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纳米二氧化硅填充星形溶聚丁苯橡胶/二氧化硅共凝聚胶的结构与性能
Structure and properties of star-shaped solution polymerized styrene-butadiene rubber/silica co-coagulating rubber filled with nano-silica
【摘要】 研究了有机化纳米SiO2分别填充星形溶聚丁苯橡胶(SSBR)和SSBR/SiO2共凝聚胶(N-SSBR)的结构与性能。结果表明,纳米SiO2在N-SSBR中的混入速度明显快于SSBR,N-SSBR中的SiO2粉体呈纳米尺度分散,N-SSBR的玻璃化转变温度较星形SSBR高1~2℃。有机化纳米SiO2填充N-SSBR硫化胶的物理机械性能比其等量填充SSBR硫化胶的优异,其Payne效应小,分散性更好,玻璃化转变峰向高温偏移,损耗因子峰值降低,且60℃下的内摩擦损耗较低。
【Abstract】 The structure and properties of star-shaped solution polymerized styrene-butadiene ru-bber(SSBR) and nano-silica/SSBR co-coagulated rubber(N-SSBR),and their composites filled with different amount of organically modified silica were studied.The results showed that the mixing rate of the modified silica with N-SSBR was faster than that with SSBR,and silica particles were dispersed in nano-size in N-SSBR.Compared with SSBR pure rubber,the glass transition temperature of N-SSBR increased by about 1-2 ℃.Compared with SSBR filled with modified silica,N-SSBR filled with the same amount of silica possessed more excellent mechanical properties,lower Payne effect,better dispersion,lower peak value of internal friction loss,and its glass transition temperature shifted about 2 ℃ toward higher temperature.Furthermore,at 60 ℃,N-SSBR/silica composite showed lower internal friction resistance than that of SSBR/silica composite.
【Key words】 solution polymerized styrene-butadiene rubber/nano-silica co-coagulated rubber; star-shaped solution polymerized styrene-butadiene rubber; organically modified nano-silica; filler dispersion; microstructure; mechanical property;
- 【文献出处】 合成橡胶工业 ,China Synthetic Rubber Industry , 编辑部邮箱 ,2009年01期
- 【分类号】TQ333.1
- 【被引频次】10
- 【下载频次】293