Butadiene-chlorinated polyethylene-styrene graft copolymer rubber and preparation method thereof

The invention discloses butadiene-chlorinated polyethylene-styrene graft copolymer rubber and a preparation method thereof and belongs to the field of preparation of chlorinated polyethylene rubber. The preparation method comprises: putting chlorinated polyethylene rubber powder into a closed reactor, adding an emulsifier, an anti-sticking agent, an initiator and a chain transfer agent into a reactor, adding styrene and a butadiene monomer into the reactor in a nitrogen atmosphere, heating the materials, cooling the materials to obtain butadiene-chlorinated polyethylene-styrene graft copolymerized rubber slurry, putting the slurry into a vacuum rubber filter, separating a washing liquid, carrying out vacuum suction filtration dehydration and carrying out drying to obtain butadiene-chlorinated polyethylene-styrene graft copolymer rubber powder. A butadiene branch chain is grafted to the macromolecular chain and contains a double bond having high activity so that the sulfur/accelerator system or sulfur carrier