碳五石油树脂/氯化丁基橡胶复合材料的阻尼机理  

Damping mechanism of carbon five petroleum resin/chlorinated butyl rubber composites

作　　者：赵永凯 张拓 赵秀英[1] 赵伟[1] 李晓林[1] ZHAO Yong-kai;ZHANG Tuo;ZHAO Xiu-ying;ZHAO Wei;LI Xiao-lin(Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials,Beijing University of Chemical Technology, Beijing 100029, China;Dalian Measurement and Control Technology Institute, Dalian 116013, China)

机构地区：[1]北京化工大学北京市新型高分子材料制备与加工重点实验室,北京100029 [2]大连测控技术研究所,辽宁大连116013

出　　处：《合成橡胶工业》2019年第4期266-271,共6页China Synthetic Rubber Industry

摘　　要：采用分子动力学模拟方法并结合实验研究了碳五(C 5)石油树脂/氯化丁基橡胶(CIIR)复合材料的阻尼机理。分子模拟研究表明,随着C 5石油树脂用量的增加,C 5石油树脂/CIIR复合体系的自由体积分数和均方位移逐渐减小,结合能逐渐增大,均方回转半径增大,表明CIIR与C 5石油树脂间的相容性较好,分子链堆砌密实,从而限制了CIIR大分子链的运动;同时,复合材料的玻璃化转变温度升高,损耗峰移向高温区域,有效阻尼温域拓宽。结合模拟分析和接触角实验结果证实,C 5石油树脂与CIIR之间的范德华作用力对提高复合材料的阻尼性能起到了主导作用。The damping mechanism of carbon five( C 5 )petroleum resin/chlorinated butyl rubber (CIIR) composites was studied by molecular dynamics simulation and experiments. The molecular dynamics simulation results showed that with the increase of the amount of C 5 petroleum resin, the free volume fraction and the mean square displacement of the C 5 petroleum resin/CIIR composites system became smaller, the binding energy increased gradually, and the mean square radius of gyration increased, indicating that the compatibility between CIIR and C 5 petroleum resin was good, and the molecular chains were stacked compactly, which limited the movement of the CIIR macromolecular chains;at the same time, the glass transition temperature of the composites increased, the loss peak moved to the high temperature region, and the effective damping temperature domain was broadened. Combined with the analysis of simulation and the contact angle experiments, it was confirmed that the van der Waals force between C 5 petroleum resin and CIIR played a leading role in improving the damping performance of the composite.

关 键 词：氯化丁基橡胶 碳五石油树脂 复合材料 阻尼机理 分子动力学模拟 

分 类 号：TQ333.6[化学工程—橡胶工业]