复合材料科学与工程 ›› 2025, Vol. 0 ›› Issue (7): 27-32.DOI: 10.19936/j.cnki.2096-8000.20250728.004

• 基础与力学性能研究 • 上一篇    下一篇

腐蚀环境对碳纤维复合材料二次冲击损伤和剩余压缩强度的影响

陈燕荣1, 王兴银2*, 许良2, 孙琳1, 王鑫2   

  1. 1.中车青岛四方机车车辆股份有限公司,青岛 266111;
    2.沈阳航空航天大学 机电工程学院,沈阳 110136
  • 收稿日期:2024-05-10 出版日期:2025-07-28 发布日期:2025-08-22
  • 通讯作者: 王兴银(1997—),男,硕士研究生,主要从事航空材料与结构强度方面的研究,2353257919@qq.com。
  • 作者简介:陈燕荣(1976—),男,硕士,正高级工程师,主要从事复合材料研发方面的研究。
  • 基金资助:
    山东省重大科技创新工程计划(2021ZDPT02)

Effect of corrosion environments on the secondary impact damage and residual compressive strength of carbon fiber composites

CHEN Yanrong1, WANG Xingyin2*, XU Liang2, SUN Lin1, WANG Xin2   

  1. 1. CRRC Qingdao Sifang Co., Ltd., Qingdao 266111, China;
    2. School of Mechanical and Electrical Engineering, Shenyang Aerospace University, Shenyang 110136, China
  • Received:2024-05-10 Online:2025-07-28 Published:2025-08-22

摘要: 碳纤维复合材料的性能很大程度上取决于使用环境。本文研究同一温度(70 ℃)下,三种老化环境(蒸馏水、质量分数均为10%的硫酸溶液和氢氧化钠溶液)对T700碳纤维/环氧树脂基复合材料二次冲击损伤和剩余压缩强度的影响,并研究分析了其傅里叶变换红外光谱(FTIR)、老化前后的表面形貌及C扫损伤形貌变化。结果表明:在蒸馏水和酸溶液中,试样只发生了物理破坏,其表面形貌破坏程度、C扫损伤形貌、剩余压缩强度等变化均与水分子的渗透作用有关系;在碱溶液中,试样破坏严重,树脂也发生了化学反应,材料的性能、C扫损伤形貌等变化既有吸湿的影响,也有树脂化学破坏的影响。本文研究结果对提升此类复合材料在复杂环境下的持续服役寿命和维修经济性有着十分重要的实际意义。

关键词: T700碳纤维/环氧树脂基复合材料, 二次冲击, 压缩性能, 表面形貌, C扫损伤形貌

Abstract: The properties of carbon fiber composites depend largely on the environment in which they are used. The effects of three aging environments (distilled water, 10% sulfuric acid solution and sodium hydroxide solution) at the same temperature (70 ℃) on the secondary impact damage and residual compressive strength of T700 carbon fiber/epoxy resin matrix composites were studied. Fourier transform infrared spectroscopy (FTIR), the surface morphology before and after aging and the C-scan damage morphology were studied and analyzed. The results show that only physical damage occurs in the samples in distilled water and acid solution, and the changes of surface topography, C-scan damage morphology and residual compressive strength are related to the infiltration of water molecules. In alkali solution, the sample is seriously damaged, and the resin also has a chemical reaction. The properties of the material and the C-scan damage morphology have both effects on hygroscopicity and chemical damage of the resin. The research results are of great practical significance for improving the continuous service life and maintenance economy of these composite materials in complex environment.

Key words: T700 carbon fiber/epoxy resin matrix composites, secondary impact damage, compression performance, surface topography, C-scan damage morphology

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