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Dyeing method for nylon-56 fibers

A dyeing method and technology of nylon, which is applied in dyeing, textiles and papermaking, and can solve the problems of fiber strength decline, acid and alkali resistance difference, etc.

Active Publication Date: 2016-08-24
优纤科技(丹东)有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the difference in acid and alkali resistance of the more mature additives used in nylon 6 and nylon 66, when used in the dyeing process of nylon 56, the fiber strength will drop too much after dyeing.

Method used

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  • Dyeing method for nylon-56 fibers
  • Dyeing method for nylon-56 fibers
  • Dyeing method for nylon-56 fibers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment 1, nylon 56 fiber dyeing

[0033] According to the bath ratio of 1:50 (mass ratio of nylon 56 fiber to dye liquor), dye (2% owf), leveling agent O-15 (1g / L) and acid release agent (1g / L) were prepared into dye liquor, according to figure 1 In the middle dyeing process curve, the dyeing experiments were carried out at 50°C, 60°C, 65°C, 70°C, 80°C and 90°C respectively for half an hour.

[0034] The dye used is weak acid brilliant red B (C.I.Acid Red 249), and the test results after dyeing are shown in Table 2:

[0035] Table 2 Color fastness index of dyed nylon 56 fiber

[0036]

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PUM

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Abstract

The invention discloses a dyeing method for nylon-56 fibers. The dyeing method comprises the following steps that 1, dye liquor is prepared, wherein the dye liquor is prepared from acid dye, a leveling agent O and an acid-releasing agent shown in a formula I; 2, the nylon-56 fibers are immersed into the dye liquor, and dyeing is achieved at the temperature of 50 DEG C-90 DEG C. According to the dyeing method, the acid-releasing agent can be gradually decomposed into polyether and butanedioic acid at high temperature (higher than or equal to 50 DEG C), the pH value in a dyeing bath is controllably decreased by regulating the adopted polyether structure, therefore, the pH value of the nylon-56 fibers is gradually decreased to 3.5-4 from 6.5-7 in the initial dyeing stage, and the dyeing process is carried out smoothly and slowly.

Description

technical field [0001] The invention relates to a dyeing method of nylon 56 fiber. 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 hexamethylene diamine. ...

Claims

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Application Information

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IPC IPC(8): D06P1/39D06P1/613D06P1/44D06P3/24
CPCD06P1/39D06P1/445D06P1/613D06P3/001D06P3/241
Inventor 郝新敏鞠景堂赵鹏程严欣宁宋明志仇凯
Owner 优纤科技(丹东)有限公司
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