A kind of alkaline bath dyeing method of nylon 56 fiber fabric

A dyeing method and nylon technology, applied in the field of alkaline bath dyeing, to achieve the effect of reducing damage

Active Publication Date: 2019-02-01
THE QUARTERMASTER EQUIPMENT RESEARCH INSTITUTE OF THE GENERAL LOGISITIC DEPARTME +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The general dyeing temperature of nylon 66 is 40-98°C, and the dyeing temperature of nylon 56 fiber fabric can be reduced to 40-80°C. There is no disclosure of related technologies for the low-temperature dyeing method of nylon 56 fabric in an alkaline bath

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1, K type reactive dye dyeing

[0031] Nylon 56 dyeing is suitable for reactive dyes of high temperature type K.

[0032] Put 20D×20D×350T nylon 56 fabric into the overflow dyeing machine, adjust the water temperature in the dyeing machine to start the cycle at 40°C, mix K-type reactive dye (20g / L) and sodium sulfate (40g / L) during dyeing Add the finished dye solution into the dyeing machine and slowly raise the temperature for 1°C / 1 minute to 60°C, add 20g / l of sodium carbonate to adjust the pH value to 10, then continue to raise the temperature at 1°C / min to 80°C and keep it warm for 60 minutes to continue dyeing. After the color is qualified, post-processing is carried out.

[0033] The various color fastness indexes of the fabrics dyed in this embodiment are as shown in Table 1.

[0034] It can be seen from the data in Table 1 that the fastness of dyeing meets the requirements.

Embodiment 2

[0035] Embodiment 2, the dyeing of vat dye

[0036] 45×45 / 130×70 nylon 56 fabric, dyeing nylon 56 with vat dyes on a continuous pad dyeing machine.

[0037] Two dipping and two padding vat dye suspension liquid → infrared drying at 90°C → normal temperature, one dipping and one rolling reducing solution (aqueous solution of caustic soda and sodium hydrosulfite (sodium dithionite), wherein the mass-volume concentration of caustic soda is 20g / l, sodium hydrosulfite The mass-volume concentration is 34g / l) → steamed at 102°C for 60 seconds → washed with water → oxidized at 55°C, hydrogen peroxide (30wt%) 1g / l → soaped at 95°C, soap 5g / l, soda ash 3g / l → post-treatment .

[0038] The various color fastness indexes of the fabrics dyed in this embodiment are as shown in Table 1.

[0039] It can be seen from the data in Table 1 that the fastness of dyeing meets the requirements.

[0040] Table 1 Color fastness index of dyed nylon 56 fabric

[0041] Name item

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Abstract

The invention discloses a method for basic bath dyeing of nylon 56 fiber fabric. According to the method, the nylon 56 fiber fabric is dyed with vat dye or activated dye, wherein the nylon 56 fiber fabric is nylon 56 filament or nylon 56 short fiber fabric. Due to the difference in crystallization, the acid-base resistance of nylon 56 is quite different from that of ordinary nylon 6 and nylon 66. Under the same treatment condition, the fiber strength of nylon 56 is much lower, and thus nylon 6 and nylon 66 dyeing processes which are mostly studied are not completely applicable to dyeing of nylon 56. In the method, activated dye and nylon 56 are boned through covalent bonds, firmness is higher than that of ionic bonding in an acid bath, dyeing temperature is lower than that of a conventional dyeing method, and damage to fabric can be reduced by the adoption of low-temperature dyeing.

Description

technical field [0001] The invention relates to an alkaline bath dyeing method of nylon 56 fiber fabric. Background technique [0002] Nylon fabric is the first synthetic fiber to appear in the world. The appearance of nylon (foreign names include nylon, nylon, capron, etc.) makes textile fabrics look brand new. Its synthesis is a major breakthrough in the synthetic fiber industry. Nylon is a poly The domestic product name of amide fiber, it has many varieties, but the molecular structure contains the same amide group. The commonly used varieties are polycaprolactam for nylon-6, and polycaprolactam for nylon-66, which is formed by the polymerization of hexamethylenediamine and adipic acid. , Nylon 56 is a new type of polyamide fiber. Unlike nylon 66, which uses petroleum raw materials, it uses biological raw materials. Pentamethylenediamine is fermented from various starches and straw cellulose by bioengineering methods. Due to large quantities , low cost, it can replace he...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06P1/22D06P1/38D06P1/673D06P3/24
CPCD06P1/22D06P1/38D06P1/67375D06P3/243D06P3/248
Inventor 郝新敏鞠景堂赵鹏程严欣宁倪成涛仇凯
Owner THE QUARTERMASTER EQUIPMENT RESEARCH INSTITUTE OF THE GENERAL LOGISITIC DEPARTME
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