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酸刻蚀对玄武岩纤维表面偶联剂吸附量及纤维/环氧树脂复合材料力学性能的影响

, PP. 888-894

Keywords: 玄武岩纤维,酸刻蚀,硅烷偶联剂,复合材料,力学性能

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Abstract:

纤维与树脂的复合需要有一个良好的界面相,以便能将载荷从基体有效地传递给增强纤维,纤维表面改性处理是达到这一要求的主要方法。采用盐酸刻蚀法对玄武岩纤维(BF)表面进行处理,讨论了酸刻蚀对纤维单丝拉伸性能、表面硅烷偶联剂吸附量的影响以及盐酸浓度对BF/环氧树脂复合材料力学性能的影响。结果表明:纤维的单丝拉伸强度随着盐酸浓度的升高呈加速下降趋势;1mol/L盐酸处理后的纤维表面对硅烷偶联剂KH550的吸附量最大;1mol/L盐酸刻蚀后再经硅烷偶联剂KH550处理的纤维制成的BF-KH550/环氧树脂复合材料的弯曲性能、拉伸性能和层间剪切强度最优。

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