乙烯-醋酸乙烯共聚物对天然橡胶/丁腈橡胶并用胶性能的影响

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英文篇名：Effect of ethylene-vinyl acetate copolymer on the properties of natural rubber/nitrile rubber blended rubber 作者：魏继军 ; 刘英杰 ; 高晟强 ; 吕康辉 ; 薛美玲 英文作者：Wei Jijun;Liu Yingjie;Gao Shengqiang;Lv Kanghui;Xue Meiling;Qingdao University of Science & Technology; 关键词：天然橡胶 ; 丁苯橡胶 ; EVA ; 硫化特性 ; 力学性能 ; 阻尼性能 英文关键词：natural rubber;;styrene-butadiene rubber;;EVA;;vulcanization characteristics;;mechanical properties;;damping properties 中文刊名：XJJZ 英文刊名：China Rubber/Plastics Technology and Equipment 机构：青岛科技大学高分子科学与工程学院; 出版日期：2019-05-01 出版单位：橡塑技术与装备 年：2019 期：v.45;No.445 语种：中文; 页：XJJZ201909002 页数：5 CN：09 ISSN：11-4534/TQ 分类号：12-16

摘要

研究了EVA(乙烯-醋酸乙烯共聚物)对天然橡胶(NR)/丁腈橡胶(NBR)并用胶硫化特性、力学性能、阻尼性能、压缩生热的影响。结果表明:随着EVA含量的增多,NR/NBR并用胶的硫化速度先升后降;拉伸强度降低,撕裂强度则先增加后下降,硬度增加,回弹性降低;NR/NBR并用胶在拉伸/压缩-恢复过程中的HED和HLE均先减少后增大; DMA谱图中NR与NBR相损耗峰均移向低温,有效阻尼温域拓宽;压缩永久变形和疲劳温升增加。
        The effects of EVA(ethylene-vinyl acetate copolymer) on the vulcanization properties,mechanical properties, damping properties and compression heat generation of natural rubber(NR)/nitrile rubber(NBR) were investigated in this paper. The results show that with the increase of EVA content,the vulcanization rate of NR/NBR blended rubber increased first and then decreased; The tensile strength decreased, and the tear strength increased first and then decreased; the hardness increased, and the rebound resilience decreased; The HED and HLE of the NR/NBR blended rubber first reduced and then increased during the stretching/compression-recovery process; In the DMA spectrum, the loss peaks of NR and NBR phase shift to low temperature, and the effective damping temperature domain is broadened;compression set and fatigue temperature rise increased.

引文

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