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A method for improving the adhesive formula for sizing by utilizing ammonium dihydrogen phosphate and polyurethane

A technology of ammonium dihydrogen phosphate and polyurethane, applied in the direction of graft polymer adhesives, adhesive types, non-polymer adhesive additives, etc., can solve the problems of time-consuming, small improvement in adhesion performance, and pollution environment and other issues to achieve the effect of enhancing adhesion and improving permeability

Active Publication Date: 2017-06-20
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such as the Chinese publication "Macromolecular Materials Science and Engineering", the publication date is August 2009, the title of the article is the texture structure and performance of the phosphate starch / polyacrylate blend film. Supplemented with polyacrylate size to improve the flexibility of the size film, the disadvantage is that only phosphate starch supplemented with acrylic polyacrylate to improve the flexibility of the size film still cannot meet the requirements of the warp yarn during weaving. The requirements of surface size film flexibility, such as the Chinese publication "Cotton Textile Technology", the date of publication in November 2010, the title of the article is the study of maleic anhydride esterified acrylate grafted starch size, and this document introduces a The method of utilizing maleic anhydride to esterify acrylate grafted starch to improve the flexibility of the size film has the disadvantages that the starch grafting process is long, time-consuming, and energy-consuming, such as Chinese Patent Publication No. CN102329437A, disclosed On January 25, 2012, the name of the invention was a degradable starch composite slurry. The application disclosed a slurry compounded with plant starch, acetylated distarch phosphate, polyacrylic acid, starch and PVA. The disadvantage is that although the toughness of the size film is increased, the PVA cannot be degraded quickly after desizing and pollutes the environment.
Such as China's public publication "Cotton Textile Technology", the publication date was July 2012, and the title of the article is the modification of starch size by water-based polyurethane. This document has explained that adding water-based polyurethane components to starch size can make adhesion The strength is improved, and the mechanical properties of the size film are improved. The disadvantage is that the improvement of the performance of the size film by adding water-based polyurethane still cannot satisfy the adhesion of the size to the yarn.
Chinese Patent Publication No. CN103923297A, published on July 16, 2014, the name of the invention is a kind of water-based polyurethane for toughening starch size film and its preparation method and application. The toughened polyurethane synthesis method solves the hard and brittle characteristics of the starch film after starch sizing and film formation. Due to the use of polyurethane, the adhesion performance of the mixed slurry of starch and polyurethane to fibers is improved. The disadvantage of the disclosed polyurethane is that it is mainly The applicable object is acid-thinned starch, and the adhesion performance of the mixed slurry of starch and polyurethane in this technical scheme is slightly improved

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

[0012] Accurately weigh 30g of phosphate ester starch and 30g of acrylate solid slurry with an electronic balance and place them at the bottom of a 1L container. At the same time, weigh 1g of ammonium dihydrogen phosphate solid and 1g of polyurethane solution into the container, and add water to the container to make the phosphate ester. The total weight of starch, acrylate, ammonium dihydrogen phosphate, polyurethane and water reaches 1kg, stir the solution evenly, place the container in a 100°C water bath to heat, and use a stirrer to stir the mixed liquid in the container at the stirring speed. Set at 300 rpm and stir for 20 minutes. When the adhesive is completely gelatinized, stop stirring, seal the container with a film, and continue to cook the slurry in a water bath at 95-100°C for 40 minutes. Prepare the improved adhesive for sizing, then wind the prepared cotton roving on a special sizing rack, immerse the sizing rack in the adhesive for sizing, take it out after 5 mi...

Embodiment 2

[0014] Accurately weigh 50g of phosphate ester starch and 50g of acrylate solid slurry with an electronic balance and place it at the bottom of a 1L container. At the same time, weigh 10g of ammonium dihydrogen phosphate solid and 10g of polyurethane solution into the container, and add water to the container to make the phosphate ester. The total weight of starch, acrylate, ammonium dihydrogen phosphate, polyurethane and water reaches 1kg, stir the solution evenly, place the container in a 100°C water bath to heat, and use a stirrer to stir the mixed liquid in the container at the stirring speed. Set at 300 rpm and stir for 20 minutes. When the adhesive is completely gelatinized, stop stirring, seal the container with a film, and continue to cook the slurry in a water bath at 95-100°C for 40 minutes. Prepare the improved adhesive for sizing, then wind the prepared cotton roving on a special sizing rack, immerse the sizing rack in the adhesive for sizing, take it out after 5 mi...

Embodiment 3

[0016] Accurately weigh 40g of phosphate ester starch and 40g of acrylate solid slurry with an electronic balance and place it at the bottom of a 1L container. At the same time, weigh 5g of ammonium dihydrogen phosphate solid and 5g of polyurethane solution into the container, and add water to the container to make the phosphate ester. The total weight of starch, acrylate, ammonium dihydrogen phosphate, polyurethane and water reaches 1kg, stir the solution evenly, place the container in a 100°C water bath to heat, and use a stirrer to stir the mixed liquid in the container at the stirring speed. Set at 300 rpm and stir for 20 minutes. When the adhesive is completely gelatinized, stop stirring, seal the container with a film, and continue to cook the slurry in a water bath at 95-100°C for 40 minutes. Prepare the improved adhesive for sizing, then wind the prepared cotton roving on a special sizing rack, immerse the sizing rack in the adhesive for sizing, take it out after 5 minu...

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 relates to a method for improving an adhesive formula used for sizing by utilizing ammonium dihydrogen phosphate and polyurethane, belonging to the field of textile processing. The method is characterized in that ammonium dihydrogen phosphate and polyurethane are added to the adhesive formula used for sizing, which is formed by phosphate starch, acrylate and water, wherein the mass of the phosphate starch is 3-5% of the total mass of the phosphate starch, acrylate, ammonium dihydrogen phosphate, polyurethane and water; the mass of acrylate is 3-5% of the total mass of the phosphate starch, acrylate, ammonium dihydrogen phosphate, polyurethane and water; the mass of ammonium dihydrogen phosphate is 0.1-1% of the total mass of the phosphate starch, acrylate, ammonium dihydrogen phosphate, polyurethane and water; and the mass of polyurethane is 0.1-1% of the total mass of the phosphate starch, acrylate, ammonium dihydrogen phosphate, polyurethane and water. The method has the beneficial effects that the permeability of a sizing mixture and the yarn surface coating property of an adhesive used for sizing can be obviously improved after ammonium dihydrogen phosphate and polyurethane are added, thus enhancing the properties of sizing films.

Description

technical field [0001] The invention relates to a method for improving the formulation of a binder for sizing by utilizing ammonium dihydrogen phosphate and polyurethane, and belongs to the technical field of textile processing. Background technique [0002] During weaving, the action of the warp on the heald frame will generate about 4000 reciprocating movements from the warp beam to the weaving mouth. In this process, the role of the binder to protect the performance of the warp yarn is to increase the strength and reduce the hairiness. The three types of adhesives commonly used in the textile processing industry are: starch, acrylic and polyvinyl alcohol. The properties of the binder play an important role in the properties of the warp yarn after padding the binder. Therefore, in order to protect the warp yarns, the warp yarns are padded with adhesives. The protection of the warp yarns by the adhesives mainly comes from two aspects: one is that the adhesives penetrate i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J151/02C09J175/04C09J11/04
Inventor 曹根阳盛丹刘欣徐卫林刘菁
Owner WUHAN TEXTILE UNIV