天然橡胶硫黄/过氧化物并用硫化体系的助交联剂优化配合

摘要

The composition of secondary crosslinker of sulfur/peroxide curing system for NR was optimized by orthogonal design method,and the studied curing co-agents were ZDMA,HVA-2,TAIC and BDDA.The results showed that ZDMA,HVA-2 and TAlC had a highly significant effect on the elongation at break of vulcanized NR compound,and had a significant effect on the tear strength and fatigue property.BDDA had a certain influence on the elongation at break,tear strength and fatigue property.ZDMA had a significant effect on the aging resistance,and HVA-2,TAIC and BDDA had a certain influence on the aging resistance.The optimized composition of secondary crosslinker system was as follows:ZDMA 2,HVA-2 1.5,TAIC 0.5,andBDDA 0.5.%采用正交试验法研究天然橡胶的硫黄/过氧化物并用硫化体系中助交联剂ZDMA,HVA 2,TAIC和BDDA的优化配合.结果表明:ZDMA,HVA-2和TAlC对胶料的拉断伸长率有高度显著影响,ZDMA,HVA-2和TAIC对胶料的撕裂强度和伸张疲劳性能有显著影响,BDDA对胶料的拉断伸长率、撕裂强度和伸张疲劳性能有一定影响,ZDMA对胶料的热老化性能有显著影响,HVA-2,TAIC和BDDA对胶料的热老化性能有一定影响;助交联剂的优化配合为ZDMA 2,HVA-2 1.5,TAIC 0.5,BDDA 0.5.