阅读说明：本技术 一种涤棉织物的染色方法 (Dyeing method of polyester-cotton fabric ) 是由 鲍洪尚 于 2019-12-02 设计创作，主要内容包括：本发明公开了一种涤棉织物的染色方法,涉及织物染色技术领域,本发明包括以下步骤：S1预处理：将待染色的涤棉织物浸入预处理液中进行预处理,然后进行水洗,然后脱水；S2涤部分染色：将经S1后的织物浸入所需颜色的碱性染液中,S3棉部分染色：将经S2染色后的涤棉织物浸入到整理液中,以2℃/min的速度升温至60-65℃后保温20-30min,取出水洗后再浸入到活性染料染液中,调节浴比为1:45-1:50,以3-4℃/min的速度升温至85-90℃,保温30-40min,再按活性染料染液的体积加入5-20g/L的纯碱,保温15-20min；S4固色：将经S3后的织物进行汽蒸固色处理,持续10-15min；S5后处理：将经S4后的织物降温至25-30℃,再依次进行初水洗,皂洗和后水洗。(The invention discloses a dyeing method of polyester-cotton fabric, relating to the technical field of fabric dyeing, and comprising the following steps: s1 pretreatment: immersing a polyester-cotton fabric to be dyed into a pretreatment solution for pretreatment, then washing with water, and then dehydrating; s2 polyester part dyeing: immersing the fabric subjected to S1 into an alkaline dye solution with a required color, and partially dyeing S3 cotton: immersing the polyester-cotton fabric dyed by S2 into finishing liquid, heating to 60-65 ℃ at the speed of 2 ℃/min, then preserving heat for 20-30min, taking out, washing, immersing into reactive dye liquor, adjusting the bath ratio to 1:45-1:50, heating to 85-90 ℃ at the speed of 3-4 ℃/min, preserving heat for 30-40min, adding 5-20g/L of soda according to the volume of the reactive dye liquor, and preserving heat for 15-20 min; s4 color fixation: performing steaming color fixation treatment on the fabric subjected to S3 for 10-15 min; and S5 post-processing: and (3) cooling the fabric subjected to S4 to 25-30 ℃, and then sequentially carrying out primary washing, soaping and post-washing.)

1. A dyeing method of polyester-cotton fabric is characterized in that: the method comprises the following steps:

s1 pretreatment: immersing a polyester-cotton fabric to be dyed into a pretreatment solution for pretreatment, then washing with water, and then dehydrating;

s2 polyester part dyeing: soaking the fabric subjected to S1 in alkaline dye solution with required color, adjusting the bath ratio to 1:15-1:20, heating to 90-100 ℃ at the speed of 2 ℃/min, keeping the temperature for 10min, heating to 133-136 ℃ at the speed of 1.7 ℃/min, and keeping the temperature for 20-30 min; cooling to 120-130 deg.C at a rate of 1.7 deg.C/min, cooling to 60-70 deg.C at a rate of 2 deg.C/min, and draining;

partial dyeing of S3 cotton: immersing the polyester-cotton fabric dyed by S2 into finishing liquid, heating to 60-65 ℃ at the speed of 2 ℃/min, then preserving heat for 20-30min, taking out, washing, immersing into reactive dye liquor, adjusting the bath ratio to 1:45-1:50, heating to 85-90 ℃ at the speed of 3-4 ℃/min, preserving heat for 30-40min, adding 5-20g/L of soda according to the volume of the reactive dye liquor, and preserving heat for 15-20 min;

s4 color fixation: performing steaming color fixation treatment on the fabric subjected to S3 for 10-15 min;

and S5 post-processing: and (3) cooling the fabric subjected to S4 to 25-30 ℃, and then sequentially carrying out primary washing, soaping and post-washing.

2. The dyeing method of polyester-cotton fabric according to claim 1, characterized in that: the pretreatment liquid in S1 includes: 6-8g/L of caustic soda, 3-5g/L of hydrogen peroxide, 2-3g/L of hydrogen peroxide stabilizer, 4-6g/L of emulsifier, 2-3g/L of penetrant, 3-4g/L of promoter and 2-5g/L of softener.

