A kind of high color fastness thermal sublimation fabric and preparation method thereof

Abstract

The invention relates to the technical field of fabrics, and discloses a high color fastness thermal sublimation fabric and a preparation method thereof. The fabric is subjected to thermal sublimation treatment to transfer dyes onto antibacterial fabrics; the antibacterial fabrics are prepared from antibacterial polyester fibers through a weaving process; the antibacterial polyester fibers include the following raw materials: polyester chips, antibacterial modified components, antioxidant 1010, polyethylene wax, and zinc stearate; the dyes include the following raw materials: disperse dyes, dye accelerators, water, and glycerol; wherein the antibacterial modified components are porous hydroxyapatite loaded with zinc pyrithione; the dye accelerator is a polyvinyl alcohol butyral derivative containing a benzene ring and a carboxyl group in its structure. The thermal sublimation fabric prepared by the invention has good antibacterial performance and color fastness, effectively prolongs the service life of the fabric, and broadens the application range of the fabric.

Description

Technical Field

[0001] The invention relates to the technical field of fabrics, and in particular to a thermal sublimation fabric with high color fastness and a preparation method thereof. Background Art

[0002] With the improvement of living standards, people's demand for fabrics is gradually increasing, and at the same time, people's attention to the pursuit of personalization is also increasing. Through thermal sublimation technology, fabrics can be customized to meet consumers' pursuit of uniqueness and personalized design. Thermal sublimation fabrics are a kind of fabrics treated by thermal sublimation technology. The basic principle is to heat the pigment molecules from solid to gas and penetrate into the fabric fibers. It has the characteristics of bright colors, fine patterns, and not easy to fade. It has been widely used in clothing, household goods, medical treatment, advertising and other fields.

[0003] In recent years, with the continuous promotion and expansion of the application scope of fabric products, the requirements for fabric performance have become higher and higher. Adding diversified functionality to fabrics has become a topic of in-depth research by many experts and scholars. Color fastness is the key to affecting the color change of fabrics. Ordinary thermal sublimation fabrics have problems such as low color depth and poor color fastness to friction. Especially on polyester fabrics, after high temperature and high pressure dyeing, not only will the color fastness be significantly reduced, but the color of the fabric will also change to a certain extent, which will not only affect the appearance, but also may affect the comfort of wearing. In addition, polyester fabrics cannot effectively absorb sweat, sebum and other excretions secreted by the human body during contact with the human body, and are prone to breed bacteria, fungi and other microorganisms. These microorganisms will multiply and spread rapidly under suitable conditions, not only causing the fabric to have odor, stains and plaques, but also posing a threat to human health.

[0004] The invention patent with the announcement number CN116240725B discloses a preparation process for polyester fabrics. The invention can adsorb the antibacterial molecules in the quaternary ammonium salt into the porous structure on the surface of silicon dioxide and titanium dioxide by mixing antibacterial powder with different types of quaternary ammonium antibacterial agents, thereby having an excellent inhibitory effect on Escherichia coli, Staphylococcus aureus and Aspergillus, and then mix the antibacterial components with PET slices by melt blending, and then make antibacterial polyester by spinning and blending, so that the prepared fabric has stable antibacterial properties. Therefore, the functionality of the fabric can be enriched by adding optimized components in a targeted manner, promoting its further development and application. Summary of the invention

[0005] In order to solve the problems mentioned in the background technology, the object of the present invention is to provide a high color fastness thermal sublimation fabric and a preparation method thereof.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A method for preparing a heat-sublimation fabric with high color fastness comprises the following steps:

[0008] The antibacterial fabric is placed in a printer, and the dye is printed according to the required pattern by the printer. After the printing is completed, the fabric is treated with a pressing machine at a transfer temperature of 190 to 210°C for 30 to 70 seconds, and then washed, dried, and shaped to obtain a thermal sublimation fabric;

[0009] The antibacterial fabric is made of antibacterial polyester fiber through a weaving process;

[0010] The antibacterial polyester fiber comprises the following raw materials in parts by weight: 40 to 60 parts of polyester chips, 5 to 7 parts of antibacterial modified components, 2 to 4 parts of antioxidant 1010, 1 to 3 parts of polyethylene wax, and 1 to 2 parts of zinc stearate;

[0011] The dye comprises the following raw materials in parts by weight: 20 to 40 parts of disperse dye, 5 to 10 parts of dye accelerator, 25 to 45 parts of water and 10 to 20 parts of glycerol.

