碳纳米管接枝炭纤维对环氧树脂浸润性能的影响

Preparation of a carbon nanotube/carbon fiber hybrid and its wettability with epoxy

摘要: 以乙炔为碳源、二茂铁为催化剂，通过雾化辅助化学气相沉积法(AACVD)制备多尺度杂化材料CNT/CF。利用扫描电镜(SEM)、透射电镜(TEM) 表征所制CNT/CF的形貌及其微观结构。结果表明：在反应温度750℃~800℃、沉积30min的条件下，碳纳米管(CNTs)能够以较高的密度均匀生长在炭纤维表面形成多尺度杂化材料CNT/CF。单纤维拉伸测试表明：在700℃~800℃、沉积30min的条件下所制CNT/CF的单纤维拉伸强度降低幅度小于13%；在反应温度750℃、沉积40min的条件下、单纤维拉伸强度降低幅度小于10%。纤维悬挂液滴法研究表明：所制 CNT/CF比原始炭纤维对环氧树脂有更好的浸润性能。

Abstract: A carbon nanotube/carbon fiber (CNT/CF) hybrid was prepared via an aerosol-assisted chemical vapor deposition (AACVD) method using acetylene as carbon source and ferrocene as catalyst. The morphology and microstructure of the CNT/CF hybrid were characterized by SEM and TEM. It was found that CNTs were uniformly and densely grown onto CFs at 750-800℃ for 30min. Results obtained from single fiber tests showed that the tensile strength of the CNT/CF hybrid decreased by 13% after AACVD at 750-800℃ for 30min compared to that of CFs, however, the tensile degradation was less than 10% after AACVD at 750℃ for 5 to 40min. The wettability of the hybrid with epoxy resin was improved compared with that of the original CFs