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Method for staining aromatic polyamide fibre

A technology of aromatic polyamide and dyeing method, which is applied in the field of dyeing and finishing, can solve the problems of difficult application of excessive coloring, different coloring conditions, and high cost, and achieve good dyeing performance and practical performance, soft hand feeling, and stable product quality.

Inactive Publication Date: 2008-09-03
龚平
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the difficult dyeing characteristics of aromatic polyamide, the dyeing of colored aromatic polyamide fiber only considers the method of fixing the dye in the fiber material (patent CN91109377.X), but adding color liquid in spinning must be mass-produced , resulting in high cost, difficulty in application of excessive color in production and other defects, while dyeing of blended aramid yarn is prone to color difference due to different coloring conditions
There is no relevant report on the dyeing of aramid fiber

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Material: Aromatic polyamide loose fiber 1.5D, 51cm

[0018] Equipment: high temperature and high pressure dyeing machine, special cage, high frequency dryer

[0019] Steps: (1) Cage installation: put the aromatic polyamide loose fiber into a special cage for use;

[0020] (2) Dyeing: Hang the cage into the high-temperature and high-pressure dyeing machine, and hold it in a color paste solution containing levelling agent, dye guide and dye at 70°C for 30 minutes; heat up to 130°C while stirring and keep it for 60 minutes; cool to After 70°C, wash with 100°C water for 20 minutes; use 85°C soaping solution for 20 minutes; wash with 100°C water for 30 minutes before leaving the tank;

[0021] Color paste solution formula:

[0022] The dye is a water-soluble cation with a concentration of 1% o.w.f;

[0023] The leveling agent is AC, and the concentration is 2g / l;

[0024] The dye guide agent is BE with a concentration of 15g / l;

[0025] Neutral soap lotion with a concentration ...

Embodiment 2

[0031] Material: Aromatic polyamide sliver

[0032] Equipment: high temperature and high pressure dyeing machine, special cage, steam dryer

[0033] Steps: Based on Example 1

[0034] Color paste solution formula:

[0035] The dye is cationic and the concentration is 3.5% o.w.f;

[0036] The leveling agent is AC, and the concentration is 3g / l.

[0037] The dye guide agent is BE with a concentration of 40g / l.

[0038] Neutral soap lotion with a concentration of 2g / l

[0039] Measured quality index: dry grinding (level) 4 level original change >3 level

[0040] Wet grinding (grade) 4 white cloth staining >3

[0041] Formaldehyde content 35ppm

[0042] In the above embodiments, the leveling agent and the dye guiding agent are all products of Jiangsu Yixing Jianhe Auxiliary Factory.

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Abstract

The invention discloses a staining method for an aromatic polyamide fiber, which takes the aromatic polyamide fiber as the raw material, uses mixed color slurry to carry on pre-placed constant temperature processing, after water scrubbing, drying, a goal product is obtained. This invention overcomes the drawbacks that the aromatic polyamide fiber existing in the prior art is difficult to stain, the dye can only be fixed in the fiber material, the blended aromatic polyamide yarn must be stained for a plurality of times; products made by the aromatic polyamide fiber stained by the invention makes has soft feeling, low formaldehyde content, and that the color fastness achieves the national standards; the product quality is stable, the product is suitable for the industrialization production, can satisfy the dyeing request of weave, knitting, color weave, and colored yarns, the dyeing cost is reduced, the color brightness is enhanced and the small batch multi-variety production of a plurality of fabrics as the color weave and so on is satisfied.

Description

Technical field [0001] The invention belongs to the technical field of dyeing and finishing, and particularly relates to a method for dyeing aromatic polyamide fibers. Background technique [0002] The product made of the aromatic polyamide fiber of the present invention has outstanding heat resistance and flame resistance, and the strength loss is less than 5% when heated in hot air at 300°C for 100 hours. In addition, it has good electrical insulation and radiation resistance, which can be widely used in space suits, flight ventilating suits, special military uniforms, military tarpaulins, firefighting suits, fire fighting suits, furnace overalls, welding overalls, forest overalls, Knitted and woven products such as pressure equalizing clothing, radiation protection overalls, chemical protection clothing, high-pressure shielding clothing, hotel textiles and life-saving passages, fire curtains, and fire gloves. Due to the difficulty of dyeing of aromatic polyamide, the dyeing of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P3/24D06B3/02D06C7/00
Inventor 龚平
Owner 龚平