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Polylactic acid fabric knitted cloth dyeing technique

A polylactic acid fiber and knitted fabric technology, applied in the direction of dyeing, textile and papermaking, fabric surface trimming, etc., can solve the problems of lower dyeing rate of disperse dyes, limited dispersibility and solubility, and low utilization rate of dyes, and save energy. , cost reduction, high color fastness effect

Inactive Publication Date: 2007-12-05
SHANDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Disperse dyes are suitable for the dyeing of polylactic acid fibers, but for domestic disperse dyes, their dispersion solubility in a certain bath ratio is limited. With the increase of dyes, the dyeing rate of disperse dyes decreases significantly, and the utilization rate of dyes is low.

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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  • Polylactic acid fabric knitted cloth dyeing technique

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Example 1: C.I. Disperse Red 74 was used to dye the knitted fabric of polylactic acid fiber.

[0031] 1) Washing process

[0032] Prepare scouring lotion according to the following parameters: sodium bicarbonate or sodium carbonate is 0.5g / L, scouring lotion TYI-3715 is 1.5g / L;

[0033] Prepare scouring lotion at room temperature, add polylactic acid fiber knitted fabric, heat up to 50°C, scouring and wash 2 times, each scouring and washing time is 15min;

[0034] 2) Dyeing process

[0035] Prepare the dye solution according to the following parameters: CI Disperse Red 74 dosage is 1% (on weight of fabric, owf), dispersant MF 0.1g / L, levelling agent A-80 0.5g / L, bath ratio 1:12, use Adjust the PH value to 4 with ammonium sulfate or acetic acid and sodium acetate.

[0036] Add auxiliaries and CI Disperse Red 74 to the dyeing vat at room temperature. After the dye solution is prepared, the dyeing solution is increased from room temperature to 40℃ in the dyeing sample machine,...

Embodiment 2

[0044] Example 2: C.I. Disperse Yellow 54 was used to dye the knitted fabric of polylactic acid fiber.

[0045] 1) Washing process

[0046] Prepare scouring lotion according to the following parameters: sodium bicarbonate or sodium carbonate is 1g / L, scouring lotion TYI-3715 is 2g / L;

[0047] Prepare scouring lotion at room temperature, add polylactic acid fiber knitted fabric, heat up to 55°C, scouring and wash 2 times, each scouring and washing time is 20min;

[0048] 2) Dyeing process

[0049] Prepare the dye solution according to the following parameters: CI Disperse Yellow 54 dosage is 1.5% (on weight of fabric, owf), anionic surfactant AES 0.2g / L, levelling agent SL 0.4g / L, bath ratio 1:12, use Adjust the pH to 5 with ammonium sulfate or acetic acid and sodium acetate.

[0050] Add auxiliaries and CI Disperse Yellow 54 to the dyeing vat at room temperature. After the dyeing solution is prepared, the temperature is raised from room temperature to 40℃ in the dyeing sample mach...

Embodiment 3

[0058] Example 3: C.I. Disperse Blue 79 was used to dye the knitted fabric of polylactic acid fiber.

[0059] 1) Washing process

[0060] Prepare scouring lotion according to the following parameters: sodium bicarbonate or sodium carbonate is 2.5g / L, scouring lotion TYI-3715 is 2.5g / L;

[0061] Prepare scouring lotion at room temperature, add polylactic acid fiber knitted fabric, heat up to 50°C, scouring and wash 2 times, each scouring and washing time is 15min;

[0062] 2) Dyeing process

[0063] Prepare the dye solution according to the following parameters: CI Disperse Blue 79 dosage is 3% (on weight of fabric, owf), anionic surfactant AES 0.1g / L, levelling agent DL 0.5g / L, bath ratio 1:12, use Adjust the pH value to 4.5 with ammonium sulfate or acetic acid and sodium acetate.

[0064] Add auxiliaries and CI Disperse Blue 79 to the dye vat at room temperature. After the dye solution is prepared, the dyeing solution is heated from room temperature to 40℃ in the dyeing sample mac...

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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PUM

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Abstract

The process of dyeing knitted fabric of polylactic acid fiber belongs to the field of fabric dyeing technology. The process of dyeing knitted fabric of polylactic acid fiber with disperse dye features the dye amount of 1-3 wt% of the polylactic acid fiber fabric, the dyeing temperature of 95-115 deg.c, the dispersant amount in 0.1-0.3 g / l, the leveling agent amount of 0.4-0.5 g / l, the bath ratio of 1 to 6-14, and the pH value of 3-6. The present invention can reach dye uptake as high as 80 % and high color fastness, and the dyed polylactic acid fiber fabric is bright and beautiful.

Description

Technical field [0001] The invention belongs to the technical field of disperse dye dyeing textile fabrics and fiber dyeing technology, in particular to the dyeing technology of polylactic acid fiber knitted fabric. Background technique [0002] Polylactide fiber (Polylactide Fiber or Polylactic Acid Fiber, referred to as PLA fiber) is a polyester synthetic fiber prepared from natural sugars such as grains and sugar beets as raw materials through solution spinning or melt spinning. The definition of polylactic acid fiber by the US Federal Trade Commission is: a fiber spun from polylactate as the main raw material, and the fiber molding is composed of at least 85% of lactate units, and this lactate is derived from Natural starch. At present, the commercially produced PLA fiber is made by spinning lactic acid produced by the fermentation of corn starch as the raw material, and the polylactate solution produced by the dehydration polymerization reaction as the spinning solution. [...

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): D06B1/00D06C7/02D06P1/16D06P1/44D06P3/52
Inventor 傅忠君郭申于鲁汕
Owner SHANDONG UNIV OF TECH
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