阅读说明：本技术 含巯基蒽醌型分散染料染色聚丙烯纤维的方法 (Method for dyeing polypropylene fiber by using mercapto anthraquinone type disperse dye ) 是由 黄昊飞 孟华杰 李富强 刘笑言 尹磊 荆泽昊 张文淑 张琪 李春红 张彩云 郭敏 于 2021-11-15 设计创作，主要内容包括：本发明涉及分散染料技术领域,具体涉及一种含巯基蒽醌型分散染料染色聚丙烯纤维的方法。先利用含巯基蒽醌型分散染料对聚丙烯织物进行染色,再将染色后的聚丙烯织物置于氧化固色剂中进行固色,通过含巯基蒽醌型分散染料之间形成双硫键,实现对聚丙烯纤维小分子染料着色,大分子染料固色的目的。本发明含巯基蒽醌型分散染料具有较好的深色效应,牢度性能好,在染色过程中染料的用量相对较小,且上染率高,产生的染料废水少,能够有效解决传统分散染料在制造和印染过程中废水COD、BOD高的行业难题,具有良好的应用前景。(The invention relates to the technical field of disperse dyes, in particular to a method for dyeing polypropylene fibers by using mercapto anthraquinone-containing disperse dyes. The polypropylene fabric is dyed by utilizing the mercapto anthraquinone-containing disperse dye, then the dyed polypropylene fabric is placed in an oxidation color fixing agent for color fixation, and the aim of coloring the polypropylene fiber micromolecule dye and fixing the color of the macromolecule dye is realized by forming a disulfide bond between the mercapto anthraquinone-containing disperse dye. The mercapto anthraquinone-containing disperse dye has the advantages of good dark color effect, good fastness performance, relatively small dye consumption in the dyeing process, high dye uptake, less produced dye wastewater, capability of effectively solving the industrial problem of high COD and BOD of wastewater in the manufacturing and printing and dyeing processes of the traditional disperse dye, and good application prospect.)

1. A method for dyeing polypropylene fiber with mercapto anthraquinone type disperse dye is characterized in that: the polypropylene fabric is dyed by utilizing the mercapto anthraquinone-containing disperse dye, then the dyed polypropylene fabric is placed in an oxidation color fixing agent for color fixation, and the aim of coloring the polypropylene fiber micromolecule dye and fixing the color of the macromolecule dye is realized by forming a disulfide bond between the mercapto anthraquinone-containing disperse dye.

2. The method for dyeing polypropylene fiber with mercapto anthraquinone type disperse dye according to claim 1, characterized in that: the structural formula of the mercapto anthraquinone-containing disperse dye is as follows:

3. the method for dyeing polypropylene fiber with mercapto anthraquinone type disperse dye according to claim 1, characterized in that: the mass ratio of the polypropylene fabric to the mercapto anthraquinone-containing disperse dye is 1: 0.02-0.03.

4. The method for dyeing polypropylene fiber with mercapto anthraquinone type disperse dye according to claim 1, characterized in that: the dyeing is completed by heating to 60-70 deg.C at 2 deg.C/min, heating to 110 deg.C and 130 deg.C at 1 deg.C/min, maintaining for 30-50min, and cooling to room temperature.

5. The method for dyeing polypropylene fiber with mercapto anthraquinone type disperse dye according to claim 1, characterized in that: the oxidation color fixing agent is a hydrogen peroxide-ammonia water solution, wherein the volume ratio of hydrogen peroxide to ammonia water is 4-4.2: 1; the pH value of the oxidation color fixing agent is 7-9.

6. The method for dyeing polypropylene fiber with mercapto anthraquinone type disperse dye according to claim 1, characterized in that: the dosage ratio of the polypropylene fabric to the oxidation color fixing agent is 1:12-14, wherein the polypropylene fabric is calculated by g, and the oxidation color fixing agent is calculated by ml.

7. The process for dyeing polypropylene fibers with mercapto anthraquinone-based disperse dyes according to any one of claims 1 to 6, characterized by comprising the following steps:

(1) adding the mercapto anthraquinone-containing disperse dye, a dispersant NNO, zirconium beads and water into a sand mill for sand milling, filtering through a fine nylon filter cloth after the sand milling is finished, and collecting dye dispersion liquid to obtain dye color paste;

(2) adding the dye color paste into the buffer solution to obtain a dye solution, and then adding the polypropylene fabric into the dye solution for dyeing;

(3) and (3) soaking the dyed polypropylene fabric in an oxidation color fixing agent, taking out, soap boiling, washing and airing.

