| 高模量碳纤维增强树脂基复合材料的皮秒激光加工阈值特性 |
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| 引用本文： | 路明雨,张明,张开虎,张加波,卫宇璇,高永亮.高模量碳纤维增强树脂基复合材料的皮秒激光加工阈值特性[J].复合材料学报,2021,38(11):3601-3609. |
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| 作者姓名： | 路明雨 张明 张开虎 张加波 卫宇璇 高永亮 |
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| 作者单位： | 北京卫星制造厂有限公司,北京 100094 |
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| 基金项目： | 国家自然科学基金项目(51905531)；装备预先研究项目(61409230314) |
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| 摘 要： | 对聚丙烯腈基高模量碳纤维/改性氰酸酯树脂复合材料(M55/BS-4)和一种沥青基高导热碳纤维/树脂基复合材料(K600/5418)的皮秒激光加工阈值和形貌特性进行了研究。通过面积外延法测定并比较了这两种碳纤维复合材料的近红外皮秒激光加工阈值及其阈值孵化效应，并预测了两种复合材料的单脉冲阈值；分析了入射能量通量(0.7~25 J/cm2)及光束扫描速度(0.2~5 m/s)对切口质量的影响规律。结果表明，碳纤维热导率的巨大差异导致不同碳纤维复合材料的加工阈值及形貌存在明显定量差距。使用可获得的最高扫描速度(5 m/s)和3.2倍(~8 J/cm2)单脉冲阈值的加工参数，可使材料的碳纤维和树脂几乎协同去除，加工形貌上表现为切缝入口宽度均匀、切割边缘整齐。使用更高扫描速度并配以合适的加工能量有望进一步提高加工质量。
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| 关 键 词： | 高模量 碳纤维 树脂基体 皮秒激光 烧蚀阈值 孵化效应 |
| 收稿时间： | 2020-12-07 |
Threshold properties of high modulus carbon fiber reinforced plastic composite with picosecond laser processing |
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| Affiliation: | Beijing Spacecraft, Beijing 100094, China |
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| Abstract: | The picosecond laser processing thresholds and morphology characteristics of polyacrylonitrile-based high modulus carbon fiber reinforced cyanate ester composite (M55/BS-4) and an asphalt-based high thermal conductivity carbon fiber reinforced plastic (K600/5418) were studied. Diameter-regression method was used to test and compare the ablation threshold, threshold incubation effect, and single-pulse thresholds for each composite were predicted. The influence of incident energy fluence (0.7-25 J/cm2) and beam scanning velocity (0.2-5 m/s) on the incision quality was analyzed. The results show that the great difference in the fiber thermal conductivity leads to significant quantitative difference in processing threshold and morphology. Using the highest scanning speed (5 m/s) available and fluence equivalent to 3.2 times the single-pulse threshold (i.e., about 8 J/cm2), carbon fiber and resin can be almost synergically removed, characterized by uniform slit inlet widths and neat cutting edge. The use of higher scanning speeds coupled with appropriate processing energy is expected to further improve the quality of processing. |
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