CF8611/AC531复合材料的实验室加速老化行为研究  

Laboratory Accelerated Aging Behavior of CF8611/AC531 Composite

作　　者：张勇 王安东 陈跃良 樊伟杰 马瑞民 ZHANG Yong;WANG An-dong;CHEN Yue-liang;FAN Wei-jie;MA Rui-min(Qingdao Campus of Naval Aviation University,Qingdao Shandong 266041,China)

机构地区：[1]海军航空大学青岛校区,山东青岛266041

出　　处：《装备环境工程》2020年第5期116-121,共6页Equipment Environmental Engineering

基　　金：山东省高等学校“青创科技计划”资助项目(2020KJA014)。

摘　　要：目的获得CFRP的老化行为规律,研究紫外辐照、温度和湿度等环境因素的影响,方法以湿热效应和光氧老化的等量、等效损伤为原则,确定实验室加速老化环境谱编制方法。以CF8611/AC531复合材料为对象,依据确定的加速老化试验方案,开展加速老化试验,观察其微观形貌,并测量开路电位和动电位极化曲线。结果老化前,CFRP表面完整无裂纹,碳纤维/树脂界面结合良好;老化后,树脂基体出现裂纹和孔洞,同时界面遭到破坏。极化曲线随着老化时间的增长会向右下方移动,自腐蚀电位微降,幅度为0.0326 V,自腐蚀电流密度增长了近1621倍。结论加速老化导致表面碳纤维裸露面积不断增大,时间越长,破坏作用越明显,实际使用中应防止其与金属直接接触。The paper aims to obtain the law of the aging behavior of CFRP and study the influence of environmental factors such as ultraviolet radiation, temperature and humidity. Based on the principle of equivalent damage of wet-heat effect and photooxidation aging, the method of compiling accelerated aging environmental spectrum in laboratory was determined;CF8611/AC531 composite was taken as the study object, and the accelerated aging test was carried out according to the determined accelerated aging test scheme. The micro-morphology was observed and the open-circuit potential and potentiodynamic polarization curves were measured. Before aging, there were no cracks on the surface of CFRP, and the carbon fiber/resin interface bonded well. After aging, cracks and holes appeared in the resin matrix, and the interface was destroyed at the same time. The polarization curve moved downward to the right with the increase of aging time. The self-corrosion potential decreased slightly by 0.0326 V. The self-corrosion current density increased by nearly 1621 times. Accelerated aging results in the increasing exposed area of carbon fibers on the surface. The longer the time, the more obvious the damage effect. It is necessary to prevent it from coming into direct contact with metals in practical use.

关 键 词：复合材料 加速老化行为 湿热效应 光氧老化 

分 类 号：TJ04[兵器科学与技术—兵器发射理论与技术]