Antibacterial warm-keeping down-like fabric and preparation method thereof

Abstract

The application discloses an antibacterial and warm fake down fabric and a preparation method thereof, which comprises an antibacterial surface layer, a fake down warm middle layer and a soybean protein fiber inner layer, and the fake down warm middle layer is composed of a warm top layer, a fake down layer and a warm bottom layer. The fabric has excellent antibacterial performance, and the sterilization rate of the fabric on staphylococcus aureus and escherichia coli reaches 100% within 5 min. The fibers in the fake down layer cross each other to form a porous and fluffy structure with a large porosity, a large air interval, more stored static air, stored heat and prevented heat overflow, and the warm performance is improved. The fabric has the characteristics of antibacterial and warm performance, good comfort and good elasticity.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of fiber processing, and particularly relates to an antibacterial and warm imitation down fabric and a preparation method thereof. BACKGROUND

[0002] Natural down has the characteristics of light weight, softness, loftiness, good warmth retention, etc., and is an excellent natural warm material, which has been widely used in the fields of clothing, hats, bedding, outdoor products, etc. However, due to the avian influenza epidemic and the increase in the collection and processing cost of natural down, the price of finished natural down is relatively high. In addition, natural down has the problems of non-ecological production process, easy to drill down in use, significant decrease in warmth retention after being wet, easy to adhere to bacteria, etc. Therefore, it has a broad application prospect to develop an imitation down antibacterial and warm material which has comprehensive performance close to natural down and can avoid the defects of natural down.

[0003] The imitation down warm material refers to a general term of fiber materials with different shapes and excellent warmth retention, which are manufactured by physical and chemical methods according to the characteristics of natural down. The N-halamine antibacterial material has high efficiency, broad spectrum and renewable antibacterial effect, contains N-H bonds in the molecular structure, and through the oxidation of sodium hypochlorite, the N-H bonds are converted into N-X bonds, which has strong oxidizing property and thus inactivates bacteria. The dopamine molecular structure with good adhesion has N-H groups, so that it has good antibacterial performance after chlorination. It has important significance to prepare an imitation down fabric with excellent antibacterial, warm and low cost by studying the imitation down material and combining the antibacterial effect of N-halamine. SUMMARY

[0004] The purpose of the present application is to provide an antibacterial and warm imitation down fabric and a preparation method thereof to solve the problems in the background.

[0005] To achieve the above-mentioned purpose, the application adopts the following technical scheme:

[0006] An antibacterial and warm imitation down fabric comprises an antibacterial surface layer, an imitation down warm middle layer and a soy protein fiber inner layer, and the imitation down warm middle layer is composed of a warm top layer, an imitation down layer and a warm bottom layer.

[0007] Preferably, the imitation down layer is prepared by using polypropylene, quaternized chitosan, methacrylamide and methylene bisacrylamide to prepare an imitation down aerogel.

[0008] Preferably, the ratio of polypropylene, quaternized chitosan, methacrylamide and methylene bisacrylamide is (20-30):(2-4):(1-3):(0.05-0.1).

[0009] Preferably, the warm top layer and the warm bottom layer are made of high-density fabric, which is 150 dtex superfine denier fiber fabric with a density of 600-700 roots / 10 cm.

[0010] A preparation method of an antibacterial warm down feather-like fabric, comprising the following steps:

[0011] S1, preparing an antibacterial surface layer, immersing cotton fabric in dopamine for treatment, drying, chlorinating the treated cotton fabric with 10% sodium hypochlorite, and finally fully washing and drying, wherein the concentration of dopamine in step S1 is 10%, the immersion treatment time is 10-20 min, and the chlorination time of sodium hypochlorite on the dopamine-treated cotton fabric is 10-30 min;

[0012] S2, preparing a down feather-like layer, cutting and crushing polypropylene fibers, then high-speed beating for 20-30 min at 10,000 rpm, then dispersing in 500 g deionized water, then adding a certain amount of quaternized chitosan to obtain a down feather-like fiber slurry, and the mass fraction of the slurry is 5-10%. The down feather-like slurry is aged at 30°C for 12 h to obtain a coagulum, then vacuum freeze-dried at a vacuum of 600 Pa and a temperature below 0°C for 10 h to remove water in the coagulum, and a pre-processed down feather-like structural fiber aerogel is obtained, then ultraviolet curing at 500 W for 3-5 min to form cross-linking points between the down feather-like fibers, so that the down feather-like structural fiber aerogel has good mechanical properties and compression resilience performance;

