Self-Healing Polysiloxane Elastomer Based on Integration of Covalent and Reversible Networks

• DOI: 10.1021/acs.iecr.9b04355
• Publication Date: 2019-10-31T14:49:29Z
• Authors: Qian Yan; Liwei Zhao; Qiancun Cheng; Tong Zhang; Bo Jiang; Yuanjun Song; Yudong Huang
• Keywords: Furan; Maleimide

In this paper, a thermally reversible self-healing polysiloxane elastomer based on Diels–Alder (DA) chemistry was successfully prepared via containing maleimide groups and furan rings. The hyperbranched (HPSis) rings double bonds synthesized introduced to improve the mechanical strength of polymer. without HPSis only 0.20 MPa; however, it can be increased 0.87 MPa with introduction HPSis. Since contain multi-furan required for reactions, addition would not have negative effect performance. cracks surface self-healed in short time, efficiency achieve 85%. Moreover, flexible conductive composites poly(dimethylsiloxane)/carbon black (PDMS/CB) were fabricated by mixing matrix filler carbon (CB) applied wearable sensors.