摘要
利用真空抽滤法制备出具有宽频域吸光性能，且可应用于金属和塑料等多种环境的自支持碳纳米管薄膜（CNF）；利用表面活性剂辅助制备了稳定的碳纳米管分散液，利用真空抽滤法在混合纤维素滤膜上得到了不同厚度的碳纳米管薄膜，并利用氙灯加热法实现了薄膜的完美分离。结果表明：碳纳米管分散液经真空抽滤后可在滤膜上形成具有纠缠交错呈平面网状结构的连续均匀各向同性薄膜，薄膜厚度与抽滤碳纳米管沉积量成正比关系；薄膜的光吸收率随着方阻的增大而增大，实验观察结果与用电磁场理论分析结果相符；350～2500nm波段宽频域的光吸收率为94％～98％，并具有一定的提高空间。
Self-supporting carbon nanotube films （CNFs） with light absorption in broadband frequency field are prepared by the method of vacuum filtration, and the films can be applied to a variety of environments, such as metal and plastic. Carbon nanotubes aqueous solutions with stable dispersion are prepared with the assist of surfactant. CNFs with different thicknesses are prepared on mixed cellulose membrane filter by vacuum filtration method. Perfect separation of the films is achieved with xenon lamp heating method. The results show that entangled and continuous isotropy CNFs with staggered planar mesh structure are formed from carbon nanotube dispersion solution and the film thickness is proportional to the amount of deposition carbon nanotubes; the light absorption rate increases with the increase of sheet resistance, which is consistent with optical absorption characteristics in electromagnetic field theory. The light absorption rate in the wavelength region of 350~2500 nm is 94% 498%, which has certain potential.
出处
《中国激光》
EI
CAS
CSCD
北大核心
2013年第B12期184-189,共6页
Chinese Journal of Lasers
基金
国家自然科学基金（61376121）、中央高校基本科研业务费科研专项（106112013CD]ZRl20008）
关键词
薄膜
碳纳米管薄膜
真空抽滤法
吸光性能
电磁场理论
thin films
carbon nanotube film
vacuum filtration method light absorption performance electromagnetic field theory
