Antibacterial and radiation-proof fabric and preparation method thereof

Abstract

The present invention belongs to the technical field of fabrics, and specifically discloses an antibacterial and radiation-proof fabric and a preparation method thereof. The preparation method of the antibacterial and radiation-proof fabric is as follows: 40-50 parts by weight of modified seaweed fiber and 10-20 parts by weight of silver fiber are blended to obtain a blended yarn; the blended yarn is then woven to obtain a plain weave; the plain weave is immersed in a post-finishing liquid, soaked twice, rolled twice, baked, and then washed and dried after completion to obtain the antibacterial and radiation-proof fabric. The antibacterial and radiation-proof fabric of the present invention is soft and skin-friendly, and has good radiation protection performance and mildew and antibacterial performance.

Description

Technical Field

[0001] The invention belongs to the technical field of fabrics, and in particular relates to an antibacterial and radiation-proof fabric and a preparation method thereof. Background Art

[0002] Radiation-proof fabrics are usually made of metal wire fibers or metal-plated fibers and other fibers, which can effectively shield electromagnetic wave radiation, thereby reducing the harm of electromagnetic radiation pollution in the environment to human health. However, the above-mentioned radiation-proof fabrics also have some disadvantages, such as poor air permeability, poor washing resistance, easy shedding, easy oxidation, and relatively high cost.

[0003] Chinese patent CN103767083A discloses an electromagnetic wave radiation proof fabric and radiation proof clothing. The fabric is made of hemp fiber and / or cotton fiber and dyed with natural plant dyes. The natural plant dyes are extracted from comfrey and / or green persimmon. The fabric has good air permeability and has certain antibacterial and electromagnetic wave radiation proof functions. It can be used to replace existing metal wire or conductive coating type radiation proof clothing. The production cost is low and the method is simple. However, the radiation protection ability of the fabric is worse than that of metal fiber radiation proof fabrics, and its antibacterial and radiation protection abilities gradually decrease with the increase in the number of uses. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides an antibacterial and radiation-proof fabric and a preparation method thereof, wherein the fabric is made by blending and weaving modified seaweed fiber and silver fiber. The modified seaweed fiber is obtained by sequentially epoxidizing, ammoniation and grafting modification of seaweed fiber, and has the characteristics of radiation resistance, antibacterial, and comfort. Finally, the fabric is post-finished so that it can maintain good antibacterial and radiation-proof properties for a long time.

[0005] The technical solution adopted by the present invention is:

[0006] A method for preparing an antibacterial and radiation-proof fabric comprises the following steps:

[0007] (i) feeding 40-50 parts by weight of modified seaweed fiber and 10-20 parts by weight of silver fiber into a blending machine for blending to obtain blended yarn; weaving the blended yarn through a knitting weft knitting circular machine to obtain a plain woven fabric;

[0008] (ii) immersing the plain woven fabric in a finishing solution, performing double immersion and double rolling, baking, and then washing and drying to obtain the antibacterial and radiation-proof fabric.

[0009] Preferably, the grammage of the plain woven fabric is 120-150 g / m 2 ;

[0010] Preferably, the solid-liquid ratio of the plain woven fabric to the finishing liquid is 1kg:7-10L.

[0011] Preferably, the soaking temperature of the plain woven fabric is 27-33° C. and the soaking time is 30-40 min.

[0012] Preferably, the rolling rate is 90-95%.

[0013] Preferably, the baking temperature is 140-160° C. and the baking time is 20-50 seconds.

[0014] The invention uses modified seaweed fiber and silver fiber as raw materials to blend and manufacture the antibacterial and radiation-proof fabric, which combines the advantages of the above two fibers, is soft and comfortable, environmentally friendly and skin-friendly, and has good radiation protection performance and mildew and antibacterial performance.

