Preparation process of swimsuit fabric

Abstract

The invention discloses a swimsuit fabric preparation process, and belongs to the technical field of textile, the swimsuit fabric preparation process comprises a weaving process and a sunscreen treatment process, CeO2 particles are transferred into polyurethane shell microcapsules in an emulsion interfacial polymerization mode, and thus microcapsules with an anti-ultraviolet function are prepared; the formed sol-gel is contained in fiber pores of the swimsuit fabric through ultrasonic treatment, and the swimsuit fabric is filled with the sol-gel through ultrasonic permeation; the gel film layer is subjected to acetalation reaction under sulfuric acid through formaldehyde, and acrylic acid is polymerized with acrolein dimethyl acetal during curing to form a compact cured film layer, so that CeO2 particles in pores among fibers are protected, a hydrophobic interface is provided, the light transmission of the swimwear fabric is prevented from being increased under water adhesion, and the ultraviolet resistance is further improved. Meanwhile, the cured film layer protects the CeO2 particles to still exist after being washed for multiple times, so that the durability of the anti-ultraviolet performance is improved.

Description

Technical Field

[0001] The present invention discloses a textile technology, in particular, a preparation process of a swimsuit fabric. Background Art

[0002] When swimming, in order to reduce the resistance to water, the fabric used for swimsuits generally adopts a relatively tight material to reduce the contact area between water and the wearer. However, most of such clothing has poor wearing comfort and is limited in terms of clothing decoration.

[0003] Most swimsuits have general sun protection performance. For people wearing swimsuits outdoors, being directly exposed to sunlight is likely to cause skin damage. Conventional swimsuit fabrics mostly achieve sun protection by adding fibers with high light absorbance or by coating. However, in this way, when using fibers with high light absorbance, after the swimsuit is immersed in water, the attached moisture increases the light transmittance, resulting in a decline in anti-ultraviolet performance. Moreover, most fibers with high light absorbance can only absorb part of the ultraviolet wavelengths and cannot cover most of the harmful ultraviolet wavelengths. When using the coating method, the sun protection coating is prone to a decline in anti-ultraviolet performance under washing and other usage wear and tear and cannot have a long service life. Therefore, a new swimsuit fabric is needed to achieve better anti-ultraviolet function. Summary of the Invention

[0004] The purpose of the present invention is to provide a preparation process of a swimsuit fabric to solve the above problems.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A preparation process of a swimsuit fabric, including a knitting process and a sun protection treatment process. The knitting process includes the following steps:

[0006] Use the bottom knitting yarn to start the bottom. The bottom knitting yarn is knitted into a false flat stitch. The front bed needles and the back bed needles are knitted alternately without connection. In the previous row, alternate knitting is carried out on the front bed and the back bed. In the next two rows, knitting is carried out on the non-same needle bed as the previous row. Use the bottom cloth as the base cloth and carry out rib knitting with a sesame dot structure and an air layer structure alternately. The connection part between the sesame dot structure and the air layer structure is knitted with a 2-row single-sided structure by alternate knitting. The 2-row single-sided structure of the connection part is knitted with 1 row of single-sided structure of the front needle bed and 1 row of single-sided structure of the back needle bed. When finishing the edge, alternate vertical knitting is carried out at the edge of the bottom cloth and the surface layer;

[0007] Carry out a sun protection treatment process on the swimsuit fabric prepared by knitting. The sun protection treatment process includes the following steps:

[0008] A1, Mix the following anti-ultraviolet microcapsules, binder J-163, penetrant LM-1, softener polysiloxane, thickener FS-300H and distilled water in a magnetic stirring kettle to obtain a slurry;

[0009] A2, immersing the swimsuit fabric into the slurry and rolling it, with a rolling rate of 90%, and then repeating the steps of rolling, drying and baking at least twice to obtain a preliminarily treated swimsuit fabric;

