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Preparation and research of intrinsic self-healing elastomers based on hydrogen and ionic bond
Composites Science and Technology ( IF 9.1 ) Pub Date : 2020-06-01 , DOI: 10.1016/j.compscitech.2020.108127
Xiaoping Wang , Dong Liang , Bingkun Cheng

Abstract A novel intrinsic self-healing elastomer based on the combination of ionic and hydrogen bond had been prepared. Amide oligomers with certain elasticity was initially prepared as a result of hydrogen bonding, and thereafter zinc-carboxylate interactions were introduced in the oligomers to enhance the linking network by hard ionic regions and aggregates, resulting in growing rigidity and mechanical strength for the material. The structure of elastomer was characterized by FTIR and DSC. Self-healing mechanism was studied through the tensile experiment. The mechanical testing results showed that after healing for 4h without any external stimuli, the tensile modulus of this elastomer reached 13.5 MPa, which was the same as the original. Furthermore, after healing for 24h, the tensile strength and elongation at break of the material recovered at 82% and 96% respectively.

中文翻译:

基于氢离子键的本征自修复弹性体的制备与研究

摘要 制备了一种基于离子键和氢键结合的新型本征自修复弹性体。最初通过氢键制备了具有一定弹性的酰胺低聚物,然后在低聚物中引入了锌-羧酸盐相互作用,以增强硬离子区域和聚集体的连接网络,从而提高材料的刚度和机械强度。弹性体的结构通过FTIR和DSC表征。通过拉伸实验研究了自愈机制。力学测试结果表明,在没有任何外部刺激的情况下愈合4h后,该弹性体的拉伸模量达到13.5 MPa,与原来的相同。此外,在愈合 24 小时后,
更新日期:2020-06-01
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