风冷和导热板对CF/PPS复合材料自感应焊接的影响

复合材料科学与工程 ›› 2020, Vol. 0 ›› Issue (10): 39-46.

风冷和导热板对CF/PPS复合材料自感应焊接的影响

钱盈^1,2,3, 王家锋^1,2, 宋俣诺^1,2, 朱姝^1,2

1.东华大学纤维材料改性国家重点实验室民用航空复合材料东华大学协同创新中心,上海201620;
2.东华大学上海市轻质结构复合材料重点实验室材料科学与工程学院,上海201620;
3.上海飞机制造有限公司,上海200436

收稿日期:2020-02-11 出版日期:2020-10-28 发布日期:2020-10-28
通讯作者: 周剑锋(1978-),男,博士,高级实验师,主要从事航空热塑性复合材料方面的研究,zjf@dhu.edu.cn。
作者简介:钱盈(1994-),女,硕士,主要从事航空热塑性复合材料方面的研究。本文作者还有周剑锋^1,2,杨洋³,王洪恩³,曹华军⁴。(4.重庆大学机械传动国家重点实验室,重庆400030)
基金资助:
国家自然科学基金青年科学基金项目(21404023);中国商飞创新基金(60202);纤维材料改性国家重点实验室资助课题(KF2013);上海市大学生创新创业训练资助项目(281-03-0178019)

INFLUENCES OF AIR NOZZLE AND HEAT-CONDUCTING PLATE ON THE INDUCTION WELDING OF CF/PPS COMPOSITE

QIAN Ying^1,2,3, WANG Jia-feng^1,2,SONG Yu-nuo^1,2, ZHU Shu^1,2

1. State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Center for Civil Aviation Composites, Donghua University, Shanghai 201620, China;
2. Key Laboratory of Shanghai City for Lightweight Composites, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China;
3. Shanghai Aircraft Manufacturing Company, Shanghai 200436, China

Received:2020-02-11 Online:2020-10-28 Published:2020-10-28

摘要/Abstract

摘要： 随着热塑性复合材料在飞机上的用量日趋增多,感应焊接作为未来热塑性结构件连接技术的最重要发展方向而倍受重视。感应焊接技术目前存在的主要问题在于焊接过程中最高温度面难以锁定于焊接面,而常位于更靠近线圈的表面附近。本文针对连续碳纤维增强聚苯硫醚(CF/PPS)层合板,研究了空气喷嘴和陶瓷导热板对于CF/PPS复合材料感应焊接过程的影响规律。结果表明,空气喷嘴和导热板的使用均可以有效地降低焊接过程中层合板上表面的温度,避免靠近线圈的上表面树脂在焊接过程中发生高温熔融或降解,从而保证CF/PPS自感应接头的外观完整性。此外,本文研究了单向预浸料制备的CF/PPS层合板进行自感应焊接的可行性。结果表明,由0°和90°交替铺层的CF/PPS层合板由于内部存在交流导电回路,可在低频高功率条件下实现自感应焊接。

关键词: 感应焊接, 碳纤维, 聚苯硫醚, 热塑性复合材料, 单搭接剪切强度

Abstract: With the increasing use of thermoplastic composite materials in aircraft, induction welding has attracted more and more attention as the most important developing direction for the connection technologies of the future thermoplastic structure. At present, the main problem of induction welding technology is that the highest temperature surface is hard to be confined to the weld line, and it is often located near the surface closer to the coil. In this paper, the influences of air nozzle and ceramic heat-conducting plate on the induction welding process of carbon fiber reinforced polyphenylene sulfide (CF/PPS) composite was studied. The results show that the use of air nozzle and heat-conducting plate could effectively reduce the temperature of the upper surface of the laminated plate during the welding process, minimize the high temperature melting or degradation of the resin near the coil, and guarantee the shape integrity of CF/PPS welding joint. In addition, the feasibility of induction welding of CF/PPS laminates made of unidirectional prepreg was studied. The results show that the CF/PPS laminates with alternating layers of 0° and 90° can be induction welded at low frequencies and high power due to the existence of alternating current circuits inside.

Key words: induction welding, carbon fiber, polyphenylene sulfide, thermoplastic composites, lap shear strength

中图分类号:

TB332

钱盈, 王家锋, 宋俣诺, 朱姝. 风冷和导热板对CF/PPS复合材料自感应焊接的影响[J]. 复合材料科学与工程, 2020, 0(10): 39-46.

QIAN Ying, WANG Jia-feng,SONG Yu-nuo, ZHU Shu. INFLUENCES OF AIR NOZZLE AND HEAT-CONDUCTING PLATE ON THE INDUCTION WELDING OF CF/PPS COMPOSITE[J]. Composites Science and Engineering, 2020, 0(10): 39-46.

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