Preparation of nano black carbon and use of nano black carbon in fabric dyeing

Abstract

The invention relates to a nano-carbon black preparation method and an application of nano-carbon black in fabric dyeing, belonging to the technical field of textile chemical engineering. The preparation method is characterized in that an ultrasonic technique is utilized to prepare the nano-carbon black, so as to obtain a nano-carbon black pigment dispersion system with good dispersivity and high stability; the prepared nano-carbon black pigment dispersion system can be used for dyeing natural cellulose fiber and regenerated cellulose fiber fabrics; and the dyed fabrics are pure in color, good in jet-black degree and excellent in color fastness. The preparation method has the advantages of simple process, low cost and little pollution.

Description

technical field

[0001] The invention relates to a preparation method of nanometer carbon black and its application in fabric dyeing, and belongs to the technical field of textile chemical industry. Background technique

[0002] Textile black dyeing has always had some problems in dye shade control, process conditions, etc. For example, cellulose fiber fabrics are often dyed black with sulfur dyes. The process is long and the sewage discharge is large, which causes great harm to the environment. Reactive dye black has good dyeing fastness and simple process, but the dye depth is poor, it is difficult to obtain jet black color, and the utilization rate of dye is low, and the environmental pollution is serious.

[0003] How to improve the depth of black dyed fabrics and obtain black fabrics with pure color and good blackness is a problem that the printing and dyeing industry has always been concerned about. CN1436816 discloses a preparation method of an environmentally friend...

Examples

Embodiment 1

[0034] The invention prepares a nanometer carbon black coating and utilizes the nanometer carbon black coating for cotton knitted fabric (140g / m 2 ) method for dyeing. The following process steps are used:

[0035] 1. Preparation of nanocarbon black

[0036] Mix 10g of carbon black, 5g of dispersant A (alkylnaphthalene sulfonate formaldehyde condensate) and 85g of deionized water, and then sonicate for 30min under 700W power on an ultrasonic cell disintegrator to obtain the water of the nano-carbon black pigment. dispersion system.

[0037] The particle size of the nano carbon black prepared by the above method is 134.7 nm, and the Zeta potential is -52.4 mV.

[0038] 2. Dyeing of nano carbon black

[0039] (a) Fabric pretreatment: cationic modification is carried out on the fabric, and the modification process is as follows: the dosage of cationic modifier is 20 g / l, the pH is 12, the temperature is 30 °C, and the time is 50 min.

[0040] (b) Preparation of carbon black ...

Embodiment 2

[0044] The invention prepares a nanometer carbon black coating and utilizes the nanometer carbon black coating for cotton woven fabrics (160 g / m 2) method for dyeing. The following process steps are used:

[0045] 1. Preparation of nanocarbon black

[0046] Mix 20g of carbon black, 8g of dispersant C (alkaline sodium lignosulfonate) and 72g of deionized water, and then sonicate for 80min on an ultrasonic cell disintegrator at a power of 800W to obtain a water dispersion system of nano-carbon black pigment. .

[0047] The particle size of the nano carbon black prepared by the above method is 128.4 nm, and the Zeta potential is -50.2 mV.

[0048] 2. Dyeing of nano carbon black

[0049] (a) Fabric pretreatment: cationic modification is carried out on the fabric, and the modification process is as follows: the dosage of cationic modifier is 8g / l, the pH is 11, the temperature is 60°C, and the time is 40min.

[0050] (b) Preparation of carbon black dye solution: The nano-carbo...

Embodiment 3

[0054] The invention prepares a nanometer carbon black coating and utilizes the nanometer carbon black coating for viscose woven fabric (210g / m 2 ) method for dyeing. The following process steps are used:

[0055] 1. Preparation of nanocarbon black

[0056] 12g of carbon black, 3g of dispersant PVP (polyvinylpyrrolidone) and 85g of deionized water were mixed uniformly, and then ultrasonicated for 100min under the power of 600W on an ultrasonic cell disintegrator to obtain a water dispersion system of nano-carbon black pigment.

[0057] The particle size of the nano carbon black prepared by the above method is 135.6 nm, and the Zeta potential is -54.1 mV.