[0012] Furthermore, the preparation method of the antibacterial fabric comprises the following steps:

[0013] (1) placing polyester chips, antibacterial modified components, antioxidant 1010, polyethylene wax and zinc stearate in a high-speed mixer, mixing them evenly, adding them into a twin-screw extruder for extrusion granulation, setting the speed of the extruder to 100-200 r / min and the temperature to 200-240° C., and obtaining a masterbatch;

[0014] (2) placing the masterbatch in a melt spinning machine for melt spinning to obtain primary fibers, and then cooling, oiling, winding and other processes to obtain antibacterial polyester fibers;

[0015] (3) The antibacterial polyester fiber is spun into yarn, and the yarn is woven to produce an antibacterial fabric.

[0016] Furthermore, in step (2), in the melt spinning, the spinning temperature is set to 250-290° C., the spinning speed is set to 800-1000 m / min, and the spinning pressure is set to 30-50 MPa.

[0017] Furthermore, the preparation method of the antibacterial modified component comprises the following steps:

[0018] S1: Add porous hydroxyapatite to N,N-dimethylformamide, ultrasonically disperse for 20 to 30 minutes, pass nitrogen, exhaust the air, and then continue to add guanidine acetate and catalyst to the system. After the addition is completed, increase the system temperature to 90 to 110°C, keep warm and stir for 3 to 7 hours, wait for the material to cool naturally, centrifuge to separate the solid material, wash the solid material, and vacuum dry to obtain modified porous hydroxyapatite;

[0019] S2: Under nitrogen protection, the modified porous hydroxyapatite is ultrasonically dispersed in deionized water to form a uniform dispersion, sodium pyrithione is added to the dispersion, and after the addition, it is stirred at room temperature for 1 to 3 hours, and zinc chloride is continuously added. Under stirring conditions, the system temperature is raised to 60 to 70°C and kept warm for 2 to 4 hours. The solid material is filtered and separated, and the antibacterial modified component is obtained after washing and drying.

[0020] Furthermore, in step S1, the catalyst is any one of p-toluenesulfonic acid, aminosulfonic acid or trifluoromethanesulfonic acid.

[0021] Furthermore, the preparation method of the dye comprises the following steps:

[0022] Add disperse dye, dye accelerator, water and glycerin into a mixer and stir them mechanically to obtain the dye.

[0023] Furthermore, the disperse dye is any one of disperse red, disperse orange, disperse yellow or disperse blue.

[0024] It can be inferred that the principle of the above scheme is: in step S1, under the action of a catalyst, the hydroxyl groups on the surface of the porous hydroxyapatite can react with the carboxyl groups in the guanidine acetate structure, thereby introducing the guanidine group into the porous hydroxyapatite to obtain modified porous hydroxyapatite; in step S2, the modified porous hydroxyapatite is positively charged in an aqueous solution, and sodium pyrithione will ionize negatively charged pyrithione anions in an aqueous solution. Under the action of electrostatics, the negatively charged pyrithione anions will be adsorbed in the modified porous hydroxyapatite, and zinc chloride will ionize zinc ions in an aqueous solution. Since pyrithione anions have a strong complexing ability with zinc ions, under the action of thermal motion, pyrithione anions and zinc ions generate pyrithione zinc in situ to obtain an antibacterial modified component.

[0025] Furthermore, the preparation method of the dye accelerator comprises the following steps:

[0026] SS1: polyvinyl butyral and N,N-dimethylformamide are stirred and mixed to form a uniform liquid material, nitrogen is used as a protective gas, air is discharged, allyl succinic anhydride and p-toluenesulfonic acid are added to the liquid material, and the mixture is stirred at a constant temperature of 60 to 70° C. for 4 to 8 hours, and the solvent is removed by reduced pressure distillation to obtain modified polyvinyl butyral;

[0027] SS2: Add modified polyvinyl butyral and dimethyl sulfoxide in sequence into a reactor filled with nitrogen, stir evenly, add p-tert-butylbenzyl mercaptan and a photoinitiator into the reactor, place the reactor under an ultraviolet lamp for 3 to 5 hours while stirring, and discharge the material to obtain a dye accelerator.

[0028] Furthermore, in step SS2, the photoinitiator is any one of benzoin isopropyl ether, benzoin dimethyl ether or benzoin ethyl ether.

