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Method for dip-dyeing polyester rayon (cotton) fabrics or yarns with disperse and reactive dyes by one-bath process

A technology of reactive dyes and disperse dyes, applied in dyeing method, textile and papermaking, etc., can solve the problems of low process production efficiency, affecting output and production cost, too long process, etc., achieves obvious practical value, is conducive to environmental protection, The effect of shortening the dyeing process

Inactive Publication Date: 2011-08-24
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the dyeing of polyester / viscose (cotton) blended fabrics with disperse / reactive dyes generally adopts the two-bath dyeing method, which has low production efficiency and long process, which affects the output and production cost.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Embodiment 1: light-colored (disperse / reactive dyestuff consumption each 0.1%) fabric dyeing:

[0050] (1) Dyeing formula:

[0051] Vinylsulfone structure (KN type) reactive dye dosage

[0052] (to fabric weight): 0.1 %

[0053] Disperse dye dosage (weight to fabric): 0.1 %

[0054] Yuanming powder 30 g / L

[0055] Stabilizer HS-310 1.0 g / L

[0056] Caustic soda (solid alkali) 0.8 g / L

[0057] Dispersant HS-318 1.0 g / L

[0058] 98% acetic acid 3.0 g / L

[0059] Bath ratio 1:15

[0060] (2) Dyeing process:

[0061] At room temperature, add water, run the fabric, add reactive dyes, add sodium bicarbonate and stabilizer HS-310, add enough water——20~30min to heat up to 60~65℃——keep warm for 20~30min and add 1 / 3 caustic soda—— After 5-10 minutes of heat preservation, 2 / 3 of caustic soda - after 25-30 minutes of heat preservation, the temperature is raised to 85-90°C in 5-10 minutes - after 5-10 minutes of heat preservation, acetic acid is added, and disperse dye is ...

Embodiment 2

[0064] Embodiment 2: Yarn dyeing of medium color and luster (disperse / reactive dyestuff consumption each 1.0%):

[0065] (1) Dyeing formula:

[0066] Amount of reactive dyes with double structure (B, M, BF type) of monochloro-s-triazine and vinyl sulfone

[0067] (to yarn weight): 1.0 %

[0068] Disperse dye dosage (to yarn weight): 1.0 %

[0069] Salt 40g / L

[0070] Stabilizer HS-310 1.2 g / L

[0071] 30% liquid caustic soda 3.0 g / L

[0072] Dispersant HS-318 0.8 g / L

[0073] 98% acetic acid 3.2 g / L

[0074] Bath ratio 1: 12

[0075] (2) Dyeing process:

[0076] At room temperature, add water, run the yarn, add reactive dyes, add salt and stabilizer HS-310, add enough water——20~30min to heat up to 60~65℃——keep warm for 20—30min, add 1 / 3 caustic soda——keep warm After 5-10 minutes, 2 / 3 caustic soda - after 5-10 minutes of heat preservation, heat up to 85-90°C in 10-20 minutes - after heat preservation of 10-15 minutes, add acetic acid, add disperse dyes, and heat up t...

Embodiment 3

[0079] Embodiment 3: dark color (the amount of disperse / reactive dyes is about 2.5-3.0%) fabric dyeing:

[0080] (1) Dyeing formula:

[0081] Vinylsulfone structure (KN type) reactive dye dosage

[0082] (weight to fabric): 2.5 %

[0083] Disperse dye dosage (weight to fabric): 3.0 %

[0084] Yuanming powder 50 g / L

[0085] Stabilizer HS-310 1.5g / L

[0086] Caustic soda (solid alkali) 1.1 g / L

[0087] Dispersant HS-318 0.5 g / L

[0088] 98% acetic acid 3.4 g / L

[0089] Bath ratio 1:8

[0090] (2) Dyeing process:

[0091]At room temperature, add water, run the fabric, add reactive dyes, add sodium bicarbonate and stabilizer HS-310, add enough water——20~30min to heat up to 60~65℃——keep warm for 20~30min and add 1 / 3 caustic soda—— After 5-10 minutes of heat preservation, 2 / 3 of caustic soda - after 25-30 minutes of heat preservation, heat up to 80-90°C in 5-10 minutes - after 5-10 minutes of heat preservation, add acetic acid, add disperse dyes, and heat up to 125-135°C...

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PUM

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Abstract

The invention discloses a method for dip-dyeing polyester rayon (cotton) fabrics or yarns with disperse and reactive dyes by a one-bath process. The invention is characterized in that the reactive dyes at the low temperature of 60-65 DEG C or dual temperature of 60-65 DEG C and 85-90 DEG C are adopted, and alkali with a pH value of 11-11.5 is added to dye the cotton or rayon fibers; and then acid is added until the pH value is 5-6, the temperature is raised to about 130 DEG C, and the disperse dyes are used to dye the polyester fibers. By using the one-bath two-step dyeing technology instead of the traditional two-bath process, the dyeing time is greatly shortened, the yield is increased, and the consumption of energy and water quantity and the alkali usage are reduced, thus lowering the production cost, reducing the sewage and the content of alkali in the sewage and being beneficial to environmental protection; when the disperse dyes are used for dyeing, the dye liquid is a buffer system formed by sodium acetate generated by firstly adding alkali, then adding acetic acid and neutralizing the alkali and the acetic acid and acetic acid, thus improving the dye reproducibility (one-time dyeing success rate) and reducing the rehandling possibility; and the method has very obvious practical value.

Description

technical field [0001] The invention relates to a polyester-viscose (cotton) blended fabric dyeing method, in particular to a polyester-viscose (cotton) fabric or yarn dipping dyeing method with disperse and reactive dyes in the same bath. Background technique [0002] Polyester / viscose (cotton) blended fabric not only has the function of moisture absorption and breathability of cellulose fiber, but also has good shape retention and elasticity of polyester (polyester) fiber. It is favored by consumers and occupies an important position in various clothing fabrics. Polyester / viscose (cotton) blended fabrics were originally dyed with disperse / direct dyes in the same bath (dyed polyester with disperse dyes and cotton or viscose fibers with direct dyes). Due to the unsatisfactory color fastness of direct dyes, it is difficult to meet the needs of consumers. Require. In order to improve product quality and added value, most enterprises are currently dyeing with disperse / reactive...

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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IPC IPC(8): D06P3/872D06P1/44D06P1/673
Inventor 王光明汪进前陈君莉周岚
Owner ZHEJIANG SCI-TECH UNIV
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