[0015] Among them, silver fiber is obtained by chemical silver plating process with nylon fiber as the base material, and a dense and firm silver layer is formed on the fiber surface. Silver fiber maintains the softness and spinnability of the fiber itself, and can be blended with other fibers for production, and has good antibacterial, antistatic and radiation protection properties. Seaweed fiber is spun from materials extracted from natural seaweed in the ocean, and has good spinnability, hygroscopicity, biocompatibility and biodegradability. It is a new type of green and pollution-free fiber material. Seaweed fiber is skin-friendly and warm, and its comfort is better than long-staple cotton. The moisture regain is between 18-20%, and it is naturally mildew-proof and antibacterial, making it an ideal fiber raw material for clothing fabrics.

[0016] The present invention utilizes the hydroxyl active groups on the surface of the seaweed fiber, and sequentially undergoes epoxidation, amination and grafting modification to obtain modified seaweed fiber, which has the properties of radiation resistance, antibacterial, soft skin-friendly, washable, etc. The present invention improves the binding activity between fibers by introducing epoxy groups on the surface of the seaweed fiber, making it easier to introduce amino groups; then the pretreated seaweed fiber containing a large number of amino groups is obtained by amination with an amino treatment liquid, providing a large number of active groups for subsequent modification; finally, the pretreated seaweed fiber is grafted and modified with hesperidin, 1-aminocyclopropanecarboxylic acid and 5-amino-2,4,6-triiodoisophthaloyl chloride, so that these radiation-resistant active substances are firmly grafted onto the seaweed fiber through chemical bonds, covalent bonding, etc., giving it excellent radiation resistance.

[0017] Preferably, the preparation method of the modified seaweed fiber is:

[0018] X1. Add 10-20 parts by weight of seaweed fiber to 40-60 parts by weight of anhydrous ethanol and mix well, then add 10-15 parts by weight of epichlorohydrin, adjust the pH to 8-10, stir for 15-20 hours at 25-28° C. and 150-200 r / min, take out, wash and dry to obtain epoxidized seaweed fiber;

[0019] X2. Under nitrogen protection, add 8-12 parts by weight of diethylenetriamine in acetone solution to 30-50 parts by weight of ethylene glycol diacrylate in acetone solution, stir at 55-60° C. and 50-100 r / min for 40-60 min, add 400-500 parts by weight of water after the mixture is added, and ultrasonicate for 30-50 min to obtain an amino treatment solution; add the above-mentioned epoxidized seaweed fiber to the amino treatment solution, adjust the pH to 8-10, stir at 40-45° C. and 150-200 r / min for 6-10 h, take out, wash, and dry to obtain pretreated seaweed fiber;

[0020] X3. Under nitrogen protection, add 1-2 parts by weight of hesperidin, 1-2 parts by weight of 1-aminocyclopropanecarboxylic acid and 2-4 parts by weight of 5-amino-2,4,6-triiodoisophthaloyl chloride to 120-180 parts by weight of dimethyl sulfoxide and mix evenly to obtain an anti-radiation treatment solution; add the above-mentioned pretreated seaweed fiber to the anti-radiation treatment solution, stir for 2-3 hours at 25-28°C and 150-200r / min, take out, wash and dry to obtain modified seaweed fiber.

[0021] Preferably, the concentration of the diethylenetriamine acetone solution is 26-32 wt %.

[0022] Preferably, the concentration of the ethylene glycol diacrylate acetone solution is 12-16 wt %.

[0023] Preferably, the ultrasonic conditions are 20-35kHz, 300-500W.

[0024] Preferably, the solid-liquid ratio of the epoxidized seaweed fiber to the amino treatment liquid is 1kg:3-5L.

[0025] Preferably, the solid-to-liquid ratio of the pretreated seaweed fiber to the radiation-resistant treatment liquid is 1 kg:3-5 L.

