CN105133080A - Polytetrafluoroethylene electrostatic spinning solution - Google Patents
Polytetrafluoroethylene electrostatic spinning solution Download PDFInfo
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- CN105133080A CN105133080A CN201510675467.0A CN201510675467A CN105133080A CN 105133080 A CN105133080 A CN 105133080A CN 201510675467 A CN201510675467 A CN 201510675467A CN 105133080 A CN105133080 A CN 105133080A
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- polytetrafluoroethylene
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- spinning solution
- polyvinyl alcohol
- electrostatic spinning
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Abstract
The invention relates to a polytetrafluoroethylene electrostatic spinning solution which is characterized by being composed of a water solution of polytetrafluoroethylene, a water solution of polyvinyl alcohol and a water solution of boric acid. A preparing method of the solution includes the steps that polytetrafluoroethylene water emulsion sold on the market and a polyvinyl alcohol water solution are mixed according to the preset share, a small amount of boric acid solution is dropwise added and evenly stirred, and the polytetrafluoroethylene electrostatic spinning solution is obtained, wherein the polyvinyl alcohol polymerization degree is 1700, the alcoholysis degree is 88%, and the total solubility of the spinning solution is 40%-45%. By the adoption of the spinning solution, electrostatic spinning can be conducted smoothly when the mass ratio of the polyvinyl alcohol to the polytetrafluoroethylene is only 10 to 90, the fiber uniformity is good, and polytetrafluoroethylene superfine fiber microporous membranes can be obtained successfully after high-temperature calcination.
Description
Technical field
The present invention relates to a kind of electrostatic spinning liquid, a kind of electrostatic spinning solution preparing polyfluortetraethylenanofibre nanofibre membrane is particularly provided, belongs to textile technology field.
Technical background
Along with the continuous quickening of countries in the world process of industrialization, air pollution, water pollutions are day by day serious, destroy the ecological balance, badly influence the health of the mankind.Such as the PM2.5 particle, oxynitrides, hydrocarbon etc. of industrial furnace discharge, and industry is along with growth in the living standard, the purity level of people to air and water requires more and more higher, and high-efficiency air filtering material and liquid filtering microporous membrane material are researched and developed most important.
Polytetrafluoroethylene (PTFE) is due to its serviceability temperature scope wide (-250 ~ 260 DEG C), have numerous fine quality such as electric insulating quality, resistant of high or low temperature that resistance to chemical attack and weatherability, coefficient of friction are low, excellent, polytetrafluoroethylporous porous membrane is widely used (Chinese patent CN103272497A, CN103007788A) in air filtration and water filtration simultaneously.At present, the processing of microporous teflon membran mainly contains three routes, and one is add pore former in polytetrafluoroethylene (PTFE), the eccysis of pore former heating water is gone (US Patent No. PNo.4,863,604) after polytetrafluoroethylene (PTFE) being made film again.Two is adopt the method for biaxial tension to produce, polytetrafluorethylepowder powder is paste-extruded, calendering after, first longitudinal stretching obtains non-clinkering zone, then cross directional stretch, form the fenestral fabric (Chinese patent CN1042498C, microporous teflon membran and manufacture method) of inclination.Three is adopt method of electrostatic spinning, by polytetrafluoroethylene (PTFE) and the polymer such as polyvinyl alcohol, polyoxyethylene spinning-aid agent mixed preparing spinning solution, electrostatic spinning forms composite micro porous film, carry out polymer such as sintering removal polyvinyl alcohol, polyoxyethylene etc. again and form pure microporous teflon membran (Chinese patent CN101530750A, the preparation method of microporous teflon membran).Static Spinning develops a kind of superfine fibre microporous barrier preparation method very rapidly at present.But compared with common plastics, polytetrafluoroethylene (PTFE) is dissolved in all solvents hardly and is difficult to melting, is only slightly dissolved in full alkane (about 0.1g/100g) more than 300 DEG C, makes polytetrafluoroethylene (PTFE) difficulty in spinning.A few patents and bibliographical information is only had to adopt electrostatic spinning technique to prepare polytetrafluoroethylsuperfine superfine fiber microporous barrier at present, and in existing report, polymer spinning-aid agent large usage quantity (spinning-aid agent will be removed after high-temperature calcination) in spinning solution, usually 20: 80 are not less than with the mass ratio of poly-four ethene, cause the row yielding of polytetrafluoroethylene fibre perforated membrane lower, the problem that production efficiency is not high.
