碳纳米管径对MWCNTs/PMMA复合物耐磨损性的影响

Effect of Carbon Nanotube Diameter on Wear Resistance of MWCNTs/PMMA Composites

研究了具有四种不同碳纳米管径的MWCNTs/PMMA复合物系的耐磨损性.对MWC-NTs进行酸化处理,采用原位本体聚合方法制备复合板,用砝码质量法评价复合板的耐磨损性.研究结果表明:混酸处理后,MWCNTs在MMA中的分散稳定性得到明显提高,L-MWNTs-4060在PM-MA中分散得最好,L-MWNTs-60100分散得最差;L-MWNTs-4060型碳纳米管复合板的耐磨损性最好,L-MWNTs-60100型的最差;而L-MWNTs-1030和L-MWNTs-2040型的介于其两者中间.

Effect of the carbon nanotube diameter on wear resistance of MWCNTs/PMMA composite system with four diameters was studied in this paper. Mixed-acids treatment was employed to modify MWCNTs, in-situ bulk polymerization was used to prepare the composites, and wear resistance of the composites was evaluated by using the set of weights. Results show that： The dispersion stability of MWCNTs modified with the mixed acids in MMA is enhanced greatly; L-MWNTs-4060 has the best dispersion in the matrix PMMA, while L-MWNTs-60100 the worst; L-MWNTs4060/PMMA composites has the best wear resistance, while L-MWNTs-60100 the worst, and L-MWNTs-1030 and L-MWNTs-2040 in the middle.