[0026] After the egg is broken, the translucent white substance attached to the eggshell is the eggshell membrane. The eggshell membrane is composed of keratin, collagen, lipids, amino acids and polysaccharides. It is rich in active groups such as aldehyde groups. It is a three-dimensional mesh film structure with staggered connections between fibers and a porous structure similar to non-woven fabrics. These properties make the eggshell membrane powder have good film-forming properties and fixed adsorption effects. Treating the eggshell membrane with sodium periodate and liquid nitrogen can improve the spatial network structure of the eggshell membrane and improve the dispersibility and solubility of the eggshell membrane powder in the finishing liquid. Chitosan quaternary ammonium salt itself has certain antibacterial and film-forming properties, and can be used with eggshell membrane powder to form a protective film on the surface of the fabric.

[0027] The present invention arranges the fabric by treating eggshell membrane powder and chitosan quaternary ammonium salt, and utilizes the fiber mesh structure and good biocompatibility of the eggshell membrane powder to attach to the surface of silver fiber and modified seaweed fiber to form a coating, so as to reinforce and protect the nano silver and anti-radiation active substances on the fiber surface, improve the water washability and oxidation resistance of the antibacterial and radiation-proof fabric, and make the anti-radiation and antibacterial effects more durable.

[0028] In addition, dodecyl dimethyl betaine, as an amphoteric surfactant, can not only increase the stability of the finishing liquid, but also act as a softener and antistatic agent to finish the fabric. Sodium lignin sulfonate, as a dispersant, can make each component disperse evenly in the finishing liquid, so that the effect of each component can be optimized.

[0029] Preferably, the preparation method of the finishing liquid is:

[0030] The fresh egg shells are soaked in hydrochloric acid, and the egg shell membranes are separated after the calcium carbonate is dissolved, and the egg shell membranes are taken out, washed and dried to obtain the egg shell membranes; the egg shell membranes are added to a sodium periodate aqueous solution to react in the dark for 5-8 hours, and the egg shell membranes are taken out, washed and dried, and then ground with liquid nitrogen and sieved to obtain the treated egg shell membrane powder; 5-6 parts by weight of the treated egg shell membrane powder, 3-4 parts by weight of chitosan quaternary ammonium salt, 1-2 parts by weight of sodium lignin sulfonate, 1-3 parts by weight of dodecyl dimethyl betaine and 150-200 parts by weight of water are uniformly mixed to obtain the finishing liquid.

[0031] Preferably, the concentration of the hydrochloric acid is 1-2M.

[0032] Preferably, the solid-to-liquid ratio of the eggshell membrane to the sodium periodate aqueous solution is 1kg:6-10L.

[0033] Preferably, the concentration of the sodium periodate aqueous solution is 3-5wt%.

[0034] Preferably, the eggshell membrane is ground into powder and then passed through a 50-100 mesh sieve.

[0035] The invention also provides an antibacterial and radiation-proof fabric, which is prepared by the above method.

[0036] Beneficial technical effects of the present invention: The antibacterial and radiation-proof fabric prepared by the present invention has the advantages of modified seaweed fiber and silver fiber, is soft, skin-friendly, and has good radiation protection performance and mildew and antibacterial performance. The present invention utilizes the hydroxyl active groups contained on the surface of seaweed fiber, and introduces epoxy groups on the surface of seaweed fiber to improve the binding activity between fibers, making it easier to introduce amino groups; then it is aminated with an amino treatment liquid to obtain a pretreated seaweed fiber containing a large number of amino groups, providing a large number of active groups for subsequent modification; finally, the pretreated seaweed fiber is grafted and modified with hesperidin, 1-aminocyclopropane carboxylic acid and 5-amino-2,4,6-triiodoisophthaloyl chloride to give it excellent radiation resistance. In addition, the present invention arranges the fabric by treating eggshell membrane powder and chitosan quaternary ammonium salt, attaches to the surface of silver fiber and modified seaweed fiber to form a film, and plays a role in reinforcing and protecting the nano silver and anti-radiation active substances on the fiber surface, making the anti-radiation and antibacterial effects more durable. DETAILED DESCRIPTION

[0037] Some of the raw materials are introduced as follows:

[0038] The silver fiber in the embodiment was purchased from Shanghai Pusheng Gold and Silver Silk Textile Co., Ltd., with a linear density of 30D, a substrate of nylon, and a silver content of 18%.

