Study on laser treatment of quartz fiber/cyanate ester resin composite bonding surfaces

doi:10.19936/j.cnki.2096-8000.20220428.013

Abstract

Abstract: Adhesive bonding is one of the main methods of connecting composite structures, and the surface treatment has a significant impact on the bonding performance. In this paper, ultraviolet laser is used to treat the bonding surface of cyanate ester resin-based composites, and the influence of laser parameters on surface morphology and bonding performance is studied. The numerical simulation results show that the laser heat-affected zone is small, and according to the temperature of fiber and resin and their respective vaporization temperatures, it can be seen that laser treatment is mainly surface resin ablation. Through the observation of the surface state after the treatment, it is found that when laser ablates the cyanate ester resin, carbon black is formed due to the incomplete decomposition of the resin. The results of the single lap tensile shear test show that laser treatment with appropriate laser parameters can increase the bonding strength, and the dispersion is relatively small. But laser treatment with inappropriate laser parameters will reduce the bonding strength. The maximum shear strength after laser treatment is 22.575 MPa, which is 27.1% higher than that of the untreated group. And the dispersion coefficient is 2.7%.

Key words: quartz fiber/cyanate resin, laser surface treatment, carbon black, numerical simulation, single lap adhesive bonding

CLC Number:

TB332

XIONG Hua-kun, YUAN Guo-qing, YANG Jia-yong, QIU Xue-shi. Study on laser treatment of quartz fiber/cyanate ester resin composite bonding surfaces[J]. COMPOSITES SCIENCE AND ENGINEERING, 2022, 0(4): 81-86.

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