复合材料表面涂层多级微脉管修复剂输送系统研究  

Multi-diameter Microvascular Healing Agent Delivery System For Composite Material Surface Coating

作　　者：申儒林[1,2] 龙明俊 任美建 龚艳玲 SHEN Rulin;LONG Mingjun;REN Meijian;GONG Yanling(School of Mechanical and Electrical Engineering,Central South University,Changsha 410083;State key Laboratory of High-performance Complex Manufacturing,Changsha 410083)

机构地区：[1]中南大学机电工程学院,长沙410083 [2]高性能复杂制造重点实验室,长沙410083

出　　处：《宇航材料工艺》2020年第6期69-75,共7页Aerospace Materials & Technology

基　　金：高性能复杂制造国家重点实验室开放课题项目资助(Kfkt2016-01)。

摘　　要：为了实现复合材料表面涂层划痕的多点自修复,研究多级管径的修复剂输送系统。在涂层中分别布置了主管道、次级管道以及末端微纳/多孔结构,构成多级微脉管修复剂输送系统。研究发现三级微脉管输送系统输送修复剂的效果最好,修复剂扩散更为均匀,扩散速度更快;主级管道水平布置更为合理,管道不易堵塞,修复剂输送更流畅,而且将主级管道嵌入基体中,可以减少其对涂层性能的影响。对末级管道结构的进一步研究表明,导流网结构比多孔泡沫镍的输送效果更好。因此,使用将主管道水平嵌入基体,末端微纳结构使用导流网的三级微脉管系统有望应用于复合材料表面涂层划痕的自修复。Multi-diameter vascular system was studied to realize the multi-point self-healing of the scratch on the surface of composite material.The main pipeline,secondary pipeline and micro-nano porous structure were embedded in the superficial part of the coating to form the multi-diameter microvascular healing agent delivery system.The research indicated that three-diameter microvasculature system had the best effect of conveying repair agent,and the diffusion of repair agent was more uniform and faster.The horizontal layout of the main pipeline could prevent the pipeline from blocking,and the delivery of the repair agent was more smooth.The main pipeline was embedded in the substrate,which could reduce its impact on the coating performance.Further study on micro-nano porous structure showed that the diversion network was better than that of the porous nickel foam.Therefore,the three-diameter micropipette system,which was embedded the main pipe horizontally into the substrate and used the guide net structure micro-nano porous structure,was expected to be applied to the self-healing of the scratch on the surface of composite material.

关 键 词：涂层 自修复 多级微脉管 愈合剂 复合材料 

分 类 号：TB332[一般工业技术—材料科学与工程]