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Carrier dyeing method of para-aramid fibers

A technology of para-aramid fiber and carrier dyeing, which is applied in dyeing method, fiber treatment, liquid/gas/vapor fiber/cotton sliver/roving treatment, etc. Inability to penetrate dyeing and other problems, to achieve the effect of short process, increased specific surface area, and simple process

Active Publication Date: 2014-01-08
SHAANXI YUANFENG TEXTILE TECH RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a carrier dyeing method for para-aramid fiber, which solves the problems of low dyeing rate, impossibility of through-dyeing, and inability to dye medium-dark color in existing para-aramid fiber dyeing

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Mechanically comb the fibrils to be dyed.

[0032] Process flow: air duct feeding→A036C cotton opener→A092A cotton feeder→A076C lapping machine→A186H carding machine.

[0033] Technical measures taken:

[0034] Cotton opening and cleaning process: Since the para-aramid fiber is a medium-length fiber, it has the characteristics of no impurities and only a small amount of doubling, bunching, and hard filaments. Or the short process route of two boxes and two knives without falling, more combing and less punching, and full opening. The process parameters are: beater speed: 700r / min, porcupine beater speed: 400r / min.

[0035] Carding process: The carding process adopts the process principle of "light weight, slow speed, large speed ratio, strong transfer, more carding, less damage and less shedding". Process parameters are: cylinder speed 330r / min, licker-in speed: 750r / min, doffer speed: 20r / min.

[0036] (2) Dyeing the carded fibers. Put the fiber to be dyed into...

Embodiment 2

[0038] (1) Mechanically comb the fibrils to be dyed.

[0039] Process flow: air duct feeding→A036C cotton opener→A092A cotton feeder→A076C lapping machine→A186H carding machine.

[0040] Technical measures taken:

[0041] Cotton opening and cleaning process: Since the para-aramid fiber is a medium-length fiber, it has the characteristics of no impurities and only a small amount of doubling, bunching, and hard filaments. Or the short process route of two boxes and two knives without falling, more combing and less punching, and full opening. The process parameters are: beater speed: 750r / min, porcupine beater speed: 530r / min.

[0042] Carding process: The carding process adopts the process principle of "light weight, slow speed, large speed ratio, strong transfer, more carding, less damage and less shedding". Process parameters are: cylinder speed 280r / min, licker-in speed: 700r / min, doffer speed: 15r / min.

[0043](2) Dyeing the carded fibers. Put the fiber to be dyed into ...

Embodiment 3

[0045] (1) Mechanically comb the fibrils to be dyed.

[0046] Process flow: air duct feeding→A036C cotton opener→A092A cotton feeder→A076C lapping machine→A186H carding machine.

[0047] Technical measures taken:

[0048] Cotton opening and cleaning process: Since the para-aramid fiber is a medium-length fiber, it has the characteristics of no impurities and only a small amount of doubling, bunching, and hard filaments. Or the short process route of two boxes and two knives without falling, more combing and less punching, and full opening. The process parameters are: beater speed: 900r / min, porcupine beater speed: 600r / min.

[0049] Carding process: The carding process adopts the process principle of "light weight, slow speed, large speed ratio, strong transfer, more carding, less damage and less shedding". Process parameters are: cylinder speed 360r / min, licker-in speed: 900r / min, doffer speed: 30r / min.

[0050] (2) Dyeing the carded fibers. Put the fiber to be dyed into...

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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Abstract

The invention discloses a carrier dyeing method of para-aramid fibers. The carrier dyeing method comprises the steps that mechanical carding is conducted on the para-aramid fibers to be dyed; the carded para-aramid fibers are dyed. Mechanical carding has the two functions that firstly, by observing the surface appearances of the fibers through a scanning electron microscope, the facts that after the fibers are carded, under the action of mechanical force, the surfaces become rough, most macromolecular chains are fractured, punctiform pots are produced, and dye absorption and uptake are facilitated can be discovered; secondly, by means of mechanical carding, impurities in the fibers are removed, the fibers become fluffy, the specific surface area of the fibers making contact with dye is increased, and dyeing of the fibers is facilitated. Through research on a dyeing process, the problems that when para-aramid dyeing is conducted at present, the dye-uptake rate is low, dye penetration cannot be achieved, and neutral and deep color dyeing cannot be achieved are solved. Conventional equipment is used in the carrier dyeing method, and the carrier dyeing method has the advantages that processes are simple, environmental friendliness is achieved, procedures are short, and inherent excellent performance of the fibers will not be damaged.

Description

technical field [0001] The invention belongs to the technical field of textile chemistry, and in particular relates to a carrier dyeing method for para-aramid fibers. Background technique [0002] Para-aramid fiber, full name poly-p-phenylene terephthalamide fiber, is a high-tech fiber. The main chain structure of the fiber has a high degree of regularity, and the macromolecules exist in a very stretched state, which has excellent durability. High temperature, fire prevention, chemical corrosion resistance, mechanical properties and fatigue resistance have become important basic raw materials for advanced protective materials and structural materials. The high-tech special fiber with the largest production area, the largest output, and the most promising development has become an important strategic material. The surface of para-aramid fiber is yellow. Due to its special structure, the fiber macromolecular structure is tight, the degree of crystallinity is high, the glass t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01G15/00D06B3/02D06P3/24D06P1/41D06P1/44D06P1/607D06P1/673
Inventor 张生辉肖倩倩
Owner SHAANXI YUANFENG TEXTILE TECH RES
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