[0029] It can be inferred that the principle of the above scheme is: in step SS1, since the anhydride group in the allyl succinic anhydride structure has high activity, under the action of a catalyst, it can undergo a ring-opening reaction with the hydroxyl group in the polyvinyl butyral structure, thereby introducing an unsaturated olefinic functional group into the structure of polyvinyl butyral to obtain modified polyvinyl butyral; in step SS2, under the irradiation of a photoinitiator and an ultraviolet lamp, the unsaturated olefinic functional group in the modified polyvinyl butyral structure can undergo a click reaction with the thiol group in the p-tert-butylbenzyl mercaptan structure to obtain a dye accelerator.

[0030] A thermal sublimation fabric with high color fastness is made by adopting the preparation method.

[0031] Beneficial effects of the present invention:

[0032] (1) The present invention prepares porous hydroxyapatite loaded with zinc pyrithione as an antibacterial modification component. After the porous hydroxyapatite is organically modified, its dispersibility in polyester chips is improved, so that it is not easy to agglomerate during use. Since the porous hydroxyapatite has porosity and a high specific area, zinc pyrithione can be loaded in the pores of the hydroxyapatite, thereby releasing zinc pyrithione. The strong and broad-spectrum antibacterial effect of zinc pyrithione is utilized to give the fabric excellent antibacterial properties, avoid the growth of microorganisms such as bacteria and fungi on the fabric, and cause the fabric to produce odor, stains and bacterial plaques, posing a threat to human health. In addition, the purpose of sustained release can be achieved, and the long-term antibacterial ability can be maintained, thereby broadening the application range of the fabric and improving its safety.

[0033] (2) The present invention prepares a dye accelerator as a dispersant for disperse dyes, and uses polyvinyl butyral with a solubility parameter similar to that of disperse dyes as the main chain of the dye accelerator, which is beneficial to improving its affinity with disperse dyes and improving the stability of the dyes. At the same time, the conjugation effect of the benzene ring in the dye accelerator structure can be used to produce an affinity anchoring effect on the dye group and stably anchor it on the surface of the disperse dye. In addition, the carboxyl group in the dye accelerator structure is negatively charged. Due to the effect of electrostatic repulsion, the disperse dye particles will repel each other, so that the disperse dye can maintain a better dispersion state and is not easy to form agglomerates, which helps to maintain the stability and uniformity of the disperse dye, effectively improves the color depth of the fabric, and has better rubbing color fastness, thereby obtaining a better dyeing effect and extending the service life of the fabric.

[0034] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0036] Figure 1 This is the infrared analysis test chart of dye accelerator. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Example 1

[0039] Preparation of thermal sublimation fabrics

[0040] Step 1: Prepare antibacterial fabric

[0041] (1) 40 g of polyester chips, 5 g of antibacterial modified components, 2 g of antioxidant 1010, 1 g of polyethylene wax and 1 g of zinc stearate were placed in a high-speed mixer, mixed evenly, and then added to a twin-screw extruder for extrusion granulation. The speed of the extruder was set to 100 r / min and the temperature was set to 200° C. to obtain a masterbatch;

[0042] (2) placing the masterbatch in a melt spinning machine for melt spinning, setting the spinning temperature to 250° C., the spinning speed to 800 m / min, and the spinning pressure to 30 MPa to obtain primary fibers, and then cooling, oiling, winding, and other processes to obtain antibacterial polyester fibers;

[0043] (3) The antibacterial polyester fiber is spun into yarn, and the yarn is woven to produce an antibacterial fabric.

[0044] Step 2: Prepare the dye

[0045] 20 g of Disperse Red 60, 5 g of dye accelerator, 25 g of water and 10 g of glycerol were added into a mixer and mechanically stirred to obtain a dye.

[0046] Step 3: Prepare the sublimation fabric

[0047] The antibacterial fabric obtained in the first step is placed in a printer, and the dye obtained in the second step is printed according to the required pattern using the printer. After printing, the fabric is treated with a pressing machine at a transfer temperature of 190°C for 30s, and then washed, dried, and shaped to obtain a thermal sublimation fabric.

[0048] Example 2

[0049] Preparation of thermal sublimation fabrics

[0050] Step 1: Prepare antibacterial fabric

[0051] (1) 50 g of polyester chips, 6.5 g of antibacterial modified components, 3 g of antioxidant 1010, 2 g of polyethylene wax and 1.5 g of zinc stearate were placed in a high-speed mixer, mixed, and added into a twin-screw extruder for extrusion granulation. The speed of the extruder was set to 150 r / min and the temperature was set to 220° C. to obtain a masterbatch;

[0052] (2) placing the masterbatch in a melt spinning machine for melt spinning, setting the spinning temperature to 270° C., the spinning speed to 900 m / min, and the spinning pressure to 40 MPa to obtain primary fibers, and then cooling, oiling, winding, and other processes to obtain antibacterial polyester fibers;

[0053] (3) The antibacterial polyester fiber is spun into yarn, and the yarn is woven to produce an antibacterial fabric.

