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Compound finishing agent and preparation method thereof

A technology of finishing agent and application method, which is applied in fiber treatment, textiles and papermaking, etc., can solve the problems of cumbersome modification process and high cost of industrialization, and achieve the effect of simple compounding process, less environmental pollution and long-lasting effect

Inactive Publication Date: 2013-06-26
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantage is that the modification process is cumbersome and the industrialization cost is high

Method used

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  • Compound finishing agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Composite finishing agent containing 3wt% aqueous polyurethane and 0.1wt% chitosan. The specific content percentage of compound ingredients is as follows:

[0036] Waterborne polyurethane 3wt%

[0037] Chitosan with a viscosity average molecular weight of 100,000 0.1wt%

[0038] Acetic acid 0.1wt%

[0039]First dissolve chitosan with a viscosity average molecular weight of 100,000 in an acetic acid solution with a mass concentration of 1 wt%, and the mass ratio of chitosan to acetic acid is 1:1; then add the acetic acid solution of chitosan to the aqueous polyurethane solution The mass ratio of the acetic acid solution of chitosan to the aqueous polyurethane aqueous solution is 1:9, and the chitosan-waterborne polyurethane composite finishing agent can be obtained by mixing evenly; wherein, the aqueous polyurethane accounts for 3wt% of the composite finishing agent.

Embodiment 2

[0041] Composite finishing agent containing 10wt% aqueous polyurethane and 1wt% chitosan. The specific content percentage of compound ingredients is as follows:

[0042] Waterborne polyurethane 10wt%

[0043] Chitosan with a viscosity average molecular weight of 100,000 1wt%

[0044] Acetic acid 1wt%

[0045] First dissolve chitosan with a viscosity average molecular weight of 100,000 in an acetic acid solution with a mass concentration of 10wt%, and the mass ratio of chitosan to acetic acid is 1:1; then add the chitosan acetic acid solution to the aqueous polyurethane solution The mass ratio of the acetic acid solution of chitosan to the aqueous polyurethane aqueous solution is 1:9, and the chitosan-waterborne polyurethane composite finishing agent can be obtained by mixing evenly; wherein, the aqueous polyurethane accounts for 10wt% of the composite finishing agent.

Embodiment 3

[0047] Composite finishing agent containing 6wt% aqueous polyurethane and 0.5wt% chitosan. The specific content percentage of compound ingredients is as follows:

[0048] Waterborne polyurethane 6wt%

[0049] Chitosan with a viscosity average molecular weight of 120,000 0.5wt%

[0050] Acetic acid 0.5wt%

[0051] First dissolve chitosan with a viscosity average molecular weight of 120,000 in an acetic acid solution with a mass concentration of 5wt%, and the mass ratio of chitosan to acetic acid is 1:1; then add the acetic acid solution of chitosan to the aqueous polyurethane solution The mass ratio of the acetic acid solution of chitosan to the aqueous polyurethane aqueous solution is 1:9, and the chitosan-waterborne polyurethane composite finishing agent can be obtained by mixing evenly; wherein, the aqueous polyurethane accounts for 6wt% of the composite finishing agent.

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Abstract

The invention relates to a compound finishing agent and a preparation method thereof. The method comprises a step of compounding chitosan and waterborne polyurethane: dissolving chitosan with an HAc or HCl solution, and adding into a polyurethane aqueous solution with certain concentration. The application is as follows: natural fiber and synthetic fiber fabric and the blended or interlaced fabric thereof are processed to obtain anti-wrinkle / anti-felting / anti-bacterial functions, and the biodegradability of the fabric is improved at the same time. The fabric is soaked and rolled twice in the compound finishing agent, the liquid carry rate is 60-90%, and then the fabric is pre-dried in a heat settling machine before curing. The finished wool textile reaches the machine-washable anti-felting standard of ISO6330 and IWSTM No.31 of International Wool Secretariat; the longitude-latitude wrinkle recovery angel of the finished cotton fabric is 200-210 degrees, the retention rate of the fabric strength is at least 110%, and antibacterial property is obtained; and meanwhile, the hand feeling and biodegradability of the finished fabric are improved, and remarkable economic and environmental benefits are realized.

Description

technical field [0001] The invention belongs to the field of composite functional finishing of textiles, and relates to a composite finishing agent and its preparation method and application, in particular to a composite finishing agent of chitosan and water-based polyurethane, its preparation method and application. Background technique [0002] Waterborne polyurethane is a binary colloidal system formed by dissolving or dispersing polyurethane in water. Because the continuous phase is water, it is safe, easy to keep and store, and convenient to use. The application fields of waterborne polyurethane are mainly concentrated in the fields of leather, fabric finishing, coatings, adhesives and so on. At present, water-based polyurethane is used in a large amount in fabric finishing, which affects the hand feel and produces color difference. [0003] Water-based polyurethane has good physical and mechanical properties and film-forming properties, but has problems such as poor w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/03D06M15/564
Inventor 阎克路史吉华韩晓
Owner DONGHUA UNIV
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