8. The method for dyeing polypropylene fiber with mercapto anthraquinone type disperse dye according to claim 7, characterized in that: the using amount ratio of the mercapto anthraquinone-containing disperse dye to the dispersant NNO to the zirconium beads to water is 0.5-3:0.5-3:40-60:8-50, wherein the mercapto anthraquinone-containing disperse dye, the dispersant NNO and the zirconium beads are counted by g, and the water is counted by ml.

9. The method for dyeing polypropylene fiber with mercapto anthraquinone type disperse dye according to claim 7, characterized in that: the buffer solution is a buffer solution of sodium acetate and ammonia water, and the pH value of the buffer solution is 5-10; the bath ratio of the buffer solution to the polypropylene fabric is 1: 20-60.

10. The process for dyeing the azo-structured disperse dye for polypropylene fiber according to claim 7, wherein: the soaking time is 2-3.5 hours.

Technical Field

The invention relates to the technical field of disperse dyes, in particular to a method for dyeing polypropylene fibers by using mercapto anthraquinone-containing disperse dyes.

Background

Polypropylene is a fully saturated hydrocarbon polymer, the molecular chain of which does not contain polar groups or active groups. The polypropylene fiber is a fiber which has good elasticity, high strength and high toughness under the action of heavy load, and has the performance characteristics of light weight, wear resistance, strong coverage, excellent heat insulation performance and the like, so that the polypropylene fiber is widely applied to the fields of carpets, decorative fabrics, medical treatment and the like. Since the polypropylene fiber has a high degree of crystallization, the higher the degree of crystallization, the lower the probability of diffusion of dye molecules from the outside to the inside, resulting in very strong hydrophobicity and chemical stability, and thus it is difficult to promote dyeing of the polypropylene fiber.

The existing polypropylene dyeing methods can be divided into four types: dyeing modified polypropylene, dyeing unmodified polypropylene, applying high-molecular dye to polypropylene and dyeing before spinning.

(1) And dyeing the modified polypropylene. Study of dyeing Properties of rare earth modified Polypropylene fiber (Xudezeng, Raili, Guo Jing, etc. [ J ]]The synthetic fiber industry, 2008,031(004):15-17.) uses rare earth compound lanthanum benzoate and polypropylene to blend and spin, and dyes the polypropylene with disperse dye and dyeing auxiliary, and the result shows that the dye uptake of the modified polypropylene fiber is increased along with the increase of the lanthanum benzoate content, the dyeing auxiliary content and the dyeing time. Preliminary studies on modification and dyeing of polypropylene by plasma grafting of Pensaiping et al (Pensaiping, Suyuan, Shinationa, et al. N2 plasma [ J ]]Nuclear fusion and plasma physics, 2007,27(3):269-272) with N₂And performing surface treatment on the polypropylene fiber by plasma solid phase surface modification. The research result shows that: active groups such as carbonyl, amine (amino) or amido are introduced to the surface of the polypropylene fiber after plasma surface treatment and acrylic acid grafting, so that the polypropylene fiber can be dyed with bright cationic brilliant blue from the undayable state, and the dyeing quality of the polypropylene fiber is obviously improved. Zhanghuadong et al (Zhanghuadong, Wangjiangming, Zhangzhou, etc.. PP/modified PET blend fiber dyeing property [ J]Printing and dyeing 2006,32(018):1-4.) PP/PET blended fiber dyeable with disperse dye under normal pressure is prepared by adopting a blending modification method, and experimental results show that the dye-uptake percentage is improved along with the increase of the PET content in the blended fiber, and the fiber dyed by the disperse dye can achieve good dyeing depth and dyeing fastness.

(2) Dyeing unmodified polypropylene. The research institute of dunken doff textile chemistry and chemical fiber (Frank G (a) hr, Thomas Lehr, wai et wil. dyeing of unmodified polypropylene fiber fabric [ J ]. international textile guide, 2006,034(010):35-36.) made progress in the research of reduced dye dyeing of polypropylene fiber, they overcome the defects of the old process developed by BASF in 1961, the key of the new process is to pre-treat polypropylene fiber by using plasma technology before the reduced dye dyeing, so that the plasma-activated polypropylene fiber has strong affinity to the reduced dye. Li Shuli et al (Li Shuli, Cuiguxin, Li Jun. atmospheric dyeable and antistatic polypropylene fiber disperse dye dyeing mechanism research [ J ]. printing and dyeing auxiliary agent 2014(03):31-36.) use atmospheric dyeable and antistatic polypropylene fiber as a research object, dye the polypropylene fiber by using Dystar Dianix AC-E three primary colors, and research dyeing dynamics and thermodynamics.