[0054] Step 2: Prepare the dye

[0055] 30 g of Disperse Red 60, 8 g of dye accelerator, 35 g of water and 15 g of glycerol were added into a mixer and mechanically stirred to obtain a dye.

[0056] Step 3: Prepare the sublimation fabric

[0057] The antibacterial fabric obtained in the first step is placed in a printer, and the dye obtained in the second step is printed according to the required pattern using the printer. After printing, the fabric is treated with a pressing machine for 50 seconds at a transfer temperature of 200°C, and then washed, dried, and shaped to obtain a thermal sublimation fabric.

[0058] Example 3

[0059] Preparation of thermal sublimation fabrics

[0060] Step 1: Prepare antibacterial fabric

[0061] (1) 60 g of polyester chips, 7 g of antibacterial modified components, 4 g of antioxidant 1010, 3 g of polyethylene wax and 2 g of zinc stearate were placed in a high-speed mixer, mixed, and added into a twin-screw extruder for extrusion granulation. The speed of the extruder was set at 200 r / min and the temperature was set at 240° C. to obtain a masterbatch;

[0062] (2) placing the masterbatch in a melt spinning machine for melt spinning, setting the spinning temperature to 290° C., the spinning speed to 1000 m / min, and the spinning pressure to 50 MPa to obtain primary fibers, and then cooling, oiling, winding, and other processes to obtain antibacterial polyester fibers;

[0063] (3) The antibacterial polyester fiber is spun into yarn, and the yarn is woven to produce an antibacterial fabric.

[0064] Step 2: Prepare the dye

[0065] 40 g of Disperse Red 60, 10 g of dye accelerator, 45 g of water and 20 g of glycerol were added into a mixer and mechanically stirred to obtain a dye.

[0066] Step 3: Prepare the sublimation fabric

[0067] The antibacterial fabric obtained in the first step is placed in a printer, and the dye obtained in the second step is printed according to the required pattern using the printer. After printing, the fabric is treated with a pressing machine for 70 seconds at a transfer temperature of 210°C, and then washed, dried, and shaped to obtain a thermal sublimation fabric.

[0068] Comparative Example 1

[0069] A thermal sublimation fabric is different from Example 2 in that no antibacterial modified component is added, and the other aspects are the same as Example 2.

[0070] Comparative Example 2

[0071] A thermal sublimation fabric, which is different from Example 2 in that the dye accelerator is replaced by sodium hexametaphosphate, and the rest is the same as Example 2.

[0072] Comparative Example 3

[0073] A thermal sublimation fabric, which is different from Example 2 in that the antibacterial modified component is replaced with zinc pyrithione, and the rest is the same as Example 2.

[0074] Comparative Example 4

[0075] A thermal sublimation fabric, which is different from Example 2 in that: no antibacterial modified component is added, the dye accelerator is replaced by sodium hexametaphosphate, and the rest is the same as Example 2.

[0076] The antibacterial modified components in the above examples and comparative examples were prepared by the following preparation method:

[0077] S1: Add 5 g of porous hydroxyapatite to N,N-dimethylformamide, ultrasonically disperse for 25 min, pass nitrogen, and after exhausting the air, continue to add 1.2 g of guanidine acetate and 0.08 g of p-toluenesulfonic acid to the system. After the addition is completed, increase the system temperature to 100°C, keep stirring for 5 h, wait for the material to cool naturally, centrifuge to separate the solid material, wash the solid material, and vacuum dry to obtain modified porous hydroxyapatite;

[0078] Elemental analysis: The element content of porous hydroxyapatite and modified porous hydroxyapatite was analyzed using a CHN628 elemental analyzer. The element tested was mainly N. After testing, no nitrogen was detected in the porous hydroxyapatite, while the nitrogen content in the modified porous hydroxyapatite was 3.9%. It is speculated that the carboxyl groups in the guanidine acetate structure reacted with the hydroxyl groups on the surface of the porous hydroxyapatite, thereby providing a nitrogen source.

