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CN-121992528-A - Fluid fabric based on photocatalysis-kinetic energy cooperation and preparation method and application thereof

CN121992528ACN 121992528 ACN121992528 ACN 121992528ACN-121992528-A

Abstract

The invention relates to the technical field of functional fabrics, in particular to a fluid fabric based on photocatalysis-kinetic energy cooperation and a preparation method and application thereof. The invention prepares active fiber with polymer and nanometer material, and then prepares fluid fabric based on photocatalysis-kinetic energy synergy with the active fiber. The fluid fabric comprises a surface layer, a middle layer and an inner layer which are sequentially arranged, wherein at least one layer contains the active fiber, the middle layer is a supporting layer, and the surface layer and the inner layer are connected in an upright or inclined configuration to form a three-dimensional clearance space. The invention realizes the high-efficiency stable immobilization of the catalyst, avoids the loss and secondary pollution, strengthens the mass transfer and the light utilization of the constructed three-dimensional fabric structure, remarkably improves the pollutant degradation efficiency, has good catalytic activity, durability and engineering application prospect, and is suitable for high-efficiency photocatalytic sewage treatment.

Inventors

  • ZHENG WEIXING
  • Tu Juegen

Assignees

  • 易可纺新材料科技(苏州)有限公司

Dates

Publication Date
20260508
Application Date
20260121

Claims (10)

  1. 1. The active fiber is characterized by being made of a polymer and a nano material, wherein the mass content of the nano material in the active fiber is 1-5%, and the nano material comprises MXENE, g-C 3 N 4 and ZnO quantum dots.
  2. 2. The reactive fiber of claim 1, wherein said polymer is PET.
  3. 3. A method of preparing an active fiber according to any one of claims 1 to 2, comprising the steps of: (1) The polymer and the nano material are melted, blended, dispersed evenly and filtered to prepare core spinning solution, and the core spinning solution enters a spinning box A after metering; (2) Melting and filtering the soluble polymer to prepare a cortex spinning solution, and metering the cortex spinning solution into a spinning box B; (3) Spinning, namely spraying two melts into a fiber with a sheath-core structure through a composite spinning assembly, cooling, forming, oiling, and then winding, stretching, curling and shaping the fiber to obtain an active fiber with the sheath-core structure; (4) Removing the skin layer of the active fiber with the skin-core structure, so that the exposure rate of the core layer is more than or equal to 90 percent, and preparing the active fiber.
  4. 4. The method for preparing the active fiber according to claim 3, wherein the mass ratio of the sheath layer to the core layer of the active fiber with the sheath-core structure is 7:2-5.
  5. 5. A method of preparing an active fiber according to claim 3, wherein the dissolvable polymer is an alkali soluble polyester.
  6. 6. The process for producing an active fiber according to claim 3, wherein the spinning temperature in the step (3) is 265 to 285 ℃, the cooling wind speed is 1.0 to 1.5 m/s, the winding speed is 2400 to 2800 m/min, the drawing ratio of drawing is 1.5 to 3.0, the fiber crimp after crimping is not less than 25%, and the setting temperature is 210 to 240 ℃.
  7. 7. The method for preparing the active fiber according to claim 3, wherein the step (4) of removing the skin layer of the active fiber with the skin-core structure comprises the steps of immersing the fiber in an alkali solution at 95-120 ℃ for 15-45 min, washing and drying.
  8. 8. A fluid fabric based on photocatalysis-kinetic energy synergy, characterized in that the fabric comprises the active fiber of claim 1.
  9. 9. The fluid fabric based on photocatalysis-kinetic energy synergy according to claim 8, wherein the fluid fabric comprises a surface layer, a middle layer and a lining layer which are sequentially arranged, wherein at least one layer of the surface layer, the middle layer and the lining layer contains active fibers, the middle layer is a supporting layer, and the supporting layer is formed by connecting the surface layer and the lining layer in an upright or inclined configuration through yarns, so that a three-dimensional gap space is formed between the surface layer and the lining layer.
  10. 10. The photocatalytic-kinetic energy synergy based fluid fabric of claim 8, wherein the surface layer and the inner layer are of a plaited structure.

