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Nylon fiber with high color fastness to light, dyeing method of nylon fiber and preparation method of dye mother liquor

A technology of nylon fiber and dyeing method, which is applied in the direction of dyeing, textiles and papermaking, etc., can solve the problems of nylon fiber elastic damage, easy yellowing, easy fading, etc., to achieve protection strength and performance, high light fastness, color light good stability effect

Pending Publication Date: 2022-04-29
苏州中纺学面料产业研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

High temperature conditions are not only high energy consumption and high cost, but also the elasticity of nylon fibers is easily damaged under high temperature conditions, and the strength of fibers is reduced. Therefore, how to realize the medium and low temperature dyeing of nylon fibers has become a research direction
In addition, the disadvantage of nylon is that its light fastness is poor, it is easy to turn yellow after being exposed to the sun, and its strength will decrease accordingly. In addition, in the normal washing process, it is easy to fade after being soaked in 84 disinfectant

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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  • Nylon fiber with high color fastness to light, dyeing method of nylon fiber and preparation method of dye mother liquor
  • Nylon fiber with high color fastness to light, dyeing method of nylon fiber and preparation method of dye mother liquor
  • Nylon fiber with high color fastness to light, dyeing method of nylon fiber and preparation method of dye mother liquor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] First, pretreat the dye to make a high-concentration leuco dye mother liquor, dilute the high-concentration leuco dye mother liquor by 10 to 60 times with normal temperature water, add an alkali agent and a composite reducing agent, and measure the reduction potential value and pH. Into a leuco dyeing working solution.

[0047] Prepare 100kg of nylon yarn, feed water into the dye vat, the bath ratio of nylon yarn to water is 1:20, add 2g / L sodium hydroxide and 1g / L reducing agent, dilute the dye 20 times into the dye vat in sequence Working liquid 5L, nylon yarn, control the temperature rise rate of 1°C / min to 60°C, keep warm for 25min, then add 10g / L Yuanming powder, keep warm for 10min, wash at room temperature twice, each time for 15min, add hydrogen peroxide 2g / L, run for 25min, finally add dispersant 2g / L, soaping agent 2g / L, carry out soaping, water washing, dehydration out of the vat, and drying to obtain nylon yarn with high light fastness.

Embodiment 2

[0049] First, the dye is pretreated to make a high-concentration leuco dye mother liquor.

[0050] Prepare 100kg of nylon yarn, feed water into the dye vat, the bath ratio of nylon yarn to water is 1:20, add 2g / L sodium hydroxide and 1g / L reducing agent, dilute the dye 20 times into the dye vat in sequence Working liquid 5L, nylon yarn, control the heating rate of 0.5 ℃ / min to 60 ℃, keep warm for 30 minutes, then add 10 g / L of sodium sulfate, keep warm for 10 minutes, wash twice at room temperature, 15 minutes each time, add hydrogen peroxide 2g / L, run for 25min, finally add dispersant 2g / L, soaping agent 2g / L, carry out soaping, water washing, dehydration out of the vat, and drying to obtain nylon yarn with high light fastness.

Embodiment 3

[0052] First, the dye is pretreated to make a high-concentration leuco dye mother liquor.

[0053] Prepare 100kg of nylon yarn, feed water into the dye vat, the bath ratio of nylon yarn to water is 1:20, add 2g / L sodium hydroxide and 1g / L reducing agent, dilute the dye 20 times into the dye vat in sequence Working liquid 5L, nylon yarn, control the heating rate of 1.5°C / min to 60°C, keep warm for 10min, then add 10g / L sodium sulfate, keep warm for 30min, wash twice at room temperature, 15min each time, add hydrogen peroxide 2g / L, run for 25min, finally add dispersant 2g / L, soaping agent 2g / L, carry out soaping, water washing, dehydration out of the vat, and drying to obtain nylon yarn with high light fastness.

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 dyeing method of nylon fibers with high color fastness to light, which comprises the following steps: feeding water into a dye vat to reach a specified liquid amount, sequentially adding an alkaline agent, a composite reducing agent, a pretreated dyeing working solution and nylon fibers at room temperature, then heating to 50-75 DEG C at a heating rate of 0.5-1.5 DEG C / min, and operating for 5-30 minutes while keeping the temperature; after the heat preservation is finished, adding an accelerating agent, continuously operating for 10-30 minutes in a heat preservation manner, and then cooling and discharging liquid; washing the nylon fibers with water for two times at normal temperature after draining, wherein each time lasts for 15-25 minutes; 1-6 g / L of normal-temperature hydrogen peroxide is added for oxidation after water washing, and operation is conducted for 15-30 min; and soaping, washing and drying the oxidized nylon fiber. According to the method, the damage of overhigh temperature to the nylon fiber is avoided, the original strength and performance of the nylon fiber are protected to the maximum extent, the color light stability is good, and the operation is simple and convenient.

Description

technical field [0001] The application relates to the field of textile printing and dyeing technology processing, in particular to a nylon fiber with high light fastness, a dyeing method thereof, and a method for preparing a dye mother liquor. Background technique [0002] Nylon fiber is called nylon in China and is widely used in the textile industry both domestically and internationally. Nylon fiber has good strength and wear resistance, good rebound, low density and good hand feeling, and can be made into many light and thin textiles. For example, yoga clothes, elastic stockings, down jackets, surface fabrics of mountaineering suits or raincoat fabrics, etc. [0003] Dyes for nylon dyeing generally choose acid dyes, disperse dyes, reactive dyes, and neutral dyes. Dyeing is carried out under high temperature conditions above 90°C. High temperature conditions are not only high energy consumption and high cost, but also the elasticity of nylon fibers is easily damaged und...

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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Patent Type & Authority Applications(China)
IPC IPC(8): D06P1/22D06P1/673D06P3/24D06P5/02
CPCD06P1/22D06P1/227D06P1/6735D06P1/67358D06P3/243D06P5/02
Inventor 魏炳举李瑞卿
Owner 苏州中纺学面料产业研究院
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