Development of robust self-healable heterogeneous crosslinked films

近年来，自修复热固性材料的发展已经引起了学术界和工业界的极大关注。由于内置的物理损坏后恢复其材料特性的能力，这些ethermosets可以抵御灾难性故障，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塑料的可回收性，从而节约化石燃料。然而，大多数可自我修复的网络都被设计得相当柔软，因为它具有快速填充空隙的能力，可以填充损坏的部分。与Multibond公司的一个部门Dural合作，这项拟议的研究旨在开发强大的交联网络，展示增强的机械性能，同时保持有效的自愈性。与传统的物理共混相比，我们的有效方法是通过一种新的嵌段共聚物技术将非有机纳米颗粒（直径< 10 nm）共价结合到自愈基质中。因此，纳米颗粒将均匀和共价分布在交联热固性材料中。我们的方法可以为自愈网络的发展提供多功能性，不仅具有有效的自愈性和高机械性能，而且具有传统热固性的尺寸和热稳定性以及耐溶剂性。

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.