Anti-fouling and anti-wrinkle ultrafine polyester fiber fabric and preparation method thereof

Abstract

The present invention provides a stain-resistant and wrinkle-resistant ultrafine 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 solution A; S2. adding a copper nitrate solution to solution A to obtain solution B, electrospinning solution B to obtain polyester / copper nitrate fiber yarn, and then weaving polyester / copper nitrate fabric; S3. immersing the polyester / copper nitrate fabric in a cassia seed extract solution, drying the polyester / copper nitrate fabric, and immersing the polyester / copper nitrate fabric in an alkaline solution to obtain a polyester fabric containing a liquid containing copper; S4. immersing the polyester fabric containing a liquid containing copper in a 3,4-epoxycyclohexyl methacrylate / ethanol solution, performing two dipping and two rolling steps to obtain the stain-resistant and wrinkle-resistant ultrafine polyester fiber fabric. The fabric obtained by the present invention has good stain-resistant and wrinkle-resistant properties.

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 advancements, 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 the surface of polyester fabrics with an anti-fouling layer, its anti-fouling ability can be significantly improved. However, the coating obtained by simple surface coating has the risk of easy peeling and shedding, so it is very necessary to develop textile fabrics with anti-fouling and anti-wrinkle ultrafine polyester fiber 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 element network and a lotus leaf-like structure on the surface of the fabric to achieve the stain-resistant and wrinkle-resistant properties of the fabric.

[0004] Technical solution:

[0005] A stain-resistant and wrinkle-resistant ultrafine polyester fiber fabric and a preparation method thereof, the preparation method comprising the following steps:

[0006] S1. The polyester chips were dissolved in trifluoroacetic acid / dichloromethane solution to obtain solution A;

[0007] S2. adding copper nitrate solution to solution A to obtain solution B, electrospinning solution B to obtain polyester / copper nitrate fiber yarn, and then weaving to obtain polyester / copper nitrate fabric;

[0008] S3. The polyester / copper nitrate fabric was immersed in a Cassia seed extract solution, and after drying, the polyester / copper nitrate fabric was immersed in an alkaline solution to obtain a polyester fabric containing a single substance containing copper in a liquid;

[0009] S4. The polyester fabric with liquid copper is immersed in a 3,4-epoxycyclohexyl methacrylate / ethanol solution and then double-dipped and double-rolled to obtain a stain-resistant and wrinkle-resistant ultrafine polyester fiber fabric.

[0010] 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 %.

[0011] 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.

[0012] Preferably, the positive and negative voltages of the electrospinning 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.

[0013] Preferably, the method for preparing the Cassia seed extract solution in S3 comprises the following steps:

[0014] S11. The particle size of 30 to 50 mesh Cassia powder was added to a volume fraction of 50 to 90% ethanol solution, the solid-liquid ratio of Cassia powder to ethanol solution was 1: 8 to 10 to obtain a suspension;

[0015] S12. The suspension was heated under reflux at 70-85°C in a water bath for 1.5-2.5 h, and repeated 2-4 times to obtain an extract;

[0016] S13. Concentrate the extract obtained in S12 to obtain a Cassia seed extract solution.

[0017] 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.

[0018] 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.

[0019] Preferably, 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%.

[0020] 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.

[0021] Preferably, the pre-baking temperature of the double dipping and double padding 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 liquid rolling rate is 75-80%.

[0022] Beneficial effects: The present invention has the following advantages:

[0023] 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 the Cassia seed extract solution, thereby enhancing the intermolecular force and restricting the mutual movement between macromolecular chains, forming multiple support 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, which are solidified to form a thin film structure on the surface of the fabric. The alkali treatment causes the surface of the fabric to present an irregular groove structure while also partially exposing the copper element, forming a unique micro-nano structure on the surface of the fabric similar to the surface of a lotus leaf, which greatly reduces the contact area between the surface of the fabric and the stain, forming an extremely thin air layer, so that the surface of the fabric exhibits superhydrophobic properties, thereby giving the fabric anti-fouling and anti-wrinkle properties. DETAILED DESCRIPTION

[0024] The present invention will be further described below in conjunction with examples, which are provided to explain the present invention and are not limited to the following examples:

[0025] Example 1

[0026] A stain-resistant and wrinkle-resistant ultrafine polyester fiber fabric and a preparation method thereof, the preparation method comprising the following steps:

[0027] S1. The polyester chips were dissolved in a trifluoroacetic acid / dichloromethane solution, with a volume ratio of trifluoroacetic acid to dichloromethane of 6:1 to obtain a solution A having a mass fraction of 8 wt %;

[0028] S2. A 0.4 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 1:0.1. Solution B was used for electrospinning to obtain polyester / copper nitrate fiber yarn. The positive and negative voltages of the electrospinning were 15 kV, the spinning rate was 0.1 mL / min, the speed of the collecting roller was 0.2 r / min, the receiving distance was 15 cm, and the speed of the twister was 90 r / min. The yarn was then woven to obtain a polyester / copper nitrate fabric with a warp density of 140 strands / 10 cm and a weft density of 100 strands / 10 cm.

