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Wool knitted fabrics shape-remembering finishing agent as well as preparation method and application thereof

A technology of wool knitted fabrics and finishing agents, which is applied in textiles and papermaking, fiber treatment, animal fibers, etc., can solve the problems of high processing temperature of finishing agents, poor shape memory finishing effect, etc. The risk of small color changes, the effect of simple processing

Inactive Publication Date: 2014-05-21
THE HONG KONG RES INST OF TEXTILES & APPAREL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a shape memory finishing agent for wool knitted fabrics and its preparation method and application in view of the defects that the existing finishing agents require relatively high processing temperature and the effect of shape memory finishing is not good.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Wool knitted fabrics shape-remembering finishing agent as well as preparation method and application thereof
  • Wool knitted fabrics shape-remembering finishing agent as well as preparation method and application thereof
  • Wool knitted fabrics shape-remembering finishing agent as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0081] 250g of polyoxypropylene triol (Mw=3000), 50g of polyoxyethylene diol (Mw=1000) was dried by vacuum heating, and then mixed with 59g of hexamethylene diisocyanate (HDI), and reacted at 88-92°C for 3 hour, then add 40 g of ethyl acetate and cool to obtain a prepolymer solution. Then 500 milliliters of mixed solvent ethanol / isopropanol (volume ratio is 8 / 2) and 150 g of 25% sodium bisulfite aqueous solution are added, and at the same time vigorously stirred; after 1 hour, add a little 10% hydrochloric acid solution to adjust When the pH value reaches 4-5, it is diluted with water to obtain a translucent polyurethane composite aqueous solution containing 40% solid content.

Embodiment 2

[0083] 120g PO / EO polyether polyol (Mw=5000, hydroxyl value 33mgKOH / g), 50g polyoxyethylene diol (Mw=1000), 5g polydimethylsiloxane diol (Mw=1800, BY16 -201, DowCorning Toray), and 42g of isophorone diisocyanate, reacted at 90-95°C for 2 hours, then cooled; add 250ml of ethanol, mix well, and add a 20% sodium bisulfite aqueous solution while stirring 115g, reacted at room temperature to 40°C for 1.5 hours, the reactant changed from milky white to translucent. Add 10% hydrochloric acid solution to adjust the pH value to 5-6, and then add water to dilute to obtain a polyurethane aqueous solution with a solid content of 40%.

Embodiment 3

[0085] Put 400g polyoxyethylene-polyoxypropylene triol (Mw=3000), 100g polycaprolactone diol (PCL, Mw=2000), and 90g 1,6-hexamethylene diisocyanate at 90~110℃ React for 2.5 hours, cool to below 40°C, add ethanol / isopropanol mixed solvent (volume ratio is 8 / 2) 800ml, and 250g 25% sodium bisulfite aqueous solution, stir for 1.5 hours, then add 9g p-toluenesulfonic acid, Dilute with water to obtain a polyurethane emulsion with a solid content of 30%.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention relates to a wool knitted fabric shape-remembering finishing agent. The finishing agent comprises a waterborne polyurethane composition and a crosslinking agent, wherein the content of the waterborne polyurethane composition in the finishing agent is 2-8%, and the content of the crosslinking agent is 1.5-3% of the content of the waterborne polyurethane composition. The effectiveness of the crosslinking agent lies in that the crosslinking reaction temperature of polyurethane is reduced to 90-110 DEG C. The invention also provides a preparation method and application of the wool knitted fabric shape-remembering finishing agent. The wool knitted fabric treated with the provided shape-remembering finishing agent can be washed by a machine and dried by stoving, is easy to maintain, can remember the original shape of the fabric, can reduce the conditions of folding and distorting and has favorable anti-pilling performance, length-deformed recovery performance, fold recovery performance and better hand feel.

Description

technical field [0001] The invention relates to a shape-memory finishing agent for fabrics and its preparation method and application, more specifically, to a wool knitted fabric shape-memory finishing agent and its preparation method and application. Background technique [0002] One of the main disadvantages of wool knits or wool sweaters is that they lose their shape when worn and machine wash easily and become felted, so dry cleaning and special care are required. Not only is dry cleaning expensive, but it also affects the feel of wool knits. Due to environmental pollution issues, the manufacturing industry prohibits the use of enhanced chlorinated solvents for dry cleaning. For these reasons, more wool jersey garments must be machine washable and dryable. [0003] Various machine-washable wool products have actually been developed on an industrial scale, such as Chloro-Hercoset wool knitwear and Sirolan BAP woven garments and resin finishes. These chlorination or oxi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M15/568D06M15/572D06M15/653D06M101/12
Inventor 胡金莲刘益军王庆淼刘岩吕晶
Owner THE HONG KONG RES INST OF TEXTILES & APPAREL
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