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首页> 外文期刊>Journal of Applied Polymer Science >Self-healing and interfacially toughened carbon fibre-epoxy composites based on electrospun core-shell nanofibres
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Self-healing and interfacially toughened carbon fibre-epoxy composites based on electrospun core-shell nanofibres

机译：基于Electrome核心壳纳米纤维的自愈和界面增韧碳纤维环氧复合材料

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摘要

Dual components of a self-healing epoxy system comprising a low viscosity epoxy resin, along with its amine based curing agent, were separately encapsulated in a polyacrylonitrile shell via coaxial electrospinning. These nanofiber layers were then incorporated between sheets of carbon fiber fabric during the wet layup process followed by vacuum-assisted resin transfer molding to fabricate self-healing carbon fiber composites. Mechanical analysis of the nanofiber toughened composites demonstrated an 11% improvement in tensile strength, 19% increase in short beam shear strength, 14% greater flexural strength, and a 4% gain in impact energy absorption compared to the control composite without nanofibers. Three point bending tests affirmed the spontaneous, room temperature healing characteristics of the nanofiber containing composites, with a 96% recovery in flexural strength observed 24 h after the initial bending fracture, and a 102% recovery recorded 24 h after the successive bending fracture. (C) 2017 Wiley Periodicals, Inc.
机译：通过同轴电纺丝将包含低粘度环氧树脂的自愈环氧树脂和其胺基固化剂以及其胺基固化剂的双重组分及其胺基固化剂分别包封。然后将这些纳米纤维层掺入湿式叠层过程中的碳纤维织物之间，然后是真空辅助树脂转移模塑以制造自愈合碳纤维复合材料。纳米纤维增韧复合材料的力学分析表明，拉伸强度的提高11％，短束剪力强度增加了19％，弯曲强度较大的14％，与没有纳米纤维的对照复合材料相比，冲击能量吸收的4％增益。三点弯曲试验肯定了纳米纤维复合材料的自发，室温愈合特性，在初始弯曲骨折后24小时观察到弯曲强度96％，在连续弯曲断裂后24小时记录102％的恢复。 （c）2017 Wiley期刊，Inc。

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