[0029] S3. The polyester / copper nitrate fabric was 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 was 20:1. After drying at 60°C for 60 min, the polyester / copper nitrate fabric was 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 polyester / copper nitrate fabric was 70%;

[0030] S4. The polyester fabric with a copper-containing liquid was immersed in a 25 g / L 3,4-epoxycyclohexyl methacrylate / ethanol solution for two dips and two rolls. The weight ratio of the 3,4-epoxycyclohexyl methacrylate / ethanol solution to the polyester fabric with a copper-containing liquid was 30: 1. The pre-baking temperature of the two dips and two rolls was 70 ° C, the pre-baking time was 2 min, the baking temperature was 100 ° C, the baking time was 3 min, and the rolling rate was 75% to obtain a stain-resistant and wrinkle-resistant ultrafine polyester fiber fabric.

[0031] The preparation method of the Cassia seed extract solution in S3 comprises the following steps:

[0032] S11. Cassia seed powder having a particle size of 30 mesh was added to a volume fraction of 50% ethanol solution, the solid-liquid ratio of Cassia seed powder to ethanol solution was 1:8 to obtain a suspension;

[0033] S12. The suspension was heated in a water bath at 70°C for 1.5 h and refluxed twice to obtain an extract;

[0034] 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.

[0035] Example 2

[0036] A stain-resistant and wrinkle-resistant ultrafine polyester fiber fabric and a preparation method thereof, the preparation method comprising the following steps:

[0037] S1. The polyester chips were dissolved in a trifluoroacetic acid / dichloromethane solution, with a volume ratio of trifluoroacetic acid to dichloromethane of 10:1 to obtain a solution A having a mass fraction of 16 wt %;

[0038] S2. A 0.6 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. Solution B was used for electrospinning to obtain polyester / copper nitrate fiber yarn. The positive and negative voltages of the electrospinning were 25 kV, the spinning rate was 0.5 mL / min, the speed of the collecting roller was 0.5 r / min, the receiving distance was 20 cm, and the speed of the twister was 120 r / min. The yarn was then woven to obtain a polyester / copper nitrate fabric with a warp density of 180 strands / 10 cm and a weft density of 110 strands / 10 cm.

[0039] S3. The polyester / copper nitrate fabric was 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 was 40:1. After drying at 80°C for 100 min, the polyester / copper nitrate fabric was immersed in a potassium hydroxide solution at a pH of 10 to obtain a polyester fabric with a liquid containing copper, wherein the liquid rate of the polyester / copper nitrate fabric was 100%;

[0040] S4. The polyester fabric with a copper-containing liquid was immersed in a 40 g / L 3,4-epoxycyclohexyl methacrylate / ethanol solution for two dips and two rolls. The weight ratio of the 3,4-epoxycyclohexyl methacrylate / ethanol solution to the copper-containing polyester fabric with a liquid was 45: 1. The pre-baking temperature of the two dips and two rolls was 80 ° C, the pre-baking time was 3 min, the baking temperature was 130 ° C, the baking time was 5 min, and the rolling rate was 80% to obtain a stain-resistant and wrinkle-resistant ultrafine polyester fiber fabric.

[0041] The preparation method of the Cassia seed extract solution in S3 comprises the following steps:

[0042] S11. Cassia seed powder having a particle size of 50 mesh was added to a volume fraction of 90% ethanol solution, the solid-liquid ratio of Cassia seed powder to ethanol solution was 1:10 to obtain a suspension;

[0043] S12. The suspension was heated to reflux in a water bath at 85°C for 2.5 h, and repeated 4 times to obtain an extract;

[0044] 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.