[0079] S2: Under nitrogen protection, 5 g of modified porous hydroxyapatite was ultrasonically dispersed in deionized water to form a uniform dispersion, 2.4 g of sodium pyrithione was added to the dispersion, and after the addition, it was stirred at room temperature for 2 h. 2 g of zinc chloride was added, and the system temperature was raised to 65 ° C under stirring conditions and kept warm for 3 h. The solid material was separated by filtration, and the antibacterial modified component was obtained after washing and drying.

[0080] The dye accelerators in the above examples and comparative examples were prepared by the following preparation method:

[0081] SS1: 6 g of polyvinyl butyral and N,N-dimethylformamide were stirred and mixed to form a uniform liquid material, nitrogen was used as a protective gas to exhaust the air, 1.4 g of allyl succinic anhydride and 0.08 g of p-toluenesulfonic acid were added to the liquid material, and the mixture was stirred at a constant temperature of 65° C. for 6 h, and the solvent was removed by reduced pressure distillation to obtain modified polyvinyl butyral;

[0082] SS2: 6 g of modified polyvinyl butyral and dimethyl sulfoxide were added to a reactor filled with nitrogen in sequence. After stirring evenly, 1.6 g of p-tert-butylbenzyl mercaptan and 0.1 g of benzoin dimethyl ether were added to the reactor. While stirring, the reactor was placed under an ultraviolet lamp with a wavelength of 365 nm for 4 hours, and the material was discharged to obtain a dye accelerator.

[0083] Thermo Scientific Nicolet IS50 spectrometer was used to analyze the dye accelerator by infrared spectroscopy. The test results are shown in Figure 1 ,Depend on Figure 1 It can be seen that in the infrared spectrum of the dye accelerator, 3020cm -1 The absorption peak of the carbon-hydrogen bond in the benzene ring appears at 1761 cm -1The absorption peak of the ester group C=O appears at 1740 cm -1 The absorption peak of the carboxyl group C=O appears at 1018 cm -1 The absorption peak of ether bond COC appears at 1190 cm -1 The characteristic absorption peak of CSC appears at

[0084] Performance testing:

[0085] The thermal sublimation fabrics prepared in Examples 1 to 3 of the present invention and Comparative Examples 1 to 4 were made into samples that met the specifications. The antibacterial properties of the samples were tested according to GB / T 20944.3-2008 "Evaluation of Antibacterial Properties of Textiles Part 3: Oscillation Method", and the test strain was Staphylococcus aureus. After the test, according to GB / T 8629-2017 "Household Washing and Drying Procedures for Textile Testing", a C-type standard washing machine was used to select a washing procedure numbered 4N to wash the samples 50 times, and then the antibacterial properties of the samples were tested again; the color fastness to rubbing of the samples was tested according to GB / T3920-2008 "Textiles - Tests for Color Fastness - Color Fastness to Rubbing"; the color fastness of the samples was tested according to GB / T 3921-2008 "Textiles - Tests for Color Fastness - Color Fastness to Soaping", and the specific test results are shown in Table 1:

[0086]

[0087] It can be seen from Table 1 that the antibacterial modified components and dye accelerators are added to the samples prepared in Examples 1 to 3, and the fabrics have good antibacterial properties and color fastness; the antibacterial modified components are not added to the samples prepared in Comparative Example 1, and the antibacterial properties of the fabrics are poor compared with the examples; sodium hexametaphosphate is used to replace the dye accelerator in the samples prepared in Comparative Example 2, and the color fastness of the fabrics is poor; zinc pyrithione is used to replace the antibacterial modified components in the samples prepared in Comparative Example 3, probably because it does not have a sustained-release effect, and the antibacterial properties of the fabrics decrease after washing the samples 50 times; no antibacterial modified components and dye accelerators are added to the samples prepared in Comparative Example 4, so the antibacterial properties and color fastness of the fabrics are poor.

[0088] The above contents are merely examples and explanations of the concept of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the concept of the invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

Claims

1. A method for preparing a thermal sublimation fabric with high color fastness, characterized in that: The following steps are involved: The antibacterial fabric is placed in a printer, and the dye is printed according to the required pattern by the printer. After the printing is completed, the fabric is treated with a pressing machine at a transfer temperature of 190 to 210°C for 30 to 70 seconds, and then washed, dried, and shaped to obtain a thermal sublimation fabric; The antibacterial fabric is made of antibacterial polyester fiber through a weaving process; The antibacterial polyester fiber comprises the following raw materials in parts by weight: 40 to 60 parts of polyester chips, 5 to 7 parts of antibacterial modified components, 2 to 4 parts of antioxidant 1010, 1 to 3 parts of polyethylene wax, and 1 to 2 parts of zinc stearate; The dye comprises the following raw materials in parts by weight: 20 to 40 parts of disperse dye, 5 to 10 parts of dye accelerator, 25 to 45 parts of water and 10 to 20 parts of glycerol.