[0039] The seaweed fiber in the examples was purchased from Qingdao Gecheng Jingwei Biotechnology Co., Ltd., with a linear density of 1.4D.

[0040] The chitosan quaternary ammonium salt in the embodiment is hydroxypropyltrimethylammonium chloride chitosan purchased from Beijing Huamaike Biotechnology Co., Ltd., with a substitution degree of ≥90%.

[0041] Ethylene glycol diacrylate in the examples, CAS: 2274-11-5.

[0042] 5-amino-2,4,6-triiodoisophthaloyl chloride in the embodiment, CAS: 37441-29-5.

[0043] Example 1

[0044] A method for preparing an antibacterial and radiation-proof fabric comprises the following steps:

[0045] (i) feeding 45 parts by weight of modified seaweed fiber and 15 parts by weight of silver fiber into a blending machine for blending to obtain a blended yarn; weaving the blended yarn through a knitting weft knitting circular machine to obtain a plain woven fabric with a gram weight of 130 g / m 2 ;

[0046] (ii) immersing the above plain woven fabric into a finishing liquid at a solid-liquid ratio of 1kg:8L, soaking at 30°C for 35min, double immersion and double rolling, with a rolling rate of 92%; baking at 150°C for 30s, washing and drying after the completion, to obtain the antibacterial and radiation-proof fabric.

[0047] The preparation method of the modified seaweed fiber is:

[0048] X1. Add 15 parts by weight of seaweed fiber to 50 parts by weight of anhydrous ethanol and mix well, then add 12 parts by weight of epichlorohydrin, adjust the pH to 9, stir at 26° C. and 170 r / min for 18 h, take out, wash and dry to obtain epoxidized seaweed fiber;

[0049] X2. Under nitrogen protection, 10 parts by weight of a 30 wt% diethylenetriamine acetone solution was added to 40 parts by weight of a 15 wt% ethylene glycol diacrylate acetone solution, and the mixture was stirred at 58°C and 80 r / min for 50 min. After the mixture was stirred, 450 parts by weight of water was added, and the mixture was ultrasonicated at 30 kHz and 450 W for 40 min to obtain an amino treatment solution. The epoxidized seaweed fiber was added to the amino treatment solution at a solid-liquid ratio of 1 kg:4 L, the pH was adjusted to 9, and the mixture was stirred at 42°C and 170 r / min for 8 h. The pretreated seaweed fiber was washed and dried after being taken out to obtain the pretreated seaweed fiber.

[0050] X3. Under nitrogen protection, add 1.5 parts by weight of hesperidin, 1.5 parts by weight of 1-aminocyclopropanecarboxylic acid and 3 parts by weight of 5-amino-2,4,6-triiodoisophthaloyl chloride to 150 parts by weight of dimethyl sulfoxide and mix evenly to obtain an anti-radiation treatment solution; add the above-mentioned pretreated seaweed fiber to the anti-radiation treatment solution at a solid-liquid ratio of 1kg:4L, stir for 2.5h at 26°C and 170r / min, take out, wash and dry to obtain modified seaweed fiber.

[0051] The preparation method of the finishing liquid is:

[0052] The fresh egg shells are soaked in 1.5M hydrochloric acid, and the egg shell membranes are separated after the calcium carbonate is dissolved, and the egg shell membranes are taken out, washed and dried to obtain the egg shell membranes; the egg shell membranes are added to a 4wt% sodium periodate aqueous solution at a solid-liquid ratio of 1kg:7L, and reacted in the dark for 6 hours, and the egg shell membranes are taken out, washed and dried, and then ground with liquid nitrogen and passed through a 60-mesh sieve to obtain the treated egg shell membrane powder; 5.5 parts by weight of the treated egg shell membrane powder, 3.5 parts by weight of chitosan quaternary ammonium salt, 1.8 parts by weight of sodium lignin sulfonate, 2 parts by weight of dodecyl dimethyl betaine and 180 parts by weight of water are uniformly mixed to obtain the finishing liquid.

