Thermosol dyeing method taking decamethylcyclopentasiloxane (D5) as medium

Abstract

The invention discloses a disperse dye thermosol dyeing method taking decamethylcyclopentasiloxane (D5) as a medium. The method comprises the following steps: (1) pretreating polyester fabric; (2) adding a certain amount of pure disperse dyes into a dyeing medium D5, controlling the amount of the dyeing medium D5, so that a ratio of the weight of a to-be-dyed fabric to the weight of the medium D5 is 1:10 to 1:30, dyeing in a dyeing machine, heating the system to 90-100 DEG C, preserving the temperature for 5-10 minutes, heating to the temperature of 180-200 DEG C, and performing thermosol fixation, wherein the fixation time is 10-30 minutes; and (3) performing reduction clearing on the dyed fabric according to a GB2394-80 method after dyeing. According to the method, non-aqueous medium dyeing is adopted, lots of water resources are saved, the thermosol temperature can be obtained under normal pressure, the conventional dyeing equipment can be adopted, the operation is simple, pure disperse dyes are adopted for dyeing, lots of dispersing aids are saved, the utilization rate of the dyes is improved, wastewater emission is reduced, and ecological environment protection is facilitated.

Description

technical field

[0001] The invention belongs to the technical field of dyeing and finishing, and in particular relates to a method for hot-melt dyeing polyester fabrics with disperse dyes using decamethylcyclopentasiloxane (D5) as a medium. Background technique

[0002] In the dyeing of polyester, disperse dyes are generally used for dyeing. Since polyester has a tight molecular structure and is a hydrophobic fiber, in conventional dyeing, water is used as the medium, and auxiliary agents such as dispersants need to be added. Therefore, in the whole dyeing process, a large amount of dyeing wastewater is produced, which not only consumes a large amount of water resources, but also causes great pollution to the ecological environment. According to statistics, in my country, the textile industry ranks fourth in terms of sewage discharge, of which printing and dyeing wastewater accounts for 80%, and more than 700 million tons of wastewater are discharged every year. At the same ...

Examples

Embodiment 1

[0029] A kind of heat-melt dyeing method taking D5 as medium, method is as follows:

[0030] (1) Pretreatment of polyester fabric:

[0031] The polyester fabric is pretreated, and the treatment process is as follows: the fabric weighs 50g, is treated in 30°C water for 1.5 hours, and then dried at 25°C for 30 minutes.

[0032] (2) Dyeing formula:

[0033] Disperse Dyes (C.I Disperse Carnelian): 1.0% (o.w.f);

[0034] Fabric weight: 50g;

[0035] Bath ratio: 1:20;

[0036] Dyeing time: 30min.

[0037] (3) Dyeing process:

[0038] Dye in an overflow dyeing machine, enter the dyeing at room temperature, raise the temperature to 90°C at 3°C / min, then raise the temperature to 190°C at 2°C / min and keep the temperature for 30 minutes for hot-melt color fixation, and cool down at 2°C / min After reaching 60°C, carry out reduction cleaning, and finally wash with water and dry.

[0039] (4) Reduction cleaning:

[0040] The dyed fabric is subjected to reduction cleaning according to...

Embodiment 2

[0045] A kind of heat-melt dyeing method taking D5 as medium, method is as follows:

[0046] (1) Pretreatment of polyester fabric:

[0047] The polyester fabric is pretreated, and the treatment process is as follows: the fabric weighs 50g, is treated in 30°C water for 1.5 hours, and then dried at 25°C for 30 minutes.

[0048] (2) Dyeing formula:

[0049] Disperse dyes (C.I Disperse Blue 183): 1.0% (o.w.f);

[0050] Fabric weight: 50g;

[0051] Bath ratio: 1:20;

[0052] Dyeing time: 30min.

[0053] (3) Dyeing process:

[0054] Dye in an axial flow dyeing machine, enter the dyeing at room temperature, heat up to 90°C at 3°C / min, then heat up to 190°C at 2°C / min and keep the temperature for 30 minutes for heat-melt color fixation, and cool down at 2°C / min After reaching 60°C, carry out reduction cleaning, and finally wash with water and dry.

[0055] (4) Reduction cleaning:

[0056] The dyed fabric is subjected to reduction cleaning according to the GB2394-80 method. The ...

Embodiment 3

[0060] A kind of heat-melt dyeing method taking D5 as medium, method is as follows:

[0061] (1) Pretreatment of polyester fabric:

[0062] The polyester fabric is pretreated, and the treatment process is as follows: the fabric weighs 50g, is treated in 30°C water for 1.5 hours, and then dried at 25°C for 30 minutes.

[0063] (2) Dyeing formula:

[0064] Disperse dyes (C.I Disperse Blue 79): 1.0% (o.w.f);

[0065] Fabric weight: 50g;

[0066] Bath ratio: 1:20;

[0067] Dyeing time: 30min.

