Preparation method of self-cleaning antibacterial anti-mite fabric

Abstract

The invention discloses a preparation method of a self-cleaning antibacterial anti-mite fabric, and relates to the technical field of fabric preparation, and the preparation method comprises the following steps: 1-5 g of Cu (NO3) 2.6 H2O, 0.1-1.5 g of isophthalic acid, 20-50 mL of water and a certain antibacterial enzyme mixture are sequentially poured into a glass beaker, stirring is performed for 30 min, uniform mixing is performed, and the antibacterial anti-mite fabric is obtained; pouring the mixture into a 25mL polytetrafluoroethylene inner container, putting the inner container into a high-pressure kettle, sealing, carrying out high-temperature reaction for 72 hours in a drying oven at 90 DEG C, separating out a light blue product by using a centrifugal machine after the reaction is completed, washing for multiple times by using water, drying, mixing the obtained light blue powder with PET slices, melting and granulating, and drying to obtain the PET composite material. The preparation method comprises the following steps: preparing a bio-enzyme coated with a metal frame, mixing the bio-enzyme coated with the metal frame with common polyester chips, carrying out melt spinning to prepare multifunctional polyester fibers containing the bio-enzyme coated with the metal frame, taking the polyester fibers as weft yarns and cotton fibers as warp yarns, and interweaving into gray fabric according to a certain rule, so that the problem that the existing antibacterial anti-mite fabric is poor in effect durability is solved.

Description

Technical Field

[0001] This invention relates to the field of fabric preparation technology, specifically to a method for preparing a self-cleaning, antibacterial, and anti-mite fabric. Background Technology

[0002] As living standards and pace of life continue to improve and accelerate, many people have to travel frequently for business and stay in hotels. However, in the hotel industry, the antibacterial and anti-mite properties of bedding are not only related to the health experience of guests, but also a core indicator of brand reputation and operational efficiency. Mites and their excrement are an important source of allergic rhinitis, eczema and even asthma, while bacterial growth may cause cross-infection, especially in high-frequency hotel settings, where the risk is magnified many times over.

[0003] However, most hotel bedding products currently have significant shortcomings in terms of the durability of their antibacterial and anti-mite properties. First, chemical antibacterial agents are prone to degradation. Many bedding products rely on antibacterial additives added during finishing processes, such as silver ions or quaternary ammonium salts. Although they are effective initially, after repeated industrial washing, high-temperature drying, and ultraviolet disinfection, the effective ingredients are rapidly lost, and the antibacterial rate drops sharply from 99% to less than 60%, rendering them ineffective. In particular, budget hotels, in order to reduce costs, have a bedding replacement cycle of 3-5 years, far exceeding the lifespan of the antibacterial coating. Second, physical anti-mite layers are prone to aging. Although some high-end hotels use microporous membranes or high-density fabrics that can isolate mites through physical barriers, after long-term use, the fiber structure loosens, the micropores enlarge, the protective performance declines, and the breathability is insufficient, resulting in a noticeable stuffy feeling.

[0004] For antibacterial and anti-mite agents, plant extracts are quite popular. Patent 202211558998.8 provides a method for preparing antibacterial and anti-mite intelligent constant temperature fiber, in which the antibacterial and anti-mite properties mainly rely on extracts from traditional Chinese herbal plants. However, during the fiber preparation process, the loss rate of Artemisia argyi extract is 3.5-5.0%, and the loss rate of Litsea cubeba extract is 4.0-6.0%, which increases the production cost. Moreover, the extracts often lack persistence during the washing process. Patent 202510231550.2 discloses an antibacterial and anti-mite home textile fabric, which combines zinc and methyl imidazole... After being combined with azole, a zinc zeolite structure similar to zeolite is formed. 1,3,5-Benzotricarboxylic acid is added to the zinc zeolite structure to form a complex metal-organic framework. 1,3,5-Benzotricarboxylic acid comes into contact with key metabolic enzymes in bacterial cells and inhibits their activity. At the same time, after the complex metal-organic framework binds to zinc ions, it can slowly release zinc ions over time. The slowly released zinc ions have antibacterial properties and can interfere with the metabolic process of bacteria and inhibit their growth. However, as the Zn ions are released, the entire framework structure also collapses, so the antibacterial and anti-mite effects are difficult to maintain for a long time.

