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Method for achieving continuous pad-dry-cure dyeing of polyester

A continuous, hot-melt technology, applied in the field of textile printing and dyeing, can solve problems such as poor color fastness, less hue, and poor color brightness

Active Publication Date: 2016-06-15
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

2) The viscosity-reducing effect of dispersant MF and the dye transfer rate are low. Disperse dyes contain a large amount of dispersant MF. The lower the dye strength or strength, the higher the content of dispersant MF.
Compared with disperse dyes, paint has the advantage of non-swimming, but its less hue, poor color brightness and poor color fastness are still the bottlenecks restricting the development of this technology

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Synthetic example

[0062] Preparation of prepolymer

[0063]Mix 13.5g of butyl acrylate, 4.0g of styrene, 5.5g of propylene glycol block polyether L-64, 2.2g of isomeric tridecyl alcohol polyoxyethylene ether (8) and 64.8g of water, and fully stir to form an emulsion; The mass fraction is 1.0g of ammonium persulfate dissolved in 9.0g of water at room temperature, and fully stirred to form an initiator solution; take half of the mass of the emulsion and half of the mass of the initiator solution and add them to the reaction device of the three-mouth sesame cake, stir while heating, and heat up to 75°C. When the temperature reaches 75°C, slowly add the remaining emulsion and the initiator solution dropwise under stirring state, and the dropping time is 100min. After the dropwise addition was completed, the stirring was continued for 110 min to obtain prepolymer A1.

[0064] Mix 15.0g of butyl acrylate, 6.0g of styrene, 7.5g of propylene glycol block polyether L-64, 4.5g of isomeric tridecyl alco...

Embodiment 1

[0075] First mix 3.0g liquid disperse dye A, 0.5g prepolymer A1, 0.3g prepolymer B1, 0.3g prepolymer C1, 0.2g H90 synthetic thickener, 0.05g penetrant JFC and 95.65g water, stir well , to prepare a staining solution. Then the polyester fabric is dipped with the dyeing solution, two dips and two pads, the padding rate is 80%, and the padding temperature is room temperature. The padded polyester fabric is dried and cured on a heat setting machine, the curing temperature is 185° C., and the curing time is 90 seconds. Finally, the polyester fabric was washed in a washing machine at a temperature of 60° C. and a washing time of 10 minutes; after the washing was completed, it was dried on a drying device to obtain polyester dyed products.

Embodiment 2

[0077] Mix 3.0g liquid disperse dye C, 1.0g prepolymer A2, 0.5g prepolymer B2, 0.5g prepolymer C2, 0.4g PTF-A synthetic thickener, 0.2g penetrant JFC and 94.40g water, stir Homogenously, a staining solution is prepared. Then pad the polyester fabric with the dyeing solution, two dips and two pads, the liquid padding rate is 85%, and the padding temperature is room temperature. The padded polyester fabric is dried and cured on a heat setting machine, the curing temperature is 195° C., and the curing time is 50 seconds. Finally, the polyester fabric was washed in a washing machine at a temperature of 60° C. and a washing time of 10 minutes; after the washing was completed, it was dried on a drying device to obtain polyester dyed products.

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Abstract

The invention discloses a method for achieving continuous pad-dry-cure dyeing of polyester. The method comprises the steps of padding of the polyester in a dyeing solution, drying, curing and water processing. The dyeing solution comprises liquid disperse dye, prepolymer A, prepolymer B, prepolymer C, a synthetic thickener and a penetrating agent. The method has the advantages that the dyeing uniformity is good, the dye is not prone to migration in the drying process, the relative fixation rate of the dye is high, the dyefastness is good, colored wastewater discharge almost does not exist, processing equipment is conventional equipment, and the method is a continuous dyeing processing technology achieving energy conservation and emission reduction.

Description

technical field [0001] The invention belongs to the technical field of textile printing and dyeing, and in particular relates to a method for continuous hot-melt dyeing of polyester, which is used for the dyeing process of polyester fabric with low water consumption, energy saving and emission reduction. Background technique [0002] Generally speaking, polyester fabrics are mostly dyed in batches, continuous hot-melt dyeing is not suitable for dyeing pure polyester fabrics, and hot-melt dyeing of polyester / cotton blended or interwoven fabrics is a conventional dyeing technique. The main reasons why pure polyester fabrics do not use hot-melt dyeing are: 1) The dye is prone to migration and dyeing is uneven. The slightly water-soluble disperse dye is temporarily fixed on the surface of the fiber through continuous pad dyeing. During the drying process, due to The hydrophobic and smooth surface structure of polyester fiber lacks strong binding force with slightly water-soluble...

Claims

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Application Information

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IPC IPC(8): D06P3/54D06P1/16D06P1/52
CPCD06P1/16D06P1/525D06P3/54
Inventor 陈娟朱亚伟
Owner SUZHOU UNIV
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