• 专利标题:   Preparing hollow fiber membrane with bimodal pore size distribution, involves mixing raw materials including ultra-high molecular weight polyethylene, solvent, water-soluble salt porogen, and auxiliary additives.
  • 专利号:   CN112316746-A, CN112316746-B
  • 发明人:   ZHANG T, QU Z, ZHANG H, LIU B, CHEN H
  • 专利权人:   WANHUA CHEM GROUP CO LTD, WANHUA CHEM NINGBO CO LTD
  • 国际专利分类:   B01D067/00, B01D069/02, B01D069/08, B01D071/26
  • 专利详细信息:   CN112316746-A 05 Feb 2021 B01D-071/26 202124 Pages: 10 Chinese
  • 申请详细信息:   CN112316746-A CN10941528 09 Sep 2020
  • 优先权号:   CN10941528

▎ 摘  要

NOVELTY - Preparing hollow fiber membrane with bimodal pore size distribution, involves mixing raw materials including ultra-high molecular weight polyethylene, solvent, water-soluble salt porogen, and auxiliary additives to prepare ultra-high molecular weight polyethylene jelly. The obtained ultra-high molecular weight polyethylene jelly is at least extruded-cured-solvent-removed-water-soluble salt porogen-drying-heat stretching process to prepare the membrane. USE - Method for preparing hollow fiber membrane with bimodal pore size distribution. ADVANTAGE - The method enables to prepare ultra-high molecular weight polyethylene hollow fiber film with bimodal pore size distribution, which has high efficiency interception filtering performance, reduces the flow resistance of the filter liquid to improve the water flux, inhibits the growth of microorganism, and reduces risk of micropore blockage.