method thereof. According to the composition, the modified liquid
silicone rubber, the
graphene filler and the tert-butyl peroxybenzoate cross-linking agent are introduced, and a proper catalyst (such as
titanium fluoride) and a proper
plasticizer (such as dioctyl
phthalate) are combined, so that the
mechanical property, the heat
conductivity and the self-repairing capability of the liquid
silicone rubber are effectively improved. In the preparation process,
graphene is used as a filler to enhance the
thermal conductivity and tensile strength of the material, and the cross-linking reaction improves the
structural stability and durability of the material. The composition has excellent high
temperature resistance,
chemical resistance and excellent self-repairing characteristic, and can provide reliable
moisture-proof and insulation protection in the fields of
electrical equipment, automobiles,
medical treatment and the like. Experimental results show that the original performance of the liquid
silicone rubber material can be recovered through heat treatment after the liquid
silicone rubber material is damaged for multiple times, and the liquid
silicone rubber material shows relatively high repair efficiency. The liquid silicone rubber composition provided by the invention has a wide application prospect.