Antibacterial down feather and preparation method thereof

Abstract

The invention discloses antibacterial down feather and a preparation method thereof, the antibacterial down feather comprises modified degreased down feather, polyester fiber and flax, and the preparation method comprises the steps of raw material preparation, modified material preparation, down feather modification degreasing, down feather cleaning, mixing and finished product obtaining. According to the method, the biological enzyme and the chemical reagent are combined to modify and degrease the down feather, strong corrosion hazards of strong alkali and strong acid are avoided, the biological enzyme and the chemical reagent work cooperatively, damage to a down feather fiber structure is reduced to the maximum extent, and the prepared antibacterial down feather is good in filling power and has water resistance, antistatic property and antibacterial property.

Description

Technical Field

[0001] The invention belongs to the field of down fabrics, and in particular relates to antibacterial down and a preparation method thereof. Background Art

[0002] As a high-quality thermal insulation filling material, down is widely used in the textile and clothing industry. Its unique three-dimensional structure enables it to store a large amount of air and form a good thermal insulation layer, thus having excellent thermal insulation performance. Compared with many traditional thermal insulation materials, it can provide better thermal insulation effect at the same weight. However, natural down has some inherent defects. Down absorbs various impurities during growth and processing, among which oil components are particularly prominent. These oils not only affect the appearance of down, making it look not white and beautiful, but also hinder the storage and circulation of air between down fibers, seriously reducing its thermal insulation performance. In addition, down has strong water absorption and is easy to absorb moisture in a humid environment. Once it absorbs moisture, the down will clump, resulting in a significant reduction in its fluffiness, which greatly weakens its thermal insulation ability. In addition, a humid environment is prone to the growth of microorganisms such as bacteria and mold, producing unpleasant odors, and may even cause health problems such as human allergies.

[0003] In the traditional down processing technology, degreasing is a key step, and the methods used also have significant defects. The degreasing methods mostly use reagents such as strong alkali or strong acid, but these methods have obvious disadvantages. Strong alkali and strong acid can easily damage the down fibers, reduce the fiber strength, and thus shorten the service life of down products. Summary of the invention

[0004] The present invention aims to solve the problems of the prior art and provides an antibacterial down and a preparation method thereof. The specific technical scheme is as follows:

[0005] In one aspect, the present invention provides an antibacterial down, comprising the following components by weight:

[0006] 65-80 parts of modified defatted down;

[0007] 15-25 parts of polyester fiber;

[0008] 5-10 parts flax;

[0009] The modified defatted down is a product of down modified by a modifier, wherein the modifier is a neutral solvent prepared by mixing lipase, protease, amylase, nano-silver antibacterial agent, fatty alcohol polyoxyethylene ether, dimethyl silicone oil, vitamin C, phosphate buffered saline solution and water.

[0010] As an improvement of the above technical solution, the above modifier includes the following components in parts by weight:

[0011] Lipase 0.4-2 parts;

[0012] Protease 0.2-1 part;

[0013] Amylase 0.1-0.5 parts;

[0014] Nano silver antibacterial agent 0.1-0.5 parts;

[0015] 0.5-2 parts of fatty alcohol polyoxyethylene ether;

[0016] Dimethyl silicone oil 0.1-1 part;

[0017] Vitamin C 0.1-0.5 parts;

[0018] 30-50 parts of phosphate buffered saline;

[0019] 50-80 parts of water.

[0020] In another aspect, the present invention provides a method for preparing antibacterial down, which specifically comprises the following steps:

[0021] S1. Raw material preparation: Select fresh down raw materials, remove the hair stems, put them into a cleaning machine, add cleaning solution, wash and rinse until the residual cleaning solution is removed, and then dry;

[0022] S2. Preparation of modified materials: add lipase, protease and amylase into water at a mass ratio of 4:2:1, and add fatty alcohol polyoxyethylene ether, dimethyl silicone oil, vitamin C and phosphate buffer solution in proportion, and mix well;

[0023] S3, down modification and degreasing: adding the down treated in step S1 to the solvent mixed evenly in step S2 for modification and degreasing, with the temperature controlled at 50 degrees Celsius and the time controlled at 2 hours;

[0024] S4, down cleaning: rinse the down treated in step S3 in clean water at 30-40°C for 3-5 times and then dry;

[0025] S5, mixing: uniformly mixing the modified defatted down obtained in step S4 with polyester fiber and flax according to weight, and sterilizing with ultraviolet light;

[0026] S6, finished product: spray deodorant on the mixed antibacterial down treated in step S5, dry naturally, spray antistatic agent again, dry naturally, spray waterproofing agent again and dry to obtain the antibacterial down finished product.

