Antifouling anti-wrinkle superfine polyester fiber fabric and preparation method thereof

Abstract

The invention provides an antifouling anti-wrinkle superfine polyester fiber fabric and a preparation method thereof, the preparation method comprises the following steps: S1, dissolving polyester chips in a trifluoroacetic acid / dichloromethane solution to obtain a solution A; s2, adding a copper nitrate solution into the solution A to obtain a solution B, carrying out electrostatic spinning on the solution B to obtain polyester / copper nitrate fiber yarns, and then weaving to obtain the polyester / copper nitrate fabric, s3, dipping the terylene / copper nitrate fabric in the cassia seed extract solution, drying, and dipping the terylene / copper nitrate fabric in an alkaline solution to obtain a terylene fabric with liquid and containing elemental copper; and S4, dipping the polyester fabric with the liquid and containing the elemental copper in a 3, 4-epoxy cyclohexyl methacrylate / ethanol solution for two times of dipping and two times of rolling to obtain the antifouling and anti-wrinkle superfine polyester fiber fabric. The obtained fabric has good antifouling and anti-wrinkle performance.

Description

Technical Field

[0001] The invention relates to the technical field of textile fabrics, and in particular to a stain-resistant and wrinkle-resistant ultrafine polyester fiber fabric and a preparation method thereof. Background Art

[0002] As one of the most common synthetic fibers, polyester occupies an important position in the textile industry due to its excellent physical properties and low cost. In recent years, with the diversification of demand in the textile market and technological progress, the application scope of polyester fibers has continued to expand, including clothing fabrics, household items, industrial fabrics and other fields. Polyester fibers are developing in the direction of functionality and environmental protection, such as the development of polyester fibers with anti-wrinkle and anti-fouling functions. In recent years, a variety of technologies for improving polyester fabrics have emerged. For example, by coating an anti-fouling layer on the surface of polyester fabrics, its anti-fouling ability can be significantly improved. However, the coating obtained by simple surface coating has the risk of easy peeling and falling off, so it is very necessary to develop anti-fouling and anti-wrinkle ultra-fine polyester fiber fabrics textile fabrics. Summary of the invention

[0003] Technical problem to be solved: The present invention provides a stain-resistant and wrinkle-resistant ultrafine polyester fiber fabric and a preparation method thereof. The preparation method utilizes a two-dimensional copper single-substance network and a lotus leaf-like structure on the surface of the fabric to achieve stain-resistant and wrinkle-resistant properties of the fabric.

