研究了Ultraviolet A(UVA)紫外辐射对碳纤维增强环氧树脂基复合材料产生的影响.测量和分析了从窗户照射到室内太阳光和日光灯辐射的UVA紫外线辐照度,研究了碳纤维增强环氧树脂基复合材料经辐照度为200 μW·cm-2的UVA紫外灯辐射处理后的力学性能变化,并通过XPS、接触角、纳米压痕、原子力显微镜(AFM)测试方法研究了其表面性能变化.结果表明:春夏季节晴天室内太阳光紫外辐照度在14点时达到最大值,距离窗户0m处最大值为375 μW·cm-2,1m处最大值迅速降至30 μW· cm-2；对功率40 W的日光灯,距离日光灯Om处,紫外辐照度为87.3 μW·cm-2,1m处快速降至5.4μW· cm-2;经过45天的紫外辐射,碳纤维增强环氧树脂基复合材料的层间剪切强度、弯曲强度和拉伸强度无明显变化；碳纤维增强环氧树脂基复合材料表面发生氧化反应,表面硬度和粗糙度变大.
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