通过改变阳极氧化处理程度得到了具有不同表面结构的碳纤维,然后将其与环氧树脂加工成碳纤维/树脂基复合材料,研究了碳纤维的化学结构与湿热环境下复合材料吸湿之间的关系.结果显示:阳极氧化处理后碳纤维表面的活性显著提高,碳纤维表面含氧官能团的含量大幅增加,尤其是-OH由处理前18.62％提高到处理后的34.84％.随着湿热处理条件的改变,复合材料的吸湿机理也有所差异,且温度是影响复合材料吸湿的重要因素.碳纤维表面活性越高,复合材料达到吸湿平衡时的平衡吸湿量越大,而平衡吸湿量的增加又会导致复合材料层间剪切强度(ILSS)下降幅度增大.
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