Fabric with enhanced photocatalytic aldehyde removal based on light refraction principle

Abstract

The application discloses a fabric for enhancing photocatalysis aldehyde removal based on light refraction principle, in particular to a twill double-layer fabric, which comprises a group of warp yarns and two groups of weft yarns, the two groups of weft yarns are all interwoven with the warp yarns, and the two groups of weft yarns are photocatalysis yarns and silver-plated polyester flat filaments respectively, the photocatalysis yarns are located on the surface layer of the warp yarns, the silver-plated polyester flat filaments are located on the inner layer of the warp yarns, and the photocatalysis yarns are prepared through the processes of cleaning, mixing, carding, drawing, roving and spinning of photocatalysis fibers with a triangular prism cross-section structure. The application relates to the functional textile technology field, and particularly provides the fabric for enhancing photocatalysis aldehyde removal based on light refraction principle, which can clean the inner wall of the kettle body synchronously in the reaction process, ensures that raw materials can all participate in the reaction, avoids the subsequent reaction in the kettle body, and can assist the smooth discharge of products.

Description

Technical Field

[0001] This invention relates to the field of functional textile technology, specifically to a fabric for enhanced photocatalytic formaldehyde removal based on the principle of light refraction. Background Technology

[0002] To enhance product added value and market competitiveness, the research and development of functional textiles is of significant practical importance to textile enterprises. Photocatalysts, under light irradiation, undergo a photocatalytic reaction similar to photosynthesis, producing highly oxidizing free hydroxyl radicals and reactive oxygen species. These possess strong photo-oxidation and reduction capabilities, capable of oxidizing and decomposing various organic compounds and some inorganic substances. They can effectively degrade toxic and harmful gases in the air, such as formaldehyde, disrupt bacterial cell membranes, and solidify viral proteins. They can kill bacteria and decompose organic pollutants into harmless water (H2O) and carbon dioxide (CO2), thus exhibiting powerful bactericidal, deodorizing, mildew-proof, stain-resistant, self-cleaning, and air-purifying functions. Applying nano-sized TiO2 to the surface of fabrics to form photocatalytic products meets consumers' safety needs and has a very broad market prospect.

[0003] For photocatalytic fabrics, the larger the contact surface area between the photocatalyst and light, the stronger the photocatalytic reaction and the more free hydroxyl radicals and active oxygen are produced. Therefore, this solution aims to provide a fabric that enhances the photocatalytic formaldehyde removal effect by improving the contact surface area between the photocatalyst and light. Summary of the Invention

[0004] In view of the above situation and to overcome the existing defects, the present invention provides a fabric based on the principle of light refraction that can simultaneously clean the inner wall of the reactor during the reaction process, ensure that all raw materials can participate in the reaction, avoid subsequent reactions in the reactor, and facilitate the smooth discharge of products.

[0005] The present invention provides the following technical solution: The present invention proposes a fabric for enhanced photocatalytic formaldehyde removal based on the principle of light refraction, specifically a twill double-layer fabric. The twill double-layer fabric includes one set of warp yarns and two sets of weft yarns. Both sets of weft yarns are interwoven with the warp yarns. The two sets of weft yarns are respectively photocatalytic yarns and silver-plated polyester flat filaments. The photocatalytic yarns are located on the surface of the warp yarns, and the silver-plated polyester flat filaments are located on the inner layer of the warp yarns.

[0006] Furthermore, the photocatalytic yarn is made from photocatalytic fibers with a triangular prism cross-section through processes of cotton cleaning, cotton blending, cotton carding, drawing, roving, and spinning.

[0007] Furthermore, the method for producing the photocatalytic fiber is as follows:

[0008] (1) Photocatalytic spinning solution is prepared by adding nano-sized titanium dioxide particles during the melting process of polyester chips;

[0009] (2) The photocatalytic spinning solution is produced by spinning it through a triangular spinneret.

