自修复高分子材料近五年的研究进展

Research Progress of Self-healing Polymer Materials in Recent Five Years

自修复材料的概念源于对生物体自愈合现象的仿生研究,该类材料在受到损伤时可进行自修复并恢复一定程度的力学等性能。对高分子材料而言,其受机械力损伤后一般发生大分子链均裂或异裂而使材料产生微裂纹,此类微裂纹很难探测,而微裂纹的产生往往会引起高分子材料失效,因此快速修复微裂纹对诸多工程领域的高分子材料来讲尤为重要。本文从外源型及本征型自修复高分子材料两个方面,综述了近五年自修复高分子材料的研究进展,并对其今后发展进行了展望。

The study of self-healing materials was inspired by the self-cured biological systems, which can repair themselves and maintain their mechanical properties at certain degree after being wounded. For the polymeric materials, homolytic or heterolytic bond cleavage happen in macromolecular chains when damages occurred, leading to microcracks which is hard to detect. The appearance of microcracks will generally result in the failure of the polymeric materials. Thus, quickly healing the microcracks are important for the application of polymeric materials in various engineering fields.. In this review, we summarized the progresses of extrinsic and the intrinsic self-healing polymeric materials in recent 5 years, and the future development is prospected.