[0053] Example 2

[0054] A method for preparing an antibacterial and radiation-proof fabric comprises the following steps:

[0055] (i) feeding 45 parts by weight of modified seaweed fiber and 15 parts by weight of silver fiber into a blending machine for blending to obtain a blended yarn; weaving the blended yarn through a knitting weft knitting circular machine to obtain a plain woven fabric with a gram weight of 130 g / m 2 ;

[0056] (ii) immersing the above plain woven fabric into a finishing liquid at a solid-liquid ratio of 1kg:8L, soaking at 30°C for 35min, double immersion and double rolling, with a rolling rate of 92%; baking at 150°C for 30s, washing and drying after the completion, to obtain the antibacterial and radiation-proof fabric.

[0057] The preparation method of the modified seaweed fiber is:

[0058] Under nitrogen protection, 1.5 parts by weight of hesperidin, 1.5 parts by weight of 1-aminocyclopropanecarboxylic acid and 3 parts by weight of 5-amino-2,4,6-triiodoisophthaloyl chloride were added to 150 parts by weight of dimethyl sulfoxide and mixed evenly to obtain an anti-radiation treatment solution; seaweed fiber was added to the anti-radiation treatment solution at a solid-liquid ratio of 1kg:4L, stirred for 2.5h at 26°C and 170r / min, taken out, washed and dried to obtain modified seaweed fiber.

[0059] The preparation method of the finishing liquid is:

[0060] The fresh egg shells are soaked in 1.5M hydrochloric acid, and the egg shell membranes are separated after the calcium carbonate is dissolved, and the egg shell membranes are taken out, washed and dried to obtain the egg shell membranes; the egg shell membranes are added to a 4wt% sodium periodate aqueous solution at a solid-liquid ratio of 1kg:7L, and reacted in the dark for 6 hours, and the egg shell membranes are taken out, washed and dried, and then ground with liquid nitrogen and passed through a 60-mesh sieve to obtain the treated egg shell membrane powder; 5.5 parts by weight of the treated egg shell membrane powder, 3.5 parts by weight of chitosan quaternary ammonium salt, 1.8 parts by weight of sodium lignin sulfonate, 2 parts by weight of dodecyl dimethyl betaine and 180 parts by weight of water are uniformly mixed to obtain the finishing liquid.

[0061] Example 3

[0062] A method for preparing an antibacterial and radiation-proof fabric comprises the following steps:

[0063] (i) feeding 45 parts by weight of modified seaweed fiber and 15 parts by weight of silver fiber into a blending machine for blending to obtain a blended yarn; weaving the blended yarn through a knitting weft knitting circular machine to obtain a plain woven fabric with a gram weight of 130 g / m 2 ;

[0064] (ii) immersing the above plain woven fabric into a finishing liquid at a solid-liquid ratio of 1kg:8L, soaking at 30°C for 35min, double immersion and double rolling, with a rolling rate of 92%; baking at 150°C for 30s, washing and drying after the completion, to obtain the antibacterial and radiation-proof fabric.