(3) The application of high molecular dye in polypropylene fiber. The polypropylene graft type polymer dye is designed and synthesized by Lidin (synthesis and application [ D ].2004 ]), and a color master batch method is adopted for coloring for the first time, and the result shows that the polypropylene graft type polymer dye has good compatibility with polyolefin resin, and a new method and thought are provided for coloring polypropylene fibers. The protein macromolecular dye is prepared by reacting modified and unmodified water-soluble gelatin, casein, wool protein and reactive dye in the Yangjinzong and Zhang Shufeng (Yangjinzong, Zhang Shufeng. protein macromolecular dye [ J ]. fine chemical fiber information communication, 2002(6): 32-32.). The dye is used for dyeing leather, wool fiber and the like, and the performances of color brilliance, tinting strength, color fastness, migration resistance and the like of a dyed product are improved.

(4) Coloring before spinning. The color fixing research of polypropylene color master batches is carried out by Cao man, et al (Cao ren, Yoghurt, et al, J. dye and dyeing, 2005,042(006):19-21.) the research result shows that under the experimental conditions that the optimal mass ratio of pyromellitic dianhydride to color master batches is 10%, the optimal mass ratio of pyromellitic dianhydride to EVA is 1:1, the optimal temperature is 175-180 ℃, and the optimal time is 9-10 hours, the color fixing experiment is carried out by using EVA and pyromellitic acid as a color fixing agent, the color master batch migration after color fixing is reduced, and the color master batches can be applied to polypropylene coloring through practical inspection.

So far, the methods make a powerful contribution to the dyeing and finishing process of the polypropylene fiber, but the method still has defects in the practical application process. In the research of polypropylene fiber dyeing, the problems of low dye uptake, poor color fastness and the like exist, so that the development of a dyeing method which can show good dyeing effects such as high dye uptake, high color fastness and the like on polypropylene fibers is a problem which is urgently needed to be solved by the dyeing industry.

Disclosure of Invention

The invention aims to provide a method for dyeing polypropylene fibers by using mercapto anthraquinone-containing disperse dyes, which realizes the coloring of polypropylene fiber micromolecule dyes and the fixation of macromolecular dyes by forming disulfide bonds among the mercapto anthraquinone-containing disperse dyes, and has high dye uptake and good color fastness.

The invention relates to a method for dyeing polypropylene fiber by using mercapto anthraquinone disperse dye, which comprises the following steps: the polypropylene fabric is dyed by utilizing the mercapto anthraquinone-containing disperse dye, then the dyed polypropylene fabric is placed in an oxidation color fixing agent for color fixation, and the aim of coloring the polypropylene fiber micromolecule dye and fixing the color of the macromolecule dye is realized by forming a disulfide bond between the mercapto anthraquinone-containing disperse dye.

Wherein:

the structural formula of the mercapto anthraquinone-containing disperse dye is as follows:

the mass ratio of the polypropylene fabric to the mercapto anthraquinone-containing disperse dye is 1: 0.02-0.03.

The dyeing is completed by heating to 60-70 deg.C at 2 deg.C/min, heating to 110 deg.C and 130 deg.C at 1 deg.C/min, maintaining for 30-50min, and cooling to room temperature.

The oxidation color fixing agent is a hydrogen peroxide-ammonia water solution, wherein the volume ratio of hydrogen peroxide to ammonia water is 4-4.2: 1; the pH value of the oxidation color fixing agent is 7-9.

The dosage ratio of the polypropylene fabric to the oxidation color fixing agent is 1:12-14, wherein the polypropylene fabric is calculated by g, and the oxidation color fixing agent is calculated by ml.

The method for dyeing the polypropylene fiber by the mercapto anthraquinone-containing disperse dye comprises the following steps:

(1) adding the mercapto anthraquinone-containing disperse dye, a dispersant NNO, zirconium beads and water into a sand mill for sand milling, filtering through a fine nylon filter cloth after the sand milling is finished, and collecting dye dispersion liquid to obtain dye color paste;

(2) adding the dye color paste into the buffer solution to obtain a dye solution, and then adding the polypropylene fabric into the dye solution for dyeing;

(3) and (3) soaking the dyed polypropylene fabric in an oxidation color fixing agent, taking out, soap boiling, washing and airing.

