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采用微波辐射法,以多巴胺(Dop)为改性剂,多壁碳纳米(MWCNTs)管与多巴胺间形成共价键合的功能化。通过FT-IR、XRD、TGA、SEM和TEM对多巴胺功能化的MWCNT-Dop进行表征。MWCNTs得到高度功能化,可作为一种MWCNTs酚基化的有效方法。采用溶液共混工艺制备出MWCNT-Dop增强的聚(酰胺-酰亚胺)基复合材料。通过高能超声,MWCNT-Dop(0~15 wt%)分散于聚合物基体中。TGA结果表明,该复合材料具有良好的热稳定性。拉伸力学测试表明,随着MWCNT-Dop含量的增加,该复合材料的弹性模量增加。
The functionalization of covalent bonding between multiwalled carbon nanotubes (MWCNTs) and dopamine was carried out by microwave irradiation with Dop as modifier. The dopamine functionalized MWCNT-Dop was characterized by FT-IR, XRD, TGA, SEM and TEM. MWCNTs are highly functionalized as an efficient method for the phenylation of MWCNTs. MWCNT-Dop reinforced poly (amide-imide) matrix composites were prepared by solution blending. MWCNT-Dop (0-15 wt%) is dispersed in the polymer matrix by high-energy ultrasound. TGA results show that the composite has good thermal stability. Tensile tests show that with the increase of MWCNT-Dop content, the elastic modulus of the composites increases.