Laser damage mechanism of flake graphite modified phenolic resin coating
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摘要: 为了分析高能激光对鳞片石墨改性酚醛树脂涂层的损伤机理，本文采用激光辐照方法研究激光对该涂层的损伤过程。首先，制备出纯酚醛树脂涂层和鳞片石墨改性酚醛树脂涂层，使用不同的激光参数进行激光辐照实验，根据损伤区域形貌和损伤面积分析鳞片石墨的对涂层的改性作用，分析损伤区域微观形貌和内部残炭的石墨化程度，通过对损伤中心进行三维成像来分析烧蚀凹坑的尺寸与烧蚀深度。最后，根据不同颜基比涂层在激光辐照过程中损伤区域的面积和显微形貌，分析了颜基比对激光损伤涂层过程的影响。分析结果表明：酚醛树脂经激光辐照后会裂解生成石墨化程度不同的残炭，经鳞片石墨添加改性后，损伤区域的面积相比于纯酚醛树脂涂层最大可增加35 mm2。由此可知鳞片石墨的添加改性增强了涂层的横向散热能力，但过高的颜基比会使具有粘附作用的残炭生成量减少，进而导致鳞片石墨脱落明显，涂层损伤严重。Abstract: In order to analyze the laser damage mechanism of flake graphite modified phenolic resin coating, we use laser irradiation method to study the process of irradiation. First, we prepare phenolic resin coatings and flake graphite modified phenolic resin coatings and irradiate these coatings with different laser parameters. According to the morphologies and area of the damage areas, we get the information about the modification effect of flake graphite. After that, the degree of graphitization and the micro-morphologies of the residual char are tested to analyze the structure of damage area. Besides, ablation depth and ablation area are measured through the three-dimensional micro shape. Finally, we analyze the effect of binder ratios by comparing the micro-morphologies and area of different coatings' damage areas. Experimental results indicate that phenolic resin will decompose into residual char with different degrees of graphitization when it is irradiated by laser. With the modification of flake graphite, the damage area of the coating increases by 35 mm2. Thus, flake graphite improves the horizontal heat dissipation ability of the coating. However, a large binder ratio will reduce the residual char, which plays a part in sticking flake graphite on the coating. The coating will be damaged seriously because of the loss of flake graphite.
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Key words:
- high power laser /
- damage mechanism /
- flake graphite /
- binder ratio
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图 3 损伤区域表面形貌及其三维显微图像
Figure 3. Surface morphologies and three-dimensional micro shape of the damage area
图 4 损伤区表面形貌和残炭的显微激光拉曼光谱
Figure 4. Surface morphologies of damage area and micro-confocal laser Raman spectrum of the residual char
图 6 不同颜基比涂层的损伤区域SEM形貌
Figure 6. SEM morphologies of the coatings with different binder ratios
表 1 不同颜基比涂层损伤面积对比
Table 1. Area comparison of damage areas with different binder ratios
功率密度/(W·cm-1) 辐照时间/s 酚醛树脂涂层损伤面积/mm2 颜基比1:2涂层损伤面积/mm2 颜基比4:5涂层损伤面积/mm2 500 10 225 256 256 1 000 10 256 289 289 1 500 10 289 324 324 
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[1] 潘其坤.中红外固体激光器研究进展[J].中国光学, 2015(4):557-566. http://www.chineseoptics.net.cn/CN/abstract/abstract9321.shtmlPAN Q K. Progress of mid-infrared solid-state laser[J]. Chinese Optics, 2015(4):557-566.(in Chinese) http://www.chineseoptics.net.cn/CN/abstract/abstract9321.shtml [2] 王立军, 宁永强, 秦莉, 等.大功率半导体激光器研究进展[J].发光学报, 2015, 36(1):1-19. http://www.cnki.com.cn/Article/CJFDTOTAL-FGXB201501002.htmWANG L J, NING Y Q, QIN L, et al.. Development of high power diode laser[J]. Chinese J. Luminescence, 2015, 36(1):1-19.(in Chinese) http://www.cnki.com.cn/Article/CJFDTOTAL-FGXB201501002.htm [3] 李思忠. 强激光热辐射条件下复合材料结构的破坏[C]. 激光的热和力学效应学术会议论文集, 北京, 1993: 100-109.LI S ZH. Structural damage of composites under high power laser irradiation[C]. Proceedings of the Academic Conference on the Thermal and Mechanical Effects of Laser, 1993:100-109.(in Chinese) [4] 彭国良, 张相华, 高银军, 等.激光辐照玻璃纤维/环氧树脂复合材料的力学剥蚀研究[J].中国激光, 2015, 8(1):205-211. http://www.cnki.com.cn/Article/CJFDTOTAL-JJZZ201501028.htmPENG G L, ZHANG X H, GAO Y J, et al.. Research to mechanics erosion effect of laser irradiating glass/epoxy composites[J]. Chinese J. Lasers, 2015, 8(1):205-211.(in Chinese) http://www.cnki.com.cn/Article/CJFDTOTAL-JJZZ201501028.htm [5] 张家雷, 王伟平, 刘仓理.激光辐照下复合材料热响应的轴对称数值分析[J].