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Special slurry for sizing warp containing polyester staple fibers

A technology for sizing polyester staple fibers and warp yarns is applied in the field of sizing used for sizing of textile warp yarns. and flexural fatigue resistance, improve the balance between penetration and coating, and increase the effect of bonding strength

Active Publication Date: 2013-01-02
徐州众恒淀粉科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these sizing auxiliaries containing inorganic particles still have problems such as excessive dust and falling objects, clogged pipes, and unclear effects of residues on subsequent processes and textile use.
In addition, the health hazards of nano-sizing additives to human body is also an unavoidable problem
[0009] It must be clear that the unique physical and chemical properties of polyester fiber itself make it difficult to absorb pulp in water-based slurry, and the sizing effect is poor
This is because the molecular structure and polarity of polyester and starch are not similar, and polyester macromolecules lack hydrophilic atomic groups, the fiber has high crystallinity and poor hygroscopicity, resulting in low sizing quality, and it is difficult to achieve reinforcement and improve wear resistance through sizing sex, reduce hairiness

Method used

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  • Special slurry for sizing warp containing polyester staple fibers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Preparation of water-based copolyether ester: Add 166 parts by weight of dimethyl terephthalate, 18.6 parts by weight of ethylene glycol, 300 parts by weight of polyethylene glycol with a relative molecular mass of 1500, and 300 parts by weight of polyethylene glycol with a relative molecular mass of 750 in the polymerization reactor. 75 parts by weight of poly(1,2-propylene glycol), 71.2 parts by weight of sodium 1,2-dihydroxy-3-propanesulfonate, 0.15 parts by weight of tetrabutyl titanate, start the stirring device, heat and mix evenly, and the reaction kettle The temperature rises to 170-180°C to melt the material and carry out the transesterification reaction. When the amount of methanol distilled out is 90% of the theoretical amount, the product is transferred to the polycondensation tank, first replaced with nitrogen for 3 times, and then gradually heated to 200-220°C, after 2 hours of continuous decompression, then at 250-260°C and React under 80-100Pa pressure f...

Embodiment 2

[0029] Preparation of water-based copolyether ester: Add 166 parts by weight of dimethyl terephthalate, 24.8 parts by weight of ethylene glycol, 360 parts by weight of polyethylene glycol with a relative molecular mass of 1500, and 360 parts by weight of polyethylene glycol with a relative molecular mass of 750 in the polymerization reactor. 45 parts by weight of poly(1,2-propylene glycol), 53.4 parts by weight of sodium 1,2-dihydroxy-3-propanesulfonate, 0.1 part by weight of tetrabutyl titanate, start the stirring device, heat and mix evenly, and the reaction kettle The temperature rises to 170-180°C to melt the material and carry out the transesterification reaction. When the amount of methanol distilled out is 90% of the theoretical amount, the product is transferred to the polycondensation tank, first replaced with nitrogen for 3 times, and then gradually heated to 200-220°C, after 2 hours of continuous decompression, then at 250-260°C and React under 80-100Pa pressure for...

Embodiment 3

[0032] Preparation of water-based copolyether ester: Add 166 parts by weight of dimethyl terephthalate, 18.6 parts by weight of ethylene glycol, 600 parts by weight of polyethylene glycol with a relative molecular mass of 2000, and 600 parts by weight of polyethylene glycol with a relative molecular mass of 500 in the polymerization reactor. 50 parts by weight of poly(1,2-propanediol), 53.4 parts by weight of sodium 1,2-dihydroxy-3-propanesulfonate, 0.2 parts by weight of tetrabutyl titanate, start the stirring device, heat and mix evenly, and the reaction kettle The temperature rises to 170-180°C to melt the material and carry out the transesterification reaction. When the amount of methanol distilled out is 90% of the theoretical amount, the product is transferred to the polycondensation tank, first replaced with nitrogen for 3 times, and then gradually heated to 200-220°C, after 2 hours of continuous decompression, then at 250-260°C and React under 80-100Pa pressure for 4 h...

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Abstract

The invention discloses starch-based special slurry for sizing a warp containing polyester staple fibers, belonging to the technical field of spinning warp sizing slurry. The starch-based special slurry comprises 10-40% of water-borne copolyether ester, 55-85% of modified starch and 2-5% of sodium carboxymethylcellulose, wherein the water-borne copolyether ester is water-soluble or water-dispersible multi-element block copolyether ester; and the modified starch comprises acidified starch, oxidized starch, carbamate starch, phosphate starch and acetate starch. The sodium carboxymethylcelluloseis modified carboxymethyl cellulose of which the carboxymethyl substitution degree is greater than or equal to 0.8. By adopting the special slurry to size a warp containing polyester staple fibers, the use of PVA (poly vinyl alcohol) slurry in the slurry formula can be remarkably reduced, and pollution of desizing wastewater on ecological environment is effectively reduced.

Description

technical field [0001] The invention relates to a special size suitable for sizing warp yarns containing polyester staple fibers, which is a starch-based compound containing water-based copolyether ester components, and belongs to the technical field of size used in textile warp yarn sizing. Background technique [0002] At present, the sizing used for warp yarn sizing containing polyester staple fibers mainly includes modified starch, polyvinyl alcohol (PVA) and polyacrylic sizing. Amylogenic powder is the most commonly used size in sizing production. It has abundant sources, relatively low price, is environmentally friendly, and is easily degraded by microorganisms. It can be desized by biological enzymes, and the desizing waste liquid has little impact on the environment. However, its sizing film is brittle and hard, and its adhesion to polyester fibers is poor, which seriously affects its use effect. [0003] In recent years, the production speed of sizing machines and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G63/688D06M15/11D06M15/507D06M101/32
Inventor 祝志峰李世安冯现民刘敏
Owner 徐州众恒淀粉科技有限公司
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