一种碳纳米管掺杂改性聚氨酯水性分散体的制备与性能研究  

Study on preparation and properties of carbon nanotubes modified polyurethane aqueous dispersions

作　　者：杨正龙[1] 秦深[1] 浦鸿汀[1] 张航[1] 

机构地区：[1]同济大学材料科学与工程学院功能高分子材料研究所

出　　处：《功能材料》2008年第6期1030-1033,共4页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(50703029);上海市纳米专项资助项目(0752nm012);光大环保创新基金资助项目(0500253053)

摘　　要：采用化学改性方法研制了一种碳纳米管掺杂改性的聚氨酯水性分散体,并采用扫描电镜、激光粒径分析、紫外-可见光吸收和热失重等测试手段对该新型聚氨酯水性分散体的性能进行研究。实验结果表明,该聚氨酯水性分散体具有良好的室温贮存稳定性,碳纳米管与水性聚氨酯分散体具有良好的相容性和协同增强效应,碳纳米管的掺杂改性能够提高聚氨酯涂膜的耐热性能,同时该聚合物涂膜在可见光区的透过率仍然能够达到80%以上,而在紫外光区的透过率则明显降低。A new kind of polyurethane aqueous dispersions modified by carbon nanotubes （CNTs） were preparation by covalently bond in this paper. The resulting polyurethane dispersions and their thin films were characterized and investigated by SEM, particle size measurements, UV-vis and TGA. It is shown that the CNTs have good compatibility and synergistic enhancement performance with polyurethane dispersions, and the resulting CNTs doping polyurethane dispersions have good solution stability at room temperature. Doped by CNTs, polyurethane dispersions films have enhanced heat resistance, as well as remain over 80% visible transmission and less UV transmission than pure polyurethane film.

关 键 词：聚氨酯水性分散体 碳纳米管 掺杂 制备 性能 

分 类 号：TQ433.4[化学工程] TN305.3[电子电信—物理电子学]