3. The dyeing method of polyester-cotton fabric according to claim 2, characterized in that: the softening agent is an ester-based quaternary ammonium salt softening agent.

4. The dyeing method of polyester-cotton fabric according to claim 1, characterized in that: the water washing in S1 is carried out by treating in 35-40 deg.C water bath at a bath ratio of 1:15 for 5-10min, heating to 80-90 deg.C after water bath, and maintaining at the temperature for 50-60 min.

5. The dyeing method of polyester-cotton fabric according to claim 1, characterized in that: the alkaline dye solution in the S2 comprises the following raw materials in parts by weight: 6-8 parts of sodium hydroxide, 10-16 parts of sodium carbonate, 10-14 parts of a pH buffering agent, 6-8 parts of a leveling agent and 20-25 parts of a dyeing auxiliary agent.

6. The dyeing method of polyester-cotton fabric according to claim 5, characterized in that: the dyeing auxiliary agent is one or a combination of more of sodium hexametaphosphate, a methyl naphthalene sulfonic acid formaldehyde condensate, a benzyl naphthalene sulfonic acid formaldehyde condensate and lignosulfonate.

7. The dyeing method of polyester-cotton fabric according to claim 1, characterized in that: the finishing liquor in S3 comprises: 16-20g/L of 2, 3-epoxypropyltrimethylammonium chloride and 10-14g/L of sodium hydroxide.

8. The dyeing method of polyester-cotton fabric according to claim 1, characterized in that: the concentration of the reactive dye in the reactive dye liquor in S3 is 6-8 (owf).

9. The dyeing method of polyester-cotton fabric according to claim 8, characterized in that: the reactive dye is one or a combination of more of monochlorotriazine reactive dye, dichloros-triazine reactive dye, vinyl sulfone reactive dye, bis-monochlorotriazine reactive dye and monochlorotriazine/vinyl sulfone double-reactive group reactive dye.

10. The dyeing method of polyester-cotton fabric according to claim 1, characterized in that: in S5, the initial washing temperature is 26-30 ℃, and the initial washing time is 20-30 min; soaping temperature is 85-95 deg.C, and soaping time is 20-30 min; the post-washing temperature is 20-25 deg.C, and the post-washing time is 20-30 min.

Technical Field

The invention relates to the technical field of fabric dyeing methods, in particular to a dyeing method of a polyester-cotton fabric.

Background

Polyester-cotton fabrics are mainly dyed with disperse dyes and reactive dyes. Because the reactive dye needs high-salt dyeing promotion and alkaline color fixation, the high-salt dye liquor can reduce the stability of a dispersion system, and the disperse dye is unstable and easy to decompose under an alkaline condition, the conventional common two-bath method for dyeing the polyester-cotton fabric has the advantages of long process flow, high energy consumption and high water consumption. The existing one-bath two-step method and one-bath one-step method polyester-cotton dyeing process can shorten the process flow and reduce water consumption and energy consumption, but has higher requirements on dyes and auxiliaries, very narrow dye selection range and poor dyeing reproducibility.

The existing polyester-cotton fabric hot dyeing process has the disadvantages of complicated steps, long process and hard hand feeling of the dyed fabric.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a dyeing method of a rice polyester-cotton fabric; to solve the above technical problems.

