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使用动态热机械分析仪(DMTA)研究了丁腈橡胶丙烯腈含量、补强填充体系、增塑剂以及有机小分子化合物对丁腈橡胶阻尼性能的影响。结果表明,提高生胶极性和增加有机小分子化合物用量均可增大分子间作用力,使硫化胶阻尼峰向高温方向移动,并且峰值增大;填料粒径越小、活性越大、用量越多,与橡胶大分子的接触面积就越大,作用力就越强,其硫化胶交联密度就越大,阻尼性能就越好;增塑剂极性越小、用量越大,与橡胶基体的相容性就越差,其硫化胶的阻尼系数就越大。
The dynamic mechanical mechanical analyzer (DMTA) was used to study the influence of acrylonitrile content, reinforcing filler system, plasticizer and organic small molecule compounds on the damping properties of nitrile butadiene rubber. The results show that increasing the polarity of the raw rubber and increasing the amount of the organic small molecule compound can increase the intermolecular force and make the peak of the vulcanized rubber move to the high temperature, and the peak value increases. The smaller the particle size is, the larger the activity is. The more contact area with the rubber macromolecules, the greater the force, the stronger the vulcanizate cross-linked density, the better the damping performance; the smaller the plasticizer polarity, the greater the amount of rubber and rubber The worse the compatibility of the matrix, the greater the damping coefficient of the vulcanizate.