论文部分内容阅读
气体渗透性低、机械强度差是炭膜产业化道路上的两大难题.研究发现,根源在于炭膜的蠕虫状孔道结构与均质炭膜的特有性质.为了解决炭膜渗透性低的问题,通过选择适宜的聚合物前驱体的分子结构与空间构型结合填充纳米粒子为功能基团等手段,实现对炭膜蠕虫状孔结构有效地调控与重新构建.在保证高选择性的条件下,不仅使炭膜的气体渗透性能提高了2个数量级以上,而且还使炭膜对某些气体具有较高分离选择性的功能化效果.为了改善炭膜的机械强度,将自主研发的廉价煤基炭膜支撑体与前驱体相复合,采用简单的制膜工艺,制备得到复合性能好、气体分离性能高的复合炭膜.
Low gas permeability and poor mechanical strength are two major problems on the industrialization of carbon membrane.The study found that the root cause lies in the peculiar nature of the worm-like pore structure and homogeneous carbon membrane of carbon membrane.In order to solve the problem of low permeability of carbon membrane, , By selecting the appropriate polymer precursor molecular structure and space configuration with nano-particles filled with functional groups and other means to achieve effective control and reconstruction of the wormhole-like carbon membrane structure in the conditions to ensure high selectivity , Not only increased the gas permeability of the carbon membrane by more than two orders of magnitude, but also enabled the carbon membrane to have a higher separation selectivity for certain gases. In order to improve the mechanical strength of the carbon membrane, a self-developed low-cost coal Based on the carbon film support and the precursors phase composite, a simple film-making process, prepared composite properties, high gas separation performance of the composite carbon membrane.