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Alkaline dip dyeing method for polyamide 56 fibers and fabrics

A dyeing method and technology of nylon, applied in the field of textile dyeing and finishing, can solve problems such as unfavorable application, high dyeing temperature, fiber and fabric mechanical properties

Pending Publication Date: 2020-10-23
THE QUARTERMASTER RES INST OF THE GENERAL LOGISTICS DEPT OF THE CPLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

High dyeing temperature has a great influence on the mechanical properties of fibers and fabrics, which is not conducive to the application

Method used

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  • Alkaline dip dyeing method for polyamide 56 fibers and fabrics
  • Alkaline dip dyeing method for polyamide 56 fibers and fabrics
  • Alkaline dip dyeing method for polyamide 56 fibers and fabrics

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0082] Example 1. Dyeing enhancement experiment of nylon 56 fiber reduced and exhausted by vat dyeing dry cylinder method

[0083] Dye drying cylinder reduction method: According to the bath ratio of 1:5, take the amount of vat blue RSN dye (1-8)% (o.w.f), caustic soda (2g / L) of 2 / 3 of the total dyeing amount, and 2 / 3 of sodium hydrochloride ( 2g / L), 1 / 3 of water, at 50°C, reduce for 10 minutes to prepare a reducing solution, which is prepared and used immediately;

[0084] Exhaust dyeing process: add 0.2% (o.w.f) retarder JV-905, the remaining 1 / 3 caustic soda, 1 / 3 hydrosulfite, 2 / 3 water when reducing the dye, the pH of the dyeing solution is 8.3, add 2g of the dyed material, and 8°C / min to raise the temperature to 60°C, keep it warm for 20min, cool down and take out the sample, oxidize it in 1g / L hydrogen peroxide at 50°C for 10min, take out the sample and wash it with hot water at 50°C, soaping (soap flakes 1g / L, anhydrous sodium carbonate 1g / L, 50℃, 10min, bath ratio 1:1...

Embodiment 2

[0091] Embodiment 2: dyeing nylon 56 fabric and nylon 66 fabric with different vat dyes

[0092]Full-bath reduction: bath ratio 1:5, take 1.0% (o.w.f) dye vat dye, 3g / L caustic soda, 3g / L hydrosulfite, water at 45°C for 15 minutes to prepare a reducing solution, which is prepared and used immediately;

[0093] Exhaust dyeing process: add 1% (o.w.f) leveling agent MCH-312 to the dyeing solution, the pH of the dyeing solution is 8.1, add 2g of the dyed material, raise the temperature to 60℃ at 5℃ / min, keep it warm for 30min, take out the sample after cooling down, and take out the sample at 50℃ Oxidation treatment in 1g / L hydrogen peroxide at ℃ for 10min, take out the sample and wash it with hot water at 50℃, soaping (soap flakes 3g / L, anhydrous sodium carbonate 3g / L, 50℃, 10min, bath ratio 1:10), rinse with water at room temperature , dry, and finish the staining. Fabric test results after dyeing are shown in Table 3, and the dyeing and penetration results are shown in image...

Embodiment 3

[0096] Embodiment 3, reactive dyes to nylon 56, nylon 66 dyeing rate experiment

[0097] Prepare 1g / L Arnosol Brilliant Blue RV100% dye standard dye solution, prepare 10 groups of 2mL standard dye solution dye baths, fiber 0.2g, bath ratio: 1:500, and 10g / L Yuanming powder, adjust the obtained dye solution When the pH value of the dye reaches 7.5, put it into the dyeing machine with the dyeing temperature set at 60°C, take out the samples after dyeing for 5min, 10min, 15min, 20min, 30min, 45min, 60min, 75min, 90min, and 120min, and rinse them with room temperature water , after drying, strip the color to test its dyeing rate curve.

[0098] The dyeing rate curves of nylon 56 and nylon 66 dyed with reactive dyes are as follows Figure 4 As shown, the dyeing kinetics data of reactive dyes are calculated according to the dyeing rate curve and are shown in Table 4.

[0099] Reactive dye dyeing kinetics data under table 4 alkaline bath

[0100]

[0101] Depend on Figure 4 I...

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Abstract

The invention discloses an alkaline dip dyeing method for polyamide 56 fibers and fabrics. The method has the beneficial effects that (1) the method is applicable to multiple dyestuffs and capable ofrealizing the dyeing of the polyamide fibers through reduced dyes, reactive dyes, direct dyes and sulfur dyes, so that a dyed fabric is bright and deep in color; (2) the color fastness is good, the test results of color fastness, such as resistance to rub, soaping, alkali and perspiration, and sunlight of the dyed fabric can meet the operating requirements, the resistance to friction and soaping reaches up to more than 3 to 4 class, and the color fastness to sunlight can reach up to more than 5 class; (3) the process is simple, quick dyeing can be realized at a low temperature condition, and energy conservation and emission reduction are realized; and (4) by adopting biology-based polyamide fabrics as raw materials, the requirements of green, environmental protection and sustainability aremet, so that the method has an important practical significance.

Description

technical field [0001] The invention relates to an alkaline exhaust dyeing method for nylon 56 fibers and fabrics, belonging to the field of textile dyeing and finishing. Background technique [0002] Nylon (nylon), as the first synthetic fiber to appear in the world, has many varieties, but all of them contain the same amide group in their molecular structure. Commonly used varieties of nylon 6 are polycaprolactam, and nylon 66 is polymerized from hexamethylenediamine and adipic acid. Nylon 56 is a new type of polyamide fiber. Unlike nylon 66, which uses petroleum and other derivatives as raw materials, its raw materials can be prepared from bio-based materials. Pentamethylenediamine is fermented from various starches and straw cellulose through bioengineering methods. Due to large quantities and low cost, it can replace hexamethylenediamine. Bio-based fibers have excellent characteristics such as green, environment-friendly, renewable raw materials, and biodegradation, w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P1/22D06P1/38D06P1/00D06P1/30D06P3/24
CPCD06P1/22D06P1/38D06P1/00D06P1/30D06P3/243D06P3/248D06P3/24
Inventor 郝新敏郭亚飞梁高勇李茂辉闫金龙乔荣荣
Owner THE QUARTERMASTER RES INST OF THE GENERAL LOGISTICS DEPT OF THE CPLA
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