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Preparation method of cotton fabric formaldehyde-free crease-resistant finishing agent

An anti-wrinkle finishing agent, a technology for cotton fabrics, applied in fiber treatment, plant fibers, textiles and papermaking, etc., can solve the problems of fabric strength damage, fabric yellowing, strength retention rate and chroma reduction, etc., to improve wrinkle Effects of elasticity, reduced damage, high strength retention and chromaticity

Inactive Publication Date: 2017-09-01
CHANGZHOU LANXU CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a formaldehyde-free anti-wrinkle finishing agent for cotton fabrics in view of the drawbacks of the traditional formaldehyde-free anti-wrinkle finishing agent, such as easy yellowing of the fabric, serious damage to the strength of the fabric, and reduction of strength retention and chroma.

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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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0021]Weigh 120g silk and add it to 500g mass fraction 2% sodium hydroxide solution, mix and heat to 80°C, heat and stir for 2h, filter the silk filter residue, wash the silk filter residue 3 times with deionized water, and put Add the washed silk filter residue to a lithium bromide solution with a mass fraction of 10%, stir and mix at a speed of 300r / min for 2 hours, and then filter to obtain a silk protein solution. Concentrate the silk protein solution under reduced pressure for 60 minutes at 45°C and 0.03MPa to obtain silk protein Concentrate, put the silk protein concentrate into a three-necked flask, add 5% itaconic acid in the quality of the silk protein concentrate to the three-necked flask, stir and mix for 5 minutes, put the three-necked flask into a water bath, heat up to 60°C, and add Add 2g mass fraction of 5% ammonium persulfate solution into the three-necked flask, stir for 5 minutes, add 15% acrylic acid of the mass of silk protein concentrate dropwise, control ...

example 2

[0024] Weigh 130g silk and add it to 550g mass fraction of 5% sodium hydroxide solution, mix and heat to 89°C, heat and stir for 3h, filter the silk filter residue, wash the silk filter residue 4 times with deionized water, and put Add the washed silk filter residue to a lithium bromide solution with a mass fraction of 10%, stir and mix at a speed of 400r / min for 3 hours, and then filter to obtain a silk protein solution. Concentrate the silk protein solution under reduced pressure for 80 minutes at 48°C and 0.04MPa to obtain silk protein Concentrate, put the silk protein concentrate into a three-necked flask, add itaconic acid with a quality of 6% of the silk protein concentrate into the three-necked flask, stir and mix for 8 minutes, put the three-necked flask into a water bath, heat up to 65°C, and add Add 4g mass fraction of 5% ammonium persulfate solution into the three-necked flask, stir for 8 minutes, then add 18% acrylic acid of the mass of silk protein concentrate drop...

example 3

[0027] Weigh 150g silk and add it to 600g mass fraction 8% sodium hydroxide solution, mix and heat to 99°C, heat and stir for 4h, filter the silk filter residue, wash the silk filter residue 5 times with deionized water, and mix it according to the mass ratio of 1:5 Add the washed silk filter residue to a lithium bromide solution with a mass fraction of 10%, stir and mix at a speed of 500r / min for 4 hours, and then filter to obtain a silk protein solution. Concentrate the silk protein solution under reduced pressure for 100 minutes at 50°C and 0.05MPa to obtain silk protein Concentrate, put the silk protein concentrate into a three-necked flask, add itaconic acid with a mass of 7% of the silk protein concentrate into the three-necked flask, stir and mix for 10 minutes, put the three-necked flask into a water bath, heat up to 70°C, and add Add 5g mass fraction of 5% ammonium persulfate solution into the three-necked flask, stir for 10min, add 20% acrylic acid of silk protein con...

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 discloses a preparation method of a formaldehyde-free crease-resistant finishing agent, and belongs to the technical field of textile finishing. The preparation method comprises the following steps: extracting fibroin from silk, carrying out a cross-linking reaction with itaconic acid, acrylic acid and the like to obtain a reactant for standby use, then mixing and soaking cotton fiber with water, then dropwise adding a sulfuric acid solution and cold water after defibering to obtain a turbid liquid, after mixing with deionized water after centrifugal separation for ultrasonic dispersion, adding acid anhydride for a stirring reaction to obtain a mixture, after centrifugal separation and washing drying, stirring and mixing a cocoanut fatty acid diethanolamide solution and linoleic acid to obtain a mixed liquor A, and then stirring and mixing with a standby reactant and carboxymethylcellulose to obtain the cotton fabric formaldehyde-free crease-resistant finishing agent. The preparation method is simple in preparation steps, the obtained formaldehyde-free crease-resistant finishing agent is free of formaldehyde release and is safe and environmentally-friendly, a fabric after being used does not yellow, the fabric is little in strength damage, and the break strength retention and chromaticity of the fabric can be effectively improved.

Description

technical field [0001] The invention relates to a preparation method of a formaldehyde-free anti-wrinkle finishing agent, belonging to the technical field of fabric finishing. Background technique [0002] In the traditional dyeing and finishing process, in order to achieve durable anti-wrinkle, stiffness, anti-shrinkage and other properties of textiles, formaldehyde and urea are generally used as raw materials, and the urea-formaldehyde resin finishing agent formed by condensation is used under the acid catalyst and appropriate baking temperature. , and finally form a network crosslink with cellulose fibers, thereby improving the crease resilience and dimensional stability of the fabric, and has a good non-ironing finishing effect. However, there are a large amount of free formaldehyde and formalin in this kind of finishing agent, and the fabrics treated with this kind of finishing agent will release a large amount of formaldehyde during the human body wearing process, acco...

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 Applications(China)
IPC IPC(8): D06M15/263D06M15/15D06M13/184D06M13/41D06M13/203D06M13/207D06M15/09D06M101/06
CPCD06M15/263D06M13/184D06M13/203D06M13/207D06M13/41D06M15/09D06M15/15D06M2101/06D06M2200/20
Inventor 方晓俊陈春
Owner CHANGZHOU LANXU CHEM CO LTD
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