| 改性白炭黑/改性硅橡胶复合弹性体的自修复性能 |
| Self-healing Properties of Modified Silica/Modified Silicone Rubber Composite Elastomer |
| 投稿时间：2019-03-04 修订日期：2019-03-04 |
| DOI：10.12136/j.issn.1000-890X.2020.02.0091 |
| 中文关键词: 自修复 改性 白炭黑 硅橡胶 复合弹性体 力学性能 |
| 英文关键词: self-healing modification silica silicone rubber composite elastomer mechanical property |
| 基金项目:国家自然科学基金资助项目（51673154） |
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| 中文摘要: |
| 采用六甲基二异氰酸酯半封端的脲基嘧啶酮对硅橡胶和白炭黑进行改性，制备具有自修复性能的改性白炭黑/改性硅橡胶复合弹性体。研究表明：复合弹性体中存在氢键作用，其具有良好的自修复性能；随着改性白炭黑用量的增大，复合弹性体的初始及自修复拉伸强度均增大，但自修复效率略微降低；改性白炭黑对复合弹性体的力学性能及自修复性能均有增强作用。 |
| 英文摘要: |
| 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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