The invention specifically adopts the following technical scheme:

the dyeing method of the polyester-cotton fabric comprises the following steps:

s1 pretreatment: immersing a polyester-cotton fabric to be dyed into a pretreatment solution for pretreatment, then washing with water, and then dehydrating;

s2 polyester part dyeing: soaking the fabric subjected to S1 in alkaline dye solution with required color, adjusting the bath ratio to 1:15-1:20, heating to 90-100 ℃ at the speed of 2 ℃/min, keeping the temperature for 10min, heating to 133-136 ℃ at the speed of 1.7 ℃/min, and keeping the temperature for 20-30 min; cooling to 120-130 deg.C at a rate of 1.7 deg.C/min, cooling to 60-70 deg.C at a rate of 2 deg.C/min, and draining;

partial dyeing of S3 cotton: immersing the polyester-cotton fabric dyed by S2 into finishing liquid, heating to 60-65 ℃ at the speed of 2 ℃/min, then preserving heat for 20-30min, taking out, washing, immersing into reactive dye liquor, adjusting the bath ratio to 1:45-1:50, heating to 85-90 ℃ at the speed of 3-4 ℃/min, preserving heat for 30-40min, adding 5-20g/L of soda according to the volume of the reactive dye liquor, and preserving heat for 15-20 min;

s4 color fixation: performing steaming color fixation treatment on the fabric subjected to S3 for 10-15 min;

and S5 post-processing: and (3) cooling the fabric subjected to S4 to 25-30 ℃, and then sequentially carrying out primary washing, soaping and post-washing.

Preferably: the pretreatment liquid in S1 includes: 6-8g/L of caustic soda, 3-5g/L of hydrogen peroxide, 2-3g/L of hydrogen peroxide stabilizer, 4-6g/L of emulsifier, 2-3g/L of penetrant, 3-4g/L of promoter and 2-5g/L of softener.

Preferably: the softening agent is an ester-based quaternary ammonium salt softening agent.

Preferably: the water washing in S1 is carried out by treating in 35-40 deg.C water bath at a bath ratio of 1:15 for 5-10min, heating to 80-90 deg.C after water bath, and maintaining at the temperature for 50-60 min.

Preferably: the alkaline dye solution in the S2 comprises the following raw materials in parts by weight: 6-8 parts of sodium hydroxide, 10-16 parts of sodium carbonate, 10-14 parts of a pH buffering agent, 6-8 parts of a leveling agent and 20-25 parts of a dyeing auxiliary agent.

Preferably: the dyeing auxiliary agent is one or a combination of more of sodium hexametaphosphate, a methyl naphthalene sulfonic acid formaldehyde condensate, a benzyl naphthalene sulfonic acid formaldehyde condensate and lignosulfonate.

Preferably: the finishing liquor in S3 comprises: 16-20g/L of 2, 3-epoxypropyltrimethylammonium chloride and 10-14g/L of sodium hydroxide.

Preferably: the concentration of the reactive dye in the reactive dye liquor in S3 is 6-8 (owf).

Preferably: the reactive dye is one or a combination of more of monochlorotriazine reactive dye, dichloros-triazine reactive dye, vinyl sulfone reactive dye, bis-monochlorotriazine reactive dye and monochlorotriazine/vinyl sulfone double-reactive group reactive dye.

Preferably: in S5, the initial washing temperature is 26-30 ℃, and the initial washing time is 20-30 min; soaping temperature is 85-95 deg.C, and soaping time is 20-30 min; the post-washing temperature is 20-25 deg.C, and the post-washing time is 20-30 min.

The invention has the beneficial effects that:

1. in the dyeing process, the temperature rises in a step-type progressive mode, and the heating and cooling rate and the dyeing time are strictly controlled, so that the fiber fabric has high dyeing firmness, uniform dyeing and good dyeing stability. The invention is processed under the condition of high temperature and high pressure, on one hand, the polyester fiber can be fibrillated, and the hand feeling and style of the fabric can be improved. According to the invention, the processes of washing, soaping and color fixing are added after dyeing, so that the dyeing fastness is good;

2. the temperature of the pretreatment, dyeing, sizing and other procedures is stable, so that the process condition has small leap, the process is stable, and the final performance of the fabric is stable; simple process, convenient operation and popularization and application.

3. The problems that the existing polyester-cotton fabric hot dyeing process is complicated in steps, relatively long in process and relatively hard in hand feeling of the dyed fabric are effectively solved.

Detailed Description

The following detailed description will be given in conjunction with the following examples of the technical solution of the invention. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the invention pertains.