[0058] 2. Dyeing of nano carbon black

[0059] (a) Fabric pretreatment: cationic modification is carried out on the fabric. The modification process is as follows: the amount of cationic modifier is 12g / l, pH=10, the fabric is immersed in the modification solution for 10min, and then padding, pressure: 2.6 kg / cm 2 , Rol...

technical field

[0001] The invention relates to a preparation method of nanometer carbon black and its application in fabric dyeing, and belongs to the technical field of textile chemical industry. Background technique

[0002] Textile black dyeing has always had some problems in dye shade control, process conditions, etc. For example, cellulose fiber fabrics are often dyed black with sulfur dyes. The process is long and the sewage discharge is large, which causes great harm to the environment. Reactive dye black has good dyeing fastness and simple process, but the dye depth is poor, it is difficult to obtain jet black color, and the utilization rate of dye is low, and the environmental pollution is serious.

[0003] How to improve the depth of black dyed fabrics and obtain black fabrics with pure color and good blackness is a problem that the printing and dyeing industry has always been concerned about. CN1436816 discloses a preparation method of an environmentally friend...

Examples

Embodiment 1

[0034] The invention prepares a nanometer carbon black coating and utilizes the nanometer carbon black coating for cotton knitted fabric (140g / m 2 ) method for dyeing. The following process steps are used:

[0035] 1. Preparation of nanocarbon black

[0036] Mix 10g of carbon black, 5g of dispersant A (alkylnaphthalene sulfonate formaldehyde condensate) and 85g of deionized water, and then sonicate for 30min under 700W power on an ultrasonic cell disintegrator to obtain the water of the nano-carbon black pigment. dispersion system.

[0037] The particle size of the nano carbon black prepared by the above method is 134.7 nm, and the Zeta potential is -52.4 mV.

[0038] 2. Dyeing of nano carbon black

[0039] (a) Fabric pretreatment: cationic modification is carried out on the fabric, and the modification process is as follows: the dosage of cationic modifier is 20 g / l, the pH is 12, the temperature is 30 °C, and the time is 50 min.

[0040] (b) Preparation of carbon black ...

Embodiment 2

[0044] The invention prepares a nanometer carbon black coating and utilizes the nanometer carbon black coating for cotton woven fabrics (160 g / m 2) method for dyeing. The following process steps are used:

[0045] 1. Preparation of nanocarbon black

[0046] Mix 20g of carbon black, 8g of dispersant C (alkaline sodium lignosulfonate) and 72g of deionized water, and then sonicate for 80min on an ultrasonic cell disintegrator at a power of 800W to obtain a water dispersion system of nano-carbon black pigment. .

[0047] The particle size of the nano carbon black prepared by the above method is 128.4 nm, and the Zeta potential is -50.2 mV.

[0048] 2. Dyeing of nano carbon black

[0049] (a) Fabric pretreatment: cationic modification is carried out on the fabric, and the modification process is as follows: the dosage of cationic modifier is 8g / l, the pH is 11, the temperature is 60°C, and the time is 40min.

[0050] (b) Preparation of carbon black dye solution: The nano-carbo...

Embodiment 3

[0054] The invention prepares a nanometer carbon black coating and utilizes the nanometer carbon black coating for viscose woven fabric (210g / m 2 ) method for dyeing. The following process steps are used:

[0055] 1. Preparation of nanocarbon black

[0056] 12g of carbon black, 3g of dispersant PVP (polyvinylpyrrolidone) and 85g of deionized water were mixed uniformly, and then ultrasonicated for 100min under the power of 600W on an ultrasonic cell disintegrator to obtain a water dispersion system of nano-carbon black pigment.

[0057] The particle size of the nano carbon black prepared by the above method is 135.6 nm, and the Zeta potential is -54.1 mV.

[0058] 2. Dyeing of nano carbon black

[0059] (a) Fabric pretreatment: cationic modification is carried out on the fabric. The modification process is as follows: the amount of cationic modifier is 12g / l, pH=10, the fabric is immersed in the modification solution for 10min, and then padding, pressure: 2.6 kg / cm 2 , Rol...