[0013] S3, preparing a warm top layer and a warm bottom layer, which are knitted from superfine denier fiber fabric;

[0014] S4, preparing a down feather-like warm middle layer, and the warm top layer, the down feather-like layer and the warm bottom layer are connected by sewing;

[0015] S5, preparing a soybean protein fiber inner layer, which is spun and woven from soybean protein fiber;

[0016] S6, preparing a finished product, the antibacterial surface layer, the down feather-like warm middle layer and the soybean protein fiber inner layer are connected by sewing.

[0017] The technical effects and advantages of the present application are as follows:

[0018] The antibacterial and warm imitation down fabric has N-halamine groups and quaternary ammonium chitosan, and the soybean protein fiber also has certain antibacterial effect, so that the fabric has excellent antibacterial performance, and the sterilization rate of the fabric on staphylococcus aureus and escherichia coli reaches 100% within 5 min. The fibers in the imitation down layer cross each other to form a porous and fluffy structure with a large number of pores, have a large air gap, store more stationary air, can store heat and prevent heat from overflowing, and improve the warm-keeping performance. The fabric has the characteristics of antibacterial and warm-keeping, good comfort, good elasticity and the like. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the application.

[0020] In the figure: 1, antibacterial surface layer; 2, imitation down warm middle layer; 21, warm top layer; 22, imitation down layer; 23, warm bottom layer; 3, soybean protein fiber inner layer. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the application will be described below with reference to the accompanying drawings. Figure 1 The technical solutions in the embodiments of the application will be described below with reference to the accompanying drawings. The described embodiments are only a part of the embodiments of the application, rather than all the embodiments. The specific embodiments described herein are only used to explain the application, and are not used to limit the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the application. Embodiment 1:

[0022] As Figure 1The application discloses an antibacterial and warm fake down fabric, which comprises an antibacterial surface layer 1, a fake down warm middle layer 2 and a soybean protein fiber inner layer 3. The fake down warm middle layer 2 is composed of a warm top layer 21, a fake down layer 22 and a warm bottom layer 23. The fake down layer 22 is prepared by using propylene, quaternary ammonium chitosan, methyl acrylamide and methylene bisacrylamide to prepare fake down aerogel. The antibacterial surface layer 1 is prepared by treating cotton fabric with 10% dopamine, drying, chlorinating with 10% sodium hypochlorite for 10 min and then fully washing and drying. The fake down warm middle layer 2 is composed of the warm top layer 21, the fake down layer 22 and the warm bottom layer 23. The fake down layer 22 is prepared by using propylene, quaternary ammonium chitosan, methyl acrylamide and methylene bisacrylamide in a proportion of 20:2:1:0.05 to prepare fake down aerogel. The propylene fibers are cut and broken, then are beaten by a high-speed beating method for 20 min at 10,000 rpm, then are dispersed in 500 g deionized water, and then quaternary ammonium chitosan is added to obtain a fake down fiber slurry, and the mass fraction of the slurry is 5%. The fake down slurry is aged at 30 DEG C for 12 h to obtain a coagulation block, then is freeze-dried at a vacuum degree of 600 Pa and a temperature below 0 DEG C for 10 h to remove water in the coagulation block, and then is cured by 500 W ultraviolet light for 3 min to form crosslinking points between the fake down fibers, so that the fake down structure fiber aerogel with good mechanical properties and compression resilience is obtained. The warm top layer 21 and the warm bottom layer 23 are prepared from high-density fabric, the high-density fabric is 150 dtex superfine denier fiber fabric with a density of 600 roots / 10 cm, the warm top layer 21, the fake down layer 22 and the warm bottom layer 23 are connected by sewing, and the soybean protein fiber inner layer 3 is spun and woven from soybean protein fibers; the antibacterial surface layer 1, the fake down warm middle layer 2 and the soybean protein fiber inner layer 3 are connected by sewing.

