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Efficient and poor yellow-changing citric acid non-iron finishing liquid and application thereof

A non-iron finishing and citric acid technology, which is applied in fiber treatment, textiles and papermaking, plant fibers, etc., can solve the problems of poor resilience, yellowing of citric acid DP finishing, etc., and achieve the effect of less negative impact on fabric strength

Inactive Publication Date: 2013-11-27
DONGHUA UNIV
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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 kind of high-efficiency, weak yellowing citric acid non-ironing finishing solution. The invention solves the yellowing and poor resilience of pure cotton fabrics through citric acid DP finishing by adding a polyol chain extender. The two major problems make the citric acid non-iron finishing with its own cost advantage meet the requirements of replacing 2D resin finishing in terms of performance, which is of great significance to the promotion of polycarboxylic acid formaldehyde-free non-iron finishing

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Mix 140g of citric acid, 72g of sodium hypophosphite SHP and 7.8g of xylitol (xylitol is a chain extender) into 1L of water, dissolve at room temperature, add softener CT208CN20g / L, penetrant JFC2g / L, stir well, and get Finishing fluid.

[0024] Pure cotton plain fabric (deboiled and bleached 40×40, 133×72, 123g / m 2 ) padding finishing solution, the liquid rolling rate is 70%, dried at 85°C for 5 minutes to constant weight, baked at 180°C for 5 minutes, washed with water, and dried (washed and dried according to AATCC Test Method D124-1989).

[0025]The crease recovery angle after one standard wash is 287, the whiteness is 34.5, the tear strength retention rate (warp direction) is 61%, the DP grade is 4.0 after 5 washes, the crease recovery angle is >260 after 20 standard washes, and the DP grade is 3.8.

Embodiment 2

[0027] Mix 140g of citric acid, 72g of sodium hypophosphite SHP and 70g of pentaerythritol (pentaerythritol is a chain extender) into 1L of water, dissolve in a water bath at 40°C, add softener AE38CN at 20g / L, penetrant JFC-2 at 2g / L L, and stirred evenly to obtain a finishing liquid.

[0028] Pure cotton plain fabric (deboiled and bleached 40×40, 133×72, 123g / m 2 ) padding finishing solution, the liquid rolling rate is 70%, dried at 85°C for 5 minutes to constant weight, baked at 180°C for 5 minutes, washed with water, and dried (washed and dried according to AATCC Test Method D124-1989).

[0029] The crease recovery angle is 253 after standard water washing once, the whiteness is 72.8 (higher than the original fabric), the tear strength retention rate (warp direction) is 65.6%, and the DP grade after washing 5 times is 3.5.

Embodiment 3

[0031] Mix 140g citric acid, 72g sodium hypophosphite SHP, 17.5g pentaerythritol and 15.5g xylitol (pentaerythritol + xylitol mixed chain extender) into 1L water, dissolve in a water bath at 40°C and add softener CT208CN to make 20g / L, the penetrant JFC is 2g / L, stir evenly to obtain the finishing solution.

[0032] Pure cotton plain fabric (deboiled and bleached 40×40, 133×72, 123g / m 2 ) padding finishing solution, the liquid rolling rate is 70%, dried at 85°C for 5 minutes to constant weight, baked at 180°C for 5 minutes, washed with water, and dried (washed and dried according to AATCC Test Method D124-1989).

[0033] After standard washing once, the wrinkle recovery angle is 270, the whiteness is 57, the tear strength retention rate (warp direction) is 62%, and the DP grade is 3.9 after washing 5 times.

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Abstract

The invention relates to an efficient and poor yellowing-changing citric acid non-iron finishing liquid and the application thereof. The finishing liquid is a citric acid aqueous solution containing a polyatomic alcohol chain extendor, a penetrating agent, a softening agent and an esterized catalyst. The application is as follows: a piece of fabric is in padding into finishing liquid, after padding, the liquid carrying rate can reach 50 to 80 percent, pre-baking and baking are performed, and then water washing and drying are carried out, so as to obtain a piece of finished fabric. According to the invention, by adding the polyatomic alcohol chain extendor, two problems of yellowing and poor resilience in citric acid DP (durable press) finishing to pure cotton fabric can be solved at the same time, as a result, the citric acid non-iron finishing having a cost advantage can meet the requirements of replacing 2D resin finishing in performance, and has a great significance to the popularization of polybasic carboxylic acid formaldehyde-free nonironing.

Description

technical field [0001] The invention belongs to the field of non-ironing finishing technology of cotton fabrics and its application, in particular to a citric acid non-ironing finishing technology and its application. Background technique [0002] Cotton textiles are widely welcomed because of their good air permeability, soft touch and comfortable wearing, but they are easy to wrinkle during wearing. In order to obtain better visual effects and meet specific wearing requirements, durable pressing of cotton fabrics is particularly important. At present, dimethylol dihydroxyethylene urea (2D resin), the most common non-ironing finishing agent for cotton fabrics in the industry, and its etherified derivatives have the problem of formaldehyde release during finishing and use (SHIH C-Y, HUANG K-S. Kinetic studies of crease-resistant finishing process for cotton fabrics with DMEU / MMEU prepolymer mixture[J].J Appl Polym Sci,2002,85:509-13; SHUKLA S R,PINGALE N D.Formaldehyde: a m...

Claims

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Application Information

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IPC IPC(8): D06M13/224D06M101/06
Inventor 王碧佳姚文婷
Owner DONGHUA UNIV
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