[0004] Technical solution: A stain-resistant and wrinkle-resistant ultrafine polyester fiber fabric and a preparation method thereof, the preparation method comprising the following steps: S1. The polyester chips were dissolved in trifluoroacetic acid / dichloromethane solution to obtain solution A; S2. adding the copper nitrate solution to the solution A to obtain the solution B, electrospinning the solution B to obtain the polyester / copper nitrate fiber yarn, and then weaving to obtain the polyester / copper nitrate fabric; S3. The polyester / copper nitrate fabric is immersed in the Cassia seed extract solution, and after drying, the polyester / copper nitrate fabric is immersed in an alkaline solution to obtain a polyester fabric containing copper in a liquid; S4. The polyester fabric with liquid copper-containing element is immersed in 3,4-epoxycyclohexyl methacrylate / ethanol solution and then double-dipped and double-rolled to obtain anti-fouling and anti-wrinkle ultrafine polyester fiber fabric. Preferably, the volume ratio of trifluoroacetic acid to dichloromethane in S1 is 6 to 10:1, and the mass fraction of solution A is 8 to 16 wt %. Preferably, the concentration of the copper nitrate solution in S2 is 0.4-0.6 mol / L, and the volume ratio of solution A to solution B is 1:0.1-0.4. Preferably, the positive and negative voltages of the electrostatic spinning in S2 are 15 to 25 kV, the spinning rate is 0.1 to 0.5 mL / min, the rotation speed of the collecting roller is 0.2 to 0.5 r / min, the receiving distance is 15 to 20 cm, the twister speed is 90 to 120 r / min, and the warp density of the polyester / copper nitrate fabric is 140 to 180 strands / 10 cm, and the weft density is 100 to 110 strands / 10 cm. Preferably, the method for preparing the Cassia seed extract solution in S3 comprises the following steps: S11. The Cassia seed powder having a particle size of 30 to 50 mesh is added to a volume fraction of 50 to 90% ethanol solution, the solid-liquid ratio of the Cassia seed powder to the ethanol solution is 1:8 to 10 to obtain a suspension; S12. The suspension was heated to reflux at 70-85°C in a water bath for 1.5-2.5h, and the mixture was repeated 2-4 times to obtain an extract; S13. Concentrate the extract obtained in S12 to obtain a Cassia seed extract solution. Preferably, the concentration method in S13 is vacuum distillation, and the pressure of the vacuum distillation is 10-15 kPa and the temperature is 45-55°C. Preferably, the concentration of the Cassia seed extract solution in S3 is 0.8-1.5 mol / L, the weight ratio of the Cassia seed extract solution to the polyester / copper nitrate fabric is 20-40:1, the drying temperature is 60-80°C, and the drying time is 60-100 min. Preferably, the pH of the alkaline solution in S3 is 8-10, the alkaline solution is one or both of a sodium hydroxide solution and a potassium hydroxide solution, and the liquid-carrying rate of the liquid-carrying polyester / copper nitrate fabric is 70-100%. Preferably, the concentration of the 3,4-epoxycyclohexyl methacrylate / ethanol solution in S4 is 25-40 g / L, and the weight ratio of the 3,4-epoxycyclohexyl methacrylate / ethanol solution to the copper-containing polyester fabric is 30-45:1. Preferably, the pre-baking temperature of the double dipping and double rolling in S4 is 70-80° C., the pre-baking time is 2-3 min, the baking temperature is 100-130° C., the baking time is 3-5 min, and the rolling rate is 75-80%. Beneficial effects: The present invention has the following advantages: In the present invention, copper ions are embedded in the fiber through a blending process, and then a two-dimensional copper network is generated inside the fiber through the reduction effect of anthraquinone compounds in a cassia seed extract solution, thereby enhancing the intermolecular force and limiting the mutual movement between macromolecular chains, forming multiple supporting points in the fabric to disperse the stress on the fabric, reducing the stress concentration in a single area, and thus inhibiting the generation of wrinkles; in addition, in the present invention, hydroxyl groups are generated on the surface of the polyester fabric through alkali treatment of the polyester fabric, and the hydroxyl groups can form covalent ether bonds with the epoxy bonds in 3,4-epoxycyclohexyl methacrylate, and solidify to form a film structure on the surface of the fabric, and the alkali treatment makes the surface of the fabric present an irregular groove structure while also partially exposing the copper element, forming a unique micro-nano structure similar to the surface of a lotus leaf on the surface of the fabric, so that the contact area between the surface of the fabric and the stain is greatly reduced, forming an extremely thin air layer, so that the surface of the fabric presents superhydrophobic properties, thereby giving the fabric anti-fouling and anti-wrinkle properties. DETAILED DESCRIPTION The present invention will be further described below in conjunction with embodiments, which are explanations of the present invention and are not limited to the following embodiments: Example 1 A stain-resistant and wrinkle-resistant ultrafine polyester fiber fabric and a preparation method thereof, the preparation method comprising the following steps: S1. The polyester chips were dissolved in a trifluoroacetic acid / dichloromethane solution, wherein the volume ratio of trifluoroacetic acid to dichloromethane was 6:1, to obtain a solution A having a mass fraction of 8 wt %; S2. A copper nitrate solution with a concentration of 0.4 mol / L is added to solution A to obtain solution B, wherein the volume ratio of solution A to solution B is 1:0.1, and solution B is used for electrostatic spinning to obtain polyester / copper nitrate fiber yarn, wherein the positive and negative electrode voltages of the electrostatic spinning are 15 kV, the spinning rate is 0.1 mL / min, the speed of the collecting roller is 0.2 r / min, the receiving distance is 15 cm, the speed of the twister is 90 r / min, and then a polyester / copper nitrate fabric with a warp density of 140 strands / 10 cm and a weft density of 100 strands / 10 cm is obtained by weaving; S3. The polyester / copper nitrate fabric is immersed in a 0.8 mol / L Cassia seed extract solution, wherein the weight ratio of the Cassia seed extract solution to the polyester / copper nitrate fabric is 20:1, and after drying at 60°C for 60 min, the polyester / copper nitrate fabric is immersed in a sodium hydroxide solution at a pH of 8 to obtain a polyester