Method for preparing hollow fiber membranes by using thermally induced phase separation (TIPS) process

A technology of fiber membrane and thermotropic phase, applied in the field of polyvinylidene fluoride porous hollow fiber membrane and its preparation method, can solve the problems of unsatisfactory ultra- and microfiltration membrane effects and uneven distribution of membrane pore sizes that cannot meet the requirements of industrial production and other problems, to achieve the effect of good chemical cleaning resistance and hydrophilicity, excellent anti-pollution ability, and good anti-pollution characteristics
CN101890309BInactive Publication Date: 2012-11-14苏州膜华材料科技有限公司
0 Cites 4 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
苏州膜华材料科技有限公司
Publication Date
2012-11-14
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention relates to a polyvinylidene fluoride (PVDF) porous hollow fiber membrane and a preparation method thereof. The fiber membrane comprises the following components in percentage by mass: 25 to 40 percent of polyvinylidene fluoride (PVDF) serving as a first polymer P1; 0 to 3 percent of polymethylmethacrylate (PMMA) serving as a second polymer P2; 38 to 54 percent of acetic diethylene glycol ether ester serving as a first diluent D1; and19 to 25 percent of tetraglycol serving as a second diluent D2. The PVDF hollow fiber ultra filter membrane prepared by using the method of the invention has the advantages of excellent chemical stability, pollution resistance and high strength, and can provide high-performance membrane products for MBR crafts.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a polyvinylidene fluoride (PVDF) porous hollow fiber membrane and a preparation method thereof, in particular to a polyvinylidene fluoride (PVDF) porous hollow fiber membrane prepared by a thermotropic phase method and a preparation method thereof. Background technique

[0002] Membrane bioreactor process (MBR) is a new and efficient sewage treatment technology, which can realize biocatalytic reaction and separation of water and degraded substances at the same time, so that water resources can be regenerated and water quality standards can be realized. It is a contemporary advanced, high-efficiency and low-energy-consumption wastewater advanced treatment and new technology for regeneration and reuse. Among them, the preparation of ultrafiltration membranes and microfiltration membranes with high strength, good anti-pollution performance and low cost is the core technology of membrane bioreactor technology. However, most of the...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More