[0010] A3, adding polyvinyl alcohol to a lithium chloride / dimethylacetamide solution system, mixing, heating and stirring, cooling, sealing and continuing to stir to obtain a lithium chloride / dimethylacetamide solution of polyvinyl alcohol, immersing a swimsuit fabric in the solution, adding borax to form a gel system, transferring the preliminarily treated swimsuit fabric together with the gel system to an ultrasonic machine, heating and increasing the pressure to continue the reaction after ultrasonic treatment, and evaporating the solvent to obtain a swimsuit fabric with a gel film layer; immersing the swimsuit fabric with the gel film layer in a formaldehyde solution, adding sulfuric acid for catalysis, clamping it with a positioning frame, and repeatedly spraying the front and back sides of the swimsuit fabric with an acrylic acid solution for 2 times, wherein the acrylic acid solution is mixed with 5wt% of an initiator TPO, to obtain a swimsuit fabric after spraying treatment;

[0011] A4, exposing the swimsuit fabric after spray washing to ultraviolet light, and putting it into a drying barrel for drying after UV curing to obtain the final treated swimsuit fabric.

[0012] Preferably, the preparation of the anti-ultraviolet microcapsules comprises the following steps:

[0013] M1, Nanoparticles dissolved in anhydrous ethanol to form -ethanol solution, and -The ethanol solution was placed in an ultrasonic machine for ultrasonic treatment, and then heated by stirring in a magnetic stirring kettle. - Add 3-propylamine triethoxysilane to the ethanol solution, stir evenly again and - Add triethylamine to the ethanol solution to adjust the pH value and continue stirring to obtain Dispersion liquid;

[0014] M2, After the dispersion is cooled by water isolation, The dispersion was centrifuged to obtain a centrifugal dispersion. The centrifugal dispersion was washed three times with an ethanol solution and pure water respectively. The washed product was placed in a vacuum drying oven and dried to obtain 3-propylaminetriethoxysilane- Complex;

[0015] M3, dissolving PVA in pure water as an aqueous phase, dividing the aqueous phase into two equal parts A and B, dissolving azole ether and isocyanate in butyl acetate solution as an oil phase, putting the oil phase component into a shearing machine for shearing and then dropping it into A to form emulsion C, moving emulsion C into a magnetic stirring kettle for stirring, and adding polyethylene glycol, heating after stirring to perform polymerization reaction, raising the temperature of the emulsion C reaction solution, adding 1,4-dihydroxybutane into the emulsion C reaction solution for stirring;

[0016] M4, Add 3-propylamine triethoxysilane- The complex is added to B, and after ultrasonic treatment in an ultrasonic machine, it is added to the emulsion C reaction solution to form a mixed emulsion. The mixed emulsion is transferred to a magnetic stirring kettle and stirred. Triethylenetetramine is added to the mixed emulsion, and after continuous stirring and concentration, anti-ultraviolet microcapsules are prepared.

[0017] Preferably, the bottom warp yarn is made of 98.5 parts by mass of PET powder and 1.5 parts of a and mixed powder with a mass ratio of 1:1 as raw materials for melt spinning.

[0018] Preferably, 3 parts of the ultraviolet microcapsules are used.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] In the present invention, the density coverage rate of the swimsuit fabric is increased through a weft knitting structure. The silane coupling agent 3-propylamine triethoxysilane and nanoparticles with ultraviolet shielding efficacy are compounded, and the particles are transferred to polyurethane shell microcapsules by means of emulsion interfacial polymerization, thereby preparing microcapsules with anti-ultraviolet function;

[0021] Borax is added to the lithium chloride / dimethylacetamide solution to form a sol-gel system, and ultrasonic treatment is used to make the fiber pores of the swimsuit fabric accommodate the formed sol-gel, and the swimsuit fabric is filled through ultrasonic penetration;

[0022] Through formaldehyde, the gel film layer undergoes an acetalization reaction under sulfuric acid, and the acrylic acid solution between the swimsuit fabric fibers reacts with the gel film layer to produce hydroxylation, so that the swimsuit fabric forms a layer protection of acrolein dimethyl acetal with hydrophobic groups, and the layer protection covers the upper and lower sides of the swimsuit;

[0023] The unreacted acrylic acid solution is cured under ultraviolet light by the initiator TPO, and at the same time, the anti-ultraviolet microcapsules are broken to make the particles released into the pores between the fibers. At the same time, when acrylic acid is cured, it polymerizes with acrolein dimethyl acetal to form a dense cured film layer, thereby protecting the particles in the pores between the fibers while having a hydrophobic interface, preventing the increase in light transmittance caused by water adhesion on the swimsuit fabric, thereby improving the anti-ultraviolet performance. At the same time, the cured film layer protects the particles can still exist after multiple washes, improving the durability of the anti-ultraviolet performance. Description of the Drawings

