改性煤系高岭土对丁苯橡胶性能补强研究

本试验主要研究煤系高岭土有机改性及其对橡胶的补强性能。将经过表面改性的煤系高岭土部分替代白炭黑填充到丁苯橡胶(SBR)基体中,利用熔融共混法制备出改性高岭土/SBR复合材料,并进行硫化性能及力学性能分析。结果表明,改性煤系高岭土的替代量为60%时,t10(焦烧时间)和t90(正硫化时间)达到最小值,300%定伸应力达到8.0 MPa,拉伸强度达到20.0 MPa,撕裂强度达到60 kN/m,SBR复合材料的硫化加工性能与力学性能均明显改善。

Properties of Styrene Butadiene Rubber Composites Filled with Modified Coal Series Kaolin

In this study,the organic modification of coal series kaolin and its reinforcing properties of the rubber were investigated.The surfacemodified coal series kaolin was partially filled with white carbon to the styrene-butadiene rubber matrix,the modified kaolin/SBR composite was prepared by melt blending method,and the vulcanization and mechanical properties were analyzed.The results show that when the filling fraction of modified coal kaolin is 60%,t10 and t90 reach the minimum value,300%tensile stress reaches 8.0 MPa,tensile strength reaches 20.0 MPa,tear strength reaches 60 kN/m.The vulcanization and mechanical properties of SBR composite are significantly improved.