The fabrication of silicon elastomer with good mechanical properties and self‐healing ability is still a challenge. Herein, a facile method to fabricate a transparent healable double‐network (DN) elastomer by introducing polyborosiloxane (PBS) into self‐healing polydimethylsiloxane (HPDMS) networks is demonstrated. Tensile testing shows that the mechanical properties of PBS and HPDMS are both improved. The DN elastomer shows high transparency across the visible spectrum with an average transmittance of 75%. Because of the breakage and reconstruction of reversible imine bonds and BO dative bonds, the elastomer exhibits excellent self‐healing properties with a maximum healing efficiency of 98% at room temperature. Meanwhile, the elastomer can be repeatedly reprocessed with a recovery of 85% of virgin mechanical strengths. This work provides a new insight to design transparent, self‐healing silicone elastomers with a simple and eco‐friendly method.

中文翻译：

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基于双重可逆网络的自修复透明弹性体

具有良好机械性能和自我修复能力的硅弹性体的制造仍然是一个挑战。本文展示了一种通过将聚硼硅氧烷（PBS）引入自修复聚二甲基硅氧烷（HPDMS）网络中来制造透明可修复双网络（DN）弹性体的简便方法。拉伸测试表明PBS和HPDMS的机械性能均得到改善。DN弹性体在可见光谱范围内显示高透明度，平均透射率为75％。因为可逆亚胺键和B中的破损和重建在弹性键上，该弹性体表现出出色的自愈性能，在室温下的最大修复效率为98％。同时，可以将弹性体重复加工，恢复原始机械强度的85％。这项工作为通过简单且环保的方法设计透明的，可自我修复的有机硅弹性体提供了新的见解。