Summary of the invention
The present invention relates to a kind of electrostatic spinning liquid for the production of polytetrafluoroethylsuperfine superfine fiber film, solve the existing problem that in spinning solution, polymer spinning-aid agent consumption is high when preparing Static Spinning polytetrafluoroethylsuperfine superfine fiber porous membrane.
The technical solution adopted in the present invention, a kind of electrostatic spinning solution is provided, it is characterized by and be made up of polytetrafluoroethylene (PTFE), pulullan polysaccharide, boron aqueous acid, calculate in mass ratio between polytetrafluoroethylene (PTFE), pulullan polysaccharide, boric acid three in described spinning solution, share is as follows:
(1) polytetrafluoroethylene (PTFE) 85 ~ 95
(2) pulullan polysaccharide 5 ~ 15
(3) boric acid 0.005 ~ 0.015
Described pulullan polysaccharide mean molecule quantity is 8 ~ 130,000; Described spinning solution total soluble matters is 40 ~ 45%.
Pulullan polysaccharide is a kind of water-soluble cement polysaccharide linear polymer, and finished product is white granular solid, and because it has good film forming, fibroblast peacekeeping thickening characteristic, being widely used in the fields such as medicine, food, chemical fibre, is a kind of good additive.
The preparation of described polytetrafluoroethylene (PTFE) electrostatic spinning solution comprises following step:
(1) pulullan polysaccharide solution
Take pulullan polysaccharide powder and the deionized water of certain mass, poured into by pulullan polysaccharide powder in the wide-mouth bottle of dress deionized water, be placed on magnetic stirring apparatus and stir 60 minutes, allotting concentration is 15 ~ 18% pulullan polysaccharide aqueous solution;
(3) BAS preparation
Taking boric acid powder and the deionized water of certain mass, boric acid is joined in the beaker containing deionized water, stir gently with glass bar, to dissolving completely, being mixed with 4 ~ 5% BASs;
(4) spinning solution preparation
The polytetrafluoroethylene (PTFE) aqueous emulsion of commercially available solid content 60% mixed by a certain percentage with the pulullan polysaccharide solution prepared, then drip a little BAS, being made into described total concentration is spinning solution between 40 ~ 45%.
Described spinning solution is the spinning property utilizing the complexing of pulullan polysaccharide and boric acid to improve spinning solution, its mechanism of action is in pulullan polysaccharide structure containing a large amount of hydroxyls, complexing forms cross-linked network easily and between boric acid, in addition, although pulullan polysaccharide is linear polymer, but its structure space volume steric hindrance is larger, obvious to solution thickening effect after complexing, the viscosity of polytetrafluoroethyl-ne aqueous solution under the pulullan polysaccharide adding equal in quality mark can be significantly improved, thus decrease the use amount of spinning-aid agent, improve row yielding and the production efficiency of polytetrafluoroethylene fibre perforated membrane.Utilize this spinning solution, pulullan polysaccharide and polytetrafluoroethylene (PTFE) mass ratio only 5: 95 time just can carry out electrostatic spinning smoothly, and Fiber Uniformity is good, successfully can obtain polytetrafluoroethylsuperfine superfine fiber microporous barrier after high-temperature calcination.
Picture and text simply describe
Fig. 1 is the polytetrafluoroethylene (PTFE)/pulullan polysaccharide/boric acid composite fibre microporous barrier stereoscan photograph adopting example 1 spinning solution Static Spinning to produce;
Fig. 2 is the pure polytetrafluoroethylsuperfine superfine fiber microporous barrier stereoscan photograph obtained after 390 DEG C of sintering.
Detailed description of the invention
Below by embodiment, further describe its inventive features.
Embodiment 1:
Each component of spinning solution, calculates share as follows in mass ratio:
(1) polytetrafluoroethylene (PTFE) 95
(2) pulullan polysaccharide 5
(3) boric acid 0.015
Described pulullan polysaccharide mean molecule quantity is 130,000; Described spinning solution total concentration is 45%.
Embodiment 2:
Each component of spinning solution, calculates share as follows in mass ratio:
(1) polytetrafluoroethylene (PTFE) 90
(2) pulullan polysaccharide 10
(3) boric acid 0.01
Described pulullan polysaccharide mean molecule quantity is 100,000; Described spinning solution total concentration is 43%.
Embodiment 3:
Each component of spinning solution, calculates share as follows in mass ratio:
(1) polytetrafluoroethylene (PTFE) 85
(2) pulullan polysaccharide 15
(3) boric acid 0.0085
Described pulullan polysaccharide mean molecule quantity is 80,000; Described spinning solution total concentration is 42%.
