It is a challenge to synthesize materials that possess the properties of high stretchability and self‐healability. Herein a new poly(dimethylsiloxane) elastomer with high stretchability, room‐temperature self‐healability, repeatable reprocessability, and controlled degradability is reported by incorporating an aromatic disulfide bond and imine bond. The as‐prepared elastomer can be stretched to over 2200% of its original length. Without external stimuli, a damaged sheet can completely heal in 4 h. In addition, the elastomer can be reprocessed multiple times without obvious performance degradation and degraded controllably by three ways. All these properties of the elastomer can be ascribed to the unique dual‐dynamic‐covalent sacrificial system.

中文翻译：

---

具有可再加工性和可降解性的高度可拉伸的自修复聚二甲基硅氧烷弹性体

合成具有高拉伸性和自愈性的材料是一项挑战。本文报道了通过结合芳族二硫键和亚胺键，具有高拉伸性，室温自愈性，可重复加工性和可控降解性的新型聚二甲基硅氧烷弹性体。所制备的弹性体可拉伸至其原始长度的2200％以上。没有外部刺激，受损的床单可以在4小时内完全愈合。另外，可以通过三种方式对弹性体进行多次加工，而不会出现明显的性能下降和可控地下降。弹性体的所有这些特性可以归因于独特的双动力共价牺牲系统。