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浙江大学学报(工学版)
浙江大学学报(工学版)  2022, Vol. 56 Issue (11): 2119-2126    DOI: 10.3785/j.issn.1008-973X.2022.11.002
机械与能源工程     
碳纤维复合材料原位增材制造设备与工艺
洪林1(),栾丛丛1,2,*(),姚鑫骅1,董宁国1,纪毓杨1,牛成成1,丁泽泉1,宋学宇3,4,傅建中1,2
1. 浙江大学 机械工程学院，浙江省三维打印工艺与装备重点实验室，流体动力与机电系统国家重点实验室，浙江 杭州 310027
2. 浙江大学 工程训练中心，浙江 杭州 310058
3. 西北工业大学 航天学院，陕西 西安 710072
4. 中国航天科技集团公司四院 四十一所，陕西 西安 710025
In-situ additive manufacturing equipment and technology of carbon fiber composites
Lin HONG1(),Cong-cong LUAN1,2,*(),Xin-hua YAO1,Ning-guo DONG1,Yu-yang JI1,Cheng-cheng NIU1,Ze-quan DING1,Xue-yu SONG3,4,Jian-zhong FU1,2
1. School of Mechanical Engineering, Key Laboratory of 3D Printing Process and Equipment of Zhejiang Province, State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Hangzhou 310027, China
2. Engineering Training Center, Zhejiang University, Hangzhou 310058, China
3. College of Astronautics, Northwestern Polytechnical University, Xi’an 710072, China
4. The 41st Institute, The Fourth Academy of CASA, Xi’an 710025, China
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摘要：

为了实现碳纤维增强热塑性复合材料（CFRTC）高质高效原位增材制造，设计一种激光聚焦加热CFRTC原位增材制造平台，以单向连续碳纤维增强聚醚醚酮热塑性复合材料（T800 CF/PEEK UD）预浸带为原材料开展CFRTC成型工艺相关研究. 制备环形样件进行剪切强度测试表征，通过扫描电子显微镜观察样件的截面形貌，确立激光聚焦加热CF/PEEK的可行工艺参数窗口与较优工艺参数. 结果表明，CF/PEEK成型件强度受激光聚焦加热温度、成型速度影响较大，均表现出随激光聚焦加热温度与成型速度的增加，先增大后减小，当成型速度为30 mm/s和激光加热温度为450 ℃时，环形样件有较高的剪切强度，并且表现出较少的微观缺陷.
关键词： 激光聚焦加热;  碳纤维;  CF/PEEK;  热塑性复合材料;  原位增材制造    
Abstract:

A laser-assisted in-situ additive manufacturing platform for carbon fiber reinforced thermoplastic composites (CFRTC) was designed to achieve high quality and effcient in-situ additive manufacturing of CFRTC. The manufacturing process parameters were investigated by taking example of contimuaus carbon fiber reinforced thermoplastics T800 CF/PEEK UD prepreg strip. The several circle specimens were prepared to measure the shear strength and the cross-sectional morphology of the specimen was observed through a scanning electron microscope, which helped to determine the feasibility parameters range and optimal process parameters. The results showed that the strength of the manufactured CF/PEEK parts was greatly affected by the temperature and speed. The shear strength increased at first and then decreased with the increase of both the temperature and speed. The maximum of shear strength as well as the minimum micro-defect were achieved when the temperature was 450 ℃ and the speed was 30 mm/s.
Key words: laser focused heating    carbon fiber    CF/PEEK    thermoplastic composites    in-situ additive manufacturing
收稿日期: 2022-01-20 出版日期: 2022-12-02
CLC:  TH 16  
基金资助: 国家自然科学基金资助项目（52175440，51905478）；浙江省重点研发计划资助项目（2020C01069）
通讯作者: 栾丛丛     E-mail: 21925015@zju.edu.cn;lccshdg@zju.edu.cn
作者简介: 洪林（1996 —），男，硕士生，从事复合材料增材制造研究. orcid.org/0000-0002-7231-1364. E-mail： 21925015@zju.edu.cn
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洪林
栾丛丛
姚鑫骅
董宁国
纪毓杨
牛成成
丁泽泉
宋学宇
傅建中

引用本文:

洪林,栾丛丛,姚鑫骅,董宁国,纪毓杨,牛成成,丁泽泉,宋学宇,傅建中. 碳纤维复合材料原位增材制造设备与工艺[J]. 浙江大学学报(工学版), 2022, 56(11): 2119-2126.

Lin HONG,Cong-cong LUAN,Xin-hua YAO,Ning-guo DONG,Yu-yang JI,Cheng-cheng NIU,Ze-quan DING,Xue-yu SONG,Jian-zhong FU. In-situ additive manufacturing equipment and technology of carbon fiber composites. Journal of ZheJiang University (Engineering Science), 2022, 56(11): 2119-2126.

链接本文:

https://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2022.11.002    或    https://www.zjujournals.com/eng/CN/Y2022/V56/I11/2119

图 1  机器人辅助激光聚焦加热CFRTC原位增材制造平台
图 2  原位成型设备结构
图 3  激光光斑形状
参数 数值
树脂质量分数/% 34±3
单层厚度/mm 0.24±0.02
宽度/mm 6.35
树脂玻璃化转变温度/℃ 143
树脂熔融温度/℃ 343
表 1  CF/PEEK预浸带基础参数
图 4  不同激光温度照射CF/PEEK预浸带表面形貌
图 5  环形样件成型过程与成型样件
图 6  标准环形测试试样
图 7  聚合物基复合材料短梁剪切强度测试系统
图 8  成型速度30 mm/s、激光加热温度450 ℃时不同试样载荷-位移曲线
图 9  样件失效形式是弯曲断裂及分层破坏
图 10  激光加热温度-层间剪切强度综合曲线
图 11  成型速度-层间剪切强度综合曲线
图 12  激光加热温度与成型速度对剪切强度综合影响曲面
图 13  激光加热温度450 ℃不同成型速度环形试样截面微观形貌
图 14  成型速度30 mm/s、激光加热温度450 ℃时CF/PEEK原位成型制造样件
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