Automobile rubber sealing strip and preparing method thereof

The invention discloses an automobile rubber sealing strip. The automobile rubber sealing strip is prepared from, by weight, 100-120 parts of raw nitrile rubber, 50-100 parts of raw polysulfide rubber, 1-5 parts of benzalkonium chloride, 2-8 parts of linalyl acetate, 1-4 parts of isoamyl acetate, 4-12 parts of ethyl alcohol, 25-40 parts of sericite powder, 1-6 parts of dodecyl ethyoxyl sulphobetaine, 1-4 parts of light screening agent, 3-8 parts of dispersing agent, 1-3 parts of sulfur, 2-6 parts of zinc oxide, 2-6 parts of antioxidant, 1-3 parts of plasticizer, 2-4 parts of coupling agent and 3-6 parts of initiating agent. The automobile rubber sealing strip is good in air tightness, high temperature resistance and shake-proof performance, capable of resisting oil, water and solvents, pleasant in smell and low in production cost, can be used for a long time in the moist environment and high-light exposure without metamorphism and cracking, and is simple in preparing method and high in vulcanization efficiency.