| 乙炔炭黑填充VMQ/EPDM共混导电橡胶的流变性能和结构分析 |
| Rheologlcal Properties and Structure Analysis or VMQ/EPDM Conducttve Blends Filled with Acetylene Carbon Black |
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| DOI： |
| 中文关键词: 乙炔炭黑 硅橡胶 EPDM 导电橡胶 共混 流变性能 |
| 英文关键词: acetylene carbon black silicone rubbtr EPDM conductive rubber blend rheology |
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| 中文摘要: |
| 用孟山都流变仪测定了不同共混比的甲基乙烯基硅橡胶(VMQ)/EPDM共混混炼胶的流变性能；用网笼法测定了炭黑在共混体系两相中的比例；研究了薄通次数对共混硫化胶体积电阻率的影响；用透射电镜观察了硫化胶的形态。根据试验结果得出：适当并用比和炭黑填充量的VMQ/EPDM共混硫化胶具有岛导电性的原因是：两相粘度相差较大，共混体系为明显的“海-岛”结构，而且炭黑在共混体系两相中的浓度不同；具有高导电性及其加工稳定性的VMQ/EPDM共混导电橡胶的最佳并用比例为80/20-70/30。 |
| 英文摘要: |
| The rhrtological properties of VMQ/EPDM compounds with different blending ratio were determintd by Monsanto rheometer；the proportions of carbon black in two phases of blends were determined by net-cage extraction；the influence of mill run number on the bulk resistance of blend vulcanizatts was investigared；the morphology of vulcanizates wsa studied by TEM.The results showed that the VMQ/EPDM vulcanizates with proper blending；ratio and carbon black level possessed high conductivity because of their obvious “sea-island” structure with quite different viscosity and carbon black proportion in two phases of blends；the VMQ/EPDM blends with a blending ratio of 80/20-70/30 showed the optimum conductivity and processibiliry. |
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