[0024] Figure 1A knitting diagram for the false siping weave needle bed used for knitting the bottom yarn;

[0025] Figure 2 The sesame dot weave and air layer weave are used for the base yarn. Figure 1 ;

[0026] Figure 3 The sesame dot weave and air layer weave are used for the base yarn. Figure 2 ;

[0027] FIG4 is a graph showing the absorbance of combination II and combination III with respect to ultraviolet light;

[0028] Figure 5 For PET powder and and The mixed powder adopts 6 combinations and proportions corresponding to the UV transmittance;

[0029] Figure 6 The figure shows the uniformity and particle size of the slurry using three kinds of anti-UV microcapsules at the microscopic level. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0031] A preparation process of a swimsuit fabric includes a weaving process and a sunscreen treatment process, wherein the weaving process includes the following steps:

[0032] The base fabric is woven with base yarn, such as Figure 1 As shown, the bottom knitting yarn is knitted into a false four-level weave, and the front bed needles are knitted without connection and the back bed needles are knitted without connection alternately. The first row is knitted on the front bed and the back bed with alternate needles, and the next two rows are knitted on the needle beds that are not the same as the previous row. After the bottom knitting yarn is knitted, the weft plain weave is knitted, and the last row is separated by needle withdrawal, and the bottom fabric is knitted;

[0033] The surface layer weaving and edge weaving are based on the base fabric and adopt rib weaving with alternating sesame dot weave and air layer weave, such as Figure 2-Figure 3 As shown, the connecting part between the sesame dot structure and the air layer structure is knitted with 2 rows of single-sided structure by alternate needle knitting, and the 2 rows of single-sided structure of the connecting part are knitted with 1 row of front needle bed single-sided and 1 row of rear needle bed single-sided. When finishing, one-alternate-one vertical knitting is adopted at the edge of the base fabric and the surface layer; the density coverage of the swimsuit fabric is increased by the weft knitting structure.

[0034] The bottom braided yarn is prepared by crushing PET slices into PET powder and and Dry in a vacuum oven at 100°C for 8 hours; mix 98-100 parts by mass of PET powder with 0-2 parts by mass of 1:1 and Mix the powders by mixing them in a magnetic stirring kettle for 1 hour to obtain the mixed powders, feed the mixed powders into a twin-screw extruder, and adopt multi-stage temperature control, the temperatures of zone 1, zone 2, zone 3, zone 4, zone 5, die head and melt are 250°C, 275°C, 280°C, 280°C, 260°C, 260°C and 270°C respectively, the speed of the twin-screw extruder is 10rpm, the feeding speed is 5rpm, and after extrusion, the powders are spun through a spinneret with an aperture of 0.2mm and a hole number of 1200, and then cold cut and hot drawn to obtain a bottom braided yarn;

[0035] By and The mixed powder is added into PET for modification, and the UV-resistant modified PET fiber is prepared by a twin-screw melt blending method, and then melt-spinning is performed to prepare the base braided yarn;

[0036] Among them, PET powder and and The mixed powder adopts the following 6 combination ratios:

[0037] Ⅰ: 100 parts of PET powder;

[0038] Ⅱ: 99.5 parts PET powder, 0.5 parts Powder;

[0039] III: 99.5 parts PET powder, 0.5 parts Powder;

[0040] IV: 99.5 parts PET powder, 0.5 parts and Mixed powder;

[0041] V: 99 parts PET powder, 1 part and Mixed powder;

[0042] Ⅵ: 98.5 parts PET powder, 1.5 parts and Mixed powder;

