An organic antibacterial down jacket with synergistic effects of polyhalamine and quaternary ammonium salt

Abstract

The present invention discloses an organic antibacterial down jacket with a synergistic effect of polyhalamines and quaternary ammonium salts. The down jacket is made of an antibacterial fabric woven with warp and weft yarns, either or both of which are organic antibacterial yarns; the organic antibacterial yarns contain the antibacterial agent SiO2@NDA-Cl. By adding the organic antibacterial agent SiO2@NDA-Cl to the yarns of the down jacket fabric, the present invention utilizes the synergistic effect between the polyhalamines and quaternary ammonium salts in the SiO2@NDA-Cl antibacterial agent to effectively improve the antibacterial effect and durability of the down jacket.

Description

Technical Field

[0001] The invention belongs to the technical field of clothing fabrics, and particularly relates to an organic antibacterial down jacket synergistically prepared with polyhalamine and quaternary ammonium salt. Background Art

[0002] Down jackets are popular among consumers for their excellent warmth and comfort. However, due to the unique fabric properties of down jackets, they are typically washed infrequently to maintain their warmth. This makes them susceptible to bacterial and viral growth, posing a health risk to the wearer. This is why down jacket fabrics with antibacterial properties have emerged.

[0003] The mainstream antibacterial down jacket fabrics on the market today generally achieve the effect of improving the antibacterial properties of down jacket fabrics by adding inorganic antibacterial materials (such as silver ions, etc.) to the fabrics. This type of antibacterial material has the following defects: First, the ions in the inorganic antibacterial material are metal ions, which may affect human health if used for a long time; second, this antibacterial material is generally added to the fabric in the form of an additive. As the use time increases and the number of washes increases, the antibacterial material on the down jacket will be greatly reduced, thereby greatly weakening its antibacterial effect. Therefore, the problem of sustained antibacterial protection of down jackets has not been solved. Third, the antibacterial materials currently on the market are generally single antibacterial forms, and the antibacterial effect and antibacterial efficiency are average. Fourth, general down jackets use antibacterial materials on the outer layer, but when wearing a down jacket, the human body will sweat a certain amount, which is easy to breed bacteria. Therefore, the antibacterial problem of the inner layer of the down jacket has not been solved. Summary of the Invention

[0004] In order to solve the technical problem of poor antibacterial effect and antibacterial persistence of down jackets in the prior art, the present invention proposes an organic antibacterial down jacket with synergistic polyhalamine and quaternary ammonium salt, so as to achieve the technical effect of effectively improving the antibacterial effect and antibacterial persistence of the down jacket.

[0005] In order to achieve the above-mentioned object, the present invention adopts the following technical solutions:

[0006] An organic antibacterial down jacket with synergistic effects of polyhalamine and quaternary ammonium salt comprises an antibacterial fabric woven with warp yarn and weft yarn, wherein either one of the warp yarn and the weft yarn or both of the warp yarn and the weft yarn are organic antibacterial yarns; and the organic antibacterial yarn contains the antibacterial agent SiO2@NDA-Cl.

[0007] Furthermore, the antibacterial fabric includes an inner layer and an outer layer, and the inner layer is coated with a layer of moisture-permeable and down-proof glue.

[0008] Furthermore, the warp yarn is made of yarn with a model number of NFDY20D / 24F, and the weft yarn is made of organic antibacterial yarn, and the yarn model of the organic antibacterial yarn is NDTY20D / 12F.

[0009] Furthermore, the preparation method of the organic antibacterial yarn comprises the following steps:

[0010] (1) Adding the antibacterial agent SiO2@NDA-Cl into nylon chips to prepare nylon antibacterial masterbatch;

[0011] (2) Adding antibacterial masterbatch to nylon yarn to obtain organic antibacterial yarn.

[0012] Furthermore, the content of the antibacterial agent SiO2@NDA-Cl in the nylon antibacterial masterbatch is 20% to 30% by mass.

[0013] Furthermore, the content of the antibacterial masterbatch in the organic antibacterial yarn is 1.5% to 3.0% by mass. Furthermore, the synthesis process of the antibacterial agent SiO2@NDA-Cl is as follows:

[0014] A. Synthetic terpolymer NDA

[0015] The terpolymer NDA is synthesized by reacting a polyhalogenamine precursor, a cationic quaternary ammonium salt, and acrylic acid. The reaction formula is as follows:

[0016]

[0017] B. Synthetic antibacterial agent SiO2@NDA-Cl

[0018] Tetraethoxysilane and 3-aminopropyltriethoxysilane are used to generate NH2-SiO2 through a sol-gel method. Then, NH2-SiO2 and the terpolymer NDA are subjected to an amidation reaction to generate SiO2@NDA. Finally, the antibacterial agent SiO2@NDA-Cl is obtained through chlorination. The specific reaction process is shown below:

[0019]

[0020] The invention discloses an antibacterial fabric for an organic antibacterial down jacket synergistically prepared with polyhalamine and quaternary ammonium salt. The fabric is woven with warp yarn and weft yarn, wherein either one of the warp yarn and the weft yarn or both of the warp yarn and the weft yarn are organic antibacterial yarns; and the organic antibacterial yarn contains the antibacterial agent SiO2@NDA-Cl.

[0021] A method for preparing an organic antibacterial down jacket with synergistic effects of polyhalamine and quaternary ammonium salt comprises the following steps:

[0022] Step a: weaving antibacterial grey cloth;

[0023] Step b: Desizing and refining

[0024] Refined antibacterial fabric is obtained by removing the slurry and oil agent from the antibacterial grey fabric;

[0025] Step c: Dyeing and setting

[0026] The antibacterial fabric is obtained by dyeing and setting the refined antibacterial fabric with acid dye;

[0027] Step d: Plate making

[0028] According to the designed style drawings, make plates and labels, and print paper patterns;

[0029] Step e: Cropping

[0030] Cut the antibacterial fabric according to the paper pattern in step d to obtain garment pieces;

[0031] Step f: Sewing and ironing

[0032] Sewing and ironing the garment pieces and accessories in step e to form an organic antibacterial down jacket prepared by synergizing multi-halogenamine and quaternary ammonium salt;

[0033] Wherein, the antibacterial grey cloth in step a comprises warp yarn and weft yarn, and either or both of the warp yarn and the weft yarn are organic antibacterial yarns; and the organic antibacterial yarns contain the antibacterial agent SiO2@NDA-Cl.

[0034] Furthermore, in step c, the inner layer of the obtained antibacterial fabric is coated with a layer of moisture-permeable and down-proof glue.

[0035] The beneficial effects of the present invention are:

[0036] The present invention effectively improves the antibacterial effect and antibacterial durability of down jackets by adding the antibacterial agent SiO2@NDA-Cl to the yarn of the down jacket fabric. Specifically, the antibacterial agent SiO2@NDA-Cl of the present invention contains a polyhalamine precursor and a cationic quaternary ammonium salt. The antibacterial mechanism of the polyhalamine is to release oxidizing halogen ions through electrostatic action to oxidize intracellular compounds such as bacterial enzymes, while the quaternary ammonium salt inactivates the bacteria through electrostatic force between the cationic center and the negatively charged bacterial membrane. Therefore, when the polyhalamine and quaternary ammonium salt are combined as a composite bactericidal unit, there is an enhanced synergistic effect. The mechanism of this synergistic effect is that after anionic bacteria are attracted to the composite bactericidal unit through the cationic QAS or pyridinium salt sites, the polyhalamine is then used for contact sterilization, thereby achieving the purpose of improving the antibacterial effect. At the same time, the introduction of silica particles as a carrier in the antibacterial agent SiO2@NDA-Cl of the present invention can effectively increase the specific surface area of ​​the antibacterial agent, thereby increasing the contact area between the antibacterial agent and bacteria, further improving its bactericidal effect.

[0037] The antibacterial agent SiO2@NDA-Cl used in the present invention is an organic antibacterial agent, which is safer than the currently commonly used inorganic antibacterial agents and has a longer antibacterial effect. DETAILED DESCRIPTION

[0038] The embodiment of the present invention provides an organic antibacterial down jacket with synergistic effects of polyhalamine and quaternary ammonium salt, so as to solve the technical problem of poor antibacterial effect and antibacterial persistence of down jackets in the prior art.

[0039] The general idea adopted by the present invention is as follows:

[0040] The embodiment of the present invention achieves the technical effect of effectively improving the antibacterial effect and antibacterial durability of the down jacket by adding the antibacterial agent SiO2@NDA-Cl to the yarn of the down jacket fabric.

[0041] The antimicrobial agent SiO2@NDA-Cl is prepared by reacting a polyhalogenamine precursor, a cationic quaternary ammonium salt, and acrylic acid to form a terpolymer NDA. The terpolymer is then amidated with NH2-SiO2, generated by a sol-gel method with tetraethoxysilane and 3-aminopropyltriethoxysilane, to form SiO2@NDA, which is then chlorinated. The polyhalogenamine precursor and the cationic quaternary ammonium salt are both antimicrobial agents. The polyhalogenamines' antimicrobial mechanism is to release oxidizing halogen ions through electrostatic interactions, oxidizing bacterial enzymes and other intracellular compounds. The quaternary ammonium salt inactivates bacteria through electrostatic interactions between the cationic center and the negatively charged bacterial membrane. Therefore, the combination of polyhalogenamines and quaternary ammonium salts as a composite bactericidal unit exhibits an enhanced synergistic effect. This synergistic effect occurs by attracting anionic bacteria into the composite bactericidal unit through cationic QAS or pyridinium salt sites, where the polyhalogenamine then carries out contact sterilization, thereby enhancing the antimicrobial efficacy. At the same time, for antibacterial materials, their specific surface area and the length of contact time with bacteria directly affect their antibacterial properties. The polyhalamines and quaternary ammonium salts in the antibacterial agent SiO2@NDA-Cl of the present invention are both contact-type sterilizers, so their contact area and contact time with bacteria will greatly affect their antibacterial effect. In this regard, the introduction of silica particles as a carrier in the antibacterial agent SiO2@NDA-Cl of the present invention can effectively increase the specific surface area of ​​the antibacterial agent, thereby increasing the contact area between the antibacterial agent and bacteria, and further improving its bactericidal effect.

[0042] At the same time, the antibacterial agent SiO2@NDA-Cl used in the embodiment of the present invention is an organic antibacterial agent, which is safer than the currently commonly used inorganic antibacterial agents and has a longer antibacterial effect.

[0043] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Unless otherwise defined, the technical terms or scientific terms used herein should be the common meanings understood by people with ordinary skills in the field to which the present invention belongs.

[0044] The words “first”, “second” and similar words used in the patent application specification and claims of the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, unless the context clearly indicates otherwise, the singular forms of “a”, “an” or “the” and similar words do not indicate a quantity limitation, but rather indicate the presence of at least one. Words such as “include” or “comprise” mean that the elements or objects appearing before “include” or “comprises” cover the features, wholes, steps, operations, elements and / or components listed after “include” or “comprises”, and do not exclude the existence or addition of one or more other features, wholes, steps, operations, elements, components and / or their collections. “Up”, “down”, “left”, “right” and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0045] Example 1

[0046] An organic antibacterial down jacket synergistically formulated with polyhalogenamines and quaternary ammonium salts includes an antibacterial fabric woven from warp and weft yarns. The warp yarn is made of yarn model NFDY20D / 24F, which is a fully stretched nylon filament with a high F-number and thin individual fibers, ensuring the fabric has an extremely soft feel. The weft yarn is made of organic antibacterial yarn containing the antibacterial agent SiO2@NDA-Cl. The organic antibacterial yarn is of yarn model NDTY20D / 12F. The NDTY20D / 12F yarn is a 20D nylon elastic yarn that ensures the antibacterial fabric has a certain degree of elasticity in the weft direction, giving the antibacterial fabric an extremely comfortable feel overall. It is worth noting that in actual application, technicians in this field can choose to set the warp yarn to organic antibacterial yarn and the weft yarn to ordinary yarn according to actual antibacterial needs; or set both the warp yarn and the weft yarn to organic antibacterial yarn.

[0047] The preparation method of the organic antibacterial yarn comprises the following steps:

[0048] (1) An antimicrobial agent, SiO2@NDA-Cl, is added to nylon slices to prepare a nylon antimicrobial masterbatch; the antimicrobial agent, SiO2@NDA-Cl, is present in the nylon antimicrobial masterbatch at a mass ratio of 20%. In actual applications, the mass ratio of the antimicrobial agent, SiO2@NDA-Cl, in the nylon antimicrobial masterbatch is not limited to the aforementioned 20%, and a person skilled in the art can determine the specific mass percentage based on actual needs.

[0049] (2) Adding the antibacterial masterbatch to nylon yarn to obtain an organic antibacterial yarn. The antibacterial masterbatch content in the organic antibacterial yarn is 1.5% by weight. In actual applications, the antibacterial masterbatch content in the organic antibacterial yarn is not limited to the above 1.5% by weight. Those skilled in the art can determine the specific content by weight according to actual needs.

[0050] The synthesis process of the antibacterial agent SiO2@NDA-Cl is as follows:

[0051] A. Synthetic terpolymer NDA

[0052] The terpolymer NDA is synthesized by reacting a polyhalogenamine precursor, a cationic quaternary ammonium salt, and acrylic acid. The reaction formula is as follows:

[0053]

[0054] B. Synthetic antibacterial agent SiO2@NDA-Cl

[0055] Tetraethoxysilane and 3-aminopropyltriethoxysilane are used to generate NH2-SiO2 through a sol-gel method. Then, NH2-SiO2 and the terpolymer NDA are subjected to an amidation reaction to generate SiO2@NDA. Finally, the antibacterial agent SiO2@NDA-Cl is obtained through chlorination. The specific reaction process is shown below:

[0056]

[0057] The antibacterial fabric comprises an inner layer and an outer layer. In order to ensure the down-proof performance of the inner layer of the antibacterial fabric, the inner layer is coated with a layer of moisture-permeable down-proof glue.

[0058] The preparation method of the organic antibacterial down jacket based on the above-mentioned polyhalogenamine and quaternary ammonium salt synergistic antibacterial down jacket comprises the following steps:

[0059] Step a: weaving antibacterial grey cloth;

[0060] Step b: Desizing and refining

[0061] Refined antibacterial fabric is obtained by removing the slurry and oil agent from the antibacterial grey fabric;

[0062] Step c: Dyeing and setting

[0063] The antibacterial fabric is obtained by dyeing and setting the refined antibacterial fabric with acid dye;

[0064] Step d: Plate making

[0065] According to the designed style drawings, make plates and labels, and print paper patterns;

[0066] Step e: Cropping

[0067] Cut the antibacterial fabric according to the paper pattern in step d to obtain garment pieces;

[0068] Step f: Sewing and ironing

[0069] Sewing and ironing the garment pieces and accessories in step e to form an organic antibacterial down jacket prepared by synergizing multi-halogenamine and quaternary ammonium salt;

[0070] The antibacterial fabric in step a comprises warp and weft yarns. The warp yarn is NFDY20D / 24F, a fully stretched nylon filament with a high denier count and fine individual fibers, ensuring the fabric has an extremely soft feel. The weft yarn is an organic antibacterial yarn containing the antibacterial agent SiO2@NDA-Cl. The organic antibacterial yarn is NDTY20D / 12F. NDTY20D / 12F is a 20D nylon elastic yarn that ensures a certain degree of stretch in the weft direction, resulting in an extremely comfortable feel overall. It is worth noting that in actual applications, those skilled in the art can choose to use organic antibacterial yarn for the warp and conventional yarn for the weft, or to use both organic antibacterial yarns, depending on the specific antibacterial needs.

[0071] Example 2

[0072] An organic antibacterial down jacket synergistically formulated with polyhalogenamines and quaternary ammonium salts includes an antibacterial fabric woven from warp and weft yarns. The weft yarn is made of yarn model NFDY20D / 24F. The NFDY20D / 24F yarn is a fully stretched nylon filament with a high F-number and fine individual fibers, ensuring the fabric has an extremely soft feel. The warp yarn is made of organic antibacterial yarn containing the antibacterial agent SiO2@NDA-Cl. The organic antibacterial yarn is of yarn model NDTY20D / 12F. The NDTY20D / 12F yarn is a 20D nylon elastic yarn that ensures the antibacterial fabric has a certain degree of elasticity in the weft direction, resulting in an extremely comfortable feel for the antibacterial fabric as a whole. It is worth noting that in actual application, technicians in this field can choose to set the warp yarn to organic antibacterial yarn and the weft yarn to ordinary yarn according to actual antibacterial needs; or set both the warp yarn and the weft yarn to organic antibacterial yarn.

[0073] The preparation method of the organic antibacterial yarn comprises the following steps:

[0074] (1) An antimicrobial agent, SiO2@NDA-Cl, is added to nylon slices to prepare a nylon antimicrobial masterbatch; the antimicrobial agent, SiO2@NDA-Cl, is present in the nylon antimicrobial masterbatch at a mass ratio of 30%. In actual applications, the mass ratio of the antimicrobial agent, SiO2@NDA-Cl, in the nylon antimicrobial masterbatch is not limited to the aforementioned 30%, and a person skilled in the art can determine the specific mass percentage based on actual needs.

[0075] (2) Adding the antibacterial masterbatch to nylon yarn to obtain an organic antibacterial yarn. The antibacterial masterbatch content in the organic antibacterial yarn is 3.0% by weight. In actual applications, the antibacterial masterbatch content in the organic antibacterial yarn is not limited to the above 3.0% by weight. Those skilled in the art can determine the specific mass percentage content according to actual needs.

[0076] The synthesis process of the antibacterial agent SiO2@NDA-Cl is as follows:

[0077] A. Synthetic terpolymer NDA

[0078] The terpolymer NDA is synthesized by reacting a polyhalogenamine precursor, a cationic quaternary ammonium salt, and acrylic acid. The reaction formula is as follows:

[0079]

[0080] B. Synthetic antibacterial agent SiO2@NDA-Cl

[0081] Tetraethoxysilane and 3-aminopropyltriethoxysilane are used to generate NH2-SiO2 through a sol-gel method. Then, NH2-SiO2 and the terpolymer NDA are subjected to an amidation reaction to generate SiO2@NDA. Finally, the antibacterial agent SiO2@NDA-Cl is obtained through chlorination. The specific reaction process is shown below:

[0082]

[0083] The antibacterial fabric comprises an inner layer and an outer layer. In order to ensure the down-proof performance of the inner layer of the antibacterial fabric, the inner layer is coated with a layer of moisture-permeable down-proof glue.

[0084] The method for preparing the organic antibacterial down jacket synergistically prepared with polyhalogenamines and quaternary ammonium salts described in this embodiment is the same as the method for preparing the organic antibacterial down jacket synergistically prepared with polyhalogenamines and quaternary ammonium salts described in Example 1. This embodiment differs from Example 1 in that the content of the antibacterial agent SiO2@NDA-Cl in the nylon antibacterial masterbatch is different, the content of the antibacterial masterbatch in the organic antibacterial yarn is different, and the warp and weft yarns are swapped.

[0085] Comparative Example 1

[0086] Ordinary down jacket fabrics sold on the market without added antibacterial materials.

[0087] Comparative Example 2

[0088] Down jacket fabrics with inorganic antibacterial materials added are available on the market.

[0089] Antibacterial testing

[0090] The antibacterial properties of the down jacket fabrics obtained in Examples 1-2 and Comparative Examples 1-2 were tested, and the test results are shown in the following table, where the test data in the table are the concentrations of viable bacteria in each Example and Comparative Example after 0 h or 18 h of contact with each microbial bacteria, in cfu / mL.

[0091] Table 1 Antibacterial performance test results

[0092]

[0093] From the test data in the above table, it can be seen that the organic antibacterial down jacket using polyhalamine and quaternary ammonium salt in synergy has a very good antibacterial effect, with an inhibition rate of 99% against Staphylococcus aureus, Escherichia coli, Klebsiella pneumoniae, and Pseudomonas aeruginosa, and an inhibition rate of 98% against Candida albicans.

[0094] Finally, it should be noted that these embodiments are intended only to illustrate the present invention and do not limit its scope. Furthermore, those skilled in the art will readily appreciate that other variations or modifications based on the above description are possible. It is not necessary and impossible to enumerate all embodiments here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. An organic antibacterial down jacket with synergistic effects of polyhalamine and quaternary ammonium salt, characterized by: The antibacterial fabric is woven with warp yarn and weft yarn, wherein either one of the warp yarn and the weft yarn or both of the warp yarn and the weft yarn are organic antibacterial yarns; the organic antibacterial yarn contains the antibacterial agent SiO2@NDA-Cl; The synthesis process of the antibacterial agent SiO2@NDA-Cl is as follows: A. Synthetic terpolymer NDA The terpolymer NDA is synthesized by reacting a polyhalogenamine precursor, a cationic quaternary ammonium salt, and acrylic acid. The reaction formula is as follows: B. Synthetic antibacterial agent SiO2@NDA-Cl Tetraethoxysilane and 3-aminopropyltriethoxysilane are used to generate NH2-SiO2 through a sol-gel method. Then, NH2-SiO2 and the terpolymer NDA are subjected to an amidation reaction to generate SiO2@NDA. Finally, the antibacterial agent SiO2@NDA-Cl is obtained through chlorination. The specific reaction process is shown below:

2. The organic antibacterial down jacket comprising polyhalogenamine and quaternary ammonium salt according to claim 1, characterized in that: The antibacterial fabric comprises an inner layer and an outer layer, and the inner layer is coated with a layer of moisture-permeable and down-proof glue.

3. The organic antibacterial down jacket comprising polyhalogenamine and quaternary ammonium salt according to claim 1, characterized in that: The warp yarn is a yarn with a model of N FDY 20D / 24F, and the weft yarn is an organic antibacterial yarn, and the yarn model of the organic antibacterial yarn is N DTY 20D / 12F.

4. The organic antibacterial down jacket comprising polyhalogenamine and quaternary ammonium salt according to claim 1, characterized in that: The preparation method of the organic antibacterial yarn comprises the following steps: (1) Adding the antibacterial agent SiO2@NDA-Cl into nylon chips to prepare nylon antibacterial masterbatch; (2) Add antibacterial masterbatch to nylon yarn to obtain organic antibacterial yarn.

5. The organic antibacterial down jacket comprising polyhalogenamine and quaternary ammonium salt according to claim 4, characterized in that: The content of the antibacterial agent SiO2@NDA-Cl in the nylon antibacterial masterbatch is 20% to 30% by mass.

6. The organic antibacterial down jacket comprising polyhalogenamine and quaternary ammonium salt according to claim 4, characterized in that: The content of the antibacterial masterbatch in the organic antibacterial yarn is 1.5% to 3.0% by mass.

7. An antibacterial fabric for down jackets with a synergistic effect of polyhalamine and quaternary ammonium salt, characterized by: The yarn is woven with warp yarn and weft yarn, wherein either one of the warp yarn and the weft yarn or both of the warp yarn and the weft yarn are organic antibacterial yarns; the organic antibacterial yarn contains the antibacterial agent SiO2@NDA-Cl; The synthesis process of the antibacterial agent SiO2@NDA-Cl is as follows: A. Synthetic terpolymer NDA The terpolymer NDA is synthesized by reacting a polyhalogenamine precursor, a cationic quaternary ammonium salt, and acrylic acid. The reaction formula is as follows: B. Synthetic antibacterial agent SiO2@NDA-Cl Tetraethoxysilane and 3-aminopropyltriethoxysilane are used to generate NH2-SiO2 through a sol-gel method. Then, NH2-SiO2 and the terpolymer NDA are subjected to an amidation reaction to generate SiO2@NDA. Finally, the antibacterial agent SiO2@NDA-Cl is obtained through chlorination. The specific reaction process is shown below:

8. A method for preparing an organic antibacterial down jacket comprising a polyhalogenamine and a quaternary ammonium salt as claimed in any one of claims 1 to 6, characterized in that: The steps include: Step a: weaving antibacterial grey cloth; Step b: Desizing and refining Refined antibacterial fabric is obtained by removing the slurry and oil agent from the antibacterial grey fabric; Step c: Dyeing and setting The antibacterial fabric is obtained by dyeing and setting the refined antibacterial fabric with acid dye; Step d: Plate making According to the designed style drawings, make plates and labels, and print paper patterns; Step e: Cropping Cut the antibacterial fabric according to the paper pattern in step d to obtain garment pieces; Step f: Sewing and ironing Sewing and ironing the garment pieces and accessories in step e to form an organic antibacterial down jacket prepared by synergizing multi-halogenamine and quaternary ammonium salt; Wherein, the antibacterial grey cloth in step a comprises warp yarn and weft yarn, and either or both of the warp yarn and the weft yarn are organic antibacterial yarns; and the organic antibacterial yarns contain the antibacterial agent SiO2@NDA-Cl.

9. The method for preparing an organic antibacterial down jacket with synergistic effects of polyhalamine and quaternary ammonium salt according to claim 8, characterized in that: In the step c, the inner layer of the obtained antibacterial fabric is coated with a layer of moisture-permeable and down-proof glue.

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