[0065] The preparation method of the modified seaweed fiber is:

[0066] X1. Add 15 parts by weight of seaweed fiber to 50 parts by weight of anhydrous ethanol and mix well, then add 12 parts by weight of epichlorohydrin, adjust the pH to 9, stir at 26° C. and 170 r / min for 18 h, take out, wash and dry to obtain epoxidized seaweed fiber;

[0067] X2. Under nitrogen protection, 10 parts by weight of a 30 wt% diethylenetriamine acetone solution was added to 40 parts by weight of a 15 wt% ethylene glycol diacrylate acetone solution, and the mixture was stirred at 58°C and 80 r / min for 50 min. After the mixture was stirred, 450 parts by weight of water was added, and the mixture was ultrasonicated at 30 kHz and 450 W for 40 min to obtain an amino treatment solution. The epoxidized seaweed fiber was added to the amino treatment solution at a solid-liquid ratio of 1 kg:4 L, the pH was adjusted to 9, and the mixture was stirred at 42°C and 170 r / min for 8 h. The pretreated seaweed fiber was washed and dried after being taken out to obtain the pretreated seaweed fiber.

[0068] X3. Under nitrogen protection, add 3 parts by weight of hesperidin and 3 parts by weight of 5-amino-2,4,6-triiodoisophthaloyl chloride to 150 parts by weight of dimethyl sulfoxide and mix evenly to obtain an anti-radiation treatment solution; add the above-mentioned pretreated seaweed fiber to the anti-radiation treatment solution at a solid-liquid ratio of 1kg:4L, stir for 2.5h at 26°C and 170r / min, take out, wash and dry to obtain modified seaweed fiber.

[0069] The preparation method of the finishing liquid is:

[0070] The fresh egg shells are soaked in 1.5M hydrochloric acid, and the egg shell membranes are separated after the calcium carbonate is dissolved, and the egg shell membranes are taken out, washed and dried to obtain the egg shell membranes; the egg shell membranes are added to a 4wt% sodium periodate aqueous solution at a solid-liquid ratio of 1kg:7L, and reacted in the dark for 6 hours, and the egg shell membranes are taken out, washed and dried, and then ground with liquid nitrogen and passed through a 60-mesh sieve to obtain the treated egg shell membrane powder; 5.5 parts by weight of the treated egg shell membrane powder, 3.5 parts by weight of chitosan quaternary ammonium salt, 1.8 parts by weight of sodium lignin sulfonate, 2 parts by weight of dodecyl dimethyl betaine and 180 parts by weight of water are uniformly mixed to obtain the finishing liquid.

[0071] Example 4

[0072] A method for preparing an antibacterial and radiation-proof fabric comprises the following steps:

[0073] (i) feeding 45 parts by weight of modified seaweed fiber and 15 parts by weight of silver fiber into a blending machine for blending to obtain a blended yarn; weaving the blended yarn through a knitting weft knitting circular machine to obtain a plain woven fabric with a gram weight of 130 g / m 2 ;

[0074] (ii) immersing the above plain woven fabric into a finishing liquid at a solid-liquid ratio of 1kg:8L, soaking at 30°C for 35min, double immersion and double rolling, with a rolling rate of 92%; baking at 150°C for 30s, washing and drying after the completion, to obtain the antibacterial and radiation-proof fabric.

[0075] The preparation method of the modified seaweed fiber is:

[0076] X1. Add 15 parts by weight of seaweed fiber to 50 parts by weight of anhydrous ethanol and mix well, then add 12 parts by weight of epichlorohydrin, adjust the pH to 9, stir at 26° C. and 170 r / min for 18 h, take out, wash and dry to obtain epoxidized seaweed fiber;

[0077] X2. Under nitrogen protection, 10 parts by weight of a 30 wt% diethylenetriamine acetone solution was added to 40 parts by weight of a 15 wt% ethylene glycol diacrylate acetone solution, and the mixture was stirred at 58°C and 80 r / min for 50 min. After the mixture was stirred, 450 parts by weight of water was added, and the mixture was ultrasonicated at 30 kHz and 450 W for 40 min to obtain an amino treatment solution. The epoxidized seaweed fiber was added to the amino treatment solution at a solid-liquid ratio of 1 kg:4 L, the pH was adjusted to 9, and the mixture was stirred at 42°C and 170 r / min for 8 h. The pretreated seaweed fiber was washed and dried after being taken out to obtain the pretreated seaweed fiber.