Wherein:

the using amount ratio of the mercapto anthraquinone-containing disperse dye to the dispersant NNO to the zirconium beads to water is 0.5-3:0.5-3:40-60:8-50, wherein the mercapto anthraquinone-containing disperse dye, the dispersant NNO and the zirconium beads are counted in g, and the water is counted in ml.

The buffer solution is a buffer solution of sodium acetate and ammonia water, and the pH value of the buffer solution is 4-8; the bath ratio of the buffer solution to the polypropylene fabric is 1: 20-60.

The soaking time is 2-3.5 hours.

The preferred dyeing method comprises the following specific steps:

adding 0.5-3g of mercapto anthraquinone-containing disperse dye, 0.5-3g of dispersant NNO, 40-60g of zirconium beads (the diameter is 0.6-0.8mm) and 8-50mL of water into a sand mill, sanding for 4-12 hours, filtering through fine nylon filter cloth after sanding is finished, collecting dye dispersion liquid, and fixing the volume in a 100mL volumetric flask to obtain dye color paste; transferring the dye color paste according to the chromaticity requirement of 0.5-2%, adding a buffer solution (pH value is 5-10) of sodium acetate and ammonia water according to a bath ratio of 1:20-60, transferring to a dyeing cup, adding the polypropylene fabric to be dyed, putting into a high-temperature high-pressure dyeing instrument, heating to 60-70 ℃ at a heating rate of 2 ℃/min, heating to 110 and 130 ℃ at 1 ℃/min, preserving heat for 30-50min, cooling to room temperature, and taking out the dyed cloth sample. And (3) putting the dyed polypropylene fabric into a hydrogen peroxide-ammonia water solution, wherein the ammonia water is used for adjusting the pH value of the solution to 7-9 and simultaneously serving as an oxidation reaction promoter, the oxidation reaction is carried out for 2-3.5 hours, and then the polypropylene fabric after the reaction is taken out, soap-boiled, washed and dried. Finally, the dye liquor before and after dyeing is respectively absorbed and an ultraviolet-visible spectrophotometer is used for measuring the maximum absorption wavelength (lambda)_max) And (4) measuring the absorbance, and calculating the dye uptake of the dye by using the Lambert-beer law.

The method for dyeing the polypropylene fiber by the mercapto anthraquinone-containing disperse dye is also suitable for dyeing other hydrophobic synthetic fibers, such as terylene, chinlon, polylactic acid fiber and the like.

The invention has the following beneficial effects:

the polypropylene fiber fabric is dyed by utilizing the mercapto anthraquinone-containing disperse dye, and the mercapto anthraquinone-containing disperse dye has smaller molecular weight, stronger permeability and easier dyeing, so that the polypropylene fiber fabric is dyed by the micromolecular mercapto anthraquinone-containing disperse dye; the dyed polypropylene fiber fabric is placed in a hydrogen peroxide-ammonia water solution for oxidation and color fixation, hydrogen peroxide is used as an oxidant, ammonia water is used as an accelerator for treating the dyed polypropylene fiber fabric, sulfydryl among the sulfydryl-containing anthraquinone disperse dyes is subjected to oxidation reaction in the presence of the oxidant to be crosslinked, macromolecular dyes containing disulfide bonds are formed and fixed on the polypropylene fiber fabric, and the color fixation of the macromolecular sulfydryl-containing anthraquinone disperse dyes on the polypropylene fiber fabric is realized. The invention realizes the purposes of coloring the small-molecular anthraquinone structure disperse dye of the polypropylene fiber and fixing the color of the large-molecular anthraquinone structure disperse dye, and improves the dye uptake of the polypropylene fiber fabric.

The mercapto anthraquinone-containing disperse dye has the advantages of good dark color effect, good fastness performance, relatively small dye consumption in the dyeing process, high dye uptake, less produced dye wastewater, capability of effectively solving the industrial problem of high COD and BOD of wastewater in the manufacturing and printing and dyeing processes of the traditional disperse dye, and good application prospect.

Drawings

FIG. 1 is a nuclear magnetic resonance hydrogen spectrum of the mercapto anthraquinone-containing disperse dye of example 1.

Detailed Description

The present invention is further described below with reference to examples.

