Polyvinylidene fluoride/polysulfonamide composite nano-fiber web and preparation method thereof

A technology of composite nanofibers and polyvinylidene fluoride, which can be used in fiber processing, spinning solution preparation, and conjugated synthetic polymer rayon filaments, etc., can solve problems such as poor UV resistance and easy breakage of amide groups. To achieve the effect of simple steps, strong operability and excellent UV resistance

Inactive Publication Date: 2018-02-09
SHANGHAI UNIV OF ENG SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the amide group on the PSA macromolecular chain is easily broken under the irradiation of ultraviolet light, the anti-ultraviolet performance is very poor.

Method used

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  • Polyvinylidene fluoride/polysulfonamide composite nano-fiber web and preparation method thereof
  • Polyvinylidene fluoride/polysulfonamide composite nano-fiber web and preparation method thereof
  • Polyvinylidene fluoride/polysulfonamide composite nano-fiber web and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] (1) Configuration of polyvinylidene fluoride spinning solution:

[0065] Prepare a mixed solvent of dimethylformamide / acetone (DMF / AC) according to a mass ratio of 7 / 3, weigh a certain amount of polyvinylidene fluoride powder and add it to the mixed solvent, mechanically stir and ultrasonically defoam to obtain a PVDF spinning solution; The content of PVDF in the PVDF spinning solution is 12wt%.

[0066] (2) Configuration of polysulfone amide spinning solution:

[0067] The 12wt% polysulfone amide spinning solution was provided by Shanghai Te Spandex Fiber Co., Ltd.

[0068] (3) Electrospinning preparation:

[0069] The above-mentioned polyvinylidene fluoride spinning solution and polysulfone amide spinning solution were mixed and stirred at a mass ratio of 7 / 3 and ultrasonically defoamed for 30 minutes; the electrospinning process was adopted, the receiving distance was set at 15 cm, and the mercury injection The pushing speed is 0.003mm / s, the electrostatic field v...

Embodiment 2

[0072] (1) Configuration of polyvinylidene fluoride spinning solution:

[0073] Prepare a mixed solvent of dimethylformamide / acetone (DMF / AC) according to a mass ratio of 7 / 3, weigh a certain amount of polyvinylidene fluoride powder and add it to the mixed solvent, mechanically stir and ultrasonically defoam to obtain a PVDF spinning solution; The content of PVDF in the PVDF spinning solution is 12wt%.

[0074] (2) Configuration of polysulfone amide spinning solution:

[0075] The 12wt% polysulfone amide spinning solution was provided by Shanghai Te Spandex Fiber Co., Ltd.

[0076] (3) Electrospinning preparation:

[0077] The above-mentioned polyvinylidene fluoride spinning solution and polysulfone amide spinning solution were mixed and stirred at a mass ratio of 5 / 5 and ultrasonically defoamed for 30 minutes; the electrospinning process was adopted, the receiving distance was set at 15 cm, and the mercury injection The pushing speed is 0.003mm / s, the electrostatic field v...

Embodiment 3

[0080] (1) Configuration of polyvinylidene fluoride spinning solution:

[0081] Prepare a mixed solvent of dimethylformamide / acetone (DMF / AC) according to a mass ratio of 7 / 3, weigh a certain amount of polyvinylidene fluoride powder and add it to the mixed solvent, mechanically stir and ultrasonically defoam to obtain a PVDF spinning solution; The content of PVDF in the PVDF spinning solution is 12wt%.

[0082] (2) Configuration of polysulfone amide spinning solution:

[0083] The 12wt% polysulfone amide spinning solution was provided by Shanghai Te Spandex Fiber Co., Ltd.

[0084] (3) Electrospinning preparation:

[0085] The above-mentioned polyvinylidene fluoride spinning solution and polysulfone amide spinning solution were mixed and stirred at a mass ratio of 3 / 7 and ultrasonically defoamed for 30 minutes; the electrospinning process was adopted, the receiving distance was set at 15 cm, and the mercury injection The pushing speed is 0.003mm / s, the electrostatic field v...

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Abstract

The invention relates to the field of nano-fiber preparation, in particular to a polyvinylidene fluoride / polysulfonamide composite nano-fiber web and a preparation method thereof. The preparation method of the polyvinylidene fluoride / polysulfonamide composite nano-fiber web comprises the steps that firstly, a PVDF spinning solution containing 10-14 wt% of polyvinylidene fluoride is prepared; secondly, the PVDF spinning solution is mixed with 10-14 wt% of PSA spinning solution, and polyvinylidene fluoride / polysulfonamide composite nano-fibers are obtained by using an electrostatic spinning technology. The preparation method of the polyvinylidene fluoride / polysulfonamide composite nano-fiber web is simple in step, high in operability, free of industrial pollution, relatively low in production cost and high in safety. The polyvinylidene fluoride / polysulfonamide composite nano-fiber web is high in crystallinity, good in hydrophilic performance and mechanical property, excellent in ultraviolet resistance, long in service life and capable of being used in the fields of protection, shielding and the like in an expanded mode.

Description

technical field [0001] The invention relates to the field of preparation of nanofibers, in particular to a polyvinylidene fluoride / polysulfone amide composite nanofiber web and a preparation method thereof. Background technique [0002] Polyvinylidene fluoride has become an important material for the preparation of ultrafiltration membranes due to its excellent chemical stability, radiation resistance, UV resistance, thermal stability and easy film formation. However, PVDF membranes are prone to shrinkage during the drying process, making the membranes made under certain conditions brittle and unusable. Secondly, PVDF membrane is a non-polar substance, so it has strong hydrophobicity. In the actual application process, due to the strong hydrophobicity of the membrane surface, organic matter is easily adsorbed on the surface, causing membrane pollution and reducing the service life of the membrane. [0003] Polysulfoneamide has excellent hydrophilicity, thermal stability, c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/728D04H1/4382D01D5/00D01F8/10D01F8/16
CPCD04H1/728D01D1/02D01D5/003D01D5/30D01F8/10D01F8/16D04H1/4382
Inventor 辛斌杰田旭陈卓明郑元生靳世鑫李玛莎王文帝徐闻龙
Owner SHANGHAI UNIV OF ENG SCI
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