[0078] X3. Under nitrogen protection, add 3 parts by weight of 1-aminocyclopropanecarboxylic acid and 3 parts by weight of 5-amino-2,4,6-triiodoisophthaloyl chloride to 150 parts by weight of dimethyl sulfoxide and mix evenly to obtain an anti-radiation treatment solution; add the above-mentioned pretreated seaweed fiber to the anti-radiation treatment solution at a solid-liquid ratio of 1kg:4L, stir for 2.5h at 26°C and 170r / min, take out, wash and dry to obtain modified seaweed fiber.

[0079] The preparation method of the finishing liquid is:

[0080] The fresh egg shells are soaked in 1.5M hydrochloric acid, and the egg shell membranes are separated after the calcium carbonate is dissolved, and the egg shell membranes are taken out, washed and dried to obtain the egg shell membranes; the egg shell membranes are added to a 4wt% sodium periodate aqueous solution at a solid-liquid ratio of 1kg:7L, and reacted in the dark for 6 hours, and the egg shell membranes are taken out, washed and dried, and then ground with liquid nitrogen and passed through a 60-mesh sieve to obtain the treated egg shell membrane powder; 5.5 parts by weight of the treated egg shell membrane powder, 3.5 parts by weight of chitosan quaternary ammonium salt, 1.8 parts by weight of sodium lignin sulfonate, 2 parts by weight of dodecyl dimethyl betaine and 180 parts by weight of water are uniformly mixed to obtain the finishing liquid.

[0081] Example 5

[0082] A method for preparing an antibacterial and radiation-proof fabric comprises the following steps:

[0083] (i) feeding 45 parts by weight of modified seaweed fiber and 15 parts by weight of silver fiber into a blending machine for blending to obtain a blended yarn; weaving the blended yarn through a knitting weft knitting circular machine to obtain a plain woven fabric with a gram weight of 130 g / m 2 ;

[0084] (ii) immersing the above plain woven fabric into a finishing liquid at a solid-liquid ratio of 1kg:8L, soaking at 30°C for 35min, double immersion and double rolling, with a rolling rate of 92%; baking at 150°C for 30s, washing and drying after the completion, to obtain the antibacterial and radiation-proof fabric.

[0085] The preparation method of the modified seaweed fiber is:

[0086] X1. Add 15 parts by weight of seaweed fiber to 50 parts by weight of anhydrous ethanol and mix well, then add 12 parts by weight of epichlorohydrin, adjust the pH to 9, stir at 26° C. and 170 r / min for 18 h, take out, wash and dry to obtain epoxidized seaweed fiber;

[0087] X2. Under nitrogen protection, 10 parts by weight of a 30 wt% diethylenetriamine acetone solution was added to 40 parts by weight of a 15 wt% ethylene glycol diacrylate acetone solution, and the mixture was stirred at 58°C and 80 r / min for 50 min. After the mixture was stirred, 450 parts by weight of water was added, and the mixture was ultrasonicated at 30 kHz and 450 W for 40 min to obtain an amino treatment solution. The epoxidized seaweed fiber was added to the amino treatment solution at a solid-liquid ratio of 1 kg:4 L, the pH was adjusted to 9, and the mixture was stirred at 42°C and 170 r / min for 8 h. The pretreated seaweed fiber was washed and dried after being taken out to obtain the pretreated seaweed fiber.

[0088] X3. Under nitrogen protection, add 1.5 parts by weight of hesperidin, 1.5 parts by weight of 1-aminocyclopropanecarboxylic acid and 3 parts by weight of 5-amino-2,4,6-triiodoisophthaloyl chloride to 150 parts by weight of dimethyl sulfoxide and mix evenly to obtain an anti-radiation treatment solution; add the above-mentioned pretreated seaweed fiber to the anti-radiation treatment solution at a solid-liquid ratio of 1kg:4L, stir for 2.5h at 26°C and 170r / min, take out, wash and dry to obtain modified seaweed fiber.

