助交联剂TMPTMA在高硬度丁腈胶料中的应用

王诗凝， 冯芝娟， 程超， 肖建斌*

 (青岛科技大学 橡塑材料与工程教育部重点实验室, 山东 青岛 266042)

 摘要： 研究助交联剂TMPTMA（三羟甲基丙烷三甲基丙烯酸酯）用量对NBR(丁腈)混炼胶加工性能和硫化胶力学性能的影响。结果表明:助交联剂TMPTMA不仅有加快硫化速率的作用，也具有一定的增塑效果，使混炼胶的流动性提高，同时明显提高胶料的交联密度；随着TMPTMA用量的增加，NBR硫化胶的硬度、拉伸强度、撕裂强度、100%定伸应力增大，而拉断伸长率和回弹性减小；压缩永久变形有所降低，共混胶的磨耗体积先减小后增大。

关键词： TMPTMA； 丁腈橡胶； 交联密度； 硬度

中图分类号： TQ 333.7             文献标志码：   A

 Application of Crosslinking Agent TMPTMA in NBR Compounds with High Hardness

WANG Shining， FENG Zhijuan， CHENG Chao， XIAO Jianbin

 （Key Laboratory of RubberPlastics,Ministry of Education，Qingdao University of Science and Technology，Qingdao 266042,China)

Abstract： The effects of different quantity of crosslinking agent TMPTMA on the properties of NBR compounds were studied. The results showed that the crosslinking agent TMPTMA not only accelerated the curing rate but also had a certain plasticizing effect and improved the processing performance of the blends, at the same time greatly improved the density of cross linking. With the content of TMPTMA increasing, the tensile strength, tear strength, modulus at 100% and hardness of NBR compounds increased, but the elongation at break, the compression permanent set and resilence reduced. With the content of TMPTMA increasing, the abrasion quantity of NBR compounds first decreased and then increased.

Key words: TMPTMA; NBR; density of cross linking; hardness

收稿日期： 20140708

作者简介： 王诗凝（1990—），女，硕士研究生.         *通信联系人.

文章编号：16726987（2015）03030803； DOI： 10.16351/j.16726987.2015.03.015