fabric with liquid containing copper, wherein the liquid rate of the polyester / copper nitrate fabric with liquid is 70%; S4. The polyester fabric with liquid copper-containing element is immersed in a 3,4-epoxycyclohexyl methacrylate / ethanol solution with a concentration of 25g / L, and then double-dipped and double-rolled. The weight ratio of the 3,4-epoxycyclohexyl methacrylate / ethanol solution to the polyester fabric with liquid copper-containing element is 30:1. The pre-baking temperature of the double-dip and double-rolling is 70°C, the pre-baking time is 2min, the baking temperature is 100°C, the baking time is 3min, and the rolling rate is 75% to obtain a stain-resistant and wrinkle-resistant ultrafine polyester fiber fabric; The method for preparing the Cassia seed extract solution in S3 comprises the following steps: S11. The Cassia seed powder having a particle size of 30 mesh was added to a 50% volume fraction of an ethanol solution, the solid-liquid ratio of the Cassia seed powder to the ethanol solution was 1:8 to obtain a suspension; S12. The suspension was heated to reflux at 70°C in a water bath for 1.5 h, and the process was repeated twice to obtain an extract; S13. The extract obtained in S12 is subjected to reduced pressure distillation at a pressure of 10 kPa and a temperature of 45° C. to obtain a Cassia seed extract solution. Example 2 A stain-resistant and wrinkle-resistant ultrafine polyester fiber fabric and a preparation method thereof, the preparation method comprising the following steps: S1. The polyester chips were dissolved in a trifluoroacetic acid / dichloromethane solution, wherein the volume ratio of trifluoroacetic acid to dichloromethane was 10:1, to obtain a solution A having a mass fraction of 16 wt %; S2. A copper nitrate solution with a concentration of 0.6 mol / L is added to solution A to obtain solution B, wherein the volume ratio of solution A to solution B is 1:0.4, and solution B is used for electrostatic spinning to obtain polyester / copper nitrate fiber yarn, wherein the positive and negative electrode voltages of the electrostatic spinning are 25 kV, the spinning rate is 0.5 mL / min, the speed of the collecting roller is 0.5 r / min, the receiving distance is 20 cm, the speed of the twister is 120 r / min, and then a polyester / copper nitrate fabric with a warp density of 180 strands / 10 cm and a weft density of 110 strands / 10 cm is obtained by weaving; S3. The polyester / copper nitrate fabric is immersed in a 1.5 mol / L Cassia seed extract solution, wherein the weight ratio of the Cassia seed extract solution to the polyester / copper nitrate fabric is 40:1, and after drying at 80°C for 100 min, the polyester / copper nitrate fabric is immersed in a potassium hydroxide solution at a pH of 10 to obtain a polyester fabric with liquid containing copper, wherein the liquid rate of the polyester / copper nitrate fabric is 100%; S4. The polyester fabric with liquid copper-containing element is immersed in a 3,4-epoxycyclohexyl methacrylate / ethanol solution with a concentration of 40g / L, and then double-dipped and double-rolled. The weight ratio of the 3,4-epoxycyclohexyl methacrylate / ethanol solution to the polyester fabric with liquid copper-containing element is 45:1. The pre-baking temperature of the double-dip and double-rolling is 80°C, the pre-baking time is 3min, the baking temperature is 130°C, the baking time is 5min, and the rolling rate is 80% to obtain a stain-resistant and wrinkle-resistant ultrafine polyester fiber fabric; The method for preparing the Cassia seed extract solution in S3 comprises the following steps: S11. The Cassia seed powder having a particle size of 50 mesh was added to a 90% volume fraction of an ethanol solution, the solid-liquid ratio of the Cassia seed powder to the ethanol solution was 1:10 to obtain a suspension; S12. The suspension was heated to reflux at 85°C in a water bath for 2.5 h, and the process was repeated 4 times to obtain an extract; S13. The extract obtained in S12 is subjected to reduced pressure distillation at a pressure of 15 kPa and a temperature of 55° C. to obtain a Cassia seed extract solution. Example 3 A stain-resistant and wrinkle-resistant ultrafine polyester fiber fabric and a preparation method thereof, the preparation method comprising the following steps: S1. The polyester chips were dissolved in a trifluoroacetic acid / dichloromethane solution, wherein the volume ratio of trifluoroacetic acid to dichloromethane was 8:1, to obtain a solution A having a mass fraction of 10 wt %; S2. A 0.5 mol / L copper nitrate solution is added to solution A to obtain solution B, wherein the volume ratio of solution A to solution B is 1:0.3, and solution B is used for electrostatic spinning to obtain polyester / copper nitrate fiber yarn, wherein the positive and negative electrode voltages of the electrostatic spinning are 18 kV, the spinning rate is 0.4 mL / min, the speed of the collecting roller is 0.3 r / min, the receiving distance is 18 cm, the speed of the twister is 100 r / min, and then the polyester / copper nitrate fabric with a warp density of 150 strands / 10 cm and a weft density of 105 strands / 10 cm is obtained by weaving; S3. The polyester / copper nitrate fabric is immersed in a 1.0 mol / L Cassia seed extract solution, wherein the weight ratio of the Cassia seed extract solution to the polyester / copper nitrate fabric is 25:1, and after drying at 60°C for 70 minutes, the polyester / copper nitrate fabric is immersed in a sodium hydroxide solution at a pH of 9 to obtain a polyester fabric with liquid containing copper, wherein the liquid rate of the polyester / copper nitrate fabric with liquid is 80%; S4. The polyester fabric with liquid copper-containing element is immersed in a 30g / L 3,4-epoxycyclohexyl methacrylate / ethanol solution for double dipping and double rolling, wherein the weight ratio of the 3,4-epoxycyclohexyl methacrylate / ethanol solution to the polyester fabric with liquid copper-containing element is 35:1, the pre-baking temperature of the double dipping and double rolling is 70°C, the pre-baking time is 3min, the baking temperature is 110°C, the baking time is 4min, and the rolling rate is 80% to obtain a stain-resistant and wrinkle-resistant ultrafine polyester fiber fabric; The method for preparing the Cassia seed extract solution in S3 comprises the following steps: S11. The Cassia seed powder having a particle size of 35 mesh was added to a 60% volume fraction of an ethanol solution, the solid-liquid ratio of the Cassia seed powder to