[0043] The breaking strength was tested by standard tensile test, and the anti-ultraviolet performance was tested by UV spectrophotometer on the above swimsuit fabrics with different components cut into 10×10cm samples. The UV wavelength was 250-400nm, barium sulfate was used as the bottom shield, the slit width was 20mm, the scanning interval was 0.5nm, and the UV transmittance was tested. Figure 4 As shown, add separately in Ⅱ and Ⅲ Powder and Powders can absorb ultraviolet rays and reduce the transmittance of ultraviolet rays. The powder has good absorption of ultraviolet light at 290-340nm, and when the wavelength exceeds 340nm, The powder's absorption rate of ultraviolet light decreases. The powder's absorption rate of ultraviolet light is greater than Powder, due to The band gap is wide, and it has good absorption for medium, low and short ultraviolet. The electronic layer structure and bandgap width are large, and the shielding range for high-wavelength ultraviolet rays is also wide, so the two powders are combined to and Mixed powder as raw material can improve the UV absorption rate of the base yarn in the UVA and UVB regions, such as Figure 5 As shown in Ⅳ-Ⅵ, it can be seen that as and As the content of mixed powder increases, the absorption rate of ultraviolet light gradually increases, and the breaking strength is improved. However, when and When the mixed powder reaches 1.5 parts, the breaking strength of the modified fiber begins to decrease. This is because and When the proportion of mixed powder is less than 1.5 parts, it will increase the crystallinity of PET, thereby playing a plasticizing effect and thus improving the breaking strength of the bottom yarn. However, excessive and Mixed powders will hinder the crystallization of polyester, resulting in an increase in impurities during spinning of the bottom yarn, which reduces the breaking strength. In summary, 98.5 parts of PET powder and 1.5 parts of and The mixed powder is used as the ratio for preparing the base braided yarn.

[0044] The preparation of anti-ultraviolet microcapsules includes the following steps:

[0045] M1, The nanoparticles were dissolved in anhydrous ethanol to form a 0.01 g / ml -ethanol solution, and -The ethanol solution was placed in an ultrasonic machine and treated with ultrasound for 30 minutes, then transferred to an oil bath and heated to 70°C by magnetic stirring. - Add 0.001 g / ml of 3-propylamine triethoxysilane to the ethanol solution, stir it evenly in a magnetic stirring kettle again, and then - The ethanol solution was adjusted to pH 6 by adding triethylamine and stirred at 70 °C for 5 h. Dispersion liquid;

[0046] M2, The dispersion was cooled to 25°C by water separation. The dispersion was put into a centrifuge and centrifuged at 3000 rpm for 30 minutes to obtain a centrifugal dispersion. The centrifugal dispersion was washed three times with an ethanol solution and pure water, respectively, and the washed product was placed in a vacuum drying oven and dried at 60° C. to obtain 3-propylaminetriethoxysilane- Complex;

[0047] M3, dissolve the following 2 parts of PVA by mass into 100 parts of pure water as the water phase, divide the water phase into two equal parts A and B, dissolve 6 parts of azole ether and 4 parts of isocyanate into 50 parts of butyl acetate solution as the oil phase, put the oil phase component into a shearing machine and drip it into A at a shear rate of 12000rpm to form emulsion C, move emulsion C into a magnetic stirring kettle and stir for 5 minutes, add 2 parts of polyethylene glycol during the stirring process, heat to 40°C after stirring to carry out polymerization reaction for 1 hour, raise the temperature of the emulsion C reaction solution to 60°C, add 1 part of 1,4-dihydroxybutane to the emulsion C reaction solution, and stir at 60°C for 1 hour;

[0048] M4, 0.1 part 3-propylamine triethoxysilane- After the complex was added to B, it was ultrasonically treated in an ultrasonic machine for 20 minutes and then added to the reaction solution of emulsion C to form a mixed emulsion. The mixed emulsion was transferred to a magnetic stirring kettle and stirred at 60°C for 1 hour. 10 parts of triethylenetetramine were added to the mixed emulsion, and the mixture was stirred for 1 hour and concentrated to obtain anti-ultraviolet microcapsules.

[0049] Use silane coupling agent silane coupling agent 3-propylamine triethoxysilane and nano-silane with UV shielding effect The particles are compounded by emulsion interfacial polymerization. The particles are transferred into polyurethane shell microcapsules, thereby preparing microcapsules with UV resistance;

[0050] The woven swimsuit fabric is subjected to a sunscreen treatment process, the sunscreen treatment process comprising the following steps:

[0051] A1, 2-4 parts of anti-ultraviolet microcapsules, 4 parts of adhesive J-163, 0.3 parts of penetrant LM-1, 3 parts of softener polysiloxane, 0.9 parts of thickener FS-300H and 20 parts of distilled water were stirred and mixed in a magnetic stirring kettle for 30 minutes to prepare a slurry;

[0052] like Figure 6 The figure shows the uniformity of the slurry at the microscopic level using three kinds of anti-UV microcapsules (2, 3, and 4). When using 2 parts, the anti-UV microcapsules are relatively sparse and cannot cover the fibers of the swimsuit fabric in the subsequent process; when using 3 parts, the anti-UV microcapsules are evenly distributed, and the particle size of 900nm can better adhere to the fibers of the swimsuit fabric; when using 4 parts, the anti-UV microcapsules agglomerate, the particle size becomes larger, and cannot be dispersed on the fibers of the swimsuit fabric; in summary, 3 parts of UV microcapsules are selected.