[0045] Example 3

[0046] A stain-resistant and wrinkle-resistant ultrafine polyester fiber fabric and a preparation method thereof, the preparation method comprising the following steps:

[0047] S1. The polyester chips were dissolved in a trifluoroacetic acid / dichloromethane solution, the volume ratio of trifluoroacetic acid to dichloromethane being 8:1, to obtain a solution A having a mass fraction of 10 wt %;

[0048] 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. Solution B was used for electrospinning to obtain polyester / copper nitrate fiber yarn. The positive and negative voltages of the electrospinning were 18 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, and the speed of the twister was 100 r / min. The yarn was then woven to obtain a polyester / copper nitrate fabric with a warp density of 150 strands / 10 cm and a weft density of 105 strands / 10 cm.

[0049] S3. The polyester / copper nitrate fabric was 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 was 25:1. After drying at 60°C for 70 min, the polyester / copper nitrate fabric was immersed in a sodium hydroxide solution at a pH of 9 to obtain a polyester fabric with a liquid containing copper, and the liquid rate of the polyester / copper nitrate fabric was 80%;

[0050] S4. The polyester fabric with a copper-containing liquid was immersed in a 30 g / L 3,4-epoxycyclohexyl methacrylate / ethanol solution for two dips and two rolls. The weight ratio of the 3,4-epoxycyclohexyl methacrylate / ethanol solution to the copper-containing polyester fabric with a liquid was 35: 1. The pre-baking temperature of the two dips and two rolls was 70 ° C, the pre-baking time was 3 min, the baking temperature was 110 ° C, the baking time was 4 min, and the liquid rolling rate was 80% to obtain a stain-resistant and wrinkle-resistant ultrafine polyester fiber fabric.

[0051] The preparation method of the Cassia seed extract solution in S3 comprises the following steps:

[0052] S11. Cassia seed powder having a particle size of 35 mesh was added to a volume fraction of 60% ethanol solution, the solid-liquid ratio of Cassia seed powder to ethanol solution was 1:9 to obtain a suspension;

[0053] S12. The suspension was heated under reflux at 75°C in a water bath for 2 h, and repeated 4 times to obtain an extract;

[0054] 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.

[0055] Example 4

[0056] A stain-resistant and wrinkle-resistant ultrafine polyester fiber fabric and a preparation method thereof, the preparation method comprising the following steps:

[0057] S1. The polyester chips were dissolved in a trifluoroacetic acid / dichloromethane solution, wherein the volume ratio of trifluoroacetic acid to dichloromethane was 6 to 10:1 to obtain a solution A having a mass fraction of 12 wt %;

[0058] 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. Solution B was used for electrospinning to obtain polyester / copper nitrate fiber yarn. The positive and negative voltages of the electrospinning were 22 kV, the spinning rate was 0.4 mL / min, the speed of the collecting roller was 0.2 r / min, the receiving distance was 15 cm, and the speed of the twister was 100 r / min. Subsequently, the polyester / copper nitrate fabric with a warp density of 160 yarns / 10 cm and a weft density of 100 yarns / 10 cm was obtained by weaving.

[0059] S3. The polyester / copper nitrate fabric was 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 was 25:1. After drying at 60°C for 60 min, the polyester / copper nitrate fabric was 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 polyester / copper nitrate fabric was 75%;

[0060] S4. The polyester fabric with a copper-containing liquid was immersed in a 30 g / L 3,4-epoxycyclohexyl methacrylate / ethanol solution for two dips and two rolls. The weight ratio of the 3,4-epoxycyclohexyl methacrylate / ethanol solution to the polyester fabric with a copper-containing liquid was 40: 1. The pre-baking temperature of the two dips and two rolls was 70 ° C, the pre-baking time was 2 min, the baking temperature was 100 ° C, the baking time was 5 min, and the rolling rate was 75% to obtain a stain-resistant and wrinkle-resistant ultrafine polyester fiber fabric.

[0061] The preparation method of the Cassia seed extract solution in S3 comprises the following steps:

[0062] S11. Cassia seed powder having a particle size of 45 mesh was added to a volume fraction of 60% ethanol solution, the solid-liquid ratio of Cassia seed powder to ethanol solution was 1:8 to obtain a suspension;

[0063] S12. The suspension was heated under reflux at 75°C in a water bath for 2.5 h, and repeated four times to obtain an extract;

[0064] S13. The extract obtained in S12 is subjected to vacuum distillation at a pressure of 14 kPa and a temperature of 55° C. to obtain a Cassia seed extract solution.