[0027] As an improvement of the above technical solution, the cleaning solution in step S1 is a cleaning solution with a fatty alcohol polyoxyethylene ether concentration of 1%, and the washing temperature is 30-40°C.

[0028] As an improvement of the above technical solution, the drying temperature in step S1 is 40° C. and the time is 1-1.5 h; the drying temperature after spraying the waterproofing agent in step S6 is 60-90° C. and the time is 0.5-1 h.

[0029] Compared with the prior art, the beneficial effects of the present invention are:

[0030] (1) The present invention adopts biological enzymes and chemical reagents to modify and degrease the down, avoiding the strong corrosive hazards of strong alkali and strong acid. The two work together to minimize the damage to the fiber structure of the down. The antibacterial down obtained has good fluffiness and is water-resistant, antistatic and antibacterial.

[0031] (2) When the neutral modified solution is used for degreasing and modifying down, the enzyme can remove the grease, protein and starch on the surface of the down, and the silver ions can better contact the down fibers, be evenly distributed and exert an antibacterial effect. Vitamin C can ensure the activity of the enzyme, fatty alcohol polyoxyethylene ether can improve the contact effect between the enzyme and the down, dimethyl silicone oil is mainly used to improve the feel of the down, and phosphate buffered saline solution is used to maintain the pH value of the solution to keep it neutral. The modified solution with this matching ratio can not only improve the performance of the down, but also reduce the damage of the solvent itself to the down. The prepared antibacterial down has a better warming effect.

[0032] (3) The modified defatted down in the antibacterial down of the present invention retains the good thermal insulation performance of the down itself; flax has natural antibacterial properties and breathability, which allows air to circulate inside the fabric, which helps to dissipate moisture generated by the human body and improve the comfort of wearing or using; polyester fiber has high strength and wear resistance, which can increase the durability of the product, and it has certain anti-wrinkle properties. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0034] The chemical and biological raw materials used in the present invention can all be purchased from the market and will not have a significant impact on the results.

[0035] Embodiment 1

[0036] An antibacterial down, comprising the following components by weight: 65 parts of modified defatted down; 25 parts of polyester fiber; 10 parts of flax; the modified defatted down is a product of down modified by a modifier, and the modifier is a solvent prepared by mixing lipase, protease, amylase, nano-silver antibacterial agent, fatty alcohol polyoxyethylene ether, dimethyl silicone oil, vitamin C, phosphate buffered saline solution and water. The components of the modifier are counted by weight: 0.4 parts of lipase; 0.2 parts of protease; 0.1 parts of amylase; 0.1 parts of nano-silver antibacterial agent; 0.5 parts of fatty alcohol polyoxyethylene ether; 0.1 parts of dimethyl silicone oil; 0.1 parts of vitamin C; 30 parts of phosphate buffered saline solution; 70 parts of water;

[0037] A method for preparing antibacterial down comprises the following steps:

[0038] S1. Raw material preparation: Select fresh down raw materials, remove the hair stems, put them into a cleaning machine, add a cleaning solution with a concentration of 1% fatty alcohol polyoxyethylene ether, wash and rinse at 36°C until the residual cleaning solution is removed, and then dry at a drying temperature of 40°C for 1.5 hours;

[0039] S2. Preparation of modified materials: add lipase, protease and amylase into water at a mass ratio of 4:2:1, and add fatty alcohol polyoxyethylene ether, dimethyl silicone oil, vitamin C and phosphate buffer solution in proportion, and mix well;

[0040] S3, down modification and degreasing: adding the down treated in step S1 to the solvent mixed evenly in step S2 for modification and degreasing, with the temperature controlled at 50 degrees Celsius and the time controlled at 2 hours;

[0041] S4, down cleaning: rinse the down treated in step S3 in 40° C. clean water for 5 times and then dry;

[0042] S5, mixing: uniformly mixing the modified defatted down obtained in step S4 with polyester fiber and flax according to weight, and sterilizing with ultraviolet light;

[0043] S6, finished product: spray deodorant on the mixed antibacterial down treated in step S5, dry naturally, spray antistatic agent again, dry naturally, spray waterproofing agent again and dry at 70° C. for 1 hour to obtain the antibacterial down finished product.

