飞秒激光对玻璃钢表面的烧蚀特性试验研究  

Experimental study on ablation characteristics of surface of glass fiber reinforced polymer by femtosecond laser

作　　者：何宗泰 刘可欣 刘鸣 刘顿[1] 杨奇彪[1] HE Zongtai;LIU Kexin;LIU Ming;LIU Dun;YANG Qibiao(School of Mechanical Engineering,Hubei University of Technology,Wuhan 430068,China)

机构地区：[1]湖北工业大学机械工程学院,武汉430068

出　　处：《复合材料科学与工程》2023年第1期112-115,136,共5页Composites Science and Engineering

摘　　要：玻璃钢因其优良的透波性和介电性能而被广泛应用于雷达设备的容器或外壳的制造。为了对玻璃钢表面进行精密加工,采用波长为1 030 nm的飞秒脉冲激光对玻璃钢表面进行刻蚀,研究了不同激光能量密度、扫描速度以及刻蚀次数对玻璃纤维增强树脂基复合材料表面的烧蚀效果。研究发现飞秒激光对玻璃钢的烧蚀状态可分为弱烧蚀与强烧蚀,且强烧蚀状态可在弱烧蚀的基础上演变形成。弱烧蚀状态时,激光对材料的去除机制主要为热解汽化,热影响较小,加工后的表面能够维持部分原始组织结构与化学性质。当激光能量密度、光斑重叠率或扫描次数增加后,材料表面的热累积效应增强,加剧了材料的消融率,形成强烧蚀状态,烧蚀后材料表面组织结构与化学性质发生改变,碳化现象显著。Glass fiber reinforced polymer is widely used in the manufacture of container or outer skin of radar equipment because of its excellent wave permeability and dielectric properties. In order to etch the surface of glass fiber reinforced polymer precisely, it was etched by femtosecond pulse laser with wavelength of 1 030 nm, and the ablation effect of different laser energy density, scanning speed and etching times were considered. It was found that the ablation state of femtosecond laser can be divided into weak ablation and strong ablation, and the strong ablation state can be formed on the basis of weak ablation. In the weak ablation state, the removal mechanism of laser on the material is mainly vaporization with less thermal effect, and parts of the original structure and chemical properties can be maintained on the processed surface. When the laser energy density, spot overlap rate or scanning times increased, the heat accumulation effect on the surface was enhanced, the ablation rate of the material was intensified, and the ablation state was changed. After ablation, the microstructure and chemical properties of the material surface changed, and the carbonization phenomenon was significant.

关 键 词：飞秒激光 玻璃钢 材料烧蚀 

分 类 号：TB332[一般工业技术—材料科学与工程]