[0068] (3) Dyeing process:

[0069] Dye in a jet dyeing machine, enter the dyeing at room temperature, raise the temperature to 90°C at 3°C / min, then raise the temperature to 190°C at 2°C / min and keep the temperature for 30 minutes for hot-melt color fixation, and cool down to 2°C / min After 60°C, carry out reduction cleaning, and finally wash with water and dry.

[0070] (4) Reduction cleaning:

[0071] The dyed fabric is subjected to reduction cleaning according to the GB2394-80 me...

technical field

[0001] The invention belongs to the technical field of dyeing and finishing, and in particular relates to a method for hot-melt dyeing polyester fabrics with disperse dyes using decamethylcyclopentasiloxane (D5) as a medium. Background technique

[0002] In the dyeing of polyester, disperse dyes are generally used for dyeing. Since polyester has a tight molecular structure and is a hydrophobic fiber, in conventional dyeing, water is used as the medium, and auxiliary agents such as dispersants need to be added. Therefore, in the whole dyeing process, a large amount of dyeing wastewater is produced, which not only consumes a large amount of water resources, but also causes great pollution to the ecological environment. According to statistics, in my country, the textile industry ranks fourth in terms of sewage discharge, of which printing and dyeing wastewater accounts for 80%, and more than 700 million tons of wastewater are discharged every year. At the same ...

Examples

Embodiment 1

[0029] A kind of heat-melt dyeing method taking D5 as medium, method is as follows:

[0030] (1) Pretreatment of polyester fabric:

[0031] The polyester fabric is pretreated, and the treatment process is as follows: the fabric weighs 50g, is treated in 30°C water for 1.5 hours, and then dried at 25°C for 30 minutes.

[0032] (2) Dyeing formula:

[0033] Disperse Dyes (C.I Disperse Carnelian): 1.0% (o.w.f);

[0034] Fabric weight: 50g;

[0035] Bath ratio: 1:20;

[0036] Dyeing time: 30min.

[0037] (3) Dyeing process:

[0038] Dye in an overflow dyeing machine, enter the dyeing at room temperature, raise the temperature to 90°C at 3°C / min, then raise the temperature to 190°C at 2°C / min and keep the temperature for 30 minutes for hot-melt color fixation, and cool down at 2°C / min After reaching 60°C, carry out reduction cleaning, and finally wash with water and dry.

[0039] (4) Reduction cleaning:

[0040] The dyed fabric is subjected to reduction cleaning according to...

Embodiment 2

[0045] A kind of heat-melt dyeing method taking D5 as medium, method is as follows:

[0046] (1) Pretreatment of polyester fabric:

[0047] The polyester fabric is pretreated, and the treatment process is as follows: the fabric weighs 50g, is treated in 30°C water for 1.5 hours, and then dried at 25°C for 30 minutes.

[0048] (2) Dyeing formula:

[0049] Disperse dyes (C.I Disperse Blue 183): 1.0% (o.w.f);

[0050] Fabric weight: 50g;

[0051] Bath ratio: 1:20;

[0052] Dyeing time: 30min.

[0053] (3) Dyeing process:

[0054] Dye in an axial flow dyeing machine, enter the dyeing at room temperature, heat up to 90°C at 3°C / min, then heat up to 190°C at 2°C / min and keep the temperature for 30 minutes for heat-melt color fixation, and cool down at 2°C / min After reaching 60°C, carry out reduction cleaning, and finally wash with water and dry.

[0055] (4) Reduction cleaning:

[0056] The dyed fabric is subjected to reduction cleaning according to the GB2394-80 method. The ...

Embodiment 3

[0060] A kind of heat-melt dyeing method taking D5 as medium, method is as follows:

[0061] (1) Pretreatment of polyester fabric:

[0062] The polyester fabric is pretreated, and the treatment process is as follows: the fabric weighs 50g, is treated in 30°C water for 1.5 hours, and then dried at 25°C for 30 minutes.

[0063] (2) Dyeing formula:

[0064] Disperse dyes (C.I Disperse Blue 79): 1.0% (o.w.f);

[0065] Fabric weight: 50g;

[0066] Bath ratio: 1:20;

[0067] Dyeing time: 30min.

[0068] (3) Dyeing process:

[0069] Dye in a jet dyeing machine, enter the dyeing at room temperature, raise the temperature to 90°C at 3°C / min, then raise the temperature to 190°C at 2°C / min and keep the temperature for 30 minutes for hot-melt color fixation, and cool down to 2°C / min After 60°C, carry out reduction cleaning, and finally wash with water and dry.

[0070] (4) Reduction cleaning:

[0071] The dyed fabric is subjected to reduction cleaning according to the GB2394-80 me...

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