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采用交流电场诱导法制备了多壁碳纳米管(MWCNTs)均匀分散且定向有序排列的MWCNTs/环氧树脂复合材料。采用SEM、偏振拉曼光谱等研究了电场强度、MWCNTs含量、加电时间及温度(黏度)等因素对MWCNTs定向排列的影响,讨论了MWCNTs有序排列对MWCNTs MWCNTs/环氧树脂复合材料电学和力学性能的影响。结果表明:MWCNTs沿电场方向有序排列;MWCNTs/环氧树脂复合材料施加交流电场后的拉曼强度明显高于未施加电场的情况;当MWCNTs含量从0wt%增加到0.025wt%时,MWCNTs/环氧树脂复合材料导电率从2.3×10~(-12)S/cm增加到1.3×10~(-8)S/cm,增加了约4个数量级;MWCNTs含量为2.5wt%时,MWCNTs/环氧树脂复合材料拉伸强度提高了26.3%。
MWCNTs / epoxy composites with MWCNTs uniformly dispersed and aligned in order were prepared by AC field induction method. The effects of electric field intensity, MWCNTs content, charging time and temperature (viscosity) on the orientation of MWCNTs were investigated by SEM and polarized Raman spectroscopy. The effects of ordered arrangement of MWCNTs on the electrical and chemical properties of MWCNTs / epoxy composites Effect of mechanical properties. The results show that the MWCNTs are arranged orderly along the electric field. The Raman intensities of the MWCNTs / epoxy composites are obviously higher than those without the electric field. When the content of MWCNTs increases from 0wt% to 0.025wt%, the MWCNTs / The electrical conductivity of epoxy resin composites increased from 2.3 × 10 ~ (-12) S / cm to 1.3 × 10 ~ (-8) S / cm, which increased by about 4 orders of magnitude.When the MWCNTs content was 2.5wt%, the MWCNTs / Epoxy resin composite tensile strength increased by 26.3%.