the ethanol solution was 1:9 to obtain a suspension; S12. The suspension was heated in a water bath at 75°C for 2 h and refluxed for 4 times to obtain an extract; S13. The extract obtained in S12 is subjected to reduced pressure distillation at a pressure of 12 kPa and a temperature of 50° C. to obtain a Cassia seed extract solution. Example 4 A stain-resistant and wrinkle-resistant ultrafine polyester fiber fabric and a preparation method thereof, the preparation method comprising the following steps: S1. The polyester chips are dissolved in a trifluoroacetic acid / dichloromethane solution, wherein the volume ratio of trifluoroacetic acid to dichloromethane is 6 to 10:1, to obtain a solution A having a mass fraction of 12 wt %; S2. A copper nitrate solution with a concentration of 0.5 mol / L is added to solution A to obtain solution B, wherein the volume ratio of solution A to solution B is 1:0.3, and solution B is used for electrostatic spinning to obtain polyester / copper nitrate fiber yarn, wherein the positive and negative electrode voltages of the electrostatic spinning are 22 kV, the spinning rate is 0.4 mL / min, the speed of the collecting roller is 0.2 r / min, the receiving distance is 15 cm, the speed of the twister is 100 r / min, and then the polyester / copper nitrate fabric with a warp density of 160 strands / 10 cm and a weft density of 100 strands / 10 cm is obtained by weaving; S3. The polyester / copper nitrate fabric is immersed in a 0.8 mol / L Cassia seed extract solution, wherein the weight ratio of the Cassia seed extract solution to the polyester / copper nitrate fabric is 25:1, and after drying at 60°C for 60 minutes, the polyester / copper nitrate fabric is immersed in a sodium hydroxide solution at a pH of 8 to obtain a polyester fabric with liquid containing copper, and the liquid rate of the liquid-carrying polyester / copper nitrate fabric is 75%; S4. The polyester fabric with liquid copper-containing element is immersed in a 30g / L 3,4-epoxycyclohexyl methacrylate / ethanol solution for double dipping and double rolling, wherein the weight ratio of the 3,4-epoxycyclohexyl methacrylate / ethanol solution to the polyester fabric with liquid copper-containing element is 40:1, the pre-baking temperature of the double dipping and double rolling is 70°C, the pre-baking time is 2min, the baking temperature is 100°C, the baking time is 5min, and the rolling rate is 75% to obtain a stain-resistant and wrinkle-resistant ultrafine polyester fiber fabric; The method for preparing the Cassia seed extract solution in S3 comprises the following steps: S11. The Cassia seed powder having a particle size of 45 mesh was added to a 60% volume fraction of an ethanol solution, the solid-liquid ratio of the Cassia seed powder to the ethanol solution was 1:8 to obtain a suspension; S12. The suspension was heated to reflux at 75°C in a water bath for 2.5 h, and the process was repeated 4 times to obtain an extract; S13. The extract obtained in S12 is subjected to reduced pressure distillation at a pressure of 14 kPa and a temperature of 55° C. to obtain a Cassia seed extract solution. Example 5 A stain-resistant and wrinkle-resistant ultrafine polyester fiber fabric and a preparation method thereof, the preparation method comprising the following steps: S1. The polyester chips are dissolved in a trifluoroacetic acid / dichloromethane solution, wherein the volume ratio of trifluoroacetic acid to dichloromethane is 6 to 10:1, to obtain a solution A having a mass fraction of 14 wt %; S2. A 0.5 mol / L copper nitrate solution was added to solution A to obtain solution B, wherein the volume ratio of solution A to solution B was 1:0.3, and solution B was used for electrostatic spinning to obtain polyester / copper nitrate fiber yarn, wherein the positive and negative voltages of the electrostatic spinning were 22 kV, the spinning rate was 0.4 mL / min, the speed of the collecting roller was 0.3 r / min, the receiving distance was 18 cm, the speed of the twister was 110 r / min, and then a polyester / copper nitrate fabric with a warp density of 140 strands / 10 cm and a weft density of 100 strands / 10 cm was obtained by weaving; S3. The polyester / copper nitrate fabric is immersed in a 1 mol / L Cassia seed extract solution, wherein the weight ratio of the Cassia seed extract solution to the polyester / copper nitrate fabric is 25:1, and after drying at 75°C for 90 minutes, the polyester / copper nitrate fabric is immersed in an alkaline solution at a pH of 10 to obtain a polyester fabric with liquid containing copper, wherein the alkaline solution is one or both of a sodium hydroxide solution and a potassium hydroxide solution, and the liquid rate of the liquid-carrying polyester / copper nitrate fabric is 70-100%; S4. The polyester fabric with liquid copper-containing element was immersed in a 30g / L 3,4-epoxycyclohexyl methacrylate / ethanol solution for double dipping and double rolling, wherein the weight ratio of the 3,4-epoxycyclohexyl methacrylate / ethanol solution to the polyester fabric with liquid copper-containing element was 38:1, the pre-baking temperature of the double dipping and double rolling was 75°C, the pre-baking time was 2min, the baking temperature was 110°C, the baking time was 4min, and the rolling rate was 75% to obtain a stain-resistant and wrinkle-resistant ultrafine polyester fiber fabric; The method for preparing the Cassia seed extract solution in S3 comprises the following steps: S11. The Cassia seed powder having a particle size of 45 mesh was added to a volume fraction of 65% ethanol solution, the solid-liquid ratio of the Cassia seed powder to the ethanol solution was 1:8 to obtain a suspension; S12. The suspension was heated in a water bath at 75°C for 2 h and refluxed for 4 times to obtain an extract; S13. The extract obtained in S12 is subjected to reduced pressure distillation at a pressure of 12 kPa and a temperature of 50° C. to obtain a Cassia seed extract solution. Example 6 A stain-resistant and wrinkle-resistant ultrafine polyester fiber fabric and a preparation method thereof, the preparation method comprising the following steps: S1. The polyester chips were dissolved in a trifluoroacetic acid / dichloromethane solution, wherein the volume ratio of trifluoroacetic acid to dichloromethane was 8:1, to obtain a solution A having a mass fraction of 14 wt %; S2. A 0.5 mol / L copper nitrate solution was added to solution A to obtain solution B, wherein the volume ratio of solution A to solution B was 1:0.3, and solution B was used for electrostatic