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The influence of drawing process on the properties of PPHF

Authors： HUANGFU Fengyun1,2,DAI Peng2, KONG Yuanyuan1, BAI Yundong1, LI Haiming2

Units： 1.Tianjin Polytechnic University for the textile auxiliaries co.,LTD, Tianjin 300160,China 2.Institute of environmental and chemical engineering,Tianjin Polytechnic University, State Key Laboratory of Hollow Fiber Membrane Materials and Processes, Tianjin 300160,China

KeyWords： polypropylene; hollow fibers membrane; melt-stretch method; drawing process

ClassificationCode：TQ028.8

year,volume(issue):pagination： 2014,34(3):43-47

Abstract：

In this thesis polypropylene hollow fibers (PPHF) membrane are prepared by using melt-stretch method. Different performance of hollow fiber membrane are made by changing draw ratio and draw rate, and they are tested and characterized from the macro and micro level. The results showed that with the increase of draw ratio, water flux, gas flux and average pore diameter are increase firstly and then decrease. And the porosity is increased firstly and remain unchanged subsequently. With the increase of draw rate, The elastic recovery rate of membrane is increased firstly and remain unchanged then. And the porosity and gas flux of membrane are increase firstly and decrease subsequently then increase again. The SEM photos confirm this changes.

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AuthorIntro：

皇甫风云（1956-），男，天津市人，研究员，从事反应性膜材料的研究

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