Abstract A facile approach to synthesize silicone elastomers with good mechanical properties as well as high self-healing efficiency is reported in the present research. The silicone elastomer is synthesized through amino-ene Michael addition reaction, with amino groups from aminopropyl-terminated polydimethylsiloxane and acrylate groups from multifunctional acrylate monomer. Meanwhile, basic catalyst tetramethylammonium hydroxide is added into the elastomer to derive a dynamically crosslinked network. Tensile strength and break elongation of the synthesized elastomers are 1.08 ± 0.06 MPa and 206.10 ± 9.55%, respectively, indicating good mechanical properties of the elastomers. The fractured samples can recover 91% of their original strength after healing at 105 °C for 24 h. Moreover, the silicone elastomer in this work is recyclable due to the dynamic siloxane equilibration reaction.

中文翻译：

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氨基-烯迈克尔加成反应合成的基于硅氧烷平衡的自修复聚硅氧烷弹性体

摘要 本研究报道了一种合成具有良好机械性能和高自愈效率的有机硅弹性体的简便方法。有机硅弹性体是通过氨基-烯迈克尔加成反应合成的，氨基来自氨基丙基封端的聚二甲基硅氧烷，丙烯酸基团来自多官能丙烯酸酯单体。同时，在弹性体中加入碱性催化剂四甲基氢氧化铵，得到动态交联网络。合成弹性体的拉伸强度和断裂伸长率分别为 1.08 ± 0.06 MPa 和 206.10 ± 9.55%，表明弹性体具有良好的机械性能。断裂样品在 105℃下愈合 24 小时后可恢复其原始强度的 91%。而且，