Description

Fluid fabric based on photocatalysis-kinetic energy cooperation and preparation method and application thereof Technical Field The invention relates to the technical field of functional fabrics, in particular to a fluid fabric based on photocatalysis-kinetic energy cooperation and a preparation method and application thereof. Background With the continuous development of industrialization, the wastewater discharged by the industries of chemical industry, printing and dyeing industry, pharmacy and the like contains a large amount of high-concentration organic pollutants which are difficult to biodegrade, and the conventional water treatment technology forms a serious challenge. Currently widely used physical adsorption, chemical oxidation and biological treatment methods have limitations in treating such wastewater. The physical method has the problems of limited adsorption capacity and difficult material regeneration, the chemical method usually needs to continuously add medicaments, the cost is high, additional chemical pollution can be generated, and the biological method is sensitive to toxic substances, has long treatment period and has insufficient operation stability. Therefore, development of efficient, stable, and environmentally friendly advanced treatment technologies is becoming an urgent industry need. Photocatalytic oxidation technology is considered as a potential solution, but still faces significant obstacles in practical engineering applications. On one hand, the high-activity nano catalyst is difficult to fix in a flowing water body, is easy to lose and inactivate and causes secondary pollution, and is difficult and heavy to recycle. On the other hand, the catalytic material has the inherent defects of limited light absorption range, high carrier recombination rate, easy poisoning or inactivation in complex sewage environment and the like. Meanwhile, the traditional reactor design is low in light energy utilization rate, insufficient in contact of reactants and a catalyst, and the overall treatment efficiency is far lower than theoretical expectation. These bottlenecks severely restrict the practical popularization and application of the photocatalysis technology in the field of industrial sewage treatment. Disclosure of Invention In order to solve the above problems, the present invention provides, in a first aspect, an active fiber made of a polymer, nanomaterial. Further, the mass content of the nano material in the active fiber is 1-5%. Further, the polymer is PET. Further, the nanomaterial includes MXENE (Ti 3C2TX）、g-C3N4, znO quantum dots. Further, the MXENE (Ti 3C2TX) has a sheet diameter of 2 to 5. Mu.m. Further, the preparation method of the active fiber comprises the following steps: (1) The polymer and the nano material are melted, blended, dispersed evenly and filtered to prepare core spinning solution, and the core spinning solution enters a spinning box A after metering; (2) Melting and filtering the soluble polymer to prepare a cortex spinning solution, and metering the cortex spinning solution into a spinning box B; (3) Spinning, namely spraying two melts into a fiber with a sheath-core structure through a composite spinning assembly, cooling, forming, oiling, and then winding, stretching, curling and shaping the fiber to obtain an active fiber with the sheath-core structure; (4) Removing the skin layer of the active fiber with the skin-core structure, so that the exposure rate of the core layer is more than or equal to 90 percent, and preparing the active fiber. Further, the mass of the nano material in the step (1) is 1-5% of the mass of the polymer. Further, the melting temperature in step (1) is 240-265 ℃. Further, the soluble polymer in step (2) is an alkali-soluble polyester. Further, in the step (2), the melting temperature is 160-190 ℃. Further, in the step (3), the spinning temperature is 265-285 ℃, the cooling air speed is 1.0-1.5 m/s, the winding speed is 2400-2800 m/min, the stretching drafting ratio is 1.5-3.0, the fiber crimping degree after crimping is more than or equal to 25%, and the shaping temperature is 210-240 ℃. Further, the fineness of the fiber after winding in the step (3) is 150-300D. Further, in the step (3), the mass ratio of the sheath layer to the core layer of the active fiber with the sheath-core structure is 7:2-5. Further, the method for removing the skin layers of the active fibers with the skin-core structure in the step (4) comprises the steps of immersing the fibers in alkali liquor at the temperature of 95-120 ℃ for 15-45 min, cleaning and drying. Further, the fineness of the active fiber is 2-3D. According to a second aspect of the invention, a fluid fabric based on photocatalysis-kinetic energy synergy, which is prepared from the active fibers, is provided, and comprises a surface layer, a middle layer and an inner layer which are sequentially arranged, wherein at least one layer of the surface layer, the middle layer and the inner