碳纳米管改性的蜡基复合粘结剂

Mixed Wax-based Binders Modified by Carbon Nanotubes

通过熔融共混将功能化的碳纳米管引入到蜡基粘结剂中,得到碳纳米管改性的复合粘结剂.扫描电镜(SEM)显微照片显示,功能化的碳纳米管能均匀分散在粘结剂基体中.偏光显微照片和热性能分析结果表明,碳纳米管的加入能有效地提高粘结剂的结晶度和热稳定性,进而改善生坯在脱脂时的保形性.碳纳米管与粘结剂的非共价键结合有助于碳纳米管的均匀分散,更可能有利于复合材料成型后的脱脂.

Carbon nanotubes （CNTs） functionalized with various surface functional groups were introduced into the fabrication of binder for metal injection moulding. Scanning Electron Microscopy （SEM） micrographs indicated that the functionalized carbon nanotubes were homogeneously dispersed in binder matrix. The polarized optical micro- scopic photographs and thermal analysis results have shown that the addition of CNTs can not only effectively improve the crystallinity and thermal stability of the binder, but may also increase the green strength of injection sample. The non-covalent bond between carbon nanotubes and polyethylene contributed to the uniform dispersion of the carbon nanotubes and the debinder of the composite.