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Aliphatic aqueous polyester graft copolymer, adhesion accelerant for improving adhesion strength on terylene fibers by starch slurry, and preparation method thereof

A technology of graft copolymer and water-based polyester, which is applied in the field of aliphatic water-based polyester graft copolymer, adhesion promoter and preparation for improving the bonding strength of starch size to polyester fiber, and can solve the problem of interface damage and impact Warp reinforcement, wear resistance and hairiness reduction rate, poor toughness, etc.

Active Publication Date: 2013-01-30
西达(无锡)生物科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, even if the starch is chemically modified, the property of opposite polarity of the interface between the polyester fiber and the starch adhesive layer cannot be changed. The interface between the size adhesive layer and the polyester fiber is weak, which easily causes interface damage and cannot form Strong adhesive strength; secondly, even with some modified starch sizing, the bonding layer formed between polyester fibers is still relatively brittle and hard, with poor toughness. When deformation occurs, internal stress will inevitably be generated on the bonding interface. When the local stress exceeds the local strength, silver cracks or cracks will occur, and stress concentration will occur at the top of the crack, while the brittle and hard starch adhesive layer often forms Large internal stress and severe stress concentration, resulting in bond failure
Therefore, the bonding strength of starch and modified starch sizing to polyester fibers is generally not high, and it is difficult to effectively bond polyester fibers during the sizing process, which affects the reinforcement, wear resistance and hairiness reduction rate of warp yarns, resulting in Starch does not have high sizing quality for warp yarns containing polyester fibers

Method used

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  • Aliphatic aqueous polyester graft copolymer, adhesion accelerant for improving adhesion strength on terylene fibers by starch slurry, and preparation method thereof
  • Aliphatic aqueous polyester graft copolymer, adhesion accelerant for improving adhesion strength on terylene fibers by starch slurry, and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0054] (1) Preparation of the main chain of aliphatic water-based polyester: 118.1 parts by weight of succinic acid, 23.3 parts by weight of ethylene glycol, and 57.85 parts by weight of sodium 1,2-dihydroxy-3-propanesulfonate were added to the polymerization reactor. 31.83 parts by weight of ethylene glycol and 1 part by weight of zinc acetate were heated under nitrogen protection, and the stirring device was started immediately after the reactants in the kettle were melted. The molar ratio of succinic acid, ethylene glycol, ethylene acetal and sodium 1,2-dihydroxy-3-propanesulfonate was 1:0.375:0.3:0.325.

[0055] When the temperature rises to 130-160°C, care should be taken to control the heating rate to avoid the fractionation column head temperature exceeding 100°C. Then the temperature of the material was gradually raised to 200 °C, and the pressure in the kettle was gradually reduced to 12-20 mmHg by a decompression device, and then the reaction was stirred at 200-210 °...

Embodiment 2

[0060] (1) Preparation of the main chain of aliphatic water-based polyester: 118.1 parts by weight of succinic acid, 37.24 parts by weight of ethylene glycol, 22.53 parts by weight of ethylene glycol, 1,2-dihydroxy-3 -44.5 parts by weight of sodium propanesulfonate and 0.45 parts by weight of zinc acetate, heated under nitrogen protection, and the stirring device was started immediately after the reactants in the kettle were melted, and the reaction was controlled as in Example 1. The molar ratio of succinic acid, ethylene glycol, ethylene glycol, and sodium 1,2-dihydroxy-3-propanesulfonate is 1:0.6:0.15:0.25.

[0061]After 32 hours of reaction, the product appeared serious "climbing" phenomenon, the reaction was terminated by cooling, nitrogen was filled to eliminate the vacuum, and the linear polyester main chain of the granular aliphatic water-based polyester graft copolymer was obtained by casting and dicing. The prepared water-based linear polyester main chain structure i...

Embodiment 3

[0066] Ⅰ. Preparation of the main chain of aliphatic water-based polyester: add 146.1 parts by weight of adipic acid, 7.448 parts by weight of ethylene glycol, 50.93 parts by weight of ethylene glycol, 1,2-dihydroxy-3- 71.20 parts by weight of sodium propanesulfonate and 2.20 parts by weight of zinc acetate were heated under nitrogen protection, and the stirring device was started immediately after the reactants in the kettle were melted. The reaction was controlled as in Example 1. The molar ratio of adipic acid, ethylene glycol, ethylene acetal and sodium 1,2-dihydroxy-3-propanesulfonate was 1:0.12:0.48:0.4.

[0067] After 36 hours of reaction, the product appeared serious "climbing" phenomenon, the reaction was terminated by cooling, nitrogen was filled to eliminate the vacuum, and the linear polyester main chain of the granular aliphatic water-based polyester graft copolymer was obtained by casting and dicing. The prepared water-based linear polyester main chain structure ...

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Abstract

The present invention relates to the field of materials, especially to a slurry for textile warp sizing, and discloses an aliphatic aqueous polyester graft copolymer and a preparation method for an adhesion accelerant for improving adhesion strength on terylene fibers by a starch slurry, wherein the main chain of the graft copolymer is a random copolymer of hydrophobic polyester chain segment aliphatic dicarboxylic acid diol ester and hydrophilic polyester chain segment aliphatic dicarboxylic acid (1,2-dihydroxy-3-propylsulfonate)ester, the graft branch chain is a random copolymer of acrylamide and a vinyl carboxylate, and the adhesion accelerant comprises, by weight, 15-28% of an aliphatic aqueous polyester graft copolymer, 1-6% of a hydroxyl plasticizer, 1-8% of an amino plasticizer, and the balance of water . The preparation process comprises: firstly synthesizing an aliphatic aqueous polyester main chain, carrying out graft copolymerization of the aliphatic aqueous polyester main chain and a hydrophilic vinyl monomer, and finally dissolving plasticizers in the aqueous slurry of the graft copolymer to obtain the adhesion accelerant.

Description

technical field [0001] The invention relates to the field of materials, belongs to the technical field of preparation of sizing used for sizing of textile warp yarns, and in particular relates to an aliphatic water-based polyester graft copolymer and an aliphatic water-based polyester graft copolymer containing the copolymer for improving the adhesion of starch sizing to polyester fibers Strong adhesion promoter, this aqueous formulation containing aliphatic aqueous polyester graft copolymer can improve the sizing performance of starch sizing for polyester staple fiber-containing warp yarns. Background technique [0002] Starch and modified starch sizing is one of the most commonly used main sizing in sizing production. It is rich in source, low in price, environmentally friendly and easy to be degraded by microorganisms. Biological enzymes can be used for desizing. The negative impact is small, so it is widely used in the production of warp sizing. However, with the contin...

Claims

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Application Information

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IPC IPC(8): C08F283/02C08F220/56C08F220/06C08F222/02C08G63/688C08G63/78D06M15/21D06M15/11D06M13/148D06M13/165D06M13/432D06M101/32
Inventor 祝志峰林源杰田培善
Owner 西达(无锡)生物科技有限公司
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