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Method for improving deep dyeing of dacron dispersed dye under normal pressure

A disperse dye and normal pressure technology, applied in the field of polyester, can solve the problems of difficulty in adapting to multi-component fabric dyeing, high cost and energy consumption, and achieve the effect of low energy consumption and simple process

Inactive Publication Date: 2008-08-27
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this dyeing method not only has high cost and energy consumption, but also is difficult to adapt to the dyeing problems of multi-component fabrics that appear in large quantities at present.
On the other hand, there are still many problems in the traditional polyester atmospheric pressure carrier dyeing process, and it is necessary to find a new method and new process to improve the deep dyeability of disperse dyes under normal pressure conditions.

Method used

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  • Method for improving deep dyeing of dacron dispersed dye under normal pressure
  • Method for improving deep dyeing of dacron dispersed dye under normal pressure
  • Method for improving deep dyeing of dacron dispersed dye under normal pressure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Synthesis of Phenyl Acrylate

[0021] When the ratio of calcium chloride to ice in the ice-salt bath was 6:5, and at -20 °C, phenol (18.61 mL, 212 mmol) and triethylamine (61.12 mL, 424 mmol) were dissolved in tetrahydrofuran (200 mL) solution , acryloyl chloride (17.2, 212 mmol) was added dropwise over 60 minutes, followed by reaction for 6 hours with stirring during the reaction.

[0022]

Embodiment 2

[0024] Study on Dyeing Process of Polyester Disperse Dyes (Toras Blue C3R) with Phenyl Acrylate

[0025] The dyeing process is as follows: adding phenyl acrylate, auxiliaries and dyes at room temperature, adjusting the pH value with acetic acid solution, heating up to 98°C at 1.5°C / min, holding for 60 minutes, then cooling down to 60°C at 1°C / min, reducing cleaning, washing with water .

[0026] Polyester was dyed according to the dyeing process in a dye liquor with a dye concentration of 2% (o.w.f.), an average dosage of 2g / L, a liquor ratio of 50:1, and pH=6. Measure the K / S value of polyester with a computer color measuring and matching instrument (Datacolor Spectraflash plus). In order to reduce the test error, take multiple points for each test sample to measure the K / S value, until the error is below 0.01, and take the average value.

[0027] Orthogonal test

[0028] The levels of each factor are as follows:

[0029] Hydrogen peroxide concentration A1, A2, A3: 6% (v / v...

Embodiment 3

[0040] Effect of Phenyl Acrylate on Dyeing Percentage and K / S Value of Polyester and Polyester Cotton Disperse Dyes

[0041] In the dye concentration 2% (o.w.f.), the amount of phenyl acrylate 4% (v / v), the amount of hydrogen peroxide 10% (v / v), the amount of peregrine O is 4g / L, the liquor ratio is 50:1, pH=5.5 In the dyeing solution, dye polyester and polyester-cotton according to the dyeing process, and fully wash them after dyeing. Measure the K / S value of polyester with a computer color measuring and matching instrument (Datacolor Spectraflash plus). In order to reduce the test error, take multiple points for each test sample to measure the K / S value, until the error is below 0.01, and take the average value. The percentage of dyeing was determined by the residual liquid method. 1mL of the pre-dyeing and post-dyeing solutions were taken into a 10mL volumetric flask, 5mL of acetone was added, and water was added to the mark, the absorbance was measured, and the dye uptake ...

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Abstract

The invention relates to a method for improving dispersion dye deep dyeing of polyester fiber in the normal pressure condition, which comprises the following steps: (1) charging aromatic ester which is provided with reaction group in the polyester cotton dye dye-bath, dyeing in the normal pressure condition with reasonable dyeing technique parameter, (2) testing dye-uptake percentage and K / S value after dyeing. The method improves dispersion dye deep dyeing of polyester fiber in the normal pressure condition effectively, which has the advantages of low dyeing temperature and little energy consumption.

Description

technical field [0001] The invention belongs to the field of polyester, in particular to a method for improving the dyeing rate of disperse dyes under normal pressure conditions of polyester. Background technique [0002] Polyester is a hydrophobic thermoplastic fiber. From its molecular structure, it can be known from its molecular structure that there is no hydrophilic group or strong polar group in the fiber molecule except for the end group. Reactive groups that can bind to dyes. [0003] Polyester fibers are suitable for non-ionic dyes with low solubility and strong hydrophobicity. Even dyeing with disperse dyes presents additional problems in addition to certain smaller molecular weight dyes. Mainly due to the relatively tight arrangement of polyester molecules, there are only small voids in the fibers. When the temperature is low, the thermal motion of the molecules changes their positions to a small extent. Under humid conditions, polyester fibers do not swell as ...

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): D06P3/54D06P1/651D06P3/82
Inventor 陆大年王娟娟
Owner DONGHUA UNIV
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