Development of robust self-healable heterogeneous crosslinked films

开发坚固的自修复异质交联薄膜

• 批准号: 522033-2017
• 负责人: Oh, JungKwon
• 金额: $ 1.82万
• 依托单位: Concordia University
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=639492
• 关键词: Development; robust; self; healable; heterogeneous

In recent years the development of self-healable thermosets has drawn significant efforts from both academiaand industry. Due to the built-in ability to recover their material properties after physical damage, thesethermosets can resist catastrophic failure thus extending their lifetime. Furthermore, self-healing technologycan improve the recyclability of conventional thermosets, thereby conserving fossil fuels. However, mostself-healable networks have been designed to be fairly soft because rapid void-filling ability to flow to fill thedamaged parts.In collaboration with Dural, a division of Multibond Inc, this proposed research aims to develop robustcrosslinked networks exhibiting enhanced mechnical properties, while retaining effective self-healability.Compared with conventional physical blending, our effective approach centers on covalent incorporation ofinorganic nanoparticles (diameter < 10 nm) into self-healable matrix through a novel block copolymertechnology. Consequently, the nanoparticles will be uniformly and covalently distributed in the crosslinkedthermosets. Our approach can offer versatility toward the development of self-healable networks exhibiting notonly effective self-healability and high mechanical property but also dimensional and thermal stability andsolvent resistance common to conventional thermosets.

近年来，自愈合热固性材料的发展引起了国内外学者和工业界的极大关注。由于在物理损坏后恢复其材料性能的内在能力，这些热固性材料可以抵抗灾难性故障，从而延长其使用寿命。此外，自我修复技术可以提高传统热固性材料的可回收性，从而节省化石燃料。然而，大多数自愈合网络被设计成相当柔软，因为快速的空隙填充能力可以流动以填充损坏的部分。与Multibond Inc.的一个部门Dural合作，这项拟议的研究旨在开发具有增强的机械性能的坚固交联网络，同时保持有效的自愈合能力。与传统的物理共混相比，我们的有效方法是通过一种新型的嵌段共聚物技术将无机纳米颗粒（直径<10 nm）共价结合到自修复基质中。因此，纳米颗粒将均匀地和共价地分布在交联热固性材料中。我们的方法可以为自愈合网络的发展提供多功能性，不仅表现出有效的自愈合性和高机械性能，而且还具有传统热固性材料的尺寸和热稳定性以及耐溶剂性。