Method for preparing environmental protection and flame retardation polyester fibers through dope dyeing

A technology of flame retardant polyester and dope dyeing, which is applied in the manufacture of fire retardant and flame retardant filaments, single-component polyester rayon, adding dyes in spinning solutions, etc., can solve the problem of high unit consumption, high energy consumption and cost High problems, to achieve the effect of short residence time at high temperature, uniform fiber color and good flame retardant performance

Active Publication Date: 2015-12-30
SHANGHAI DEFULUN CHEM FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Invention patent Chinese invention patent CN103255498A (the patent number is CN201310147346.X, the invention name is "a method for preparing colored polyester fiber by dope coloring") has been improved by adding liquid color paste on-line and polyester melt direct spinning The combination of technology solves the problems of high temperature, high pressure or loaded dyeing method, which cause the colored sewage to be treated with difficulty, high cost, and direct discharge will cause serious environmental pollution. Intermittent methods such as

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Example 1: Preparation of Flame Retardant Liquid Color Paste A

[0052] Liquid color paste A is made up of the following components by weight percentage:

[0053] Environmentally friendly dyes: diaminostilbene disulfonic acid dyes direct light fast green IRC, 20

[0054] Solvent: N,N-dimethylformamide, 60

[0055] Dispersant: PluronicP123, molecular formula EO20PO70EO20, 10

[0056] Wetting agent: sodium salt of isopropylnaphthalenesulfonate, 10.

[0057] The above environmental dyes, solvents, dispersants and wetting agents can be purchased.

[0058] The preparation method of flame retardant liquid color paste A is as follows: add dispersant PluronicP123 and wetting agent sodium salt of isopropylnaphthalene sulfonate into the solvent, stir to dissolve, then add diaminostilbene disulfonic acid dyes directly Light-fast green IRC, stir evenly, fully grind into slurry, and get liquid color paste A after it is dispersed evenly.

[0059] Add an environmentally friendly ...

Embodiment 2

[0060] Example 2: Preparation of Flame Retardant Liquid Color Paste B

[0061] Liquid color paste B is made up of the following components by weight percentage:

[0062] Eco-friendly dye: Eco-friendly acid dye C.I. Acid Red 37, 30

[0063] Solvent: N,N-dimethylformamide, 55

[0064] Dispersant: PluronicF68, the molecular formula is EO80PO30EO80, 8

[0065] Wetting agent: sodium salt of isobutylnaphthalene sulfonate, 7

[0066] The above environmental dyes, solvents, dispersants and wetting agents can be purchased.

[0067] The preparation method of flame retardant liquid color paste B is: add the dispersant PluronicF68, the molecular formula is EO80PO30EO80, and the wetting agent sodium salt of isobutyl naphthalene sulfonate into the solvent, stir to dissolve it, and then add the environment-friendly acid dye C.I. Acid Red 37. Stir evenly, fully grind it into a slurry, and obtain liquid color paste B after it is uniformly dispersed.

[0068] Add an environmentally friendl...

Embodiment 3

[0069] Example 3: Preparation of Flame Retardant Liquid Color Paste C

[0070] Liquid color paste C is made up of the following components by weight percentage:

[0071] Environmentally friendly dyes: environmentally friendly disperse dyes ForonBlueRD-SE290, 25

[0072] Solvent: N,N-dimethylformamide, 45

[0073] Dispersant: Pluronic F127, molecular formula EO106PO70EO106, 15

[0074]Wetting agent: Sodium amylnaphthalene sulfonate, 15

[0075] The above environmental dyes, solvents, dispersants and wetting agents can be purchased.

[0076] The preparation method of flame retardant liquid color paste C is as follows: add dispersant PluronicF127 molecular formula EO106PO70EO106 and wetting agent sodium amyl naphthalene sulfonate into the solvent, stir to dissolve, then add environment-friendly disperse dye ForonBlueRD-SE300, Stir evenly, fully grind it into a slurry, and obtain liquid color paste C after it is uniformly dispersed.

[0077] Add an environmentally friendly fl...

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Abstract

The invention belongs to the technical field of preparation of polyester fibers, and concretely relates to a method for preparing environmental protection and flame retardation polyester fibers through dope dyeing. The method comprises the following steps: blending an environmentally friendly dye with a solvent, a dispersant and a wetting agent to prepare a liquid color paste, and adding an environmentally-friendly flame retardant; injecting one or two or more flame retardation liquid color pastes to a polyester melt pipeline through a metering injection pump; and uniformly mixing polyester melt and the liquid color paste(s) through a static mixing device. The invention provides a dyeing system. The dyeing system has the advantages of high temperature resistance, excellent color fastness, intermiscibility with polyester melt, realization of stable dispersion, flame retardation environmental protection and simple operation. The limit oxygen index of the produced dope dyed flame retardation polyester fibers is not lower than 32%, the breaking strength is 3.7-4.5cN/dtex, the color fastness to washing is 5 level, the sublimation fastness is 5 level, and no APEO is detected.

Description

technical field [0001] The invention belongs to the technical field of polyester fiber preparation, and in particular relates to a method for preparing an environment-friendly flame-retardant polyester fiber by dope coloring. Background technique [0002] Dope-dyed polyester fibers are fibers that are dyed on polyester melt and then spun. Compared with conventional dyeing methods, dope-dyed fibers do not need to be dyed in subsequent processes, which reduces the production cost of fiber dyed yarns and reduces It reduces the consumption of water and energy, and has obvious advantages in energy saving and emission reduction. At the same time, the colored fiber produced by the dope coloring technology has uniform color and high color fastness. . [0003] At present, the stock solution coloring technology also has some defects in the actual production process, such as difficult color adjustment, difficult to determine the color scheme, and not suitable for small batch productio...

Claims

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Application Information

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IPC IPC(8): D01F6/92D01F1/07D01F1/06
Inventor 陆育明李东华冯忠耀陈辉华沈飞王水兵杨卫忠
Owner SHANGHAI DEFULUN CHEM FIBER
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