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Four element complex denatured starch sizing material and its preparation method and application

A technology of composite modified starch and modified starch, which is applied in the field of size for textile processing, can solve the problems of high proportion or complete replacement, and achieve the effects of improving performance, convenient operation, and reducing labor intensity

Inactive Publication Date: 2004-03-03
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A small amount of binary modified starch has been produced in China, which partially meets the requirements of sizing. The proportion of replacing chemical size PVA is higher than that of single modified starch, but it cannot replace PVA in a high proportion or completely.
However, there are no domestic research reports on this aspect

Method used

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  • Four element complex denatured starch sizing material and its preparation method and application
  • Four element complex denatured starch sizing material and its preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0031] Add water to 1000 grams of starch to adjust the slurry to a concentration of 40%, stir continuously, heat to 35°C, adjust the pH to 7.5 to 10.0 with dilute alkali, add 80 g of sodium hypochlorite as an oxidizing agent, add dropwise for 55 minutes, add 35 g of vinyl acetate as an esterification agent, and add dropwise The time is 35 minutes, the reaction is 2 hours, and then 20 g of grafted monomer acrylic acid, 5 g of initiator potassium persulfate, and 9 g of crosslinking agent sodium trimetaphosphate are added at one time, and the reaction is carried out for 1.5 hours. During the reaction process, use dilute acid or dilute alkali to maintain the pH between 7.5 and 10.0. After the reaction, neutralize the pH to 6.5 with dilute acid, wash, dehydrate and dry to obtain the finished product.

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PUM

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Abstract

A modified size for sizing yarn is prepared from starch through oxidizing, esterifying, grafting and cross-linking for modifying it, and reaction under the action of acid or alkali and heat. Its advantages are high yarn-sizing effect and low cost.

Description

technical field [0001] A quaternary compound denatured starch size and its preparation method and application, the invention belongs to the size used for textile processing. Background technique [0002] Sizing is the key process before weaving. When sizing, the size forms a protective size film on the surface of the yarn or increases the cohesion between monofilaments to improve the wear resistance of the fabric, thereby improving the weavability of the warp yarn. The slurry should have certain adhesion, proper viscosity and viscosity stability, easy desizing and so on. Usually, one kind of slurry used alone cannot meet the process requirements, and generally several kinds of slurry should be selected and used together in proportion. [0003] Currently used size mainly contains polyvinyl alcohol (PVA) type, acrylic chemical size and natural starch and modified starch three major categories. The first two types have good sizing performance, especially for synthetic fibers...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B31/00
Inventor 顾正彪洪雁
Owner JIANGNAN UNIV
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