High-strength and high-elasticity rubber composite material for sealing ring and preparation method thereof

The invention discloses a high-strength and high-elasticity rubber composite material for a sealing ring. Comprising the following raw materials in parts by weight: 45-58 parts of nitrile rubber, 15-20 parts of natural rubber, 7-10 parts of phenylene ether silicone rubber, 20-27 parts of a polyurethane elastomer, 5-6 parts of maleic anhydride grafted polyethylene, 4-6 parts of white carbon black, 0.5-0.8 part of aluminum oxide, 1-1.4 parts of zinc oxide, 0.07-0.09 part of toluene diisocyanate, 2.5-4.5 parts of an anti-aging agent, 2-4 parts of a heat stabilizer and 2-4 parts of a cross-linking agent. The high-strength and high-elasticity rubber composite material for the sealing ring not only has good sealing performance, but also has high tensile strength and excellent mechanical properties; in addition, the anti-aging performance is good, the service life is long, and the elasticity is high compared with the prior art. 本发明公开了一种密封圈用高强高弹橡胶复合材料，包括以下重量份的原料：丁腈橡胶45～58份、天然橡胶15～20份、苯醚撑硅橡胶7～10份、聚氨酯弹性体20～27份、马来酸酐接枝聚乙