| 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 Name | Affiliation | E-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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