强激光与粒子束, 2014, 26(9):132-136. http://www.cnki.com.cn/Article/CJFDTOTAL-QJGY201409026.htmZHANG J L, WANG W P, LIU C L. Axisymmetric numerical study on thermal response of composites of laser irradiation[J]. High Power Laser and Particle Beams, 2014, 26(9):132-136.(in Chinese) http://www.cnki.com.cn/Article/CJFDTOTAL-QJGY201409026.htm [6] SAGAR S. Comprehensive ablation characteristics of ceramic fibers impregnated rubber composites[J]. Polymer Engineering & Science, 2014, 6:162-167.. https://www.researchgate.net/publication/272793034_Comprehensive_Ablation_Characteristics_of_Ceramic_Fibers_Impregnated_Rubber_Composites [7] DING J, HUANG Z, QIN Y, et al.. Improved ablation resistance of carbon phenolic composites by introducing zirconium silicide particles[J]. Composites Part B Engineering, 2015, 82:100-107. doi: 10.1016/j.compositesb.2015.08.023 [8] BIAN L, XIAO J, ZENG J, et al.. Microstructural interpretation of the ablative properties of phenolic quartz hybrid fabric reinforced phenolic resin composites[J]. Materials & Design, 2014, 62(10):424-429. https://www.researchgate.net/publication/275299328_Microstructural_interpretation_of_the_ablative_properties_of_phenolic-quartz_hybrid_fabric_reinforced_phenolic_resin_composites [9] 穆景阳. Cf/E复合材料的重频激光烧蚀机理及加固涂层研究[D]. 湖南: 国防科学技术大学, 2007.MU J Y. Studies on the ablative mechanism of Cf/E irradiated by Re-frequency laser and anti-laser coatings[D]. Hunan:National University of Defense Technology, 2007.(in Chinese) [10] HIROGAKI T, AOYAMA E, INOUE H, et al.. Laser drilling of blind via holes in aramid and glass/epoxy composites for multi-layer printed wiring boards[J]. Composites:Part A, 2001, 32:963-968. doi: 10.1016/S1359-835X(00)00152-4 [11] 万红, 胡凯为, 穆景阳, 等.树脂基复合材料在连续激光作用下的损伤[J].强激光与粒子束, 2008, 20(1):6-10. http://www.cnki.com.cn/Article/CJFDTOTAL-QJGY200801002.htmWAN H, HU K W, MU J Y, et al. Damage analysis of fiber reinforced resin matrix composites irradiated by CW laser[J]. High Power Laser and Particle Beams, 2008, 20(1):6-10.(in Chinese) http://www.cnki.com.cn/Article/CJFDTOTAL-QJGY200801002.htm [12] 张永强, 王贵兵, 唐小松, 等.两种纤维增强复合材料连续激光烧蚀阈值测量及吸收特性分析[J].强激光与粒子束, 2009, 21(2):199-202. http://www.cnki.com.cn/Article/CJFDTOTAL-QJGY200902008.htmZHANG Y Q, WANG G B, TANG X S, et al.. Ablation threshold measurement and absorption characteristic analysis of two fiber reinforced composites irradiated by CW laser[J]. High Power Laser and Particle Beams, 2009, 21(2):199-202.(in Chinese) http://www.cnki.com.cn/Article/CJFDTOTAL-QJGY200902008.htm [13] LI J, GUAN Z W, ZHANG Y Z, et al. Laser ablation resistance behavior of organosilicone composite coating on various substrates[J]. Materials Science Forum, 2014, 789(789):461-465. https://www.researchgate.net/publication/269357656_Laser_Ablation_Resistance_Behavior_of_Organosilicone_Composite_Coating_on_Various_Substrates [14] 陈博, 万红, 白书欣.石墨改性环氧树脂抗强激光辐照性能[J].强激光与粒子束, 2011, 23(10):2617-2620. doi: 10.3788/HPLPBCHEN B, WAN H, BAI SH X, et al.. Laser resistance capability of graphite modified epoxy resin[J]. High Power Laser and Particle Beams, 2011, 23(10):2617-2620.(in Chinese) doi: 10.3788/HPLPB [15] 于庆春, 万红.片状石墨增强树脂基复合材料的耐激光烧蚀性能研究[J].无机材料学报, 2012, 27(2):157-161. doi: 10.3724/SP.J.1077.2012.00157YU Q CH, WAN H. Ablation capability of flake graphite reinforced barium-phenolic resin composite under long pulse laser irradiation[J]. J. Inorganic Materials, 2012, 27(2):157-161.(in Chinese) doi: 10.3724/SP.J.1077.2012.00157 [16] 周德凤, 谢海明, 赵艳玲, 等.酚醛树脂热解炭材料的石墨化程度及其电化学性能[J].功能材料, 2005, 36(1):83-85. http://www.cnki.com.cn/Article/CJFDTOTAL-GNCL20050100O.htmZHOU D F, XIE H M, ZHAO Y L, et al.. Graphitizing degree and electrochemical properties of carbonaceous material by phenolic resin pyrolyzing[J]. Functional Materials, 2005, 36(1):83-85.(in Chinese) http://www.cnki.com.cn/Article/CJFDTOTAL-GNCL20050100O.htm -
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