文章摘要
Study on Silanization Reaction and Filler Aggregation of Silica-filled Rubber Compound with Rubber Processing Analyzer
Received:April 23, 2021  Revised:April 23, 2021
DOI:10.12136/j.issn.1000-890X.2022.01.0011
Key Words: rubber processing analyzer;silica;filler aggregation;elastic modulus;Payne effect; silanization reaction;loss factor
Author NameAffiliationE-mail
WANG Baojin* EVE Rubber Institute Co.,Ltd wangbj@everi.com.cn 
YANG Xu EVE Rubber Institute Co.,Ltd  
WANG Lei Stone Laboratory Co.,Ltd  
ZHANG Lin EVE Rubber Institute Co.,Ltd  
LI Zhenhua EVE Rubber Institute Co.,Ltd  
ZHOU Hongbin EVE Rubber Institute Co.,Ltd  
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Abstract:
      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 tanδ of the silica compound
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