期刊
NANOTECHNOLOGY
卷 31, 期 2, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1361-6528/ab4743
关键词
carbon fiber; self-healing polymer; hydrogen bond; amidation treatment
资金
- Heilongjiang Natural Science Foundation [QC2017038]
- Fundamental Research Funds for the Central Universities [2572018BC27]
- China Post-doctoral Science Foundation [2016M601402, 2017M610212]
- Heilongjiang Postdoctoral Fund [LBH-Z16004, LBH-Z16089]
- Heilongjiang Postdoctoral Special Fund [LBH-TZ1713]
Self-healing polymer materials (SHPM) have aroused great interests in recent years. Ideal SHPM should have not only simple operations, but also high elongations at break, tensile strain and self-healing properties at room temperature. Herein, the amidated carbon fibers (CFs) reinforced self-healing polymer composites were designed by hydrogen bonding interaction between functionalized CFs and hyperbranched polymers. The amidated CFs were prepared by transformation of hydroxyl to acylamino through a one-step amidation. By introducing amidated CFs, amidated CFs self-healing polymer composites (called AD-CF) exhibited many desirable characteristics compared to pure polymer composites, such as a better elasticity, lower healing temperatures, and higher self-healing efficiencies. The stress-strain test was selected to carefully study the self-healing property of the AD-CF. The observed same recovery condition, i.e. without any mechanical breakdown after the 10 sequential cycles of cutting and healing indicates no aging of the AD-CF. The ability of AD-CF to exhibit a soft state and rapid self-healing at room temperature makes it possible for much wider applications.
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