[0023] The antibacterial experiment is conducted on the antibacterial and warm fake down fabric of Example 1, reference antibacterial test is conducted on staphylococcus aureus and escherichia coli by AATCC100-1999 method for 5 min, and the antibacterial rates of the escherichia coli and the staphylococcus aureus can reach 100%. Example 2

[0024] An antibacterial and warm down-like fabric is composed of an antibacterial surface layer 1, a down-like warm middle layer 2 and a soy protein fiber inner layer 3. The antibacterial surface layer 1 is prepared by treating cotton fabric with 10% dopamine, drying, chlorinating with 10% sodium hypochlorite for 10 min, and finally washing and drying. The down-like warm middle layer 2 is composed of a warm top layer 21, a down-like layer 22 and a warm bottom layer 23. The down-like layer 22 is prepared by preparing a down-like aerogel from polypropylene, quaternary ammonium chitosan, methacrylamide and methylene bisacrylamide in a ratio of 25:4:2:0.05. The polypropylene fibers are cut and broken, then beaten at 10000 rpm for 20 min by high-speed beating, then dispersed in 500 g of deionized water, then quaternary ammonium chitosan is added to obtain a down-like fiber slurry with a mass fraction of 5%. The down-like slurry is aged at 30°C for 12 h to obtain a coagulum, then freeze-dried at a vacuum of 600 Pa and a temperature below 0°C for 10 h to remove water from the coagulum, and then pre-treated down-like structural fiber aerogel is obtained. The down-like fiber aerogel is then cured with 500 W ultraviolet light for 3 min to form cross-linking points between the down-like fibers, resulting in good mechanical properties and compression resilience, and obtaining down-like structural fiber aerogel. The warm top layer 21 and the warm bottom layer 23 are prepared from high-density fabric, and the high-density fabric is 150 dtex ultra-fine denier fiber fabric with a density of 600 roots / 10 cm.

[0025] An antibacterial experiment was conducted on an antibacterial and warm down-like fabric of Example 2. The antibacterial test was conducted according to AATCC100-1999 method for 5 min of contact with Staphylococcus aureus and Escherichia coli, and the antibacterial rates for both Escherichia coli and Staphylococcus aureus were 100%. Example 3:

[0026] An antibacterial and warm down-like fabric is composed of an antibacterial surface layer 1, a down-like warm middle layer 2 and a soy protein fiber inner layer 3. The antibacterial surface layer 1 is prepared by treating cotton fabric with 10% dopamine, drying, chlorinating with 10% sodium hypochlorite for 20 min, and finally washing and drying. The down-like warm middle layer 2 is composed of a warm top layer 21, a down-like layer 22 and a warm bottom layer 23. The down-like layer 22 is prepared by preparing a down-like aerogel from polypropylene, quaternary ammonium chitosan, methacrylamide and methylene bisacrylamide in a ratio of 20:3:2:0.05. The polypropylene fibers are cut and broken, then beaten at 10000 rpm for 20 min by high-speed beating, then dispersed in 500 g of deionized water, then quaternary ammonium chitosan is added to obtain a down-like fiber slurry with a mass fraction of 5%. The down-like slurry is aged at 30°C for 12 h to obtain a coagulum, then freeze-dried at a vacuum of 600 Pa and a temperature below 0°C for 10 h to remove water from the coagulum, and then pre-treated down-like structural fiber aerogel is obtained. The down-like fiber aerogel is then cured with 500 W ultraviolet light for 3 min to form cross-linking points between the down-like fibers, resulting in good mechanical properties and compression resilience. The down-like structural fiber aerogel is obtained. The warm top layer 21 and the warm bottom layer 23 are prepared from high-density fabric, and the high-density fabric is 150 dtex ultra-fine denier fiber fabric with a density of 700 roots / 10 cm.

[0027] An antibacterial experiment was conducted on an antibacterial and warm down-like fabric of Example 3. The antibacterial test was conducted according to AATCC100-1999 method for 5 min of contact with Staphylococcus aureus and Escherichia coli. The antibacterial rate of Escherichia coli and Staphylococcus aureus was 100%. Example 4:

[0028] An antibacterial warm and fluffy fabric is composed of an antibacterial surface layer 1, a warm and fluffy middle layer 2 and a soybean protein fiber inner layer 3. The antibacterial surface layer 1 is prepared by treating cotton fabric with 10% dopamine, drying, chlorinating with 10% sodium hypochlorite for 10 min, and finally washing and drying. The warm and fluffy middle layer 2 is composed of a warm top layer 21, a fluffy layer 22 and a warm bottom layer 23. The fluffy layer 22 is prepared by preparing a fluffy aerogel from polypropylene, quaternary ammonium chitosan, methacrylamide and methylene bisacrylamide at a ratio of 20:2:1:0.05. The polypropylene fiber is cut and broken, then it is beaten at 10,000 rpm for 30 min by high-speed beating, then it is dispersed in 500 g of deionized water, then quaternary ammonium chitosan is added to obtain a fluffy fiber slurry, and the mass fraction of the slurry is 10%. The fluffy slurry is aged at 30°C for 12 h to obtain a coagulation block, then it is freeze-dried at a vacuum degree of 600 Pa and a temperature below 0°C for 10 h to remove water in the coagulation block, and then it is cured by 500 W ultraviolet light for 3 min to form cross-linking points between the fluffy fibers, so that the fluffy structure fiber aerogel has good mechanical properties and compression resilience. The warm top layer 21 and the warm bottom layer 23 are prepared from high-density fabric, and the high-density fabric is 150 dtex superfine denier fiber fabric with a density of 600 roots / 10 cm.

[0029] An antibacterial experiment is conducted on the antibacterial warm and fluffy fabric of Example 4, and the antibacterial test is tested according to AATCC100-1999 method for 5 min for Staphylococcus aureus and Escherichia coli, and the antibacterial rates of Escherichia coli and Staphylococcus aureus can reach 100%.

[0030] In summary, the antibacterial warm and fluffy fabric has excellent antibacterial performance, and the bactericidal rates of Staphylococcus aureus and Escherichia coli can reach 100% within 5 min. The fibers in the fluffy layer cross each other to form a porous and fluffy structure with high porosity, have a large air gap, store more stationary air, can store heat and prevent heat from overflowing, and improve the warm-keeping performance. The fabric has the characteristics of antibacterial and warm-keeping, good comfort and good elasticity.

[0031] Finally, it should be noted that: the above is only the preferred embodiment of the present application, and is not used to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A method for preparing an antibacterial and warm down-like fabric, characterized in that, The prepared antibacterial and warm imitation down fabric includes an antibacterial outer layer, an imitation down warm middle layer and a soybean protein fiber inner layer. The imitation down warm middle layer is composed of a warm top layer, an imitation down layer and a warm bottom layer. The down-like layer is made of polypropylene, quaternized chitosan, methacrylamide and methylenebisacrylamide to prepare down-like aerogel; The thermal insulation top layer and thermal insulation bottom layer are made of high-density fabric, which is a 150 dtex ultrafine denier fiber fabric with a density of 600-700 threads / 10 cm. Specifically, the preparation steps include the following: S1. To prepare an antibacterial surface layer, cotton fabric is impregnated with dopamine, dried, chlorinated with 10% sodium hypochlorite, and finally thoroughly washed and dried. S2. Preparation of the down-like layer: Polypropylene fibers are cut and broken down, and then pulped at 10,000 rpm for 20-30 min using a high-speed pulping method. The pulp is then dispersed in 500 g of deionized water, and quaternized chitosan is added to obtain a down-like fiber slurry with a mass fraction of 5-10%. The down-like slurry is aged at 30℃ for 12 h to obtain a solid block. The solid block is then freeze-dried at 600 Pa and below 0℃ for 10 h to remove water from the solid block, resulting in a pretreated down-like structural fiber aerogel. The aerogel is then cured with 500 W of ultraviolet light for 3-5 min to form cross-linking points between the down-like fibers, thus obtaining the down-like structural fiber aerogel. S3. Prepare the thermal insulation top layer and thermal insulation bottom layer, which are woven from microfiber fabric; S4. Prepare the down-like insulation middle layer, and connect the top insulation layer, the down-like layer and the bottom insulation layer by stitching. S5. Prepare the inner layer of soybean protein fiber, which is made of soybean protein fiber through spinning and weaving; S6. Prepare the finished product, with the antibacterial outer layer, the down-like warm middle layer, and the soybean protein fiber inner layer connected by stitching. In step S1, the concentration of dopamine is 10%, the immersion time is 10-20 min, and the chlorination time of the cotton fabric treated with dopamine by sodium hypochlorite is 10-30 min.

2. An antibacterial and warm down-like fabric, characterized in that: The antibacterial and warm imitation down fabric is prepared using the preparation method described in claim 1.

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