2. The method for preparing a high color fastness thermal sublimation fabric according to claim 1, characterized in that: The preparation method of the antibacterial fabric comprises the following steps: (1) placing polyester chips, antibacterial modified components, antioxidant 1010, polyethylene wax and zinc stearate in a high-speed mixer, mixing them evenly, adding them into a twin-screw extruder for extrusion granulation, setting the speed of the extruder to 100-200 r / min and the temperature to 200-240° C., and obtaining a masterbatch; (2) placing the masterbatch in a melt spinning machine for melt spinning to obtain primary fibers, and then cooling, oiling, winding and other processes to obtain antibacterial polyester fibers; (3) The antibacterial polyester fiber is spun into yarn, and the yarn is woven to produce an antibacterial fabric.

3. The method for preparing a high color fastness thermal sublimation fabric according to claim 2, characterized in that: In step (2), in the melt spinning, the spinning temperature is set to 250-290° C., the spinning speed is set to 800-1000 m / min, and the spinning pressure is set to 30-50 MPa.

4. The method for preparing a high color fastness thermal sublimation fabric according to claim 2, characterized in that: The preparation method of the antibacterial modified component comprises the following steps: S1: Add porous hydroxyapatite to N,N-dimethylformamide, ultrasonically disperse for 20 to 30 minutes, pass nitrogen, exhaust the air, and then continue to add guanidine acetate and catalyst to the system. After the addition is completed, increase the system temperature to 90 to 110°C, keep warm and stir for 3 to 7 hours, wait for the material to cool naturally, centrifuge to separate the solid material, wash the solid material, and vacuum dry to obtain modified porous hydroxyapatite; S2: Under nitrogen protection, the modified porous hydroxyapatite is ultrasonically dispersed in deionized water to form a uniform dispersion, sodium pyrithione is added to the dispersion, and after the addition, it is stirred at room temperature for 1 to 3 hours, and zinc chloride is continuously added. Under stirring conditions, the system temperature is raised to 60 to 70°C and kept warm for 2 to 4 hours. The solid material is filtered and separated, and the antibacterial modified component is obtained after washing and drying.

5. The method for preparing a high color fastness thermal sublimation fabric according to claim 4, characterized in that: In step S1, the catalyst is any one of p-toluenesulfonic acid, aminosulfonic acid or trifluoromethanesulfonic acid.

6. The method for preparing a high color fastness thermal sublimation fabric according to claim 1, characterized in that: The preparation method of the dye comprises the following steps: Add disperse dye, dye accelerator, water and glycerin into a mixer and stir them mechanically to obtain the dye.

7. The method for preparing a high color fastness thermal sublimation fabric according to claim 6, characterized in that: The disperse dye is any one of disperse red, disperse orange, disperse yellow or disperse blue.

8. The method for preparing a high color fastness thermal sublimation fabric according to claim 6, characterized in that: The preparation method of the dye accelerator comprises the following steps: SS1: polyvinyl butyral and N,N-dimethylformamide are stirred and mixed to form a uniform liquid material, nitrogen is used as a protective gas, air is discharged, allyl succinic anhydride and p-toluenesulfonic acid are added to the liquid material, and the mixture is stirred at a constant temperature of 60 to 70° C. for 4 to 8 hours, and the solvent is removed by reduced pressure distillation to obtain modified polyvinyl butyral; SS2: Add modified polyvinyl butyral and dimethyl sulfoxide in sequence into a reactor filled with nitrogen, stir evenly, add p-tert-butylbenzyl mercaptan and a photoinitiator into the reactor, place the reactor under an ultraviolet lamp for 3 to 5 hours while stirring, and discharge the material to obtain a dye accelerator.

9. The method for preparing a high color fastness thermal sublimation fabric according to claim 8, characterized in that: In step SS2, the photoinitiator is any one of benzoin isopropyl ether, benzoin dimethyl ether or benzoin ethyl ether.

10. A high color fastness thermal sublimation fabric, characterized in that: The method is as claimed in claim 1.

Images