spinning to obtain polyester / copper nitrate fiber yarn, wherein the positive and negative voltages of the electrostatic spinning were 22 kV, the spinning rate was 0.4 mL / min, the speed of the collecting roller was 0.4 r / min, the receiving distance was 18 cm, the speed of the twister was 120 r / min, and then a polyester / copper nitrate fabric with a warp density of 160 strands / 10 cm and a weft density of 100 strands / 10 cm was obtained by weaving; S3. The polyester / copper nitrate fabric is immersed in a 0.8 mol / L Cassia seed extract solution, wherein the weight ratio of the Cassia seed extract solution to the polyester / copper nitrate fabric is 20:1, and after drying at 65°C for 80 min, the polyester / copper nitrate fabric is immersed in a potassium hydroxide solution at a pH of 8 to obtain a polyester fabric with liquid containing copper, wherein the liquid rate of the polyester / copper nitrate fabric is 95%; S4. The polyester fabric with liquid copper-containing element is immersed in a 35g / L 3,4-epoxycyclohexyl methacrylate / ethanol solution for double dipping and double rolling, wherein the weight ratio of the 3,4-epoxycyclohexyl methacrylate / ethanol solution to the polyester fabric with liquid copper-containing element is 30:1, the pre-baking temperature of the double dipping and double rolling is 78°C, the pre-baking time is 2.5min, the baking temperature is 110°C, the baking time is 4min, and the rolling rate is 75% to obtain a stain-resistant and wrinkle-resistant ultrafine polyester fiber fabric; The method for preparing the Cassia seed extract solution in S3 comprises the following steps: S11. The Cassia seed powder having a particle size of 45 mesh was added to a 90% volume fraction of an ethanol solution, and the solid-liquid ratio of the Cassia seed powder to the ethanol solution was 1:9 to obtain a suspension; S12. The suspension was heated in a water bath at 80°C for 2 h and refluxed for 4 times to obtain an extract; S13. The extract obtained in S12 is subjected to reduced pressure distillation at a pressure of 12 kPa and a temperature of 50° C. to obtain a Cassia seed extract solution. Example 7 A stain-resistant and wrinkle-resistant ultrafine polyester fiber fabric and a preparation method thereof, the preparation method comprising the following steps: S1. The polyester chips were dissolved in a trifluoroacetic acid / dichloromethane solution, wherein the volume ratio of trifluoroacetic acid to dichloromethane was 8:1, to obtain a solution A having a mass fraction of 14 wt %; S2. A 0.5 mol / L copper nitrate solution was added to solution A to obtain solution B, wherein the volume ratio of solution A to solution B was 1:0.4, and solution B was used for electrostatic spinning to obtain polyester / copper nitrate fiber yarn, wherein the positive and negative voltages of the electrostatic spinning were 25 kV, the spinning rate was 0.4 mL / min, the speed of the collecting roller was 0.4 r / min, the receiving distance was 18 cm, the speed of the twister was 120 r / min, and then a polyester / copper nitrate fabric with a warp density of 170 strands / 10 cm and a weft density of 100 strands / 10 cm was obtained by weaving; S3. The polyester / copper nitrate fabric is immersed in a 0.8 mol / L Cassia seed extract solution, wherein the weight ratio of the Cassia seed extract solution to the polyester / copper nitrate fabric is 20:1, and after drying at 65°C for 80 min, the polyester / copper nitrate fabric is immersed in a potassium hydroxide solution at a pH of 10 to obtain a polyester fabric with liquid containing copper, wherein the liquid rate of the polyester / copper nitrate fabric is 100%; S4. The polyester fabric with liquid copper-containing element was immersed in a 3,4-epoxycyclohexyl methacrylate / ethanol solution with a concentration of 38g / L, and then double-dipped and double-rolled. The weight ratio of the 3,4-epoxycyclohexyl methacrylate / ethanol solution to the polyester fabric with liquid copper-containing element was 30:1. The pre-baking temperature of the double-dip and double-rolling was 78°C, the pre-baking time was 3min, the baking temperature was 110°C, the baking time was 4min, and the rolling rate was 78% to obtain a stain-resistant and wrinkle-resistant ultrafine polyester fiber fabric; The method for preparing the Cassia seed extract solution in S3 comprises the following steps: S11. The Cassia seed powder having a particle size of 35 mesh was added to a 70% volume fraction of an ethanol solution, and the solid-liquid ratio of the Cassia seed powder to the ethanol solution was 1:8 to obtain a suspension; S12. The suspension was heated in a water bath at 80°C for 2 h and refluxed for 3 times to obtain an extract; S13. The extract obtained in S12 was subjected to vacuum distillation at a pressure of 15 kPa and a temperature of 50 ° C to obtain a Cassia seed extract solution. Example 8 A stain-resistant and wrinkle-resistant ultrafine polyester fiber fabric and a preparation method thereof, the preparation method comprising the following steps: S1. The polyester chips were dissolved in a trifluoroacetic acid / dichloromethane solution, wherein the volume ratio of trifluoroacetic acid to dichloromethane was 8:1, to obtain a solution A having a mass fraction of 15 wt %; S2. A 0.4 mol / L copper nitrate solution is added to solution A to obtain solution B, wherein the volume ratio of solution A to solution B is 1:0.4, and solution B is used for electrostatic spinning to obtain polyester / copper nitrate fiber yarn, wherein the positive and negative electrode voltages of the electrostatic spinning are 25 kV, the spinning rate is 0.4 mL / min, the speed of the collecting roller is 0.4 r / min, the receiving distance is 20 cm, the speed of the twister is 120 r / min, and then a polyester / copper nitrate fabric with a warp density of 170 strands / 10 cm and a weft density of 100 strands / 10 cm is obtained by weaving; S3. The polyester / copper nitrate fabric is immersed in a 0.8 mol / L Cassia seed extract solution, wherein the weight ratio of the Cassia seed extract solution to the polyester / copper nitrate fabric is 20:1, and after drying at 60°C for 95 min, the polyester / copper nitrate fabric is immersed in a potassium hydroxide solution at a pH of 9 to obtain a polyester fabric with liquid containing copper, wherein the liquid rate of the polyester / copper nitrate fabric with liquid is 90%; S4. The polyester fabric with liquid copper-containing element was immersed in a 30g / L 3,4-epoxycyclohexyl methacrylate / ethanol solution