The functionalmembrane prepared with nano-charcoal powders improves the CO2 permeability more or less, but has little effect on other gases.
钛硅分子筛掺杂制备的功能炭膜的气体渗透性能随测试温度的改变有明显变化，而测试压力对其没有显著影响。
2
Nowadays the percentage of indigenous reverse osmosis (RO) membrane applied in our country is low for the deficiency of RO membranefunctional materials which lead to little species RO membranes.
Membrane materials with special functional features or combination of different types of materials can also be used to regulate the drug release rate of the pellets.