[0044] Embodiment 2

[0045] An antibacterial down, comprising the following components by weight: 80 parts of modified defatted down; 15 parts of polyester fiber; 5 parts of flax; the modified defatted down is a product of down modified by a modifier, and the modifier is a solvent prepared by mixing lipase, protease, amylase, nano-silver antibacterial agent, fatty alcohol polyoxyethylene ether, dimethyl silicone oil, vitamin C, phosphate buffered saline solution and water. The components of the modifier are counted by weight: 2 parts of lipase; 1 part of protease; 0.5 parts of amylase; 0.5 parts of nano-silver antibacterial agent; 2 parts of fatty alcohol polyoxyethylene ether; 1 part of dimethyl silicone oil; 0.5 parts of vitamin C; 30 parts of phosphate buffered saline solution; 50 parts of water;

[0046] A method for preparing antibacterial down comprises the following steps:

[0047] S1. Raw material preparation: Select fresh down raw materials, remove the hair stems, put them into a cleaning machine, add a cleaning solution with a concentration of 1% fatty alcohol polyoxyethylene ether, wash and rinse at 36°C until the residual cleaning solution is removed, and then dry at a drying temperature of 40°C for 1.5 hours;

[0048] S2. Preparation of modified materials: add lipase, protease and amylase into water at a mass ratio of 4:2:1, and add fatty alcohol polyoxyethylene ether, dimethyl silicone oil, vitamin C and phosphate buffer solution in proportion, and mix well;

[0049] S3, down modification and degreasing: adding the down treated in step S1 to the solvent mixed evenly in step S2 for modification and degreasing, with the temperature controlled at 50 degrees Celsius and the time controlled at 2 hours;

[0050] S4, down cleaning: rinse the down treated in step S3 in 40° C. clean water for 5 times and then dry;

[0051] S5, mixing: uniformly mixing the modified defatted down obtained in step S4 with polyester fiber and flax according to weight, and sterilizing with ultraviolet light;

[0052] S6, finished product: spray deodorant on the mixed antibacterial down treated in step S5, dry naturally, spray antistatic agent again, dry naturally, spray waterproofing agent again and dry at 70° C. for 1 hour to obtain the antibacterial down finished product.

[0053] Embodiment 3

[0054] An antibacterial down, comprising the following components by weight: 72 parts of modified defatted down; 20 parts of polyester fiber; 8 parts of flax; the modified defatted down is a product of down modified by a modifier, the modifier being a solvent prepared by mixing lipase, protease, amylase, nano-silver antibacterial agent, fatty alcohol polyoxyethylene ether, dimethyl silicone oil, vitamin C, phosphate buffered saline solution and water. The components of the modifier are counted by weight: 1 part of lipase; 0.5 parts of protease; 0.25 parts of amylase; 0.5 parts of nano-silver antibacterial agent; 1.5 parts of fatty alcohol polyoxyethylene ether; 0.5 parts of dimethyl silicone oil; 0.3 parts of vitamin C; 30 parts of phosphate buffered saline solution; 50 parts of water;

[0055] A method for preparing antibacterial down comprises the following steps:

[0056] S1. Raw material preparation: Select fresh down raw materials, remove the hair stems, put them into a cleaning machine, add a cleaning solution with a concentration of 1% fatty alcohol polyoxyethylene ether, wash and rinse at 36°C until the residual cleaning solution is removed, and then dry at a drying temperature of 40°C for 1.5 hours;

[0057] S2. Preparation of modified materials: add lipase, protease and amylase into water at a mass ratio of 4:2:1, and add fatty alcohol polyoxyethylene ether, dimethyl silicone oil, vitamin C and phosphate buffer solution in proportion, and mix well;

[0058] S3, down modification and degreasing: adding the down treated in step S1 to the solvent mixed evenly in step S2 for modification and degreasing, with the temperature controlled at 50 degrees Celsius and the time controlled at 2 hours;

[0059] S4, down cleaning: rinse the down treated in step S3 in 40° C. clean water for 5 times and then dry;

[0060] S5, mixing: uniformly mixing the modified defatted down obtained in step S4 with polyester fiber and flax according to weight, and sterilizing with ultraviolet light;

[0061] S6, finished product: spray deodorant on the mixed antibacterial down treated in step S5, dry naturally, spray antistatic agent again, dry naturally, spray waterproofing agent again and dry at 70° C. for 1 hour to obtain the antibacterial down finished product.

