复合材料科学与工程 ›› 2025, Vol. 0 ›› Issue (6): 41-47.DOI: 10.19936/j.cnki.2096-8000.20250628.006

• 基础与力学性能研究 • 上一篇    下一篇

PP-g-MAH与氨基化纳米二氧化硅协同增强CF/PP复合材料

王海旭1, 孙进3, 赵巍3, 时振堂3, 潘雨曦1, 刘程1,2*, 蹇锡高1,2   

  1. 1.大连理工大学 化工学院 高分子材料系,大连 116024;
    2.辽宁省高性能树脂材料专业技术创新中心,大连 116012;
    3.中石化(大连)石油化工研究院有限公司,大连 116041
  • 收稿日期:2024-04-10 出版日期:2025-06-28 发布日期:2025-07-24
  • 通讯作者: 刘程(1976—),男,博士,研究员,博士生导师,长期从事高性能聚合物、耐高温树脂基复合材料、功能高分子材料等方面的研究,liuch1115@dlut.edu.cn。
  • 作者简介:王海旭(1999—),男,硕士研究生,研究方向为纤维增强热塑性树脂基复合材料。
  • 基金资助:
    中国石化科技部项目(222027)

Synergistic enhancement of CF/PP composite materials by PP-g-MAH and aminated silica nanoparticles

WANG Haixu1, SUN Jin3, ZHAO Wei3, SHI Zhentang3, PAN Yuxi1, LIU Cheng1,2*, JIAN Xigao1,2   

  1. 1. Department of Polymer Materials, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China;
    2. Technology Innovation Center of High Performance Resin Materials, Dalian 116012, China;
    3. Sinopec (Dalian) Petrochemical Research Institute Co., Ltd., Dalian 116041, China
  • Received:2024-04-10 Online:2025-06-28 Published:2025-07-24

摘要: 树脂本身强度及树脂与碳纤维之间的界面强度是影响连续碳纤维增强热塑性复合材料力学性能的重要因素。为了提高连续碳纤维增强聚丙烯基(CF/PP)热塑性树脂基复合材料的力学性能,本文通过添加马来酸酐接枝聚丙烯(PP-g-MAH)及氨基化纳米二氧化硅(SiO2-NH2)对高熔指PP进行改性,先后通过熔融浸渍和热压成型,制备连续碳纤维增强聚丙烯热塑性树脂基复合材料。结果表明:添加PP-g-MAH与SiO2-NH2使PP的结晶度提升2.5%,拉伸强度提升4.8%,弯曲强度提升5.3%;CF/PP复合材料的弯曲强度和层间剪切强度分别达到543.7 MPa和17.2 MPa,分别提升112.2%和66.0%。

关键词: 连续碳纤维增强热塑性树脂基复合材料, 聚丙烯, 力学性能, 氨基化纳米二氧化硅, 马来酸酐接枝聚丙烯

Abstract: The strength of the resin itself and the interface strength between the resin and carbon fiber are important factors affecting the mechanical properties of continuous carbon fiber reinforced thermoplastic composites. In order to improve the mechanical properties of continuous carbon fiber reinforced polypropylene (CF/PP) thermoplastic resin based composites, this paper modified high melt index PP by adding maleic anhydride grafted polypropylene (PP-g-MAH) and aminated nano silica (SiO2-NH2). Continuous carbon fiber reinforced polypropylene thermoplastic resin based composites were prepared by melt impregnation and hot pressing. The results showed that the addition of PP-g-MAH and SiO2-NH2 increased the crystallinity of PP by 2.5%, the tensile strength by 4.8%, and the bending strength by 5.3%; the bending strength and interlayer shear strength of CF/PP composite materials were increased by 112.2% and 66.0%, respectively, to 543.7 MPa and 17.2 MPa.

Key words: continuous carbon fiber reinforced thermoplastic composite, polypropylene, mechanical property, aminoated silica nanoparticle, maleic anhydride grafted polypropylene

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