[0053] A2, immerse the swimsuit fabric in the slurry and roll it for 1 hour, using a bath ratio of 1:20 and a rolling speed of 3.8 r / min to obtain a swimsuit fabric with a liquid carrying rate of 90%, then put the swimsuit fabric into a drying barrel and dry it at 110°C for 20 minutes, and bake it at 150°C for 2 minutes, repeat the immersion, drying and baking at least 2 times to obtain the preliminarily treated swimsuit fabric;

[0054] A3, adding 10 parts of polyvinyl alcohol to 90 parts of lithium chloride / dimethylacetamide solution system, the mass ratio of lithium chloride / dimethylacetamide is 3:7, heating to 70°C in a reactor and stirring for 10 minutes, cooling to 25°C and sealing for 3 hours and stirring for 6 hours to obtain lithium chloride / dimethylacetamide solution of polyvinyl alcohol, immersing swimsuit fabric in lithium chloride / dimethylacetamide solution of polyvinyl alcohol, adding 0.1g borax to form a gel system, transferring the preliminarily treated swimsuit fabric together with lithium chloride / dimethylacetamide solution of polyvinyl alcohol to an ultrasonic machine for ultrasonic treatment for 30 minutes, and then transferring to a high-pressure reactor and heating at 100°C, increasing the pressure to 23MPa and continuing the reaction for 1 hour, and then the solvent evaporates to obtain a swimsuit fabric with a gel film layer;

[0055] Borax is added to a lithium chloride / dimethylacetamide solution to form a sol-gel system, and the fiber pores of the swimsuit fabric are treated with ultrasound to accommodate the formed sol-gel, and the swimsuit fabric is filled with ultrasound penetration;

[0056] A4, immersing the swimsuit fabric with the gel film layer in a 35% formaldehyde solution with a bath ratio of 1:2, and adding 0.1g / ml sulfuric acid to the solution for catalysis, reacting at 70°C for 20 minutes, clamping both ends through a positioning frame, and then using a 30% acrylic acid solution to repeatedly spray back and forth on both sides of the swimsuit fabric twice, wherein the acrylic acid solution is mixed with 5wt% of the initiator TPO, to obtain a swimsuit fabric after spraying treatment;

[0057] The gel film layer undergoes acetalization reaction in sulfuric acid by using formaldehyde, and the acrylic acid solution between the fibers of the swimsuit fabric is then hydroxylated with the gel film layer, so that the swimsuit fabric forms a layer of acrolein dimethyl acetal with hydrophobic groups for protection;

[0058] A5, the swimsuit fabric after spray washing is exposed to ultraviolet light with a wavelength of 365nm for 10s and an intensity of 80mW / cm². After UV curing, it is placed in a drying barrel and dried at 80℃ for 30min to obtain the final treated swimsuit fabric;

[0059] The incompletely hydroxylated acrylic acid solution is cured by the initiator TPO under UV light exposure, while the UV-resistant microcapsules are broken. The particles are released into the pores between the fibers. At the same time, the acrylic acid polymerizes with acrolein dimethyl acetal when it cures to form a dense cured film layer, thereby protecting the pores between the fibers. The particles also have a hydrophobic interface, which prevents the swimsuit fabric from increasing light transmittance due to water adhesion, thereby improving the UV resistance and curing the film layer to protect The particles are able to survive multiple washes, improving the durability of the UV protection.