[0062] Comparative Example 1

[0063] An antibacterial down, comprising the following components by weight: 50 parts of modified defatted down; 35 parts of polyester fiber; 15 parts of flax; the modified defatted down is a product of down modified by a modifier, and the modifier is a solvent prepared by mixing lipase, protease, amylase, nano-silver antibacterial agent, fatty alcohol polyoxyethylene ether, dimethyl silicone oil, vitamin C, phosphate buffered saline solution and water. The components of the modifier are counted by weight: 3 parts of lipase; 0.1 parts of protease; 0.05 parts of amylase; 0.05 parts of nano-silver antibacterial agent; 0.3 parts of fatty alcohol polyoxyethylene ether; 0.05 parts of dimethyl silicone oil; 0.05 parts of vitamin C; 15 parts of phosphate buffered saline solution; 85 parts of water;

[0064] A method for preparing antibacterial down comprises the following steps:

[0065] S1. Raw material preparation: Select fresh down raw materials, remove the hair stems, put them into a cleaning machine, add a cleaning solution with a concentration of 1% fatty alcohol polyoxyethylene ether, wash and rinse at 36°C until the residual cleaning solution is removed, and then dry at a drying temperature of 40°C for 1.5 hours;

[0066] S2. Preparation of modified materials: Add the enzyme into water, and add fatty alcohol polyoxyethylene ether, dimethyl silicone oil, vitamin C and phosphate buffered saline solution in proportion, and mix well;

[0067] S3, down modification and degreasing: adding the down treated in step S1 to the solvent mixed evenly in step S2 for modification and degreasing, with the temperature controlled at 50 degrees Celsius and the time controlled at 2 hours;

[0068] S4, down cleaning: rinse the down treated in step S3 in 40° C. clean water for 5 times and then dry;

[0069] S5, mixing: uniformly mixing the modified defatted down obtained in step S4 with polyester fiber and flax according to weight, and sterilizing with ultraviolet light;

[0070] S6, finished product: spray deodorant on the mixed antibacterial down treated in step S5, dry naturally, spray antistatic agent again, dry naturally, spray waterproofing agent again and dry at 70° C. for 1 hour to obtain the antibacterial down finished product.

[0071] Comparative Example 2

[0072] An antibacterial down, comprising the following components by weight: 90 parts of modified defatted down; 8 parts of polyester fiber; 2 parts of flax; the modified defatted down is a product of down modified by a modifier, and the modifier is a solvent prepared by mixing lipase, protease, amylase, nano-silver antibacterial agent, fatty alcohol polyoxyethylene ether, dimethyl silicone oil, vitamin C, phosphate buffered saline solution and water. The components of the modifier are counted by weight: 0.1 parts of lipase; 0.1 parts of protease; 0.6 parts of amylase; 0.05 parts of nano-silver antibacterial agent; 3 parts of fatty alcohol polyoxyethylene ether; 2 parts of dimethyl silicone oil; 2 parts of vitamin C; 60 parts of phosphate buffered saline solution; 40 parts of water;

[0073] A method for preparing antibacterial down comprises the following steps:

[0074] S1. Raw material preparation: Select fresh down raw materials, remove the hair stems, put them into a cleaning machine, add a cleaning solution with a concentration of 1% fatty alcohol polyoxyethylene ether, wash and rinse at 36°C until the residual cleaning solution is removed, and then dry at a drying temperature of 40°C for 1.5 hours;

[0075] S2. Preparation of modified materials: Add the enzyme into water, and add fatty alcohol polyoxyethylene ether, dimethyl silicone oil, vitamin C and phosphate buffered saline solution in proportion, and mix well;

[0076] S3, down modification and degreasing: adding the down treated in step S1 to the solvent mixed evenly in step S2 for modification and degreasing, with the temperature controlled at 50 degrees Celsius and the time controlled at 2 hours;

[0077] S4, down cleaning: rinse the down treated in step S3 in 40° C. clean water for 5 times and then dry;

[0078] S5, mixing: uniformly mixing the modified defatted down obtained in step S4 with polyester fiber and flax according to weight, and sterilizing with ultraviolet light;

[0079] S6, finished product: collect the mixture treated in step S5 to obtain an antibacterial down finished product.