[0005] Compared to chemical auxiliaries, bio-enzymes are a safe and highly effective antibacterial and anti-mite agent. Once they come into contact with mites or bacteria, they precisely hydrolyze their cell walls and epidermal chitin, achieving a kill rate of over 99%. However, bio-enzymes often require stringent storage conditions. Therefore, achieving a wide range of adaptability for enzymes and their application on fabrics is of great significance for practical applications. Summary of the Invention

[0006] The purpose of this invention is to provide a method for preparing a self-cleaning antibacterial and anti-mite fabric, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a method for preparing a self-cleaning antibacterial and anti-mite fabric, comprising the following steps:

[0008] S1: Pour 1-5g Cu(NO3)2·6H2O, 0.1-1.5g isophthalic acid, 20-50mL water, and a certain amount of antibacterial enzyme mixture into a glass beaker and stir for 30 minutes to mix evenly;

[0009] S2: Pour the above mixture into a 25mL polytetrafluoroethylene inner liner and place the inner liner into a high-pressure reactor and seal it. React at a high temperature of 90℃ for 72h. After the reaction is complete, use a centrifuge to separate the light blue product, wash it several times with water and then dry it.

[0010] S3: The obtained light blue powder is mixed with PET chips and melt-granulated, then mixed with ordinary polyester chips and melt-spun to prepare multifunctional polyester fibers containing metal framework-coated bioenzymes.

[0011] S4: The fabric is made of polyester fiber as weft yarn and cotton fiber as warp yarn, interwoven in a certain pattern. It is a layered open-end machine with a back beam depth of 3cm, a back beam height of 0cm, a warp stop depth of 6cm, a warp stop height of 0cm, a machine tension of 2.5cN, a heddle flattening time of 322°, and a machine speed of 300r / min.

[0012] Preferably, the antibacterial enzyme includes two or more of the following: lysostaphin, Bacillus subtilis enzyme, lysozyme, glucose oxidase, cellobiose dehydrogenase, lactoperoxidase, and chitinase.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] The antibacterial and anti-mite products prepared by this invention can resist bacteria and mites through photocatalysis during the day and through biological enzymes at night, providing all-weather protection.

[0015] This invention expands the pH range and temperature range of enzyme reactions and improves the persistence of enzyme activity by encapsulating biological enzymes in a metal-organic framework.

[0016] This invention further improves the durability of antibacterial and anti-mite properties by adding composite functional particles to the spinning solution and weaving it together with cotton fibers. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0018] Example 1: A method for preparing a self-cleaning antibacterial and anti-mite fabric, comprising the following steps:

[0019] S1: Pour 2.5g Cu(NO3)2·6H2O, 0.8g isophthalic acid, 30mL water, 3% chitinase and lysostaphylococcal enzyme mixture into a glass beaker one after another, and stir for 30min to mix evenly.

[0020] S2: Pour the above mixture into a 25mL polytetrafluoroethylene inner liner and place the inner liner into a high-pressure reactor and seal it. React at a high temperature of 90℃ for 72h. After the reaction is complete, use a centrifuge to separate the light blue product, wash it several times with water, and then dry it.

[0021] S3: The obtained light blue powder is mixed with PET chips and melt-granulated, with the powder addition amount being 5%. Then it is mixed with ordinary polyester chips and melt-spun to prepare multifunctional polyester fibers containing metal framework-coated bioenzymes.

[0022] S4: The fabric is made of polyester fiber as weft yarn and cotton fiber as warp yarn, interwoven in a certain pattern. It is a layered open-end machine with a back beam depth of 3cm, a back beam height of 0cm, a warp stop depth of 6cm, a warp stop height of 0cm, a machine tension of 2.5cN, a heddle flattening time of 322°, and a machine speed of 300r / min.

[0023] Example 2: A method for preparing a self-cleaning antibacterial and anti-mite fabric, comprising the following steps:

[0024] S1: Pour 2.5g Cu(NO3)2·6H2O, 0.8g isophthalic acid, 30mL water, 5% chitinase and lysostaphylococcal enzyme mixture into a glass beaker one after another, and stir for 30min to mix evenly.

[0025] S2: Pour the above mixture into a 25mL polytetrafluoroethylene inner liner and place the inner liner into a high-pressure reactor and seal it. React at a high temperature of 90℃ for 72h. After the reaction is complete, use a centrifuge to separate the light blue product, wash it several times with water, and then dry it.

[0026] S3: The obtained light blue powder is mixed with PET chips and melt-granulated, with the powder addition amount being 5%. Then it is mixed with ordinary polyester chips and melt-spun to prepare multifunctional polyester fibers containing metal framework-coated bioenzymes.

[0027] S4: The fabric is made of polyester fiber as weft yarn and cotton fiber as warp yarn, interwoven in a certain pattern. It is a layered open-end machine with a back beam depth of 3cm, a back beam height of 0cm, a warp stop depth of 6cm, a warp stop height of 0cm, a machine tension of 2.5cN, a heddle flattening time of 322°, and a machine speed of 300r / min.

[0028] Example 3: A method for preparing a self-cleaning antibacterial and anti-mite fabric, comprising the following steps:

[0029] S1: Pour 2.5g Cu(NO3)2·6H2O, 0.8g isophthalic acid, 30mL water, 7% chitinase and lysostaphylococcal enzyme mixture into a glass beaker one after another, and stir for 30min to mix evenly.

[0030] S2: Pour the above mixture into a 25mL polytetrafluoroethylene inner liner and place the inner liner into a high-pressure reactor and seal it. React at a high temperature of 90℃ for 72h. After the reaction is complete, use a centrifuge to separate the light blue product, wash it several times with water, and then dry it.

[0031] S3: The obtained light blue powder is mixed with PET chips and melt-granulated, then mixed with ordinary polyester chips and melt-spun to prepare multifunctional polyester fibers containing metal framework-coated bioenzymes.

[0032] S4: The fabric is made of polyester fiber as weft yarn and cotton fiber as warp yarn, interwoven in a certain pattern. It is a layered open-end machine with a back beam depth of 3cm, a back beam height of 0cm, a warp stop depth of 6cm, a warp stop height of 0cm, a machine tension of 2.5cN, a heddle flattening time of 322°, and a machine speed of 300r / min.

[0033] Example 4: A method for preparing a self-cleaning antibacterial and anti-mite fabric, comprising the following steps:

[0034] S1: Pour 2.5g Cu(NO3)2·6H2O, 0.8g isophthalic acid, 30mL water, and a mixture of 3% chitinase and glucose oxidase into a glass beaker and stir for 30min to mix thoroughly.

[0035] S2: Pour the above mixture into a 25mL polytetrafluoroethylene inner liner and place the inner liner into a high-pressure reactor and seal it. React at a high temperature of 90℃ for 72h. After the reaction is complete, use a centrifuge to separate the light blue product, wash it several times with water, and then dry it.

[0036] S3: The obtained light blue powder is mixed with PET chips and melt-granulated, with the powder addition amount being 5%. Then it is mixed with ordinary polyester chips and melt-spun to prepare multifunctional polyester fibers containing metal framework-coated bioenzymes.

[0037] S4: The fabric is made of polyester fiber as weft yarn and cotton fiber as warp yarn, interwoven in a certain pattern. It is a layered open-end machine with a back beam depth of 3cm, a back beam height of 0cm, a warp stop depth of 6cm, a warp stop height of 0cm, a machine tension of 2.5cN, a heddle flattening time of 322°, and a machine speed of 300r / min.

[0038] Example 5: A method for preparing a self-cleaning antibacterial and anti-mite fabric, comprising the following steps:

[0039] S1: Pour 2.5g Cu(NO3)2·6H2O, 0.8g isophthalic acid, 30mL water, and a mixture of 5% chitinase and glucose oxidase into a glass beaker and stir for 30 minutes until well mixed.

[0040] S2: Pour the above mixture into a 25mL polytetrafluoroethylene inner liner and place the inner liner into a high-pressure reactor and seal it. React at a high temperature of 90℃ for 72h. After the reaction is complete, use a centrifuge to separate the light blue product, wash it several times with water, and then dry it.

[0041] S3: The obtained light blue powder is mixed with PET chips and melt-granulated, with the powder addition amount being 5%. Then it is mixed with ordinary polyester chips and melt-spun to prepare multifunctional polyester fibers containing metal framework-coated bioenzymes.

[0042] S4: The fabric is made of polyester fiber as weft yarn and cotton fiber as warp yarn, interwoven in a certain pattern. It is a layered open-end machine with a back beam depth of 3cm, a back beam height of 0cm, a warp stop depth of 6cm, a warp stop height of 0cm, a machine tension of 2.5cN, a heddle flattening time of 322°, and a machine speed of 300r / min.

[0043] Example 6: A method for preparing a self-cleaning antibacterial and anti-mite fabric, comprising the following steps:

[0044] S1: Pour 2.5g Cu(NO3)2·6H2O, 0.8g isophthalic acid, 30mL water, and a mixture of 7% chitinase and glucose oxidase into a glass beaker and stir for 30 minutes until well mixed.

[0045] S2: Pour the above mixture into a 25mL polytetrafluoroethylene inner liner and place the inner liner into a high-pressure reactor and seal it. React at a high temperature of 90℃ for 72h. After the reaction is complete, use a centrifuge to separate the light blue product, wash it several times with water, and then dry it.

[0046] S3: The obtained light blue powder is mixed with PET chips and melt-granulated, with the powder addition amount being 5%. Then it is mixed with ordinary polyester chips and melt-spun to prepare multifunctional polyester fibers containing metal framework-coated bioenzymes.

[0047] S4: The fabric is made of polyester fiber as weft yarn and cotton fiber as warp yarn, interwoven in a certain pattern. It is a layered open-end machine with a back beam depth of 3cm, a back beam height of 0cm, a warp stop depth of 6cm, a warp stop height of 0cm, a machine tension of 2.5cN, a heddle flattening time of 322°, and a machine speed of 300r / min.

[0048] Comparative Example 1: A method for preparing a self-cleaning antibacterial and anti-mite fabric, comprising the following steps:

[0049] S1: Pour 2.5g Cu(NO3)2·6H2O, 0.8g isophthalic acid, and 30mL water into a glass beaker and stir for 30min to mix evenly.

[0050] S2: Pour the above mixture into a 25mL polytetrafluoroethylene inner liner and place the inner liner into a high-pressure reactor and seal it. React at a high temperature of 90℃ for 72h. After the reaction is complete, use a centrifuge to separate the light blue product, wash it several times with water, and then dry it.

[0051] S3: The obtained light blue powder is mixed with PET chips and melt-granulated, with the powder addition amount being 5%. Then it is mixed with ordinary polyester chips and melt-spun to prepare multifunctional polyester fibers containing metal framework-coated bioenzymes.

[0052] S4: The fabric is made of polyester fiber as weft yarn and cotton fiber as warp yarn, interwoven in a certain pattern. It is a layered open-end machine with a back beam depth of 3cm, a back beam height of 0cm, a warp stop depth of 6cm, a warp stop height of 0cm, a machine tension of 2.5cN, a heddle flattening time of 322°, and a machine speed of 300r / min.

[0053] Comparative Example 2: A method for preparing a self-cleaning antibacterial and anti-mite fabric, comprising the following steps:

[0054] S1: Pour 2.5g Cu(NO3)2·6H2O, 0.8g isophthalic acid, 30mL water, and 7% chitosan into a glass beaker and stir for 30 minutes to mix evenly.

[0055] S2: Pour the above mixture into a 25mL polytetrafluoroethylene inner liner and place the inner liner into a high-pressure reactor and seal it. React at a high temperature of 90℃ for 72h. After the reaction is complete, use a centrifuge to separate the light blue product, wash it several times with water, and then dry it.

[0056] S3: The obtained light blue powder is mixed with PET chips and melt-granulated, with the powder addition amount being 5%. Then it is mixed with ordinary polyester chips and melt-spun to prepare multifunctional polyester fibers containing metal framework-coated bioenzymes.

[0057] S4: The fabric is made of polyester fiber as weft yarn and cotton fiber as warp yarn, interwoven in a certain pattern. It is a layered open-end machine with a back beam depth of 3cm, a back beam height of 0cm, a warp stop depth of 6cm, a warp stop height of 0cm, a machine tension of 2.5cN, a heddle flattening time of 322°, and a machine speed of 300r / min.

[0058] Comparative Example 3: A method for preparing a self-cleaning antibacterial and anti-mite fabric, comprising the following steps:

[0059] S1: Pour 2.5g Cu(NO3)2·6H2O, 0.8g isophthalic acid, 30mL water, and 7% glucose oxidase into a glass beaker one after another, and stir for 30 minutes to mix evenly.

[0060] S2: Pour the above mixture into a 25mL polytetrafluoroethylene inner liner and place the inner liner into a high-pressure reactor and seal it. React at a high temperature of 90℃ for 72h. After the reaction is complete, use a centrifuge to separate the light blue product, wash it several times with water, and then dry it.

[0061] S3: The obtained light blue powder is mixed with PET chips and melt-granulated, with the powder addition amount being 5%. Then it is mixed with ordinary polyester chips and melt-spun to prepare multifunctional polyester fibers containing metal framework-coated bioenzymes.

[0062] S4: The fabric is made of polyester fiber as weft yarn and cotton fiber as warp yarn, interwoven in a certain pattern. It is a layered open-end machine with a back beam depth of 3cm, a back beam height of 0cm, a warp stop depth of 6cm, a warp stop height of 0cm, a machine tension of 2.5cN, a heddle flattening time of 322°, and a machine speed of 300r / min.

[0063] Test Example 1: To quickly evaluate the antibacterial effects of the antibacterial compositions in Examples 1-6 and Comparative Examples 1-3, this experiment used a quantitative detection method—the shaking method. The fabric was cut into pieces and placed in the culture medium of different bacterial strains. The well plate was placed under a xenon lamp (100mW cm-1) with a 420nm filter for 20 minutes for irradiation. Similar experiments were conducted in the dark. Each group of experiments was set up in triplicate. The antibacterial effect of each composition was evaluated by observing the number of bacterial strains. The anti-mite performance was evaluated according to GB / T24253-2009 "Evaluation of anti-mite performance of textiles". The mite repellency rate results are shown in Table 1.

[0064] Table 1. Results of antibacterial and anti-mite performance tests under visible light conditions (unit: %)

[0065]

[0066] Table 2. Results of antibacterial and anti-mite performance tests under dark conditions (unit: %)

[0067]

[0068] 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, article, 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, article, or apparatus.

[0069] 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 method for preparing a self-cleaning antibacterial anti-mite fabric, characterized in that: The method comprises the following steps: S1: 1-5 g Cu(NO3)2·6H2O, 0.1-1.5 g isophthalic acid, 20-50 mL water, and a certain antibacterial enzyme mixture are sequentially poured into a glass beaker, and stirred for 30 min to mix uniformly; S2: the mixture is poured into a 25 mL polytetrafluoroethylene liner, and the liner is sealed in an autoclave and placed in an oven at 90°C for high-temperature reaction for 72 h; after the reaction is completed, a centrifuge is used to separate out a light blue product, which is washed with water for several times and dried; S3: the obtained light blue powder is mixed with PET chips to melt and granulate, and then the light blue powder is mixed with ordinary polyester chips and melt-spun to prepare multifunctional polyester fibers containing a metal framework coated with biological enzymes; S4: the polyester fibers are used as weft yarns, and cotton fibers are used as warp yarns; the weft yarns and the warp yarns are interwoven into a gray cloth according to a certain rule; the gray cloth is opened in layers; the loom is set to a back beam depth of 3 cm, a back beam height of 0, a warp stop depth of 6 cm, a warp stop height of 0, a loom tension of 2.5 cN, a harness leveling time of 322°, and a speed of 300 r / min.

2. The method for preparing a self-cleaning antibacterial anti-mite fabric according to claim 1, characterized in that: The antibacterial enzyme comprises two or more of staphyloglycolysin, bacillus subtilis enzyme, lysozyme, glucose oxidase, cellobiose dehydrogenase, lactoperoxidase, and chitinase.

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