[0060] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0061] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A process for preparing a swimsuit fabric, characterized in that: The method comprises a weaving process and a sunscreen treatment process, wherein the weaving process comprises the following steps: The bottom knitting yarn is used to start the base, and the bottom knitting yarn is used to weave a false four-level organization. The front bed needle knitting without connection and the back bed needle knitting without connection are alternately arranged. The first row is knitted on the front bed and the back bed with alternate needles, and the next two rows are knitted on the needle beds that are not the same as the previous row. The base fabric is used as the base fabric and rib knitting with sesame point organization and air layer organization is used. The connecting part between the sesame point organization and the air layer organization is knitted with 2 rows of single-sided organization by alternate needle knitting. The 2 rows of single-sided organization in the connecting part are knitted with 1 row of front needle bed single-sided and 1 row of back needle bed single-sided. When closing the edges, one-alternate-one vertical knitting is used at the edges of the base fabric and the surface layer. The woven swimsuit fabric is subjected to a sunscreen treatment process, the sunscreen treatment process comprising the following steps: A1, the following anti-ultraviolet microcapsules, adhesive J-163, penetrant LM-1, softener polysiloxane, thickener FS-300H and distilled water are stirred and mixed in a magnetic stirring kettle to prepare a slurry; A2, immersing the swimsuit fabric into the slurry and rolling it, with a rolling rate of 90%, and then repeating the steps of rolling, drying and baking at least twice to obtain a preliminarily treated swimsuit fabric; A3, adding polyvinyl alcohol to a lithium chloride / dimethylacetamide solution system, mixing, heating and stirring, cooling, sealing and continuing to stir to obtain a lithium chloride / dimethylacetamide solution of polyvinyl alcohol, immersing a swimsuit fabric in the solution, adding borax to form a gel system, transferring the preliminarily treated swimsuit fabric together with the gel system to an ultrasonic machine, heating and increasing the pressure to continue the reaction after ultrasonic treatment, and evaporating the solvent to obtain a swimsuit fabric with a gel film layer; immersing the swimsuit fabric with the gel film layer in a formaldehyde solution, adding sulfuric acid for catalysis, clamping it with a positioning frame, and repeatedly spraying the front and back sides of the swimsuit fabric with an acrylic acid solution for 2 times, wherein the acrylic acid solution is mixed with 5wt% of an initiator TPO, to obtain a swimsuit fabric after spraying treatment; A4, exposing the swimsuit fabric after spray washing to ultraviolet light, and putting it into a drying barrel for drying after UV curing to obtain the final treated swimsuit fabric.

2. The preparation process of a swimsuit fabric according to claim 1, characterized in that: The preparation of anti-ultraviolet microcapsules includes the following steps: M1, Nanoparticles dissolved in anhydrous ethanol to form -ethanol solution, and -The ethanol solution was placed in an ultrasonic machine for ultrasonic treatment, and then heated by stirring in a magnetic stirring kettle. - Add 3-propylamine triethoxysilane to the ethanol solution, stir evenly again and - Add triethylamine to the ethanol solution to adjust the pH value and continue stirring to obtain Dispersion liquid; M2, After the dispersion is cooled by water isolation, The dispersion was centrifuged to obtain a centrifugal dispersion. The centrifugal dispersion was washed three times with an ethanol solution and pure water respectively. The washed product was placed in a vacuum drying oven and dried to obtain 3-propylaminetriethoxysilane- Complex; M3, dissolving PVA in pure water as an aqueous phase, dividing the aqueous phase into two equal parts A and B, dissolving azole ether and isocyanate in butyl acetate solution as an oil phase, putting the oil phase component into a shearing machine for shearing and then dropping it into A to form emulsion C, moving emulsion C into a magnetic stirring kettle for stirring, and adding polyethylene glycol, heating after stirring to perform polymerization reaction, raising the temperature of the emulsion C reaction solution, adding 1,4-dihydroxybutane into the emulsion C reaction solution for stirring; M4, 3-propylaminetriethoxysilane- After the complex is added to B, it is ultrasonically treated in an ultrasonic machine and then added to the emulsion C reaction solution to form a mixed emulsion. The mixed emulsion is transferred to a magnetic stirring kettle for stirring. Triethylenetetramine is added to the mixed emulsion, and the stirring is continued to concentrate to obtain anti-ultraviolet microcapsules.

3. The preparation process of a swimsuit fabric according to claim 2, characterized in that: The bottom braided yarn is made of 98.5 parts by mass of PET powder and 1.5 parts by mass of 1:1 and The mixed powder is used as raw material for melt spinning.

4. The process for preparing a swimsuit fabric according to claim 3, characterized in that: The ultraviolet microcapsules are used in 3 parts.

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