摘要
用核磁共振(NMR)法(仪器为NMR法交联密度测试仪)研究炭黑/白炭黑并用比对胶料交联密度的影响。结果表明:NMR法测试胶料交联密度,可反映炭黑和白炭黑与橡胶的作用;采用NMR法测试的胶料交联密度对炭黑/白炭黑并用比变化敏感;炭黑用量增大,硫化胶的交联密度增大;偶联剂Si75能减少白炭黑与炭黑之间的作用,促进白炭黑分散,消除或减轻白炭黑用量较大导致的胶料硫化延迟。
The influence of the ratio of carbon black and silica on the cross-linking degree of rubber compound was studied using nuclear magnetic resonance（NMR） method with a NMR based cross-linking degree tester. The results of NMR based cross-linking degree test could reflect the interactions between of silica, carbon black and rubber. It was found that the cross-linking degree was highly dependent on the ratio of carbon black and silica. The cross-linking degree increased with the increase of carbon black content. The addition of silane coupling agent Si75 could reduce the interaction between silica and carbon black, improve the dispersion of silica, and minimize the delay of vulcanization due to the large amount of silica.
出处
《橡胶科技》
2015年第8期46-51,共6页
Rubber Science and Technology
关键词
核磁共振法
交联密度
测试仪
炭黑
白炭黑
nuclear magnetic resonance
cross-linking density
tester
carbon black
silica
