热塑性复合材料原位成型过程铺层间结合强度

doi:10.7527/S1000-6893.2018.22543

材料工程与机械制造

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热塑性复合材料原位成型过程铺层间结合强度

宋清华, 刘卫平, 刘小林, 刘奎, 杨洋, 陈吉平

上海飞机制造有限公司, 上海 201324

收稿日期:2018-07-13 修回日期:2019-08-06 出版日期:2019-04-15 发布日期:2018-09-25
通讯作者: 宋清华 E-mail:songqinghua@comac.cc
基金资助:
上海飞机制造有限公司创新基金（F-CXKT-0155）；上海市自然科学基金（17ZR14118001）

Interlaminar bonding strength for thermoplastic composite in an in-situ consolidation process

SONG Qinghua, LIU Weiping, LIU Xiaolin, LIU Kui, YANG Yang, CHEN Jiping

Shanghai Aircraft Manufacturing Co., Ltd., Shanghai 201324, China

Received:2018-07-13 Revised:2019-08-06 Online:2019-04-15 Published:2018-09-25
Supported by:
Creative Foundation of Shanghai Aircraft Manufacturing Co., Ltd (F-CXKT-0155); Natural Science Foundation of Shanghai (17ZR14118001)

摘要/Abstract

摘要： 连续纤维增强热塑性复合材料自动铺放原位成型可以实现结构件在制造过程中一次成型，而不需进入热压罐后处理，属于"非热压罐"制造技术，故原位成型过程中铺层间的结合强度将直接决定最终结构件的性能。通过建立铺层间紧密接触模型及高温高压下分子链扩散模型，预测原位成型过程中铺层间的结合强度与成型工艺参数之间的关系，对原位成型工艺参数进行优化，并通过试验验证模型的正确性。试验结果表明，模型预测结果与试验结果基本相符，通过计算发现，压辊压力达到1500 N时，铺层间的紧密接触度才能达到1；通过提高升温速率的方式缩短分子链的扩散时间；原位成型试片的层间剪切强度（ILSS）仅达到热压罐成型的70%左右，因此还需对原位成型试片性能的其他影响因素进行分析。

关键词: 热塑性复合材料, 原位成型, 紧密接触, 分子链扩散, 结合强度

Abstract: The Automated Fiber Placement (AFP) of the continuous fiber reinforced thermoplastic composite could realize the in-situ consolidation and the in-situ consolidated laminate without being reconsolidated by the autoclave, belonging to a non-autoclave technology. The strength of the laminate made by in-situ consolidation is directly determined by the interlaminard bonding strength. The interlaminar intimate contact model and the molecular chain diffusion model are presented for predicting the relation between the interlaminar bonding strength and processing parameters, optimizing the in-situ consolidated processing parameters. Experiments were carried out to validate these results computed by the interlaminar intimate contact model and the molecular chain diffusion model. The experimental results are similar to the predicted results. When the pressure of roller reaches 1500 N, the degree of the interlaminar intimate could reach 1. The diffusion time of the molecular chain could be shortened by increasing the heating rate. The InterLaminar Shear Strength (ILSS) of the in-situ consolidated laminate is only about 70% of that consolidated by autoclave; therefore, it is necessary to analyze the other factors that influence the strength of the in-situ consolidated laminate.

Key words: thermoplastic composite, in-situ consolidation, intimate contact, molecular chain diffusion, bonding strength

中图分类号:

宋清华, 刘卫平, 刘小林, 刘奎, 杨洋, 陈吉平. 热塑性复合材料原位成型过程铺层间结合强度[J]. 航空学报, 2019, 40(4): 422543-422543.

SONG Qinghua, LIU Weiping, LIU Xiaolin, LIU Kui, YANG Yang, CHEN Jiping. Interlaminar bonding strength for thermoplastic composite in an in-situ consolidation process[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2019, 40(4): 422543-422543.

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E-mail：hkxb@buaa.edu.cn

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主管单位：中国科学技术协会主办单位：中国航空学会北京航空航天大学

热塑性复合材料原位成型过程铺层间结合强度

Interlaminar bonding strength for thermoplastic composite in an in-situ consolidation process

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