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Preparation method of amphoteric starch size

A technology of amphoteric starch and sizing, which is applied in the field of preparation of amphoteric starch sizing, which can solve the problems of desizing and other problems, and achieve the effects of easy desizing, high sizing viscosity and simple process

Inactive Publication Date: 2015-11-18
刘桂芹
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

(See Zhu Zhongqiu; Jiangnan University [D]; Research on quaternary ammonium salt cationic grafted starch size; 2013) However, this kind of cationic starch will cause difficulties in desizing

Method used

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  • Preparation method of amphoteric starch size
  • Preparation method of amphoteric starch size
  • Preparation method of amphoteric starch size

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The preparation mass fraction is the acid-thinned starch (ATS) aqueous solution of 30%, the pH value of adjusting described acid-thinned starch (ATS) aqueous solution is 3.2, after heating, stirring treatment, pass into nitrogen 45min, dropwise add 12g sodium acrylate, add 18mL mass fraction 0.8% FeSO 4 ·(NH 4 ) 2 SO 4 and 15 mL mass fraction of 1.2% H 2 o 2 solution, and then reacted for 1 h under the protection of nitrogen. Then, add 3 mL of hydroquinone solution with a mass fraction of 2%, and use 1.5 mol / L NaCO 3 The solution adjusts the pH value of the reactant to 5, and then filters, vacuum-dries, pulverizes, and sieves to obtain the product. By calculation, the adhesive force of the product is 123.6N, and the desizing rate is 94.2%.

Embodiment 2

[0029] Preparation mass fraction is 30% acid-thinned starch (ATS) aqueous solution, the pH value of regulating described acid-thinned starch (ATS) aqueous solution is 3.2, through heating, stirring process, feed nitrogen 45min, drip 12g grafting monomer , the mol ratio of acryloyloxyethyltrimethylammonium chloride (DAC) to sodium acrylate in the graft monomer is 0.5:1, adding 18mL mass fraction is 0.8% FeSO 4 ·(NH 4 ) 2 SO 4 and 15 mL mass fraction of 1.2% H 2 o 2 solution, and then reacted for 1 h under the protection of nitrogen. Then, add 3 mL of hydroquinone solution with a mass fraction of 2%, and use 1.5 mol / L NaCO 3 The solution adjusts the pH value of the reactant to 5, and then filters, vacuum-dries, pulverizes, and sieves to obtain the product. By calculation, the adhesive force of the product is 125.4N, and the desizing rate is 92.2%.

[0030] like figure 1 As mentioned above, the weight loss of the product is mainly divided into three stages. The first stag...

Embodiment 3

[0032] Preparation mass fraction is 30% acid-thinned starch (ATS) aqueous solution, the pH value of regulating described acid-thinned starch (ATS) aqueous solution is 3.2, through heating, stirring process, feed nitrogen 45min, drip 12g grafting monomer , the mol ratio of acryloyloxyethyltrimethylammonium chloride (DAC) to sodium acrylate in the graft monomer is 0.8:1, adding 18mL mass fraction is 0.8% FeSO 4 ·(NH 4 ) 2 SO 4 and 15 mL mass fraction of 1.2% H 2 o 2 solution, and then reacted for 1 h under the protection of nitrogen. Then, add 3 mL of hydroquinone solution with a mass fraction of 2%, and use 1.5 mol / L NaCO 3 The solution adjusts the pH value of the reactant to 5, and then filters, vacuum-dries, pulverizes, and sieves to obtain the product. By calculation, the adhesive force of the product is 127.7N, and the desizing rate is 91.1%.

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Abstract

The invention discloses a preparation method of amphoteric starch size. The method comprises the following steps: preparing an ATS (amylomaltase-treated starch) water solution with mass fraction of 20-50%, regulating the pH value of the ATS water solution to be 3-5, carrying out heating, stirring, nitrogen pumping and other treatment processes, dropwise adding 10-20g of grafted monomer, adding Fe2<+>-H2O2 as an initiator, reacting for 1-3 hours under the protection of nitrogen, adding 1.6-5mL of hydroquinone solution with mass fraction of 2%, regulating the pH value of the reactant to be 4-7 with 1-3mol / L of NaCO3 solution and then carrying out filtering, vacuum drying, grinding, sieving and other treatment processes, thus obtaining the product, wherein the mole ratio of DAC to sodium acrylate in the grafted monomer is (0.5-2) to 1. The amphoteric starch size disclosed by the invention has the advantages of simple process, high sizing viscosity, easiness in desizing, and the like, and is mainly applied to the field of warp sizing.

Description

technical field [0001] The invention relates to a preparation method of warp yarn sizing size, in particular to a preparation method of amphoteric starch size. Background technique [0002] Starch graft copolymers have been widely used in textile warp yarn sizing, water treatment, oil field, papermaking and other fields. In the past, starch was grafted and modified, and monomeric acrylic acid, acrylamide, and acrylates were mostly used to improve the application performance of starch in textile warp yarn sizing. (such as Zhang Xiaodong, Liu Xin, Yang Songjie; Journal of Textile Science [J]; Development and application of LCA, LAT copolymerization size; 1997, 03 issue.) And these starch graft copolymers are negatively charged in water like the fiber, The adhesive layer and the fiber repel each other due to the same charge, which is not conducive to the bonding strength of the fiber. [0003] By introducing positively charged branch chains on the starch main chain, it is pos...

Claims

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Application Information

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IPC IPC(8): C08F251/00C08F220/34C08F220/06D06M15/267
Inventor 刘桂芹
Owner 刘桂芹
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