[0010] Furthermore, the silver-plated polyester flat filament is a polyester flat filament that has undergone silver plating treatment.

[0011] Furthermore, the interweaving structure of the photocatalytic yarn and the warp yarn is a one-up, four-down weave, and the interweaving structure of the silver-plated polyester flat filament and the warp yarn is a one-up, four-down weave. The photocatalytic yarn and the silver-plated polyester flat filament are always located on both sides of the warp yarn.

[0012] Furthermore, the warp yarn is polyester filament.

[0013] The beneficial effects achieved by the present invention using the above structure are as follows: The fabric for enhanced photocatalytic formaldehyde removal based on the principle of light refraction proposed in this invention has the following advantages:

[0014] (1) Photocatalytic yarn is made by mixing and twisting photocatalytic fibers with triangular prism cross-section as raw materials. Under the same fineness, the surface area of ​​the front of the triangular prism cross-section fiber that contacts the light is greater than that of the front of the circular cross-section fiber. The titanium dioxide on the surface of the triangular prism cross-section fiber can be better exposed to light and generate photolysis, thereby improving the formaldehyde removal function of the photocatalytic yarn. At the same time, the triangular prism cross-section structure has the effect of light refraction, which can effectively reflect or transmit the irradiated light onto the fabric plane, increasing the light intensity inside the fabric.

[0015] (2) The double-layer structure of photocatalytic yarn made of silver-plated polyester flat filament and triangular prism structure photocatalytic fiber is combined. When light penetrates the fabric and is reflected by the silver-plated polyester flat filament, the overall light intensity of the fabric is further enhanced, thereby enhancing the overall photocatalytic formaldehyde removal effect of the fabric.

[0016] (3) This design can enhance the formaldehyde removal rate by 30% compared with ordinary photocatalytic fabrics under the same light intensity. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0018] Figure 1 This is a schematic diagram of the interweaving structure of the photocatalytic yarn, silver-plated polyester flat filaments, and warp yarns of the present invention.

[0019] Among them, 1. Photocatalytic yarn, 2. Silver-plated polyester flat filament, and 3. Warp yarn. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0021] It should be noted that the terms “front,” “back,” “left,” “right,” “up,” and “down” used in the following description refer to the directions shown in the attached diagram, while the terms “inside” and “outside” refer to the directions toward or away from the geometric center of a specific component, respectively.

[0022] like Figure 1 This embodiment provides a fabric for enhanced photocatalytic formaldehyde removal based on the principle of light refraction. Specifically, it is a twill double-layer fabric, which includes one set of warp yarns 3 and two sets of weft yarns. Both sets of weft yarns are interwoven with the warp yarns 3. The two sets of weft yarns are photocatalytic yarn 1 and silver-plated polyester flat filament 2, respectively. The photocatalytic yarn 1 is located on the surface of the warp yarns 3, and the silver-plated polyester flat filament 2 is located on the inner layer of the warp yarns 3. With the double-layer structure design of silver-plated polyester flat filament 2 and photocatalytic yarn 1, when light penetrates the fabric and is reflected by the silver-plated polyester flat filament 2, the overall light intensity of the fabric is further enhanced, thereby enhancing the overall photocatalytic formaldehyde removal effect of the fabric.

[0023] Specifically, in this embodiment, the warp yarn 3 is polyester filament, the silver-plated polyester flat filament 2 is silver-plated polyester flat filament, and the photocatalytic yarn 1 is made from photocatalytic fibers with a triangular prism cross-section through cotton cleaning, blending, carding, drawing, roving, and spinning processes. Under the same fineness, the surface area of ​​the triangular prism cross-section fiber in contact with light is larger than that of the circular cross-section fiber. The titanium dioxide on the surface of the triangular prism cross-section fiber can better receive light and generate photolysis, thereby improving the formaldehyde removal function of the photocatalytic yarn 1. At the same time, the triangular prism cross-section structure has a light refraction effect, which can effectively reflect or transmit the irradiated light onto the fabric plane, increasing the light intensity inside the fabric.

