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Method for preparing antibacterial polyurethane fiber

A polyurethane fiber and polyurethane technology, applied in the field of polyurethane fiber, can solve problems such as weakening the antibacterial effect, and achieve the effects of less environmental pollution, easy availability of raw materials, and low cost of raw materials

Inactive Publication Date: 2019-03-01
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method is to combine fabrics with antibacterial agents, and the antibacterial effect of antibacterial fabrics prepared in this way may gradually weaken after repeated washing

Method used

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  • Method for preparing antibacterial polyurethane fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A kind of preparation method of antibacterial polyurethane fiber of the present embodiment, described preparation method comprises the following steps:

[0019] (1) Preparation of spinning solution: Weigh 300 grams of polyurethane purchased from Tianhai Plastic Industry Co., Ltd., Hejian City, Hebei, and dissolve dimethyl diallyl ammonium chloride and polyurethane in dimethylformamide solvent at the same time , wherein the mass ratio of dimethyl diallyl ammonium chloride to polyurethane is 1:20, and it is configured as a solution with a mass concentration of 20%. Stir constantly during the dissolving process, and the dissolving time is 30 minutes, until the obtained solution is a stable liquid.

[0020] (2) Spinning of polyurethane fiber: the spinning solution prepared in step (1) is electrospun on an electrospinning machine, and the schematic diagram of the electrospinning machine device is as follows: figure 1 As shown, the spinning conditions are: voltage 6KV, jet s...

Embodiment 2

[0025] A kind of preparation method of antibacterial polyurethane fiber of the present embodiment, described preparation method comprises the following steps:

[0026] (1) Preparation of spinning solution: Weigh 300 grams of polyurethane purchased from Tianhai Plastic Industry Co., Ltd., Hejian City, Hebei, and dissolve dimethyl diallyl ammonium chloride and polyurethane in dimethylformamide solvent at the same time , wherein the mass ratio of dimethyl diallyl ammonium chloride to polyurethane is 1:24, and it is configured as a solution with a mass concentration of 30%. Stir continuously during the dissolving process, and the dissolving time is 40 min, until the prepared solution is a stable liquid.

[0027] (2) Spinning of polyurethane fiber: the spinning solution prepared in step (1) is electrospun on an electrospinning machine, and the schematic diagram of the electrospinning machine device is as follows: figure 1 As shown, the spinning conditions are: voltage 8KV, jet spe...

Embodiment 3

[0032] A kind of preparation method of antibacterial polyurethane fiber of the present embodiment, described preparation method comprises the following steps:

[0033] (1) Preparation of spinning solution: Weigh 300 grams of polyurethane purchased from Tianhai Plastic Industry Co., Ltd., Hejian City, Hebei, and dissolve dimethyl diallyl ammonium chloride and polyurethane in dimethylformamide solvent at the same time , wherein the mass ratio of dimethyl diallyl ammonium chloride to polyurethane is 1:25, and it is configured as a solution with a mass concentration of 40%. Stir continuously during the dissolving process, and the dissolving time is 60 min, until the obtained solution is a stable liquid.

[0034] (2) Spinning of polyurethane fiber: the spinning solution prepared in step (1) is electrospun on an electrospinning machine, and the schematic diagram of the electrospinning machine device is as follows: figure 1 As shown, the spinning conditions are: voltage 16KV, jet sp...

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Abstract

The invention relates to a method for preparing antibacterial polyurethane fiber. The method is characterized in that dimethyl diallyl ammonium chloride and polyurethane are simultaneously dissolved in dimethyl formamide solvent to obtain spinning solution; the spinning solution enters an electrospinning machine for electrospinning to obtain fiber; and the fiber is further subjected to washing, oiling, drying and other processes to obtain the antibacterial polyurethane fiber. The main strength properties of the antibacterial polyurethane fiber prepared by the method are close to those of commercially available polyurethane fiber, that is to say, the antibacterial polyurethane fiber is qualified. The polyurethane fiber prepared by the method is highly against candida albicans, staphylococcus aureus and escherichia coli, and after washing of 20 times, the inhibition rates of the polyurethane fiber against C. albicans, S. aureus and E. coli are still 89% or above, 90% or above and 93% orabove separately. The whole production process is simple, the production process has little pollution to the environment, the raw materials are low in cost and easy to obtain, and the method has highpromotion value.

Description

technical field [0001] The invention belongs to the technical field of polyurethane fibers, and in particular relates to a preparation method of antibacterial polyurethane fibers. Background technique [0002] Polyurethane fiber, also known as spandex, is a fiber made from polyurethane by spinning. Polyurethane fibers have the advantages of high elongation at break, high elastic recovery and high breaking strength, and are widely used in clothing, household products and other fields. Polyurethane is mainly obtained from the polyaddition reaction of diisocyanate or polyisocyanate with dihydroxy or polyhydroxy compounds. Its chemical properties are very stable, and it is difficult to graft or modify its fiber surface. The production methods of polyurethane fiber include: dry spinning method, melt spinning method and electrospinning method, etc. Among them, the electrospinning technology can make the charged polymer solution or melt flow and deform in the electrostatic field. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/94D01F1/10
CPCD01F1/103D01F6/94
Inventor 彭雄义梁永红殷国益王军粟斯伟王强蔡映杰
Owner WUHAN TEXTILE UNIV
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