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Method for preparing coupling agent modified starch paste

A technology of starch size and coupling agent, which is applied in fiber processing, textiles and papermaking, etc., which can solve the problems of environmental pollution, increased production costs, and high prices, and achieve reduced environmental pollution, increased cross-linking reactions, and good storage stability Effect

Inactive Publication Date: 2008-01-09
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, PVA has two biggest disadvantages: first, it is difficult to degrade, and the mixed slurry sewage causes environmental pollution, which is a non-environmental slurry; second, it is difficult to desizing PVA with complete alcoholysis, which increases the cost of printing and dyeing processing and affects the brightness of printing and dyeing. , the above two factors are also the reasons for the domestic textile industry to explore the use of less or no PVA
The product has good water solubility, is easy to mix, and will not freeze at low temperature. It can be used for low temperature sizing, but the price is high, which greatly increases the production cost, and there are few mature products that can be used for industrialization.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Under strong stirring, weigh 7.5g of perchloric acid oxidized starch and 106g of water into a four-neck flask, mix well, add 0.4g of silicone coupling agent KH-560, slowly raise the temperature to 55°C, and stir at constant temperature for 3 hours. Add 0.5 g of sizing aid KT and 3.4 g of PVA, and slowly heat up to 95° C. to gelatinize the modified starch slurry. When the temperature reaches 95°C, start timing, and then measure the viscosity of the slurry every half an hour. When the viscosity is constant, the reaction ends, and the silicone modified starch slurry product ST-Si1 with a solid content of 10% is obtained.

Embodiment 2

[0021] Under vigorous stirring, weigh 15g of hydrogen peroxide oxidized starch and 4g of water into a four-neck flask, mix well, add 3.0g of silicone coupling agent KH-550, slowly raise the temperature to 30°C, and stir at constant temperature for 8 hours. Add 3.0 g of sizing aid KT and 15 g of PVA, and slowly heat up to 45° C. to gelatinize the modified starch slurry. When the temperature reaches 45°C, start timing, and then measure the viscosity of the slurry every half an hour. When the viscosity is constant, the reaction ends, and the silicone modified starch slurry product ST-Si2 with a solid content of 90% is obtained.

Embodiment 3

[0023] Under strong stirring, weigh 15g of potassium permanganate oxidized starch and 25g of water into a four-neck flask, mix well, add 0.15g of silicone coupling agent KH-570, slowly raise the temperature to 40°C, and stir at constant temperature for 2 hours. Then add 0.15 g of sizing aid KT and 1.5 g of PVA, and slowly heat up to 100° C. to gelatinize the modified starch slurry. When the temperature reaches 100°C, start timing, and then measure the viscosity of the slurry every half hour. When the viscosity is constant, the reaction ends, and the silicone modified starch slurry product ST-Si3 with a solid content of 40% is obtained.

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PUM

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Abstract

The invention relates to spinning starch slurry modified manufacturing technique. Its features are that it can add oxidized starch, organic silicon coupling agent, and sizing auxiliary agent at the same time to realize by one step, or fractional step method that putting oxidized starch and water into four port flask; adding organic silicon coupling agent; heating to 30-110 deg.C; holding and stirring for 40min-8h; adding sizing auxiliary agent acrylic resin and polyvinyl alcohol; heating to 45-150 deg.C to gain organic silicon modified starch slurry ST-Si. The invention can increase cross linking reaction, binding power, storage period, but reduce cost and environment pollution.

Description

technical field [0001] The invention relates to a modification preparation technology of starch size for textile use, in particular to a preparation method for modifying starch size with a coupling agent. The modified starch size has good gelatinization performance and stable size, and can replace 80% polyvinyl alcohol (PVA) size and sizing aid acrylic resin (KT) in the original formula, which reduces the cost and simultaneously sizing Excellent performance. Background technique [0002] Warp sizing is a preparatory process for weaving, and the quality of sizing directly affects loom efficiency and fabric quality. At present, the size of warp yarn sizing mainly contains polyvinyl alcohol (PVA), polyacrylic acid, starch and modified starch. Among them, PVA has the characteristics of excellent film-forming properties, adhesion, bonding strength and compatibility with other sizing materials. It was once considered to be an ideal sizing material for blended yarns and pure cott...

Claims

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Application Information

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IPC IPC(8): D06M15/11
Inventor 杨冬亚邱凤仙陈秀珍
Owner JIANGSU UNIV
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