摘要
碳纤维复合材料的性能很大程度上受使用环境的影响。本文研究了同一温度(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的压缩性能和含冲击损伤复合材料的压缩性能的影响;并研究分析了其质量变化、老化前后的表面形貌、傅里叶变换红外光谱(FTIR)及动态力学性能。结果表明:在蒸馏水和酸溶液中,质量变化率曲线符合FICK第二定律,质量变化率越大,材料的压缩性能、含冲击损伤材料的压缩性能和玻璃化转变温度下降越大,表面形貌破坏越严重;在碱溶液中,试样破坏严重,树脂也发生了化学反应,材料的性能和玻璃化转变温度不但受吸湿的影响,而且也受树脂化学反应的影响。研究结果对T700碳纤维/环氧树脂基复合材料在复杂环境下的使用和贮存具有重要的工程实际意义。
The performance of carbon fiber composites is greatly affected by the use environment.In this paper,the effects of different aging environments(distilled water,sulfuric acid solution with mass fraction of 10%and sodium hydroxide solution)at the same temperature(70℃)on the compressive properties and compressive properties of the materials with impact damage of T700 carbon fiber/epoxy resin matrix composites were studied.The mass change,surface morphology,fourier transform infrared spectroscopy(FTIR)and dynamic mechanical properties before and after aging were studied and analyzed.The results show that in distilled water and acid solution,the moisture absorption rate curve conforms to FICK’s second law.The greater the rate of mass change,the greater the decrease of compressive properties,compressive properties of the materials with impact damage and glass transition temperature,and the more serious the damage of surface morphology;in the alkali solution,the sample is seriously damaged,and the resin also had a chemical reaction,the properties and glass transition temperature of the material are not only affected by moisture absorption,but also by the chemical reaction of the resin.This research results have important engineering practical significance for the use and storage of T700 carbon fiber/epoxy resin matrix composites in more complex environment.
作者
黄研清
王兴银
许良
王鑫
周松
HUANG Yanqing;WANG Xingyin;XU Liang;WANG Xin;ZHOU Song(School of Mechanical and Electrical Engineering,Shenyang Aerospace University,Shenyang 110136,China;Key Laboratory of Fundamental Science for National Defense of Aeronautical Digital Manufacturing Process,Shenyang Aerospace University,Shenyang 110136,China)
出处
《复合材料科学与工程》
北大核心
2025年第1期97-103,共7页
Composites Science and Engineering
基金
沈阳航空航天大学航空制造工艺数字化国防重点学科实验室开放基金(SHSYS 202104)。
关键词
T700碳纤维/环氧树脂基复合材料
压缩性能
含冲击损伤的压缩性能
表面形貌
动态力学性能
T700 carbon fiber/epoxy resin matrix composites
compression performance
compressive properties of the materials with impact damage
surface topography
dynamic mechanical properties