[0080] The antibacterial performance and thermal insulation performance of the finished down products of each embodiment were tested. The antibacterial performance testing method was based on GB / T20944.3-2008 and FZ / T 80001-2002, and the thermal insulation performance testing method was based on GB / T12705-2008. The test results are shown in Table 1.

[0081]

[0082] As can be seen from Table 1, the antibacterial down prepared by the method of the present invention has good antibacterial performance and thermal insulation performance. Its antibacterial performance and antibacterial performance after washing 30 times are slightly higher than those of commercially available products. This is mainly because the biological enzyme and chemical reagent are used to modify and degrease the down, avoiding the strong corrosive hazards of strong alkali and strong acid. The two work together to minimize the damage to the fiber structure of the down. The obtained antibacterial down has good fluffiness, water resistance, antistatic and antibacterial properties. At the same time, after the degreasing and modification of the down, this product is disinfected and sterilized by ultraviolet light again, and finally a deodorant and a waterproofing agent are sprayed to reduce the influence of moisture in the later stage on the growth of bacteria in the down. At the same time, the addition of flax, a natural antibacterial material, increases the antibacterial effect.

[0083] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An antibacterial down, characterized in that: The composition comprises the following components by weight: 65-80 parts of modified defatted down; 15-25 parts of polyester fiber; 5-10 parts flax; The modified defatted down is a product of down modified by a modifier, wherein the modifier is a solvent prepared by mixing lipase, protease, amylase, nano-silver antibacterial agent, fatty alcohol polyoxyethylene ether, dimethyl silicone oil, vitamin C, phosphate buffered saline solution and water.

2. The antibacterial down according to claim 1, characterized in that: The modifier comprises the following components by weight: Lipase 0.4-2 parts; Protease 0.2-1 part; 0.1-0.5 parts of amylase; Nano silver antibacterial agent 0.1-0.5 parts; 0.5-2 parts of fatty alcohol polyoxyethylene ether; Dimethyl silicone oil 0.1-1 part; Vitamin C 0.1-0.5 parts; 30-50 parts of phosphate buffered saline; 50-80 parts of water.

3. A method for preparing the antibacterial down according to claim 1 or 2, characterized in that: The following steps are involved: S1. Raw material preparation: Select fresh down raw materials, remove the hair stems, put them into a cleaning machine, add cleaning solution, wash and rinse until the residual cleaning solution is removed, and then dry; S2. Preparation of modified materials: add lipase, protease and amylase into water at a mass ratio of 4:2:1, and add fatty alcohol polyoxyethylene ether, dimethyl silicone oil, vitamin C and phosphate buffer solution in proportion, and mix well; S3, down modification and degreasing: adding the down treated in step S1 to the solvent mixed evenly in step S2 for modification and degreasing, with the temperature controlled at 50 degrees Celsius and the time controlled at 2 hours; S4, down cleaning: rinse the down treated in step S3 in clean water at 30-40° C. for 3-5 times and then dry; S5, mixing: uniformly mixing the modified defatted down obtained in step S4 with polyester fiber and flax according to weight, and sterilizing with ultraviolet light; S6, finished product: spray deodorant on the mixed antibacterial down treated in step S5, dry naturally, spray antistatic agent again, dry naturally, spray waterproofing agent again and dry to obtain the antibacterial down finished product.

4. A method for preparing antibacterial down according to claim 3, characterized in that: The cleaning solution in step S1 is a cleaning solution with a concentration of 1% of fatty alcohol polyoxyethylene ether, and the washing temperature is 30-40°C.

5. A method for preparing antibacterial down according to claim 3, characterized in that: The drying temperature in step S1 is 40° C. and the time is 1-1.5 h; the drying temperature after spraying the waterproofing agent in step S6 is 60-90° C. and the time is 0.5-1 h.

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