二Kevlar纤维(KF)经氢化钠活化后与3-氯丙烯和3-氯丙基三甲氧基硅烷反应进行表面接枝改性,然后与木粉和高密度聚乙烯(HDPE)熔融复合制备了KF-木粉/HDPE混杂复合材料(KWPCs).利用扫描电镜(SEM)、光电子能谱(XPS)、红外光谱(FT-IR)等方法对改性KF进行了表征,考察了KF用量及分布形态对KWPCs力学性能的影响.结果表明,将烯丙基和三甲氧基硅丙基同时接枝到KF、表面,能改善KF与基体HDPE的界面相容性;与未添加KF的木粉/HDPE复合材料相比,添加少量(2%～3%)接枝改性处理的KF能明显改善KWPCs的拉伸和弯曲性能,同时杭冲击性能得到显著提高.
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