多壁碳纳米管的表面改性及其在防火涂料中的应用  

Surface modification and application of multi-walled carbon nanotubes in fire-retardant coatings

作　　者：邱军[1] 张世红[2] 王国建[1] 龚懿蕾[1] 

机构地区：[1]同济大学材料科学与工程学院,上海200092 [2]西南石油大学化学化工学院,四川成都610500

出　　处：《新型炭材料》2009年第4期344-348,共5页New Carbon Materials

基　　金：国家高技术研究发展计划(863计划)项目(2009AA03Z528)~~

摘　　要：利用两亲性聚合物对多壁碳纳米管(MWCNTs)进行改性,采用红外光谱、热重分析手段对改性MWC-NTs进行表征;将改性MWCNTs应用到膨胀型防火涂料体系中,研究了其对防火涂料性能的影响。结果表明:在适合的条件下两亲性聚合物可以被引入到多壁碳纳米管表面,改性后的MWCNTs在醋酸丁酯和水中具有良好的溶解性;合适含量的改性MWCNTs可以提高防火涂料受火后的炭化层强度和膨胀倍率,降低背温升高速率,增强涂层的抗开裂性能。Multi-walled carbon nanotubes （MWCNTs） were modified by grafting an amphiphilic polymer,which were characterized by Fourier transform infrared spectroscopy and thermogravimetric analysis. The modified MWCNTs were added to an intumescent fire-retardant coating and their effects on the performance of the coating were studied. Results show that the amphiphilic polymer can be attached to the surface of MWCNTs by appropriate processing,and the modified MWCNTs exhibit a remarkable solubility in butyl acetate and distilled water. The modified MWCNTs added to the coating can strengthen the carbonized layers, increase intumescent times and decrease the increasing rate of the rear temperature when the coating was exposed to a fire. The modified MWCNTs can also enhance the crack resistance of the coating.

关 键 词：碳纳米管 表面改性 防火涂料 两亲性聚合物 溶解性 

分 类 号：TB383.1[一般工业技术—材料科学与工程]