紫外固化环氧树脂复合材料及其修补性能研究

为了推进紫外固化技术在树脂基复合材料的制备及结构修补中的应用,制备了紫外固化环氧树脂基复合材料并进行力学性能测试和微观组织分析。在此基础上,采用紫外固化复合材料对含人工缺陷的层合板试样进行了修补。结果表明,与热固化复合材料相比,采用紫外固化技术制备的复合材料具有良好的综合力学性能,复合材料中树脂基体与纤维之间结合良好;紫外固化复合材料制成的修补贴片对缺陷试样的修补效果显著,修补后试样的拉伸强度可以达到标准试样的84.1%,是缺陷试样的1.21倍。实验证明采用紫外固化复合材料修补贴片对缺陷进行修补是一种快速、有效的修补方法。

Mechanical Properties and Repairing Performance of UV-curing Epoxy Composite

In order to promote the application of UV-curing technology, the mechanical properties and the microstructure of the UV-curing epoxy composite are studied. On this basis, the UV-curing epoxy composite is used to repair the pre-damaged laminated beams for studying its repairing performance. The results reveal that, the mechanical properties of the UV-curing epoxy composite are favorable, compared with the thermal curing composite, and the bonding between resin matrix and fiber is good. The UV-curing epoxy composite patches significantly increase the tensile strength of the damaged laminated beams, and the strength of the repaired samples can reach 84.1% of the standard samples and is 1.21 times the strength of the unrepaired samples. Fiber reinforced UV-curing resin is a fast and effective method for repairing damaged composite laminates