Accelerated Self-Healing Via Ternary Interpenetrating Microvascular Networks
Accelerated Self-Healing Via Ternary Interpenetrating Microvascular Networks
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DOI：
10.1002/adfm.201101553
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发表时间：
2011-11-22
影响因子：
19
通讯作者：
Lewis, Jennifer A.
中科院分区：
文献类型：
--
作者：
Hansen, Christopher J.;White, Scott R.;Lewis, Jennifer A.
具有双重互穿微血管网络的自愈合材料能够实现两部分愈合化学作用和局部区域损伤的重复愈合。1然而，由于愈合动力学缓慢，在环境条件下，损伤事件之间需要数天才能恢复机械性能。通过在这些环氧涂层/基底结构内直接写入第三交叉微血管网络以实现原位热调节，特征愈合时间减少了一个数量级。具体地，该第三网络提供用于循环温度受控流体的导管，该温度受控流体快速加热局部受损区域，导致机械性能恢复所需的时间急剧减少。
Self-healing materials with dual interpenetrating microvascular networks enable two-part healing chemistries and repeated healing of damage in a localized region.1 However, due to slow healing kinetics, multiple days are required between damage events to recover mechanical performance under ambient conditions. By directly writing a third interdigitated microvascular network within these epoxy coating/substrate architectures to enable in situ thermal regulation, the characteristic healing time is reduced by an order of magnitude. Specifically, this third network provides a conduit for circulating a temperature-controlled fluid that rapidly heats the locally damaged region leading to a sharp reduction in the time required for mechanical property restoration.