Preparation method and application of toughening operation gauze with ultrahigh water-absorbing quality

A technology of water absorption and operation, which is applied in the direction of spinning solution preparation, absorption pad, wet spinning method, etc., can solve the problems of weak absorption, psychological burden of patients, and occurrence of static electricity, and achieve improved use performance, good water absorption performance, and toughness high effect

Inactive Publication Date: 2018-11-23
吴江康欣医用敷料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the product produced by bonding the polymer film with holes drilled to the absorbent cotton containing viscose staple fibers by thermocompression is easy to

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
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) Mix polyacrylonitrile, sodium alginate, hydroxyethyl cellulose powder and deionized water according to the mass ratio of 2:1:5:23, and after ultrasonic dispersion treatment, fully stir to form a mixed spinning solution , the frequency of ultrasonic dispersion is 20kHz, the ultrasonic power is 200W, and the ultrasonic treatment time is 30 minutes, then the mixed spinning solution is centrifuged and left to stand overnight, and the precipitate in the mixed spinning solution is removed by filtration, and set aside;

[0023] (2) Carry out vacuum defoaming of the spinning solution, the vacuum degree of vacuum defoaming is -0.08MPa, and the defoaming time is 40 minutes, then add it to the wet spinning machine, measure it through the metering pump, and press it out from the spinneret Precipitate and form fiber filaments in coagulation bath, described coagulation bath is the mixed alcohol solution of dimethylacetamide, sodium sulfate, wherein the mol ratio of dimethylacetami...

Embodiment 2

[0029] (1) Mix polyacrylonitrile, sodium alginate, hydroxyethyl cellulose powder and deionized water according to the mass ratio of 2:1:5:23, and after ultrasonic dispersion treatment, fully stir to form a mixed spinning solution , the frequency of ultrasonic dispersion is 22.5kHz, the ultrasonic power is 250W, and the ultrasonic treatment time is 35 minutes, then the mixed spinning solution is centrifuged and left to stand overnight, and the precipitate in the mixed spinning solution is removed by filtration, and set aside;

[0030] (2) Carry out vacuum defoaming of the spinning solution, the vacuum degree of vacuum defoaming is -0.09MPa, and the defoaming time is 50 minutes, then add it to the wet spinning machine, measure it through the metering pump, and press it out from the spinneret Precipitate and form fiber filaments in coagulation bath, described coagulation bath is the mixed alcohol solution of dimethylacetamide, sodium sulfate, wherein the mol ratio of dimethylaceta...

Embodiment 3

[0036](1) Mix polyacrylonitrile, sodium alginate, hydroxyethyl cellulose powder and deionized water according to the mass ratio of 2:1:5:23, and after ultrasonic dispersion treatment, fully stir to form a mixed spinning solution , the frequency of ultrasonic dispersion is 25kHz, the ultrasonic power is 300W, and the ultrasonic treatment time is 40 minutes, then the mixed spinning solution is centrifuged and left to stand overnight, and the precipitate in the mixed spinning solution is removed by filtration, and set aside;

[0037] (2) Carry out vacuum defoaming of the spinning solution, the vacuum degree of vacuum defoaming is -0.1MPa, and the defoaming time is 60 minutes, then add it to the wet spinning machine, measure it through the metering pump, and press it out from the spinneret Precipitate and form fiber filaments in coagulation bath, described coagulation bath is the mixed alcohol solution of dimethylacetamide, sodium sulfate, wherein the mol ratio of dimethylacetamide...

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
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PUM

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Abstract

The invention discloses a preparation method and application of toughening operation gauze with the ultrahigh water-absorbing quality. The method comprises the steps that polyacrylonitrile, sodium alginate, hydroxyethyl cellulose powder and deionized water are adopted to prepare mixed spinning liquid, the mixed spinning liquid is subjected to centrifugation, standing, sediment removal and vacuum defoamation, and then added into a wet spinning machine, filaments are separated out and formed in coagulating bath after the product is metered by a metering pump and extruded out by a spinning nozzle, gray fabric is obtained after stretching, shaping and spinning treatment are conducted, the obtained gray fabric is dipped into a hot water tank of an annealing, boiling and bleaching machine to besubjected to high temperature washing and modification, the modified gray fabric is dipped into the mixed liquid prepared from vinyl chloride vinyl acetate, ammonium citrate, chitosan and water to besubjected to secondary modification, and the finished product of the gauze is obtained after scutching and drying are conducted. The prepared toughening operation gauze with the ultrahigh water-absorbing quality has the good water-absorbing quality, and the high toughness, and has the good application prospect in the medical supply industry.

Description

technical field [0001] The invention relates to the technical field of medical dressings, in particular to a preparation method and application of a superabsorbent and toughened surgical gauze. Background technique [0002] Generally speaking, medical gauze refers to bleached cotton gauze and / or a product produced by bonding a perforated polymer film to absorbent cotton containing viscose staple fibers by thermocompression. The process of the aforementioned bleached cotton fabric is not only complicated, but also difficult to peel off from the injured part, which makes the patient feel pain. Although it is possible to reduce the patient's pain and make full use of its absorbency when only absorbent cotton is used, it is difficult to peel off absorbent cotton that is adhered to the injured area. The gauze formed only from cotton needs to be covered with woven or non-woven fabric on its outer surface due to its weak tensile strength. In addition, the product produced by bond...

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
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Application Information

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IPC IPC(8): D06M15/333D06M15/03D06M13/207D06M13/467D06M13/11D06M13/503D01F8/02D01F8/08D01F8/18D01D1/02D01D1/10D01D5/06D03D15/00D06B3/10D06B15/00A61L15/62A61L15/18A61L15/20A61L15/28A61L15/24D06M101/28D03D15/283
CPCA61L15/18A61L15/20A61L15/24A61L15/28A61L15/62D01D1/02D01D1/103D01D5/06D01F8/02D01F8/08D01F8/18D03D15/00D06B3/10D06B15/00D06M13/11D06M13/207D06M13/467D06M13/503D06M15/03D06M15/333A61L2300/232A61L2300/412A61L2400/04D06M2101/28D06M2101/04D06M2101/08C08L5/04C08L1/284C08L33/20
Inventor 张志荣
Owner 吴江康欣医用敷料有限公司
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