for double dipping and double rolling, wherein the weight ratio of the 3,4-epoxycyclohexyl methacrylate / ethanol solution to the polyester fabric with liquid copper-containing element was 30:1, the pre-baking temperature of the double dipping and double rolling was 78°C, the pre-baking time was 3min, the baking temperature was 110°C, the baking time was 5min, and the rolling rate was 78% to obtain a stain-resistant and wrinkle-resistant ultrafine polyester fiber fabric; The method for preparing the Cassia seed extract solution in S3 comprises the following steps: S11. The Cassia seed powder having a particle size of 35 mesh was added to a 70% volume fraction of an ethanol solution, and the solid-liquid ratio of the Cassia seed powder to the ethanol solution was 1:8 to obtain a suspension; S12. The suspension was heated to reflux at 80°C in a water bath for 2.3 h, and the process was repeated 4 times to obtain an extract; S13. The extract obtained in S12 is subjected to reduced pressure distillation at a pressure of 15 kPa and a temperature of 45° C. to obtain a Cassia seed extract solution. Example 9 A stain-resistant and wrinkle-resistant ultrafine polyester fiber fabric and a preparation method thereof, the preparation method comprising the following steps: S1. The polyester chips were dissolved in a trifluoroacetic acid / dichloromethane solution, wherein the volume ratio of trifluoroacetic acid to dichloromethane was 8:1, to obtain a solution A having a mass fraction of 16 wt %; S2. A copper nitrate solution with a concentration of 0.4 mol / L is added to solution A to obtain solution B, wherein the volume ratio of solution A to solution B is 1:0.4, and solution B is used for electrostatic spinning to obtain polyester / copper nitrate fiber yarn, wherein the positive and negative electrode voltages of the electrostatic spinning are 20 kV, the spinning rate is 0.4 mL / min, the speed of the collecting roller is 0.4 r / min, the receiving distance is 20 cm, the speed of the twister is 120 r / min, and then a polyester / copper nitrate fabric with a warp density of 175 strands / 10 cm and a weft density of 110 strands / 10 cm is obtained by weaving; S3. The polyester / copper nitrate fabric is immersed in a 0.8 mol / L Cassia seed extract solution, wherein the weight ratio of the Cassia seed extract solution to the polyester / copper nitrate fabric is 20:1, and after drying at 60°C for 95 min, the polyester / copper nitrate fabric is immersed in a potassium hydroxide solution at a pH of 9 to obtain a polyester fabric with liquid containing copper, wherein the liquid rate of the polyester / copper nitrate fabric with liquid is 90%; S4. The polyester fabric with liquid copper-containing element is immersed in a 3,4-epoxycyclohexyl methacrylate / ethanol solution with a concentration of 40g / L, and then double-dipped and double-rolled. The weight ratio of the 3,4-epoxycyclohexyl methacrylate / ethanol solution to the polyester fabric with liquid copper-containing element is 35:1. The pre-baking temperature of the double-dip and double-rolling is 78°C, the pre-baking time is 3min, the baking temperature is 110°C, the baking time is 5min, and the rolling rate is 78% to obtain a stain-resistant and wrinkle-resistant ultrafine polyester fiber fabric; The method for preparing the Cassia seed extract solution in S3 comprises the following steps: S11. The Cassia seed powder having a particle size of 40 mesh was added to a 70% volume fraction of an ethanol solution, and the solid-liquid ratio of the Cassia seed powder to the ethanol solution was 1:10 to obtain a suspension; S12. The suspension was heated to reflux at 80°C in a water bath for 2.3 h, and the process was repeated 4 times to obtain an extract; S13. The extract obtained in S12 is subjected to reduced pressure distillation at a pressure of 15 kPa and a temperature of 45° C. to obtain a Cassia seed extract solution. Comparative Example 1 The difference between this comparative example and Examples 1, 2 and 3 is that the copper ions in the fiber are not reduced to copper element. Table 1 Effect of two-dimensional copper network on antifouling and anti-wrinkle properties of fabrics name Does it contain copper element network? Water contact angle / ° Wrinkle recovery angle / ° Example 1 yes 176.5 232.6 Example 2 yes 178.1 229.8 Example 3 yes 172.6 225.4 Comparative Example 1 no 150.8 164.3 Comparative Example 2 The difference between this comparative example and Examples 4, 5 and 6 is that no 3,4-epoxycyclohexyl methacrylate solution is added in the double dipping and double padding process. Table 23, the effect of the presence of 4-epoxycyclohexyl methacrylate on the anti-fouling and anti-wrinkle properties of fabrics name Does it contain copper element network? Water contact angle / ° Wrinkle recovery angle / ° Example 4 yes 169.8 225.7 Example 5 yes 170.4 237.1 Example 6 yes 173.3 234.8 Comparative Example 2 no 147.6 150.5 Comparative Example 3 The difference between this comparative example and Examples 5 and 6 is that the fabric is not subjected to alkali treatment. Table 3 Effect of alkali treatment on antifouling and anti-wrinkle properties of fabrics name Whether to carry out alkali treatment Water contact angle / ° Wrinkle recovery angle / ° Example 7 yes 177.2 238.2 Example 8 yes 168.8 229.1 Example 9 yes 175.1 240.5 Comparative Example 3 no 130.5 152.1 Note: 1. Contact angle test reference standard "ASTM D5946-09"; 2. Wrinkle recovery angle test reference standard "GB / T 29257-2012". Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A stain-resistant and wrinkle-resistant ultrafine polyester fiber fabric and a preparation method thereof, characterized in that: The preparation method comprises the following steps: S1. The polyester chips were dissolved in trifluoroacetic acid / dichloromethane solution to obtain solution A; S2. adding the copper nitrate solution to the solution A to obtain the solution B, electrospinning the solution B to obtain the polyester / copper nitrate fiber yarn, and then weaving to obtain the polyester / copper nitrate fabric; S3. The polyester / copper nitrate fabric is immersed in the Cassia seed extract solution, and after drying, the polyester / copper nitrate fabric is immersed in an alkaline solution to obtain a polyester fabric containing copper in a liquid; S4. The polyester fabric with liquid copper-containing element is immersed in 3,4-epoxycyclohexyl methacrylate / ethanol solution and then double-dipped and double-rolled to obtain anti-fouling and anti-wrinkle ultrafine polyester fiber fabric.

