采用浓H2SO4/浓HNO3混合酸对碳纤维(CF)进行表面氧化处理得到氧化碳纤维(OCF),再利用γ-甲基丙烯酰氧丙基三甲氧基硅烷(KH-570)与OCF进一步反应得到KH-570接枝改性碳纤维(KCF),随后将其应用于乙烯-醋酸乙烯共聚物(EVA)复合泡沫材料中.利用FTIR、XPS、Raman、FESEM和电子万能试验机等考察了碳纤维的表面改性效果以及碳纤维/EVA复合材料的结构与性能.结果表明:氧化和接枝反应均可以增加碳纤维表面的活性官能团含量和粗糙度,从而改善碳纤维与EVA基体之间的相容性,使碳纤维/EVA复合泡沫材料的物理性能得到改善.相同条件下,KH-570接枝改性碳纤维/EVA复合泡沫材料的物理性能更优异.
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