[0024] The production method of the photocatalytic fiber is as follows:

[0025] (1) Photocatalytic spinning solution is prepared by adding nano-sized titanium dioxide particles during the melting process of polyester chips;

[0026] (2) The photocatalytic spinning solution is produced by spinning it through a triangular spinneret.

[0027] Specifically, refer to Figure 1In this embodiment, the interweaving structure of the photocatalytic yarn 1 and the warp yarn 3 is a one-up, four-down weave, and the interweaving structure of the silver-plated polyester flat filament 2 and the warp yarn 3 is a one-up, four-down weave. The photocatalytic yarn 1 and the silver-plated polyester flat filament 2 are always located on both sides of the warp yarn 3.

[0028] The fabric obtained using the above technical solution has the following advantages compared to traditional fabrics:

[0029] (1) Photocatalytic yarn 1 is made by mixing and twisting photocatalytic fibers with triangular prism cross-section as raw materials. Under the same fineness, the surface area of ​​the front of the triangular prism cross-section fiber in contact with light is larger than that of the front of the circular cross-section fiber. The titanium dioxide on the surface of the triangular prism cross-section fiber can be better exposed to light and generate photolysis, thereby improving the formaldehyde removal function of photocatalytic yarn 1. At the same time, the triangular prism cross-section structure has the effect of light refraction, which can effectively reflect or transmit the irradiated light onto the fabric plane, increasing the light intensity inside the fabric.

[0030] (2) The photocatalytic yarn 1 made of silver-plated polyester flat filament 2 and triangular prism structure photocatalytic fiber is combined with a double-layer structure. When light penetrates the fabric and is reflected by the silver-plated polyester flat filament 2, the overall light intensity of the fabric is further enhanced, thereby enhancing the overall photocatalytic formaldehyde removal effect of the fabric.

[0031] (3) This design can enhance the formaldehyde removal rate by 30% compared with ordinary photocatalytic fabrics under the same light intensity.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, material, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, material, or apparatus.

[0033] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fabric for enhanced photocatalytic formaldehyde removal based on the principle of light refraction, characterized in that, Specifically, it is a twill double-layer fabric, which includes one set of warp yarns and two sets of weft yarns. Both sets of weft yarns are interwoven with the warp yarns. The two sets of weft yarns are photocatalytic yarn and silver-plated polyester flat filament, respectively. The photocatalytic yarn is located on the surface of the warp yarns, and the silver-plated polyester flat filament is located on the inner layer of the warp yarns. The photocatalytic yarn is made from photocatalytic fibers with a triangular prism cross-section through processes of cotton cleaning, blending, carding, drawing, roving, and spinning.

2. The fabric for enhanced photocatalytic formaldehyde removal based on the principle of light refraction as described in claim 1, characterized in that, The production method of the photocatalytic fiber is as follows: (1) Photocatalytic spinning solution is prepared by adding nano-sized titanium dioxide particles during the melting process of polyester chips; (2) The photocatalytic spinning solution is produced by spinning it through a triangular spinneret.

3. The fabric for enhanced photocatalytic formaldehyde removal based on the principle of light refraction as described in claim 1, characterized in that, The silver-plated polyester flat filament is a polyester flat filament that has undergone silver plating treatment.

4. The fabric for enhanced photocatalytic formaldehyde removal based on the principle of light refraction as described in claim 1, characterized in that, The photocatalytic yarn and the warp yarn are interwoven in a one-up, four-down weave, and the silver-plated polyester flat filament and the warp yarn are interwoven in a one-up, four-down weave. The photocatalytic yarn and the silver-plated polyester flat filament are always located on both sides of the warp yarn.

5. The fabric for enhanced photocatalytic formaldehyde removal based on the principle of light refraction as described in claim 1, characterized in that, The warp yarn is polyester filament.

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