[0065] Example 5

[0066] A stain-resistant and wrinkle-resistant ultrafine polyester fiber fabric and a preparation method thereof, the preparation method comprising the following steps:

[0067] S1. The polyester chips were dissolved in a trifluoroacetic acid / dichloromethane solution, wherein the volume ratio of trifluoroacetic acid to dichloromethane was 6 to 10:1 to obtain a solution A having a mass fraction of 14 wt %;

[0068] 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. Solution B was used for electrospinning to obtain polyester / copper nitrate fiber yarn. The positive and negative voltages of the electrospinning 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, and the speed of the twister was 110 r / min. The yarn was then woven to obtain a polyester / copper nitrate fabric with a warp density of 140 strands / 10 cm and a weft density of 100 strands / 10 cm.

[0069] S3. The polyester / copper nitrate fabric was 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 was 25:1, and the polyester / copper nitrate fabric was dried at 75°C for 90 min, and then immersed in an alkaline solution at a pH of 10 to obtain a polyester fabric containing copper with liquid, wherein the alkaline solution was one or both of a sodium hydroxide solution and a potassium hydroxide solution, and the liquid rate of the polyester / copper nitrate fabric was 70-100%;

[0070] S4. The polyester fabric with a copper-containing liquid was immersed in a 30 g / L 3,4-epoxycyclohexyl methacrylate / ethanol solution for two dips and two rolls. The weight ratio of the 3,4-epoxycyclohexyl methacrylate / ethanol solution to the polyester fabric with a copper-containing liquid was 38: 1. The pre-baking temperature of the two dips and two rolls was 75 ° C, the pre-baking time was 2 min, the baking temperature was 110 ° C, the baking time was 4 min, and the liquid rolling rate was 75% to obtain a stain-resistant and wrinkle-resistant ultrafine polyester fiber fabric;

[0071] The preparation method of the Cassia seed extract solution in S3 comprises the following steps:

[0072] S11. 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 Cassia seed powder to ethanol solution was 1:8 to obtain a suspension;

[0073] S12. The suspension was heated under reflux at 75°C in a water bath for 2 h, and repeated 4 times to obtain an extract;

[0074] 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.

[0075] Example 6

[0076] A stain-resistant and wrinkle-resistant ultrafine polyester fiber fabric and a preparation method thereof, the preparation method comprising the following steps:

[0077] S1. The polyester chips were dissolved in a trifluoroacetic acid / dichloromethane solution, with a volume ratio of trifluoroacetic acid to dichloromethane of 8:1 to obtain a solution A having a mass fraction of 14 wt %;

[0078] 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. Solution B was used for electrospinning to obtain polyester / copper nitrate fiber yarn. The positive and negative voltages of the electrospinning 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, and the speed of the twister was 120 r / min. The yarn was then woven to obtain a polyester / copper nitrate fabric with a warp density of 160 strands / 10 cm and a weft density of 100 strands / 10 cm.

[0079] S3. The polyester / copper nitrate fabric was 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 was 20:1, and the polyester / copper nitrate fabric was dried at 65°C for 80 min. After that, the polyester / copper nitrate fabric was immersed in a potassium hydroxide solution at a pH of 8 to obtain a polyester fabric with a liquid containing elemental copper. The liquid rate of the polyester / copper nitrate fabric was 95%;

[0080] S4. The polyester fabric with a copper-containing liquid was immersed in a 35 g / L 3,4-epoxycyclohexyl methacrylate / ethanol solution for two dips and two rolls. The weight ratio of the 3,4-epoxycyclohexyl methacrylate / ethanol solution to the polyester fabric with a copper-containing liquid was 30: 1. The pre-baking temperature of the two dips and two rolls was 78 ° C, the pre-baking time was 2.5 min, the baking temperature was 110 ° C, the baking time was 4 min, and the liquid rolling rate was 75% to obtain a stain-resistant and wrinkle-resistant ultrafine polyester fiber fabric.

[0081] The preparation method of the Cassia seed extract solution in S3 comprises the following steps:

[0082] S11. 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 Cassia seed powder to the ethanol solution was 1:9 to obtain a suspension;

[0083] S12. The suspension was heated in a water bath at 80°C for 2 h and refluxed for 4 times to obtain an extract;

[0084] 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.

[0085] Example 7

[0086] A stain-resistant and wrinkle-resistant ultrafine polyester fiber fabric and a preparation method thereof, the preparation method comprising the following steps:

[0087] S1. The polyester chips were dissolved in a trifluoroacetic acid / dichloromethane solution, with a volume ratio of trifluoroacetic acid to dichloromethane of 8:1 to obtain a solution A having a mass fraction of 14 wt %;

[0088] 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. Solution B was used for electrospinning to obtain polyester / copper nitrate fiber yarn. The positive and negative voltages of the electrospinning 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, and the speed of the twister was 120 r / min. The yarn was then woven to obtain a polyester / copper nitrate fabric with a warp density of 170 strands / 10 cm and a weft density of 100 strands / 10 cm.

