采用海水浸泡-阳光曝晒循环老化的方法,模拟实际海洋环境载荷对T300/环氧复合材料的作用,用以评价手糊成型T300/环氧复合材料在海洋环境中的耐久性.通过对老化前后复合材料的质量变化、轴向抗拉强度、拉伸模量、面内剪切强度及压缩强度等基本力学性能的分析,研究T300/环氧复合材料的老化规律.结果表明:经过湖北武汉和海南三亚140天的自然循环老化,增重率随时间的增加而增加,力学性能的衰减趋势基本一致,其中拉伸模量老化特征不明显,抗拉强度变化较小,然而面内剪切强度和轴向压缩强度衰减幅度较大,干态试件剩余强度大于湿态试件剩余强度.
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