• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >Repeated self-healing of nano and micro scale cracks in epoxy based composites by tri-axial electrospun fibers including different healing agents
【24h】

Repeated self-healing of nano and micro scale cracks in epoxy based composites by tri-axial electrospun fibers including different healing agents

机译：通过三轴电纺纤维（包括不同的修复剂），可在环氧树脂基复合材料中反复自我修复纳米和微米级裂纹

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Multi-walled healing fibers with a novel architecture are fabricated through a direct, one-step tri-axial electrospinning process to encapsulate different healing agents inside the fibers with two distinct protective walls. Self healing systems based on ring opening metathesis polymerization (ROMP) and an amine-epoxy reaction are redesigned by utilizing these tri-axial fibers. In ROMP, Grubbs' catalysts are integrated in the outer wall of the fibers instead of the composite matrix to reduce the catalyst amount and prevent its deactivation during composite production. In the amine-epoxy healing system, epoxy resin and an amine-based curing agent are encapsulated separately by a multi-axial electrospinning. The presence of an extra layer facilitates the encapsulation of amine based healing agents with a highly active nature and extends the efficiency and life-time of the healing functionality. These new self-healing designs provide repeated self healing ability to preserve the mechanical properties of the composite by repairing micro and nano scale cracks under high loadings.
机译：具有新颖结构的多壁愈合纤维是通过直接的一步式三轴电纺丝工艺制造的，以将具有不同保护层的不同愈合剂包裹在纤维内。利用这些三轴纤维重新设计了基于开环复分解聚合（ROMP）和胺-环氧反应的自愈系统。在ROMP中，格鲁布斯的催化剂集成在纤维的外壁而不是复合材料基质中，以减少催化剂用量并防止其在复合材料生产过程中失活。在胺-环氧树脂愈合体系中，环氧树脂和基于胺的固化剂通过多轴电纺丝分别包封。额外层的存在促进了具有高度活性的胺基愈合剂的封装，并延长了愈合功能的效率和寿命。这些新的自我修复设计提供了反复的自我修复能力，可通过在高载荷下修复微米和纳米级裂纹来保持复合材料的机械性能。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号