A kind of preparation method of water-soluble nonwoven fabric based on polyvinyl alcohol and polyethylene oxide

A polyoxyethylene and polyvinyl alcohol technology, applied in the field of textile and chemical fiber, can solve the problems of high cost, pollution, long process route, etc., and achieve the effect of improving strength and noodle shop, improving macroscopic density, and ensuring mechanical properties.

Active Publication Date: 2018-08-31
大连天马可溶制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

PVA short fibers are generally prepared by wet spinning, which either uses sodium sulfate as a coagulant or sodium hydroxide as a coagulant or dimethylformamide as a coagulant for molding. These methods have obvious pollution and process routes. long, high cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Washing and plasticizing polyvinyl alcohol at 40° C. for 6 hours with demineralized water with a total hardness of less than 0.03 mmol / L to obtain water-plasticized polyvinyl alcohol with an acetate content of less than 0.5 percent and a water content of 55 percent (mass fraction). Water-plasticized polyvinyl alcohol, allyl polyethylene glycol with a molecular weight of 1200, and catalyst cerium nitrate were added to the screw extruder at a mass ratio of 73:25:2, and the online melting reaction was carried out at 98°C. Extruded in a screw extruder, sent to a 65°C water bath for water washing, hot air drying after water washing, and then pelletized to obtain polyvinyl alcohol grafted polyethylene glycol copolymer I (PVA-g-PEG I).

Embodiment 2

[0029] Washing and plasticizing polyvinyl alcohol at 45° C. for 6 hours with demineralized water with a total hardness of less than 0.03 mmol / L to obtain water-plasticized polyvinyl alcohol with an acetate content of less than 0.5 percent and a water content of 55 percent (mass fraction). Water-plasticized polyvinyl alcohol, allyl polyethylene glycol with a molecular weight of 2400, and catalyst cerium nitrate were added to the screw extruder at a mass ratio of 84:15:1, and the online melting reaction was carried out at 105°C. Extruded in a screw extruder, sent to a 65°C water bath for water washing, hot air drying after water washing, and then pelletized to obtain polyvinyl alcohol grafted polyethylene glycol copolymer II (PVA-g-PEG II).

Embodiment 3

[0031] Washing and plasticizing polyvinyl alcohol at 50° C. for 6 hours with demineralized water with a total hardness of less than 0.03 mmol / L to obtain water-plasticized polyvinyl alcohol with an acetate content of less than 0.5 percent and a water content of 55 percent (mass fraction). Add water-plasticized polyvinyl alcohol, allyl polyethylene glycol with a molecular weight of 4000, and catalyst cerium nitrate into the screw extruder at a mass ratio of 78.5:20:1.5, and conduct an online melting reaction at 98°C. Extruded in a screw extruder, sent to a 70°C water bath for water washing, hot air drying after water washing, and then pelletized to obtain polyvinyl alcohol grafted polyethylene glycol copolymer III (PVA-g-PEG III).

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Abstract

The invention relates to a preparation method of a water-soluble non-woven fabric based on polyvinyl alcohol and polyethylene oxide and belongs to the technical field of textile chemical fibers. The high-fluffiness water-soluble non-woven fabric with a three-leaf structure is prepared through commixing and abnormal-shape spinning of the polyvinyl alcohol and the polyethylene oxide, online net forming and hot rolling. The non-woven fabric can be applied to the fields of clothing and home textiles, medical treatment and health care and the like. The preparation method has the advantages of simplicity, no pollution, low cost, wide applicable range and high application value.

Description

technical field [0001] The invention relates to a method for preparing a water-soluble nonwoven fabric based on polyvinyl alcohol and polyethylene oxide, and belongs to the technical field of textile chemical fibers. Background technique [0002] Water-soluble nonwoven fabric is a new type of disposable nonwoven fabric that can be quickly dissolved in hot water at a certain temperature (generally 40-95°C). Water-soluble nonwoven fabric is a kind of green environmental protection product. Its products and their composite products have broad application prospects in medical care, nursing protection, surgery, disease prevention and treatment, home textiles, and clothing. [0003] The water-soluble polyvinyl alcohol (PVA) nonwoven fabric has excellent hygroscopicity, and the medical shielding material made of it has excellent wearing comfort, so that the shielding performance and comfort performance of the product are better unified. Water-soluble PVA nonwovens have the proper...

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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Patent Type & Authority Patents(China)
IPC IPC(8): D04H3/009D04H3/08D01D5/08D01D5/253D01D5/16D01D10/02C08G81/02
CPCC08G81/025D01D5/08D01D5/16D01D5/253D01D10/02D04H3/009D04H3/08
Inventor 郭静刘闻徐德增刘建为
Owner 大连天马可溶制品有限公司
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