Method for modification, dyeing and multifunctional composite finishing of aramid fiber

A kind of aramid fiber, multi-functional technology, applied in the direction of dyeing, fiber treatment, physical treatment, etc., can solve the problems of inability to meet continuous production, poor wettability of aramid fiber, long processing time, etc., to achieve good anti-ultraviolet aging, dyeing The effect of low temperature and low processing cost

Inactive Publication Date: 2009-11-04
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its processing time is long and cannot meet the requirements of industrialized continuous production.
Patent CN 200610025829 invented a TiO 2 Anti-ultraviolet finishing solution and its anti-ultraviolet finishing method for aramid fiber. After the aramid fiber is treated by the anti-ultraviolet finishing method, the anti-ultraviolet aging performance of aramid fiber, yarn or fabric is significantly enhanced, but titanium dioxide is used in the application process. prone to bluish
Moreover, aramid as a fabric for firefighting clothing must have good moisture absorption and breathability, but as a synthetic fiber, aramid has poor wettability

Method used

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  • Method for modification, dyeing and multifunctional composite finishing of aramid fiber
  • Method for modification, dyeing and multifunctional composite finishing of aramid fiber
  • Method for modification, dyeing and multifunctional composite finishing of aramid fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Example 1: The sample selected in this example is aramid yarn, the selected pretreatment method is low-temperature plasma pretreatment, the selected dyeing carrier is acetophenone, the selected finishing solution is titanium / zinc composite sol, and the selected The moisture-absorbing and air-permeable finishing agent is silicone.

[0032] Take 20g of aramid yarn and carry out dyeing pretreatment according to the following process: alkali washing (NaOH 6g / L, degreasing agent DO5g / L, liquor ratio 1:20, temperature 100°C, time 45min), water washing, drying, plasma Body pretreatment (2% air, temperature 25°C, power 100W, treatment time 5min, pressure 25Pa).

[0033]Aramid fiber dyeing: put the above-mentioned pretreated aramid fiber into water containing 60 mL / L of acetophenone, the water temperature is 40° C., and the bath ratio is 1:20. Raise the temperature to 70°C at a rate of 1°C / min, and gradually add cationic dyes with a concentration of about 6% (owf) and Na at a c...

Embodiment 2

[0038] Example 2: The sample selected in this example is aramid fabric, the selected pretreatment method is plasma pretreatment, the selected dyeing carrier is benzyl alcohol, the selected finishing solution is silicon / titanium composite sol, and the selected moisture absorption and air-permeable finishing The agent is epoxy resin type hydrophilic finishing agent.

[0039] Take 20g of aramid fabric and carry out dyeing pretreatment according to the following process: alkali washing (NaOH 5g / L, degreasing agent DO4g / L, liquor ratio 1:30, temperature 100°C, time 40min), rinse with water, dry at 80°C, Plasma pretreatment (2% oxygen, temperature 25°C, power 75W, treatment time 10min, pressure 5Pa).

[0040] Aramid fabric dyeing: put the above pretreated aramid fabric into water containing 70 mL / L benzyl alcohol, the water temperature is 50° C., and the bath ratio is 1:30. Raise the temperature to 75°C at a rate of 1°C / min, gradually add cationic dyes with a concentration of about...

Embodiment 3

[0045] Example 3: The sample selected in this example is aramid fabric, the selected pretreatment method is phosphoric acid pretreatment, the selected dyeing carrier is acetophenone, the selected finishing solution is silicon / titanium / zinc composite sol, and the selected moisture absorption The air-permeable finishing agent is a block copolymer of polyester and polyether.

[0046] Take 20g of aramid fabric and carry out dyeing pretreatment according to the following process: alkali washing (NaOH 5g / L, degreasing agent DO5g / L, liquor ratio 1:40, temperature 90°C, time 50min), rinse with water, dry at 70°C, Phosphoric acid pretreatment (phosphoric acid 20%, temperature 100°C, treatment time 50min), rinse with water, and dry.

[0047] Aramid fabric dyeing: put the above pretreated aramid fabric into water containing 70mL / L of acetophenone, the water temperature is 55°C, and the bath ratio is 1:25. Raise the temperature to 70°C at a rate of 1°C / min, and gradually add cationic dye...

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Abstract

The invention discloses a method for modification, dyeing and multifunctional composite finishing of aramid fiber, and belongs to the technical field of textile chemical industry. Through surface physical and chemical modification for the aramid fiber, the method improves the physical and chemical states of the aramid fiber surface and is favorable for the dyeing and after finishing of the aramid fiber. The specific process flow comprises the following steps of cleaning before the dyeing of the aramid fiber, pretreatment of the aramid fiber, dyeing of the aramid fiber, and multifunctional composite finishing of the aramid fiber. Not only the dyeing property of the aramid fiber treated by the method is remarkably improved, but also the dyeing fastness is good, the aramid fiber has good moisture permeability particularly, and simultaneously the aramid fiber is endued with good anti-ultraviolet ageing function. Moreover, the aramid fiber is subjected to composite finishing by adopting a nano composite sol, and the method has wide applicability, simple process, relatively low treatment cost, and low requirements on the applied technology and equipment.

Description

technical field [0001] The invention discloses a method for modifying, dyeing and multifunctional composite finishing of aramid fiber, which belongs to the technical field of textile chemical industry. Background technique [0002] Kevlar is poly-p-phenylene terephthalamide fiber, aliased as aramid resin and aramid fiber, also known as Kevlar, which belongs to aromatic polyamide. It was first successfully developed by DuPont in the United States in the 1960s. Due to its special structure, aramid fiber has excellent high temperature resistance and flame retardancy, so it is widely used in firefighting clothing and military protective clothing, and is a strategic material. However, as clothing for special industries such as firefighting, special signs and colors are required to identify and search for emergency and chaotic scenes. However, because the rigid polymer chain of aramid fiber is highly crystalline and has no active groups on the surface, and its glass transition te...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P3/24D06P3/26D06P1/673D06M10/06D06M11/79D06M11/46D06M15/55D06M15/53
Inventor 范雪荣汤克明王平王强崔莉
Owner JIANGNAN UNIV
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