2. The anti-fouling and anti-wrinkle ultrafine polyester fiber fabric and the preparation method thereof according to claim 1, characterized in that: The volume ratio of trifluoroacetic acid to dichloromethane in S1 is 6-10:1, and the mass fraction of solution A is 8-16 wt %.

3. The anti-fouling and anti-wrinkle ultrafine polyester fiber fabric and the preparation method thereof according to claim 1, characterized in that: The concentration of the copper nitrate solution in S2 is 0.4-0.6 mol / L, and the volume ratio of solution A to solution B is 1:0.1-0.

4.

4. The anti-fouling and anti-wrinkle ultrafine polyester fiber fabric and the preparation method thereof according to claim 1, characterized in that: The positive and negative voltages of the electrostatic spinning in S2 are 15-25 kV, the spinning rate is 0.1-0.5 mL / min, the rotation speed of the collecting roller is 0.2-0.5 r / min, the receiving distance is 15-20 cm, the twister rotation speed is 90-120 r / min, and the warp density of the polyester / copper nitrate fabric is 140-180 strands / 10 cm, and the weft density is 100-110 strands / 10 cm.

5. The anti-fouling and anti-wrinkle ultrafine polyester fiber fabric and the preparation method thereof according to claim 1, characterized in that: The method for preparing the Cassia seed extract solution in S3 comprises the following steps: S11. The Cassia seed powder having a particle size of 30 to 50 mesh is added to a volume fraction of 50 to 90% ethanol solution, the solid-liquid ratio of the Cassia seed powder to the ethanol solution is 1:8 to 10 to obtain a suspension; S12. The suspension was heated to reflux at 70-85°C in a water bath for 1.5-2.5h, and the mixture was repeated 2-4 times to obtain an extract; S13. Concentrate the extract obtained in S12 to obtain a Cassia seed extract solution.