[0089] S3. The polyester / copper nitrate fabric was 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 was 20:1, and the polyester / copper nitrate fabric was dried at 65°C for 80 min. After that, the polyester / copper nitrate fabric was immersed in a potassium hydroxide solution at a pH of 10 to obtain a polyester fabric with a liquid containing copper, wherein the liquid rate of the polyester / copper nitrate fabric was 100%;

[0090] S4. The polyester fabric with a copper-containing liquid was immersed in a 3,4-epoxycyclohexyl methacrylate / ethanol solution at a concentration of 38 g / L and then double-dipped and double-rolled. The weight ratio of the 3,4-epoxycyclohexyl methacrylate / ethanol solution to the copper-containing polyester fabric with a liquid was 30:1. The pre-dip and double-rolling temperature was 78 ° C, the pre-drying time was 3 min, the baking temperature was 110 ° C, the baking time was 4 min, and the rolling rate was 78% to obtain a stain-resistant and wrinkle-resistant ultrafine polyester fiber fabric.

[0091] The preparation method of the Cassia seed extract solution in S3 comprises the following steps:

[0092] S11. Cassia seed powder having a particle size of 35 mesh was added to a volume fraction of 70% ethanol solution, and the solid-liquid ratio of Cassia seed powder to ethanol solution was 1:8 to obtain a suspension;

[0093] S12. The suspension was heated under reflux at 80°C in a water bath for 2 h, and repeated three times to obtain an extract;

[0094] 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.

[0095] Example 8

[0096] A stain-resistant and wrinkle-resistant ultrafine polyester fiber fabric and a preparation method thereof, the preparation method comprising the following steps:

[0097] S1. The polyester chips were dissolved in a trifluoroacetic acid / dichloromethane solution, with a volume ratio of trifluoroacetic acid to dichloromethane of 8:1 to obtain a solution A having a mass fraction of 15 wt %;

[0098] S2. A 0.4 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. Solution B was used for electrospinning to obtain polyester / copper nitrate fiber yarn. The positive and negative voltages of the electrospinning 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 20 cm, and the speed of the twister was 120 r / min. Subsequently, the 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.

[0099] S3. The polyester / copper nitrate fabric was 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 was 20:1, and the polyester / copper nitrate fabric was dried at 60°C for 95 min. After that, the polyester / copper nitrate fabric was immersed in a potassium hydroxide solution at a pH of 9 to obtain a polyester fabric with a liquid containing elemental copper. The liquid rate of the polyester / copper nitrate fabric was 90%;

[0100] S4. The polyester fabric with a copper-containing liquid was immersed in a 30 g / L 3,4-epoxycyclohexyl methacrylate / ethanol solution for two dips and two rolls. The weight ratio of the 3,4-epoxycyclohexyl methacrylate / ethanol solution to the polyester fabric with a copper-containing liquid was 30: 1. The pre-baking temperature of the two dips and two rolls was 78 ° C, the pre-baking time was 3 min, the baking temperature was 110 ° C, the baking time was 5 min, and the liquid rolling rate was 78% to obtain a stain-resistant and wrinkle-resistant ultrafine polyester fiber fabric.

[0101] The preparation method of the Cassia seed extract solution in S3 comprises the following steps:

[0102] S11. Cassia seed powder having a particle size of 35 mesh was added to a volume fraction of 70% ethanol solution, and the solid-liquid ratio of Cassia seed powder to ethanol solution was 1:8 to obtain a suspension;

[0103] S12. The suspension was heated to reflux in a water bath at 80°C for 2.3 h, and repeated four times to obtain an extract;

[0104] 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.

[0105] Example 9

[0106] A stain-resistant and wrinkle-resistant ultrafine polyester fiber fabric and a preparation method thereof, the preparation method comprising the following steps:

[0107] S1. The polyester chips were dissolved in a trifluoroacetic acid / dichloromethane solution, with a volume ratio of trifluoroacetic acid to dichloromethane of 8:1 to obtain a solution A having a mass fraction of 16 wt %;

[0108] S2. A 0.4 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. Solution B was used for electrospinning to obtain polyester / copper nitrate fiber yarn. The positive and negative voltages of the electrospinning were 20 kV, the spinning rate was 0.4 mL / min, the speed of the collecting roller was 0.4 r / min, the receiving distance was 20 cm, and the speed of the twister was 120 r / min. The yarn was then woven to obtain a polyester / copper nitrate fabric with a warp density of 175 strands / 10 cm and a weft density of 110 strands / 10 cm.