Example 1

1g of mercapto anthraquinone-containing disperse dye, 1g of dispersant NNO, 60g of zirconium beads (the diameter is 0.8mm) and 10mL of water are added into a sand mill for sand grinding for 8 hours, and after the sand grinding is finished, the materials are filtered by a fine nylon filter cloth,Collecting the dye dispersion liquid and fixing the volume in a 100mL volumetric flask to obtain dye color paste; transferring dye color paste according to the chromaticity requirement of 2%, adding a buffer solution (pH value is 5) of sodium acetate and ammonia water according to a bath ratio of 1:30, transferring the mixture into a dyeing cup, adding 1g of polypropylene fabric to be dyed, putting the polypropylene fabric into a high-temperature high-pressure dyeing instrument, heating to 60 ℃ at a heating rate of 2 ℃/min, heating to 120 ℃ at a temperature of 1 ℃/min, keeping the temperature for 30min, cooling to room temperature, and taking out a dyed cloth sample. And (3) putting the dyed polypropylene fabric into 13mL of hydrogen peroxide-ammonia water solution (the volume ratio of hydrogen peroxide to ammonia water is 4: 1; and the pH value of the oxidation color fixing agent is 8), carrying out oxidation reaction for 2h, taking out the polypropylene fabric after the reaction is finished, and carrying out soap boiling, washing and air drying. Finally, respectively sucking 1mL of dye liquor of the dye liquor before and after dyeing into a 10mL volumetric flask, adding acetone to the scale, and using an ultraviolet-visible spectrophotometer to measure the maximum absorption wavelength (lambda)_max) The absorbance was measured, and the dye uptake was calculated using the Lambert-beer law, and the data are shown in Table 1.

The structural formula of the mercapto anthraquinone-containing disperse dye is as follows:

the nuclear magnetic resonance hydrogen spectrum is shown in figure 1,¹H NMR(400MHz,DMSO)δ7.85(d,J＝7.85Hz,2H),7.24(s,2H),6.84(d,J＝6.84HZ,2H),6.85(s,4H)。

example 2

1g of mercapto anthraquinone-containing disperse dye, 2g of dispersant NNO, 50g of zirconium beads (the diameter is 0.7mm) and 10mL of water are added into a sand mill for sand milling for 6 hours, after the sand milling is finished, the mixture is filtered by fine nylon filter cloth, dye dispersion liquid is collected, and the constant volume is determined in a 100mL volumetric flask, so that dye color paste is obtained; transferring dye color paste according to the requirement of 1% chromaticity, adding a buffer solution (pH value is 5) of sodium acetate and ammonia water according to a bath ratio of 1:20, transferring the mixture into a dyeing cup, adding 0.5g of polypropylene fabric to be dyed, putting the polypropylene fabric into a high-temperature high-pressure dyeing instrument, heating to 65 ℃ at a heating rate of 2 ℃/min, heating to 110 ℃ at a temperature of 1 ℃/min, keeping the temperature for 30min, cooling to room temperature, and taking out a dyed cloth sample. Putting the dyed polypropylene fabric into 7mL hydrogen peroxide-ammonia water solution (hydrogen peroxide and ammonia)The volume ratio of water is 4: 1; the pH value of the oxidation color fixing agent is 8), carrying out oxidation reaction for 2h, taking out the polypropylene fabric after the reaction is finished, soap boiling, washing and airing. Finally, respectively sucking 1mL of dye liquor of the dye liquor before and after dyeing into a 10mL volumetric flask, adding acetone to the scale, and using an ultraviolet-visible spectrophotometer to measure the maximum absorption wavelength (lambda)_max) The absorbance was measured, and the dye uptake was calculated using the Lambert-beer law, and the data are shown in Table 1.

The structure of the mercapto anthraquinone-containing disperse dye is the same as that of example 1.

