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配合体系对羧酸型丙烯酸酯橡胶性能的影响

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  • Key Words:羧酸型丙烯酸酯橡胶;;促进剂;;炭黑补强;;力学性能

  • Abstract:采用新型环保促进剂(ACT-55P),以炭黑作为补强体系,通过密炼与开炼的方法制得羧酸型丙烯酸酯橡胶(ACM)混炼胶,与传统胍类促进剂(DOTG)作对比,探究不同硫化体系对两种羧酸型ACM的影响,并研究了不同炭黑(N550)用量对胶料性能的影响。结果表明:与DOTG相比,采用ACT-55P的ACM胶料的黏度较低,加工性能改善,交联程度增大,焦烧时间缩短,工艺正硫化时间延长,硫化胶的拉伸强度增强,热空气老化性提高,但压缩永久变形和撕裂性能变差;随着炭黑份数的增加,门尼黏度提高,力学性能增强,形成的填料网络越强,Payne效应越明显;当炭黑用量从55份增加至75份时,门尼黏度值和Payne效应显著增大,硫化速率下降明显,对拉伸强度增长不大,因此55份为炭黑的最佳用量。

  • Volume:v.39;No.173

  • Issue:04

  • Translation or Not:no

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