6. The antifouling and anti-wrinkle ultrafine polyester fiber fabric and the preparation method thereof according to claim 5, characterized in that: The concentration method in S13 is vacuum distillation, the pressure of the vacuum distillation is 10-15 kPa, and the temperature is 45-55°C.

7. The anti-fouling and anti-wrinkle ultrafine polyester fiber fabric and the preparation method thereof according to claim 1, characterized in that: The concentration of the cassia seed extract solution in S3 is 0.8-1.5 mol / L, the weight ratio of the cassia seed extract solution to the polyester / copper nitrate fabric is 20-40:1, the drying temperature is 60-80°C, and the drying time is 60-100 min.

8. The anti-fouling and anti-wrinkle ultrafine polyester fiber fabric and the preparation method thereof according to claim 1, characterized in that: The pH of the alkaline solution in S3 is 8-10, the alkaline solution is one or both of sodium hydroxide solution and potassium hydroxide solution, and the liquid-carrying rate of the liquid-carrying polyester / copper nitrate fabric is 70-100%.

9. The anti-fouling and anti-wrinkle ultrafine polyester fiber fabric and the preparation method thereof according to claim 1, characterized in that: The concentration of the 3,4-epoxycyclohexyl methacrylate / ethanol solution in S4 is 25-40 g / L, and the weight ratio of the 3,4-epoxycyclohexyl methacrylate / ethanol solution to the copper-containing polyester fabric is 30-45:

1.

10. The anti-fouling and anti-wrinkle ultrafine polyester fiber fabric and the preparation method thereof according to claim 1, characterized in that: The pre-baking temperature of the double dipping and double rolling in S4 is 70-80° C., the pre-baking time is 2-3 min, the baking temperature is 100-130° C., the baking time is 3-5 min, and the rolling rate is 75-80%.