文章摘要
Self-healing Properties of Modified Silica/Modified Silicone Rubber Composite Elastomer
Received:March 04, 2019  Revised:March 04, 2019
DOI：10.12136/j.issn.1000-890X.2020.02.0091
Key Words: self-healing；modification；silica；silicone rubber；composite elastomer；mechanical property
Author NameAffiliationE-mail
CHEN Wei Wuhan University of Technology hbzxyzcw@163.com 
HE Jiahui Wuhan University of Technology  
CHEN Dekang Wuhan University of Technology  
XIONG Chuanxi＊* Wuhan University of Technology cxiong@whut.edu.cn 
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Abstract:
      The silica and silicone rubber were modified by using ureidopyrimidinone which was end-capped with hexamethyldiisocyanate（UPy-NCO），and the modified silica/modified silicone rubber composite elastomer with self-healing property was prepared. The testing results showed that hydrogen bonding existed in the composite elastomer，which had a good self-healing property. With the increase of the addition level of modified silica，the initial tensile strength of the composite elastomer increased，and the tensile strength after self-healing also increased，but the self-healing efficiency decreased slightly. It was found that modified silica enhanced not only the mechanical property but also self-healing property of the composite elastomer.
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