Example 3

1g of mercapto anthraquinone-containing disperse dye, 2g of dispersant NNO, 50g of zirconium beads (the diameter is 0.7mm) and 30mL of water are added into a sand mill for sand milling for 6 hours, after the sand milling is finished, the mixture is filtered by fine nylon filter cloth, dye dispersion liquid is collected, and the constant volume is determined in a 100mL volumetric flask, so that dye color paste is obtained; transferring dye color paste according to the 2% chromaticity requirement, adding a buffer solution (pH value is 6) of sodium acetate and ammonia water according to a bath ratio of 1:40, transferring the dye color paste into a dyeing cup, adding 1g of polypropylene fabric to be dyed, putting the dyeing cup into a high-temperature high-pressure dyeing instrument, heating to 70 ℃ at a heating rate of 2 ℃/min, heating to 130 ℃ at a temperature of 1 ℃/min, keeping the temperature for 30min, cooling to room temperature, and taking out a dyed cloth sample. And (3) putting the dyed polypropylene fabric into 13mL of hydrogen peroxide-ammonia water solution (the volume ratio of hydrogen peroxide to ammonia water is 4.2: 1; and the pH value of the oxidation color fixing agent is 9), carrying out oxidation reaction for 3h, taking out the polypropylene fabric after the reaction is finished, and carrying out soap boiling, washing and air drying. Finally, respectively sucking 1mL of dye liquor of the dye liquor before and after dyeing into a 10mL volumetric flask, adding acetone to the scale, and using an ultraviolet-visible spectrophotometer to measure the maximum absorption wavelength (lambda)_max) The absorbance was measured, and the dye uptake was calculated using the Lambert-beer law, and the data are shown in Table 1.

The structure of the mercapto anthraquinone-containing disperse dye is the same as that of example 1.

Comparative example 1

The polypropylene fabric was dyed by replacing the mercapto anthraquinone-based disperse dye of example 1 with the hydroxy anthraquinone-based disperse dye under the same conditions, and the dyeing process and the dye uptake test process were the same as in example 1. The structure of the hydroxyl-containing anthraquinone disperse dye is as follows:

comparative example 2

The polypropylene fabric is dyed by anthraquinone structure carboxylic acid type dye in patent CN111019386A in example 1, and the dyeing process and dye uptake test process are as in example 1.

Comparative example 3

The color fixing is carried out without adopting hydrogen peroxide-ammonia water solution, and the method comprises the following specific steps:

adding 1g of the mercapto anthraquinone-containing disperse dye in the embodiment 1, 1g of a dispersant NNO, 60g of zirconium beads (the diameter is 0.8mm) and 10mL of water into a sand mill, sanding for 8 hours, filtering through fine nylon filter cloth after sanding, collecting dye dispersion liquid, and fixing the volume in a 100mL volumetric flask to obtain dye color paste; transferring dye color paste according to the chromaticity requirement of 2%, adding a buffer solution (pH value is 5) of sodium acetate and ammonia water according to a bath ratio of 1:30, transferring the mixture into a dyeing cup, adding 1g of polypropylene fabric to be dyed, putting the polypropylene fabric into a high-temperature high-pressure dyeing instrument, heating to 60 ℃ at a heating rate of 2 ℃/min, heating to 120 ℃ at a temperature of 1 ℃/min, preserving the temperature for 30min, cooling to room temperature, taking out a dyed cloth sample, soaping, washing and drying. Finally, respectively sucking 1mL of dye liquor of the dye liquor before and after dyeing into a 10mL volumetric flask, adding acetone to the scale, and using an ultraviolet-visible spectrophotometer to measure the maximum absorption wavelength (lambda)_max) The absorbance was measured, and the dye uptake was calculated using the Lambert-beer law, and the data are shown in Table 1.

The dyed polypropylene fabrics of examples 1 to 3 and comparative examples 1 to 3 were reductively washed by the method of national Standard "measuring method of color and intensity of disperse dye dyeing" (GB/T2394-1980), and then their dry crocking fastness, water fastness, wet crocking fastness and sublimation fastness were measured, and the results are shown in Table 1.

TABLE 1 measurement data Table

As can be seen from Table 1, the present invention in the examples uses mercapto anthraquinone-containing disperse dyes to dye and fix polypropylene fabrics, and the dry rubbing fastness is at least 4-5 levels, and the water fastness, wet rubbing fastness and sublimation fastness are all at least 4 levels. The dyes in comparative examples 1-2 do not contain mercapto groups and have a dye uptake far lower than that of example 1; comparative example 3 although the dye of example 1 was used, the dye uptake was lower than that of example 1 without oxidative fixing treatment. Therefore, the invention adopts the mercapto anthraquinone disperse dye to dye the polypropylene fabric, and adopts the hydrogen peroxide-ammonia water solution to carry out oxidation color fixation, so that the mercapto groups among the disperse dyes are crosslinked into disulfide bonds to carry out color fixation on the fibers, and the dye uptake is improved to a greater extent.