Fabricating method of fiber powder modified polymer microporous film

A powder modification and polymer technology, applied in chemical instruments and methods, membrane technology, semi-permeable membrane separation, etc., can solve the problems of easy agglomeration of inorganic nanoparticles, and achieve low preparation cost, less addition, and variety many effects

Inactive Publication Date: 2008-07-23
WUHAN TEXTILE UNIV
View PDF0 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The modification method of inorganic nanoparticle blending has also gradually received attention, mainly because the addition of inorganic nanoparticles improves the mechanical properties of the membrane on the one hand, and improves the hydrophilicity of the membrane on the other hand, but the inorganic nanoparticles are prone to agglomeration

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Fabricating method of fiber powder modified polymer microporous film
  • Fabricating method of fiber powder modified polymer microporous film
  • Fabricating method of fiber powder modified polymer microporous film

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0043] Take 0.5g of the washed hydrophobic polyester and acrylic fiber, the average particle diameters of the two fiber powders are 72.82 μm and 91.98 μm respectively), put them into two round bottom flasks respectively, and add 79.7g of solvent DMAc. Mix them thoroughly in the flask, and disperse them in an ultrasonic oscillator for 5 hours at a temperature of 25°C. Then add 9.3g of polyvinylidene fluoride, 3.0g of polyvinylpyrrolidone, 4.5g of deionized water and 3.0g of 1,2-propanediol to the two solutions, seal and stir at a constant temperature under an electric stirrer at a temperature of 70°C , the time is 24h. Then scrape the four casting solutions, scrape the casting solution on the glass plate with a scraper to form a solution film with a thickness of 300 μm, let it stand in the air for 5 seconds, and then immerse it in a deionized water coagulation bath at 25°C for 10 minutes Finally, the membrane was removed from the coagulation bath and immersed in deionized wate...

specific Embodiment 2

[0046] Take 0.5g each of the cleaned hydrophobic vinylon and viscose fiber powders. The average particle diameters of the two fiber powders are 92.04μm and 81.93μm respectively, and put them into two round bottom flasks respectively, and add 79.7g of solvent DMAc . Mix them thoroughly in the flask, and disperse them in an ultrasonic oscillator for 5 hours at a temperature of 25°C. Then add 9.3g of polyvinylidene fluoride, 3.0g of polyvinylpyrrolidone, 4.5g of deionized water and 3.0g of 1,2-propanediol to the two solutions, seal and stir at a constant temperature under an electric stirrer at a temperature of 70°C , the time is 24h. Then scrape the four casting solutions, scrape the casting solution on the glass plate with a scraper to form a solution film with a thickness of 300 μm, let it stand in the air for 5 seconds, and then immerse it in a deionized water coagulation bath at 25°C for 10 minutes Finally, the membrane was removed from the coagulation bath and immersed in...

specific Embodiment 3

[0049]Take 0.5g of washed natural protein fiber wool and down, with average particle sizes of 53.45μm and 61.16μm, respectively, and put them into two round bottom flasks, and add 79.5g of solvent DMF. Mix them thoroughly in the flask, and disperse them in an ultrasonic vibration dish for 4 hours at a temperature of 25°C. Add 15.0g polyvinylidene fluoride (PVDF, Shanghai 3F New Material Co., Ltd., model is FR904), 5.0g polyethylene glycol 6000 to four kinds of solutions afterwards, seal, carry out constant temperature stirring under electric stirrer, temperature control At 40° C. for 48 hours, filter and vacuum defoam the membrane-forming solution prepared above. Then scrape the four kinds of casting solutions, and use a scraper to scrape the casting solution on the glass plate to form a solution film with a thickness of 300 μm. After standing in the air for 5 seconds, immerse in a deionized water coagulation bath at 25 ° C for 10 minutes. Finally, the membrane was removed fr...

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

PUM

PropertyMeasurementUnit
particle sizeaaaaaaaaaa
Login to view more

Abstract

The invention relates to a macromolecule separation microporous membrane and a preparation method thereof, in particular to a preparation method of modified fiber powder / polymer mixed microporous membrane. The method provided by the invention includes the following steps: the surface of the fiber powder is cleaned and carved; the surface-carved fiber powders, polymer, various additives and solutions are combined to prepare membrane casting liquid, and then the membrane casting liquid is put onto a glass plate for membrane-shaving or spanning and then the liquid membrane is gelatinized into membrane in the coagulation bath process, and finally the membrane is dipped in membrane-dipping liquid and then is dried. The invention can prepare the polymer microporous membrane which has low cost, high strength and better capability through adding various fiber powders into the membrane preparation liquid and changing process conditions.

Description

technical field [0001] The invention relates to a polymer separation microporous membrane and a preparation method thereof, in particular to a preparation method of a performance-improved fiber powder / polymer blended microporous membrane. Background technique [0002] As a new type of high separation, concentration and purification technology, the membrane separation process has developed rapidly in the past 20 years and has been widely used in various industrial fields and scientific research. It has become an industrial gas separation, aqueous solution separation, chemical product It is an important process for the separation and purification of biochemical products. Separation membrane is the starting point and core of membrane separation technology, and it is also the direction and focus of membrane separation technology research and development. Separation membrane materials are mostly polymers, mainly polyamides, cellulose, polyolefins, polysulfones, polyvinylidene fl...

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

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): B01D67/00
Inventor 左丹英徐卫林崔卫钢刘晓洪邹汉涛
Owner WUHAN TEXTILE UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap