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Low-temperature dyeing method for high-performance fabric

A low-temperature dyeing and high-performance technology, which is applied in the field of textile printing and dyeing, can solve the problems of not being able to fully exert the carrier effect, and achieve the effect of increasing fiber surface roughness and porosity, strong electronegativity, and increasing surface roughness and porosity

Inactive Publication Date: 2019-08-16
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its shortcoming is that this method only relies on the carrier to realize the dyeing of polyimide, and cannot give full play to the effectiveness of the carrier.

Method used

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  • Low-temperature dyeing method for high-performance fabric

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Take 3g of meta-aramid fabric, use C.I.Disperse Red 54 as the dye, and prepare a pretreatment solution at a liquor ratio of 1:20. The mass percent of N,N-dimethylacetamide in the pretreatment solution is 10%, and the mass percent of sodium silicate is 0.5%, the mass percentage of distilled water sodium silicate is 89.5%, the pretreatment liquid is mixed and stirred at 200 rpm for 3 minutes to form a pretreatment liquid, and the temperature is raised to 40°C, and the prepared meta-aramid fabric is added. Continue to heat up to 50°C and keep it warm for 30 minutes, then use 10% sodium hydroxide solution to adjust the pH value of the pretreatment solution containing meta-aramid fabrics to 7 at a rate of 2 drops / min, then add 0.5% owf dye, and stir evenly , heated to 70°C, kept warm for 60 minutes, drained, washed, and dried to obtain a dyed meta-aramid fabric. The effect is shown in Table 1.

Embodiment 2

[0032] Take 3g of meta-aramid fabric, use C.I.Disperse Red 54 as the dye, and prepare a pretreatment liquid at a liquor ratio of 1:20. The mass percentage of N,N-dimethylacetamide in the pretreatment liquid is 30%, and the mass percentage of sodium silicate is 10%, and the mass percentage of distilled sodium silicate is 60%. After the pretreatment liquid is mixed, it is stirred at 200 rpm for 3 minutes to form a pretreatment liquid. The temperature is raised to 40°C, and the prepared meta-aramid fabric is added. Continue to heat up to 60°C and keep it warm for 30 minutes, then use 10% sodium hydroxide solution to adjust the pH value of the pretreatment solution containing meta-aramid fabrics to 9 at a rate of 2 drops / min, then add 5% owf dye, and stir evenly , heated up to 80°C, kept warm for 60 minutes, drained, washed, and dried to obtain a dyed meta-aramid fabric. The effect is shown in Table 1.

Embodiment 3

[0034]Take 3g of meta-aramid fabric, use C.I.Disperse Red 54 as the dye, and prepare a pretreatment liquid at a liquor ratio of 1:20. The mass percentage of N,N-dimethylacetamide in the pretreatment liquid is 50%, and the mass percentage of sodium silicate is The mass percentage of sodium silicate in distilled water is 30%. After the pretreatment solution is mixed, it is stirred at 200 rpm for 3 minutes to form a pretreatment solution. The temperature is raised to 40°C, and the prepared meta-aramid fabric is added. Continue to heat up to 70°C and keep it warm for 30 minutes, then use 10% sodium hydroxide solution to adjust the pH value of the pretreatment solution containing meta-aramid fabrics to 11 at a rate of 2 drops / min, then add 10% owf dye, and stir evenly , heated up to 90°C, kept warm for 60 minutes, drained, washed, and dried to obtain a dyed meta-aramid fabric. The effect is shown in Table 1.

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Abstract

The invention relates to a low-temperature dyeing method for high-performance fabric, and belongs to the technical field of textile printing and dyeing. According to the method, silicic acid gel generated by hydrolyzing sodium silicate is adopted in the dyeing process of the high-performance fabric. N,N-dimethylacetamide is enriched in the silicic acid gel which is adsorbed on the fiber surface ofthe fabric. At 50-70 DEG C, N,N-dimethylacetamide opens part of hydrogen bonds between macromolecules on the surface of the high-performance fiber, and surface roughness and porosity of the fiber areincreased; then under the action of sodium hydroxide, the silicic acid gel adsorbed on the surface of the high-performance fabric is dissolved, and N,N-dimethylacetamide is released. Under the condition of low temperature dyeing at 70-90 DEG C, N,N-dimethylacetamide has strong polarity, and can effectively increase dissolution concentration of dye and reduce micelle concentration. Dye molecules are easily adsorbed and dye the high-performance fabric, and dyeing efficiency of the high-performance fabric is effectively improved. Besides, better dyeing effect can be achieved with the method at relatively low dyeing temperature, and thus, production cost and energy consumption are reduced.

Description

technical field [0001] The invention relates to a method for low-temperature dyeing of high-performance fabrics, belonging to the technical field of textile printing and dyeing. Background technique [0002] High-performance fibers are widely used in various industries due to their excellent performance. Common ones include meta-aramid fiber, para-aramid fiber, polyimide fiber and polyarylate fiber. The dyeing properties of these fibers are poor, which is unfavorable for their application. At present, the commonly used dyeing methods for such fibers include surface modification dyeing, dope dyeing, and carrier dyeing. Chinese Patent Publication No. CN102587160A, dated July 18, 2012, the name of the invention is a dyeing method for aromatic polyamide fibers, the application discloses the use of sodium hydroxide to pretreat aromatic polyamide fibers, In the method of carrier dyeing, in the pretreatment step of the application, sodium hydroxide hydrolyzes the terminal anhydri...

Claims

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Application Information

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IPC IPC(8): D06P1/16D06P1/673D06P1/649D06P3/02D06P3/26D06P3/54
CPCD06P1/16D06P1/6495D06P1/67383D06P3/024D06P3/26D06P3/54
Inventor 曹根阳陈欣盛丹刘冰倩王运利徐卫林
Owner WUHAN TEXTILE UNIV
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