促进剂1,5-亚戊基二硫代氨基甲酸锌赋予天然橡胶的交联结构及均化应力作用
Natural Rubber Crosslinking Structure and Homogenization Stress Affected by Zinc 1,5-Pentylidene Dithiocarbamate
肖小坤 1刘大晨 1朱博聪 1薛奥楠 1王志强2
作者信息
- 1. 沈阳化工大学材料科学与工程学院,沈阳 110142
- 2. 蔚林新材料科技股份有限公司,濮阳 457000
- 折叠
摘要
以1,5-亚戊基二硫代氨基甲酸锌(ZPDC)为促进剂,对天然橡胶(NR)的交联结构和均化应力作用进行研究.研究发现,促进剂ZPDC配合NR的硫化胶交联键以多硫键为主,对比于同类促进剂二正丁基二硫代氨基甲酸锌(BZ)具有更高含量的多硫键,赋予橡胶更好的均化应力作用,主要表现在抗撕裂性能的显著提升.此外,通过对NR配合促进剂ZPDC的硫化历程和力学性能的分析研究,发现适宜的硫化温度条件为120～130 ℃,用量为1.5～2.0 phr,硫化胶表现出最好的均化应力作用.
Abstract
The crosslinking structure and homogenization stress of natural rubber(NR)were studied by using zinc 1,5-pentyldithiocarbamate(ZPDC)as accelerator.It was found that the crosslinking bond of the vulcanizate of accelerator ZPDC combined with NR was mainly polysulfide bond.Compared with the similar accelerator zinc dibutyldithiocarbamate(BZ),it had a higher content of polysulfide bond,which gave the rubber a better homogenizing stress effect,mainly in the significant improvement of tear resistance.In addition,through the analysis of the vulcanization process and mechanical properties of the NR compound accelerator ZPDC,the results show that the suitable vulcanization temperature conditions are 120-130 ℃,the amount of 1.5-2.0 phr,and the vulcanizate shows the best homogenization stress effect.
关键词
天然橡胶/均化用力作用/交联结构/抗撕裂性能Key words
Natural rubber/Homogenization force efect/Crosslinking structure/Tear resistance引用本文复制引用
出版年
2024
NETL
NSTL
维普
万方数据