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中文摘要：
气相生长碳纤维经双氧水改性处理，然后采用不同浓度硅烷偶联剂（γ-氨丙基三乙氧基硅烷）进行硅烷功能化处理。利用光学观察和SEM研究经过硅烷功能化处理前后的VGCF在溶剂中的分散稳定性及在复合材料中的分散性及与基体结合情况。结果显示：不同浓度硅烷功能化处理的VGCF在溶剂中具有不同的分散稳定性；在制备的气相生长碳纤维／形状记忆聚氨酯复合材料中，不同浓度硅炕功能化处理的VGCF在基体中分散性不同；不同浓度硅烷功能化处理的VGCF在复合材料中与基体的界面结合均得到一定程度提高，将有利于有效增强复合材料的力学性能。最终结果表明，硅烷与气相生长碳纤维质量比1：1的功能化处理为最佳。
英文摘要：
Vapor grown carbon fibers （VGCF） are surface modified with hydrogen peroxide. Then, functionalized VGCF are silanized using silane coupling agent （3-aminopropyl triethoxysilane） at different concentrations. The dispersion stability of pristine VGCF and silanized VGCF in solvents, dispersion in composites and interracial adhesion with matrix, are investigated by optical observation and scanning electron microscopy. The results indicate that, different concentrations of silanized functionalized VGCF display different dispersion stability in solvents. Moreover, different concentrations of silanized functionalized VGCF show different dispersion in the prepared VGCF/SMPU composites, and the interracial adhesion between silanized functionalized VGCF and matrix at different concemrations are all improved to a certain extent, which will benefit the effective mechanical reinforcement of composites. Finally, the most proper concentration of functionalization treatment is 1 ： 1 of silane to VGCF by weight ratio.
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