[0109] S3. The polyester / copper nitrate fabric was 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 was 20:1, and the polyester / copper nitrate fabric was dried at 60°C for 95 min. After that, the polyester / copper nitrate fabric was immersed in a potassium hydroxide solution at a pH of 9 to obtain a polyester fabric with a liquid containing elemental copper. The liquid rate of the polyester / copper nitrate fabric was 90%;

[0110] S4. The polyester fabric with a copper-containing liquid was immersed in a 3,4-epoxycyclohexyl methacrylate / ethanol solution at a concentration of 40 g / L and then double-dipped and double-rolled. The weight ratio of the 3,4-epoxycyclohexyl methacrylate / ethanol solution to the copper-containing polyester fabric with a liquid was 35:1. The pre-dip and double-rolling temperature was 78 ° C, the pre-drying time was 3 min, the baking temperature was 110 ° C, the baking time was 5 min, and the rolling rate was 78% to obtain a stain-resistant and wrinkle-resistant ultrafine polyester fiber fabric.

[0111] The preparation method of the Cassia seed extract solution in S3 comprises the following steps:

[0112] S11. Cassia seed powder having a particle size of 40 mesh was added to a volume fraction of 70% ethanol solution, and the solid-liquid ratio of Cassia seed powder to ethanol solution was 1:10 to obtain a suspension;

[0113] S12. The suspension was heated to reflux in a water bath at 80°C for 2.3 h, and repeated four times to obtain an extract;

[0114] 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.

[0115] Comparative Example 1

[0116] The difference between this comparative example and Examples 1, 2 and 3 is that the copper ions in the fibers are not reduced to elemental copper.

[0117] Table 1 Effect of two-dimensional copper network on the anti-fouling and anti-wrinkle properties of fabrics

[0118] 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

[0119] Comparative Example 2

[0120] 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.

[0121] Table 2 Effect of the presence of 3,4-epoxycyclohexyl methacrylate on the antifouling and anti-wrinkle properties of fabrics

[0122] 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

[0123] Comparative Example 3

[0124] The difference between this comparative example and Examples 5 and 6 is that the fabric is not subjected to alkali treatment.

[0125] Table 3 Effect of alkali treatment on antifouling and anti-wrinkle properties of fabrics

[0126] name Whether alkali treatment is performed 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

[0127] Note:

[0128] 1. Contact angle test reference standard "ASTM D5946-09";

[0129] 2. Wrinkle recovery angle test reference standard "GB / T 29257-2012".

[0130] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

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

2. The method for preparing the antifouling and anti-wrinkle ultrafine polyester fiber fabric 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 method for preparing the antifouling and anti-wrinkle ultrafine polyester fiber fabric 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 method for preparing the antifouling and anti-wrinkle ultrafine polyester fiber fabric according to claim 1, characterized in that: The positive and negative electrode voltages of the electrospinning in S2 are 15~25kV, 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 15~20cm, the twister 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 method for preparing the antifouling and anti-wrinkle ultrafine polyester fiber fabric according to claim 1, characterized in that: The preparation method of the Cassia seed extract solution in S3 comprises the following steps: S11. The particle size of 30 to 50 mesh Cassia powder was added to a volume fraction of 50 to 90% ethanol solution, the solid-liquid ratio of Cassia powder to ethanol solution was 1: 8 to 10 to obtain a suspension; S12. Heat the suspension in a water bath at 70-85°C for 1.5-2.5 hours, repeating 2-4 times to obtain an extract; S13. Concentrate the extract obtained in S12 to obtain a Cassia seed extract solution.

6. The method for preparing the antifouling and anti-wrinkle ultrafine polyester fiber fabric according to claim 5, characterized in that: 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.

7. The method for preparing the antifouling and anti-wrinkle ultrafine polyester fiber fabric 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 method for preparing the antifouling and anti-wrinkle ultrafine polyester fiber fabric 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 copper-containing polyester fabric is 70-100%.

9. The method for preparing the antifouling and anti-wrinkle ultrafine polyester fiber fabric 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 method for preparing the antifouling and anti-wrinkle ultrafine polyester fiber fabric according to claim 1, characterized in that: The pre-baking temperature of the double dipping and double padding 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 liquid rolling rate is 75-80%.