复合材料科学与工程 ›› 2022, Vol. 0 ›› Issue (1): 22-28.DOI: 10.19936/j.cnki.2096-8000.20220128.003

• 基础研究 • 上一篇    下一篇

不同工艺参数和界面改性对碳纤维增强聚苯硫醚复合材料Ⅰ型层间断裂韧性的影响

常舰1,2*, 肖海刚1,2*, 谢钟清1,2*, 毕华阳1,2*, 郑金华1,2*, 朱姝3,4,5*, 侯进森1,2*   

  1. 1.上海复合材料科技有限公司,上海201112;
    2.上海航天树脂基复合材料工程技术研究中心,上海201112;
    3.东华大学 民用航空复合材料协同创新中心,上海201620;
    4.东华大学 上海市轻质结构复合材料重点实验室,上海201620;
    5.东华大学 纤维材料改性国家重点实验室,上海201620
  • 收稿日期:2021-03-19 出版日期:2022-01-28 发布日期:2022-02-10
  • 通讯作者: 朱姝(1983-),女,博士,副教授,主要从事树脂基复合材料方面的研究,zhushu@dhu.edu.cn。
  • 作者简介:常舰(1994-),男,硕士,工程师,主要从事树脂基复合材料方面的研究。
  • 基金资助:
    上海市科委科技创新行动计划项目(20511107200)

Effects of different process parameters and interfacial modification on the fracture toughness of type Ⅰ interfacial of carbon fiber reinforced polyphenylene sulfide composites

CHANG Jian1,2, XIAO Hai-gang1,2, XIE Zhong-qing1,2, BI Hua-yang1,2, ZHENG Jin-hua1,2, ZHU Shu3,4,5*, HOU Jin-sen1,2   

  1. 1. Shanghai Composites Technology Co., Ltd., Shanghai 201112, China;
    2. Shanghai Engineering Research Center of Aerospace Resin Based Composites, Shanghai 201112, China;
    3. Collaborative Innovation Center for Civil Aviation Composites, Donghua University, Shanghai 201620, China;
    4. Shanghai Key Laboratory of Lightweight Structural Composites, Donghua University, Shanghai 201620, China;
    5. State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai 201620, China
  • Received:2021-03-19 Online:2022-01-28 Published:2022-02-10

摘要: 本文研究了不同工艺参数(温度、压力、降温速率)和界面改性对碳纤维增强聚苯硫醚(CF/PPS)航空热塑性复合材料Ⅰ型层间断裂韧性的影响。试验发现较高成型温度(340 ℃)、较快降温速率(32 ℃/min)和经过界面改性的CF/PPS复合材料的Ⅰ型层间断裂韧性(GⅠC)更高。这是因为较高的温度有利于聚苯硫醚(PPS)分子链发生缠结;较快的降温速率抑制了PPS结晶,使基体韧性更好。利用课题组自制的上浆剂对碳纤维(CF)进行改性,发现经过界面改性的CF/PPS复合材料界面相互作用加强,强界面性能有利于应力和能量传递,因此GⅠC值较未改性的CF/PPS复合材料更高。成型压力对CF/PPS复合材料的GⅠC影响不明显,较高的成型压力反而会导致树脂对纤维的浸渍减弱,大量树脂从模具边缘间隙溢出,不利于复合材料韧性的提高。

关键词: 热塑性复合材料, 聚苯硫醚, 断裂韧性, 成型工艺, 界面改性

Abstract: In this paper,the effects of different temperatures, pressures, cooling rates, and interfacial modification on the fracture toughness of type I interfacial of carbon fiber reinforced polyphenylene sulfide(CF/PPS) aeronautical thermoplastic composites were investigated. At higher molding temperature (340 ℃), fast cooling rate (32 ℃/min), and interfacial modification, CF/PPS composites exhibit higher GⅠC value. The higher temperature favors the entanglement of the intermolecular matrix chains. The faster cooling rate suppresses the crystallization and makes the matrix tougher. The CF interfacial modification improves the interfacial interaction between the fiber and the matrix resin, which is beneficial to stress and energy transfer. This paper has reference value for the preparation and application of aeronautical thermoplastic composites. The effect of pressure on the GⅠC of CF/PPS is not obvious. Higher molding pressure will cause the resin to impregnate the fibers weakly, and a large amount of resin will overflow from the gap between the mold edges, which is not conducive to the improvement of the toughness of the composite material.

Key words: thermoplastic composites, polyphenylene sulfide, fracture toughness, molding processing, inter-face modification

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