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A kind of biodegradable waterborne polyurethane warp yarn sizing size

A water-based polyurethane and warp sizing technology, which is applied in fiber treatment, textiles and papermaking, fiber types, etc., can solve the problems of poor adhesion of synthetic fibers, strong hygroscopicity and re-adhesion, and difficult desizing wastewater, etc., and achieve elongation at break Good, improve mutual contact and diffusion, weaken the effect of instability

Active Publication Date: 2021-05-25
金莎
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the commonly used warp yarn materials include starch, PVA, acrylic acid and acrylamide, but starch has poor adhesion to synthetic fibers and is troublesome in pulping; PVA is easy to regenerate hairiness during use, and the cooking time Long, difficult to degrade, difficult to desizing, desizing waste water is not easy to handle, causing environmental pollution; acrylic is easy to cause environmental pollution and high price; acrylamide is widely used in acrylic size, its hygroscopicity is strong Serious, can only be used as auxiliary slurry

Method used

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  • A kind of biodegradable waterborne polyurethane warp yarn sizing size
  • A kind of biodegradable waterborne polyurethane warp yarn sizing size

Examples

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Effect test

preparation example Construction

[0028] The raw materials for the preparation of polyester polyols include alcohols and acids. In one embodiment, the alcohols are selected from ethylene glycol, diethylene glycol, 1,2-propylene glycol, 1,4-butanediol, neopentyl Diol, 2-methylpropanediol (MPD), 1,6-hexanediol, trimethylolpropane, glycerol, 1,3-butanediol, 1,3-propanediol, 1,5-pentanediol Alcohol, 3-methyl-1,5-pentanediol, 2,4-diethyl-1,5-pentanediol, 2,2,4-trimethyl-1,3-pentanediol, a Dipropylene glycol, 1,4-dimethylolcyclohexane, 1,4-cyclohexanediol, hydroxypivalate, 2-butyl-2-ethyl-1,3- Any one or combination of propylene glycol, 2-ethyl-1,3-hexanediol, dodecanediol, dodecanecycloalkanediol, and tricyclic 12-carbon primary hydroxydiol.

[0029] In one embodiment, the acid is selected from the group consisting of malonic acid, succinic acid, glutaric acid, adipic acid, pimelic acid, suberic acid, azelaic acid, sebacic acid, terephthalic acid, Any one or a combination of phthalic acid, phthalic acid, phthalic...

Embodiment 1

[0097] Embodiment 1 of the present invention provides a biodegradable water-based polyurethane warp yarn sizing size, in parts by weight, its preparation raw materials include 110 parts of polyols, 45 parts of diisocyanates, 10 parts of carboxylic acids containing dihydroxy groups and 8 parts of Diamines with ring structure;

[0098] The polyol is selected from polyester polyol and polyether polyol, the weight ratio of polyester polyol and polyether polyol is 5:1; the hydroxyl value of the polyether polyol is 105-110 mg KOH / g, polyether polyol The polyol has a viscosity of 2300-2800 mPa·s at 25°C; the polyester polyol has a hydroxyl value of 55-60 mg KOH / g, and is solid or has a viscosity of 4500-5500 mPa·s at 25°C;

[0099] The polyester polyols are selected from aliphatic polyols and aromatic polyols, and the weight ratio of aliphatic polyols and aromatic polyols is 2:1; the aliphatic polyols are based on adipic acid-diethylene glycol- The polyester polyol of 1,4 butanediol...

Embodiment 2

[0110] The implementation mode of Example 2 of the present invention is the same as that of Example 1, except that, in parts by weight, its preparation raw materials include 150 parts of polyols, 60 parts of diisocyanates, 18 parts of carboxylic acids containing dihydroxyl groups, 12 parts of Diamine with ring structure, 520 parts of water, 60 parts of diluent, 0.2 part of defoamer and 10 parts of neutralizer.

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Abstract

The present invention relates to the technical field of sizing, and more particularly, the present invention relates to a biodegradable water-based polyurethane warp yarn sizing sizing and a preparation method thereof. The first aspect of the present invention provides a biodegradable water-based polyurethane warp yarn sizing size, in parts by weight, the preparation raw materials include 50-150 parts of polyol, 20-60 parts of diisocyanate, 6-18 parts of dihydroxy The carboxylic acid and the diamine containing 4-12 parts of cyclic structure, wherein the hydroxyl value of the polyol is 50-130 mg KOH / g.

Description

technical field [0001] The invention relates to the technical field of sizing, and more specifically, the invention relates to a biodegradable water-based polyurethane warp sizing sizing and a preparation method thereof. Background technique [0002] In the weaving process, spinning is divided into warp yarn and weft yarn according to the direction. In the process of preparation and processing, if there is no size treatment, the protruding hairiness will cause insufficient cohesion between fibers, and the warp yarns will stick and entangle with each other during weaving; Under the action of mechanical force, the yarn body will fluff, making the warp yarns stick to each other, resulting in unclear opening; and it cannot withstand the repeated stretching and tension caused by the movement of various mechanisms of the loom during the weaving process; in addition, the raw yarn has a low moisture content, The surface is not smooth and has poor elasticity. [0003] After the size...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M15/572C08G18/12C08G18/66C08G18/34C08G18/32
CPCC08G18/12C08G18/348C08G18/6625D06M15/572D06M2200/40C08G18/3234C08G18/3246
Inventor 金莎
Owner 金莎
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