在丁苯橡胶 (SBR)基体中分别加入少量尼龙短纤维和芳纶短纤维,制备了橡胶复合材料,研究了短纤维分散性及短纤维对橡胶复合材料加工性能、拉伸力学性能、硬度及动态力学性能的影响。结果表明:填充量为2份时,短纤维可以明显地改善橡胶复合材料模量和硬度、撕裂强度、动态储能模量、动态损耗,芳纶短纤维改性效果优于尼龙短纤维;增加纤维长度 (从1mm增加到3mm时)有利于提高改善效果;相比尼龙短纤维,芳纶短纤维的分散性较差,橡胶加工过程中初始模量增加较大。
The nylon short fiber and aramid short fiber were respectively utilized as the fillers in styrene butadiene rubber (SBR) matrix.The dispersion and the effect of the fillers on the processing characteristics,tensile mechanical properties,hardness and dynamic mechanical properties of SBR composites were studied.The results revealed that at 2phr content,the introduction of short fiber into SBR improved obviously the modulus and hardness,tearing strength,dynamic storage modulus and dynamic loss.The enhancement of aramid short fiber was superior to that of nylon short fiber.The increase of short fiber length from 1mm to 3mm was helpful to improve the above-mentioned properties.Compared with the nylon short fiber,aramid short fiber exhibited poor dispersion and initial processing modulus for SBR composites.
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基金资助
国家自然科学基金面上项目(21576230);塑料卫生与安全质量评价技术北京市重点实验室开放课题(BS201709);北京工商大学校内专项(PXM2018-014213-000033);运城学院科研启动项目(YQ2017007)
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