应用橡胶加工分析仪研究白炭黑胶料的硅烷化反应和填料聚集  

Study on Silanization Reaction and Filler Aggregation of Silica-filled Rubber Compound with Rubber Processing Analyzer

作　　者：王宝金 杨旭 王磊 张琳 李振华 周宏斌 WANG Baojin;YANG Xu;WANG Lei;ZHANG Lin;LI Zhenhua;ZHOU Hongbin(EVE Rubber Research Institute Co.,Ltd,Qingdao 266045,China;Stone Laboratory Co.,Ltd,Qingdao 266045,China)

机构地区：[1]怡维怡橡胶研究院有限公司,山东青岛266045 [2]思通检测技术有限公司,山东青岛266045

出　　处：《橡胶工业》2022年第1期11-16,共6页China Rubber Industry

基　　金：国家重点研发计划项目(2017YFB0307104)。

摘　　要：应用RPA2000橡胶加工分析仪测试白炭黑胶料的弹性模量变化,研究加工过程中白炭黑胶料的硅烷化反应及填料聚集情况。结果表明:白炭黑胶料中形成了一定数量的白炭黑-硅烷偶联剂-橡胶化学键,很大程度上遏制了白炭黑在胶料硫化过程中聚集;较高硫化温度虽然对减少白炭黑的聚集有利,但因为交联密度随之降低,导致白炭黑胶料的损耗因子(tanδ)仍增大;开炼机剪切作用在降低白炭黑胶料的门尼粘度同时打断了橡胶大分子链和破坏了白炭黑-硅烷偶联剂-橡胶交联结构,加剧了白炭黑聚集,使得白炭黑胶料的tanδ明显增大。RPA2000 rubber processing analyzer was used to test the change of the elastic modulus of the silica-filled rubber compound,and the silanization reaction and the filler aggregation in the process were studied.The results showed that a certain amount of the chemical bonds of the silica-silane coupling agentrubber were formed in the silica-filled rubber compound,which restrained the aggregation of the silica in the vulcanization process.It was found that higher vulcanization temperature was beneficial to reduce the aggregation of the silica,but the loss factor(tanδ)of the silica compound still increased due to the decrease of the cross-linking density.The shear action of the mill not only reduced the Mooney viscosity of the silica compound,but also damaged the cross-linking structure of the silica-silane coupling agent-rubber,which intensified the aggregation of the silica and caused a significant increase of the tanδof the silica compound.

关 键 词：橡胶加工分析仪 白炭黑 填料聚集 弹性模量 PAYNE效应 硅烷化反应 损耗因子 

分 类 号：TQ330.383[化学工程—橡胶工业] TQ330.7