PAN基中空纤维炭膜炭化条件的研究

研究了以ＰＡＮ其中空纤维膜为基质制备中空纤维央膜的过程。考察了ＰＡＮ厚膜的预氧化和炭化条件对中空纤维炭膜Ｈ２，Ｎ２气体渗透性和选择性的影响。结果表明，预氧化温度和时间对Ｈ２，Ｎ２气体的渗透速率有一定影响；

STUDY ON CARBONIZATION CONDITIONS FOR A PAN BASED HOLLOW FIBER CARBON MEMBRANE

This paper presents astudy of aprocess for preparing ahollow fiber carbonmembranefrom PAN based hollow fiber membrane The influnces of preoxidation and car bonizationconditions on the permeability and selectivity of H 2 and N 2 through the carbonmembraneare discussed The results show that increase in temperature and duration time ofthepreoxidation increases the permeation rates of H 2 and N 2 but has only alittle effect on theseperationfactor of H 2 and N 2 The permeation rates of H 2 and N 2 decrease with increasingcarbonizationtemperature,but the seperation factor of H 2 and N 2 increases with increasingcarbonizationtemperature The surface and crosssection structures of the carbon membraneandthe precursor membrane were studied with SEM The performances of amodel carbonmembraneare analyzed