补强体系对汽车用火花塞帽硅橡胶性能的影响

Effect of Filling System on Properties of Automotive Spark Plug Caps Silicone Rubber

采用机械共混法,探讨了白炭黑的用量和不同生产厂家的白炭黑对汽车用火花塞帽硅橡胶性能的影响。研究表明:德固赛A型号气相法白炭黑用量为50份时,硅橡胶的综合物理机械性能较好,硬度为64邵A,拉伸强度为11.34 MPa,伸长率为444%,100%定伸应力为3.56 MPa,300%定伸应力为7.21 MPa,撕裂强度为16.67 KN/m,在230℃×50 h老化条件下,性能变化较小。

The paper is about effects of the amount of silica and the silica from different manufacturers on the properties of silicone rubber of spark plug cap for automobile by mechanical blending method.The results showed thatthe comprehensive physical and mechanical properties of silicone rubber are better when the amount of Degussa type A fumed silicawas 50 phr.The hardness is 64 shore A,the tensile strength is 11.34 MPa,the elongation at break is 444%,the stress at 100%elongation is 3.56MPa,the stress at 300%elongation is 7.21 MPa,the tear strength is 16.67 KN/m.The propertieschange of silicone rubber are little at 230℃×50 h aging conditions.