Laser resistance capability of graphite modified epoxy resin

被引：1
|
作者：
Chen B. [1 ,2 ]
Wan H. [1 ]
Bai S. [1 ]
机构：
[1] College of Aerospace and Materials Engineering, National University of Defense Technology
[2] Research Institute of Chemical Defense
来源：
Qiangjiguang Yu Lizishu/High Power Laser and Particle Beams | 2011年 / 23卷 / 10期
关键词：
Damage form; Energy coupling; Epoxy resin; Graphite; Laser irradiation; Morphology analysis;
D O I：
10.3788/HPLPB20112310.2617
中图分类号：
学科分类号：
摘要：
Graphitemodified epoxy resin was prepared, the mechanisms of energy coupling between the modified epoxy resin and laser were discussed, and the laser resistance capability of the resin was studied. Damage morphologies of the resin irradiated by laser of different parameters were analyzed, and the ablation threshold and damage forms were confirmed. The results indicate that irradiated by continuous wave laser, the resin has a ablation threshold higher than 2 kW/cm2. The energy coupling coefficient is only about 10%, the thermal-ablation rate is as low as several μg/J, and the longitudinal adiabatic capability is excellent, with the thermal conductance lower than 10 W·K-1·m-1. At lower power density, the ablation of the resin is caused by slight oxidation, while it is caused by vaporization at higher power density. Besides, the modified resin has some other advantages, such as simple preparation, low cost and excellent interfacial adhesion.
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页码：2617 / 2620
页数：3
相关论文
共 7 条
  • [1] Sun C., Lu Q., Laser Irradiation Effects, pp. 2-5, (2001)
  • [2] Science and technology of directed energy weapons, Rev Mod Phys, 59, 3, (1987)
  • [3] Wen J., Laser Weapons, (2000)
  • [4] Lu J., Ni X., He A., Laser and Material Interaction Physics, (1996)
  • [5] Guo Y., Liang G., Qiu Z., Et al., Damage and protection progress of materials irradiated by laser beam, Journal of Materials Protection, 36, 12, (2003)
  • [6] Mu J., Wan H., Bai S., A thermal-ablated law study of cured epoxy under long pulse laser irradiations, High Power Laser and Particle Beams, 20, 1, pp. 36-40, (2008)
  • [7] Chen B., Wan H., Mu J., Et al., Ablative mechanism of carbon-fiber/epoxy composite irradiated by repetition frequency laser, High Power Laser and Particle Beams, 20, 4, pp. 547-552, (2008)
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