Polytetrafluoroethylene electrostatic spinning solution

A polytetrafluoroethylene and electrospinning technology, which is applied in the direction of conjugated synthetic polymer artificial filaments, etc., can solve the problem of high dosage of polymer spinning aids

Inactive Publication Date: 2015-12-09
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention relates to an electrospinning solution for producing polytetrafluoroethylene ultrafine fiber membranes, which solves the problem of high dosage of polymer spinning aids in the spinning solution when preparing electrospun polytetrafluoroethylene ultrafine fiber porous membranes question

Method used

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  • Polytetrafluoroethylene electrostatic spinning solution
  • Polytetrafluoroethylene electrostatic spinning solution

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The components of the spinning solution are calculated by mass ratio as follows:

[0025] (1) PTFE 95

[0026] (2) Pullulan 5

[0027] (3) Boric acid 0.015

[0028] The average molecular weight of the pullulan is 130,000; the total concentration of the spinning solution is 45%.

Embodiment 2

[0030] The components of the spinning solution are calculated by mass ratio as follows:

[0031] (1) PTFE 90

[0032] (2) Pullulan 10

[0033] (3) Boric acid 0.01

[0034] The average molecular weight of the pullulan is 100,000; the total concentration of the spinning solution is 43%.

Embodiment 3

[0036] The components of the spinning solution are calculated by mass ratio as follows:

[0037] (1) PTFE 85

[0038] (2) Pullulan 15

[0039] (3) Boric acid 0.0085

[0040] The average molecular weight of the pullulan is 80,000; the total concentration of the spinning solution is 42%.

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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 [0001] The invention relates to an electrostatic spinning solution, in particular to an electrostatic spinning solution for preparing polytetrafluoroethylene nanofiber membranes, and belongs to the technical field of textiles. technical background [0002] With the continuous acceleration of the industrialization process of various countries in the world, air pollution and water pollution have become more and more serious, destroying the ecological balance, and seriously affecting human health. For example, PM2.5 particles, nitrogen oxides, hydrocarbons, etc. discharged from industrial furnaces and kilns, as well as industries with the improvement of living standards, people have higher and higher requirements for the purity of air and water, high-efficiency air filtration materials and liquid filtration The research and development of microporous membrane materials is crucial. [0003] Because of its wide temperature range (-250~260℃), PTFE has many excellent qual...

Claims

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Application Information

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IPC IPC(8): D01F8/10D01F1/10
Inventor康卫民鞠敬鸽马晓敏程博闻李磊庄旭品赵义侠刘晓红乔春梅
OwnerTIANJIN POLYTECHNIC UNIV