聚酯中空纤维膜
Polyester hollow fiber membrane
具有气体分离功能的聚酯中空纤维均质膜。纤维内径15～20μm，外径28.2～37.8μm，中空率28%～34%，He与CH4的渗透系数各层12.2×10-9和0.031×10-9cm3·cm/(cm2·s·cmHg)。[9×10-9和0.023×10-9cm3·cm/(cm2·s·kPa)]操作温度40℃，可通过四级分离，使天然气中所含的0.5%氦，提纯至99.9%浓度。制法是将聚酯用中空喷丝板熔纺，中心部通入低压气体或吸入自然风。用途是从天然气分离氦气等。
Polyester hollow fiber homogeneous membrane with gas separation function. The inner diameter of the fiber is 15~20 micron m, the outer diameter is 28.2 to 37.8 m, the hollowing rate is 28% to 34%, the permeability coefficient of He and CH4 is 12.2 * 10-9 and 0.031 x 10-9cm3 cm/ (cm2. S. CmHg). The operating temperature of [9 * 10-9 and 0.023 * 10-9cm3. Cm/ (cm2. S. KPa) is 40 degrees C, which can be purified to 99.9% concentration by separating four helium from natural gas by four stage separation. The method is to melt polyester through hollow spinneret, enter low pressure gas or breathe natural wind at the center. The purpose is to separate helium from natural gas and so on.