Preparation method for PVDF porous nanofiber membrane

A nanofiber membrane, aqueous solution technology, applied in textiles, papermaking, non-woven fabrics, etc., can solve the problems of PVDF porous nanofiber membrane solution corrosion resistance, film-forming interface compatibility is not ideal, and achieve a good interface. Compatibility, good film-forming effect

Inactive Publication Date: 2014-03-26
CHANGSHU LIYUAN MEMBRANE TECH
View PDF3 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, PVDF porous nanofiber membranes are not ideal in solution corrosion resistance, film formation and interfacial compatibility.

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] A preparation method of PVDF porous nanofibrous membrane, comprising the steps of:

[0014] 1) Add 1g / L alkyl alcohol amide polyoxyethylene ether, 3g / L lithium perchlorate, 2g / L acetone, 2g / L lithium metaborate, 2g / L tetramethylurea, 2g / L lithium oxalate to the aqueous solution , 9g / L single-walled carbon nanotubes, 1g / L lithium lactate, 3g / L lithium citrate, 60g / L polyvinylidene fluoride, 1g / L vinyltrimethoxysilane, 4g / L lithium phosphate, 1g / L Methyl ethyl acetone, 2g / L lithium carbonate, 3g / L dimethyl sulfoxide, 1g / L dilithium silicate, 1g / L hexafluoroisopropanol, 1g / L tetrahydrofuran, 2g / L lithium chloride, Heat and stir to dissolve, and cool to room temperature;

[0015] 2) Then add 15g / L polyvinylpyrrolidone, stir and dissolve to obtain a spinning solution;

[0016] 3) The obtained spinning solution is subjected to electrospinning, the temperature is room temperature, and the relative humidity is 65%. The spinning solution is input to the nozzle with a heating j...

Embodiment 2

[0019] A preparation method of PVDF porous nanofibrous membrane, comprising the steps of:

[0020] 1) Add 1g / L alkyl alcohol amide polyoxyethylene ether, 3g / L lithium perchlorate, 2g / L acetone, 2g / L lithium metaborate, 2g / L tetramethylurea, 2g / L lithium oxalate to the aqueous solution , 9g / L single-walled carbon nanotubes, 1g / L lithium lactate, 3g / L lithium citrate, 90g / L polyvinylidene fluoride, 1g / L vinyltrimethoxysilane, 4g / L lithium phosphate, 1g / L Methyl ethyl acetone, 2g / L lithium carbonate, 3g / L dimethyl sulfoxide, 1g / L dilithium silicate, 1g / L hexafluoroisopropanol, 1g / L tetrahydrofuran, 2g / L lithium chloride, Heat and stir to dissolve, and cool to room temperature;

[0021] 2) Then add 25g / L polyvinylpyrrolidone, stir and dissolve to obtain a spinning solution;

[0022] 3) The obtained spinning solution is subjected to electrospinning, the temperature is room temperature, and the relative humidity is 65%. The spinning solution is input to the nozzle with a heating j...

Embodiment 3

[0025] A preparation method of PVDF porous nanofibrous membrane, comprising the steps of:

[0026] 1) Add 1g / L alkyl alcohol amide polyoxyethylene ether, 3g / L lithium perchlorate, 2g / L acetone, 2g / L lithium metaborate, 2g / L tetramethylurea, 2g / L lithium oxalate to the aqueous solution , 9g / L single-walled carbon nanotubes, 1g / L lithium lactate, 3g / L lithium citrate, 70g / L polyvinylidene fluoride, 1g / L vinyltrimethoxysilane, 4g / L lithium phosphate, 1g / L Methyl ethyl acetone, 2g / L lithium carbonate, 3g / L dimethyl sulfoxide, 1g / L dilithium silicate, 1g / L hexafluoroisopropanol, 1g / L tetrahydrofuran, 2g / L lithium chloride, Heat and stir to dissolve, and cool to room temperature;

[0027] 2) Then add 20g / L polyvinylpyrrolidone, stir and dissolve to obtain a spinning solution;

[0028] 3) The obtained spinning solution is subjected to electrospinning, the temperature is room temperature, and the relative humidity is 65%. The spinning solution is input to the nozzle with a heating j...

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

No PUM Login to view more

Abstract

The invention discloses a preparation method for a PVDF porous nanofiber membrane. The preparation method comprises the steps that (1) alkyl alcohol amine poly oxygen ethane ether, lithium perchlorate, acetone, lithium metaborate, tetramethylurea, lithium oxalate, single-walled carbon nanotubes, lithium lactate, lithium citrate, polyvinylidene fluoride, vinyl trimethoxy silane, lithium phosphate, methyl ethyl acetone, lithium carbonate, dimethyl sulfoxide, dilithium silicate, hexafluoroisopropanol, tetrahydrofuran and lithium chloride are added into a water solution, heated and stirred to be dissolved, and cooled to the room temperature; (2) then, polyvinylpyrrolidone is added and stirred to be dissolved to obtain a spinning solution; (3) electrostatic spinning is carried out on the obtained spinning solution; (4) a copper net is used as a receiver to obtain the fiber membrane, and the obtained fiber membrane is impregnated with ethyl alcohol for 3h. The PVDF porous nanofiber membrane prepared through the method has the corrosive resistance to solutions, the good membrane-forming performance and the good interfacial compatibility.

Description

technical field [0001] The invention relates to a preparation method of a PVDF porous nanofiber membrane. Background technique [0002] At present, PVDF porous nanofiber membranes are not ideal in solution corrosion resistance, film formation and interfacial compatibility. Contents of the invention [0003] The object of the present invention is to provide a method for preparing a PVDF porous nanofiber membrane, the PVDF porous nanofiber membrane prepared has solution corrosion resistance, good film-forming property and good interfacial compatibility. [0004] In order to achieve the above object, the technical solution of the present invention is to design a kind of preparation method of PVDF porous nanofiber membrane, comprising the steps: [0005] 1) Add 1g / L alkyl alcohol amide polyoxyethylene ether, 3g / L lithium perchlorate, 2g / L acetone, 2g / L lithium metaborate, 2g / L tetramethylurea, 2g / L lithium oxalate to the aqueous solution , 9g / L single-walled carbon nanotube...

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): D04H1/4318D04H1/728C08J9/40C08L27/16
Inventor 徐建林邹建良宗建青仇峰
Owner CHANGSHU LIYUAN MEMBRANE TECH
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