复合材料科学与工程 ›› 2025, Vol. 0 ›› Issue (10): 22-27.DOI: 10.19936/j.cnki.2096-8000.20251028.004

• 防弹防爆复合材料 • 上一篇    下一篇

聚氨酯上浆剂处理对芳纶纤维表面及界面性能的影响

邓志康1, 张鹏1, 孔海娟1*, 余木火1,2   

  1. 1.上海工程技术大学 材料科学与工程学院,上海 201620;
    2.东华大学 材料科学与工程学院,上海 201620
  • 收稿日期:2025-06-18 出版日期:2025-10-28 发布日期:2025-12-02
  • 通讯作者: 孔海娟(1985—),女,副教授,研究方向为高性能纤维及复合材料,Konghaijuan@sues.edu.cn。
  • 作者简介:邓志康(2000—),男,硕士研究生,研究方向为高性能纤维及复合材料。
  • 基金资助:
    上海市Ⅲ类高峰学科-材料科学与工程(高能束智能加工与绿色制造);四川省高技术有机纤维重点实验室项目(PLN2022-09)

Effects of the polyurethane sizing agent on surface and its interfacial properties for the aramid fiber

DENG Zhikang1, ZHANG Peng1, KONG Haijuan1*, YU Muhuo1,2   

  1. 1. School of Materials Science and Engineering, Shanghai University of Engineering Science, Shanghai 201620, China;
    2. School of Materials Science and Engineering, Donghua University, Shanghai 201620, China
  • Received:2025-06-18 Online:2025-10-28 Published:2025-12-02

摘要: 采用水性聚氨酯(Waterborne Polyurethane,WPU)上浆剂对芳纶纤维进行改性,提高芳纶纤维与热塑性聚氨酯(Thermoplastic Polyurethane,TPU)树脂界面结合性能和复合材料的力学性能。采用傅里叶红外光谱仪、X射线光电子能谱和扫描电镜等对芳纶纤维结构、表面元素组成和表面形貌进行表征,结果表明WPU上浆剂成功涂覆在芳纶纤维表面。对不同WPU含量的上浆剂对芳纶纤维表面能、拉伸强度、层间剪切强度等的影响进行研究。结果表明:不同WPU含量都可以提高纤维表面的粗糙度和表面能;WPU上浆剂质量分数为0.8wt%时,对性能的提高最明显,WPU-AF表面能提高了28.91%,层间剪切强度为32.7 MPa,提高了37.9%。

关键词: 聚氨酯, 芳纶纤维, 界面结合性能, 复合材料

Abstract: Waterborne polyurethane (WPU) sizing agent was used to modify aramid fiber (AF) and improve the interfacial bonding properties for AF and thermoplastic polyurethane (TPU) resin. The structure, surface element composition and morphology of AF were characterized by Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy and scanning electron microscopy. The results showed that WPU sizing agent was successfully coated on the AF surface. The effects of WPU content on the surface energy, interlaminar shear strength of aramid fibers and TPU were studied. It is found can improve the surface roughness and surface energy of fiber surface with various WPU content. When the content of WPU sizing agent is 0.8wt%, the surface energy of WPU-AF is increased by 28.91%, while the interlaminar shear strength is 32.7 MPa, increased by 37.9%.

Key words: polyurethane, aramid fiber, interfacial bonding, composites

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