Embodiment 4:
Each component of spinning solution, calculates share as follows in mass ratio:
(1) polytetrafluoroethylene (PTFE) 85
(2) pulullan polysaccharide 15
(3) boric acid 0.005
Described pulullan polysaccharide mean molecule quantity is 110,000; Described spinning solution total concentration is 40%.
Claims (1)
1. a polytetrafluoroethylene (PTFE) electrostatic spinning solution, is characterized by and be made up of polytetrafluoroethylene (PTFE), polyvinyl alcohol, boron aqueous acid, and calculate in mass ratio between polytetrafluoroethylene (PTFE), polyvinyl alcohol, boric acid three in described spinning solution, share is as follows:
(1) polytetrafluoroethylene (PTFE) 80 ~ 90
(2) polyvinyl alcohol 10 ~ 20
(3) boric acid 0.01 ~ 0.03
The described polyvinyl alcohol degree of polymerization is 1700, and alcoholysis degree is 88%, and described spinning solution total soluble matters is 40 ~ 45%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510675467.0A CN105133080A (en) | 2015-10-16 | 2015-10-16 | Polytetrafluoroethylene electrostatic spinning solution |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510675467.0A CN105133080A (en) | 2015-10-16 | 2015-10-16 | Polytetrafluoroethylene electrostatic spinning solution |
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| CN105133080A true CN105133080A (en) | 2015-12-09 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105648576A (en) * | 2016-04-06 | 2016-06-08 | 龙岩紫荆创新研究院 | PTFE/PVA (polytetrafluoroethylene/polyvinyl alcohol) sea island fibers and preparation method thereof |
| CN106637591A (en) * | 2016-08-31 | 2017-05-10 | 浙江兆新织造有限公司 | Antibacterial skin-smoothing lining with natural faint scent |
| CN108570768A (en) * | 2018-05-14 | 2018-09-25 | 上海城市水资源开发利用国家工程中心有限公司 | A kind of method and apparatus preparing compound antibacterial nano fibrous membrane |
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| JP2002155183A (en) * | 2000-11-20 | 2002-05-28 | Kuraray Co Ltd | Thermoplastic polyvinyl alcohol composition having heat resistance, fiber containing the composition |
| CN101530750A (en) * | 2009-04-20 | 2009-09-16 | 浙江理工大学 | Preparation method of polytetrafluoroethylene superfine fiber porous membrane |
| CN101994161A (en) * | 2009-08-25 | 2011-03-30 | 东丽纤维研究所（中国）有限公司 | Method for preparing polytetrafluoroethylene superfine fiber |
| CN102282301A (en) * | 2009-01-16 | 2011-12-14 | Zeus工业品公司 | Electrospinning of ptfe with high viscosity materials |
| CN104963098A (en) * | 2015-06-29 | 2015-10-07 | 天津工业大学 | Method for preparing electrostatic spinning perfluocarbon polymer nanofiber membrane |
-
2015
- 2015-10-16 CN CN201510675467.0A patent/CN105133080A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002155183A (en) * | 2000-11-20 | 2002-05-28 | Kuraray Co Ltd | Thermoplastic polyvinyl alcohol composition having heat resistance, fiber containing the composition |
| CN102282301A (en) * | 2009-01-16 | 2011-12-14 | Zeus工业品公司 | Electrospinning of ptfe with high viscosity materials |
| CN101530750A (en) * | 2009-04-20 | 2009-09-16 | 浙江理工大学 | Preparation method of polytetrafluoroethylene superfine fiber porous membrane |
| CN101994161A (en) * | 2009-08-25 | 2011-03-30 | 东丽纤维研究所（中国）有限公司 | Method for preparing polytetrafluoroethylene superfine fiber |
| CN104963098A (en) * | 2015-06-29 | 2015-10-07 | 天津工业大学 | Method for preparing electrostatic spinning perfluocarbon polymer nanofiber membrane |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105648576A (en) * | 2016-04-06 | 2016-06-08 | 龙岩紫荆创新研究院 | PTFE/PVA (polytetrafluoroethylene/polyvinyl alcohol) sea island fibers and preparation method thereof |
| CN105648576B (en) * | 2016-04-06 | 2018-05-25 | 龙岩紫荆创新研究院 | A kind of PTFE/PVA sea-island fibres and preparation method thereof |
| CN106637591A (en) * | 2016-08-31 | 2017-05-10 | 浙江兆新织造有限公司 | Antibacterial skin-smoothing lining with natural faint scent |
| CN108570768A (en) * | 2018-05-14 | 2018-09-25 | 上海城市水资源开发利用国家工程中心有限公司 | A kind of method and apparatus preparing compound antibacterial nano fibrous membrane |
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