[0089] The preparation method of the finishing liquid is:

[0090] 3.5 parts by weight of chitosan quaternary ammonium salt, 1.8 parts by weight of sodium lignin sulfonate, 2 parts by weight of dodecyl dimethyl betaine and 180 parts by weight of water were uniformly mixed to obtain the finishing liquid.

[0091] Example 6

[0092] A method for preparing an antibacterial and radiation-proof fabric comprises the following steps:

[0093] (i) feeding 45 parts by weight of modified seaweed fiber and 15 parts by weight of silver fiber into a blending machine for blending to obtain a blended yarn; weaving the blended yarn through a knitting weft knitting circular machine to obtain a plain woven fabric with a gram weight of 130 g / m 2 ;

[0094] (ii) immersing the above plain woven fabric into a finishing liquid at a solid-liquid ratio of 1kg:8L, soaking at 30°C for 35min, double immersion and double rolling, with a rolling rate of 92%; baking at 150°C for 30s, washing and drying after the completion, to obtain the antibacterial and radiation-proof fabric.

[0095] The preparation method of the modified seaweed fiber is:

[0096] X1. Add 15 parts by weight of seaweed fiber to 50 parts by weight of anhydrous ethanol and mix well, then add 12 parts by weight of epichlorohydrin, adjust the pH to 9, stir at 26° C. and 170 r / min for 18 h, take out, wash and dry to obtain epoxidized seaweed fiber;

[0097] X2. Under nitrogen protection, 10 parts by weight of a 30 wt% diethylenetriamine acetone solution was added to 40 parts by weight of a 15 wt% ethylene glycol diacrylate acetone solution, and the mixture was stirred at 58°C and 80 r / min for 50 min. After the mixture was stirred, 450 parts by weight of water was added, and the mixture was ultrasonicated at 30 kHz and 450 W for 40 min to obtain an amino treatment solution. The epoxidized seaweed fiber was added to the amino treatment solution at a solid-liquid ratio of 1 kg:4 L, the pH was adjusted to 9, and the mixture was stirred at 42°C and 170 r / min for 8 h. The pretreated seaweed fiber was washed and dried after being taken out to obtain the pretreated seaweed fiber.

[0098] X3. Under nitrogen protection, add 1.5 parts by weight of hesperidin, 1.5 parts by weight of 1-aminocyclopropanecarboxylic acid and 3 parts by weight of 5-amino-2,4,6-triiodoisophthaloyl chloride to 150 parts by weight of dimethyl sulfoxide and mix evenly to obtain an anti-radiation treatment solution; add the above-mentioned pretreated seaweed fiber to the anti-radiation treatment solution at a solid-liquid ratio of 1kg:4L, stir for 2.5h at 26°C and 170r / min, take out, wash and dry to obtain modified seaweed fiber.

[0099] The preparation method of the finishing liquid is:

[0100] Fresh egg shells are soaked in 1.5M hydrochloric acid, and after calcium carbonate is dissolved, the eggshell membranes are separated, taken out, cleaned, and dried to obtain the eggshell membranes; the eggshell membranes are ground with liquid nitrogen and passed through a 60-mesh sieve to obtain eggshell membrane powder; 5.5 parts by weight of eggshell membrane powder, 3.5 parts by weight of chitosan quaternary ammonium salt, 1.8 parts by weight of sodium lignin sulfonate, 2 parts by weight of dodecyl dimethyl betaine and 180 parts by weight of water are uniformly mixed to obtain the finishing liquid.

[0101] Test Example 1

[0102] Evaluation of antibacterial performance: The antibacterial performance of the antibacterial and radiation-proof fabrics was measured with reference to GB / T 20944.3-2008 "Evaluation of antibacterial performance of textiles Part 3: Oscillation method". Ten groups were tested in parallel for each example, and the test strains were: Staphylococcus aureus ATCC 6538 and Escherichia coli ATCC 8739, and the average value was calculated.

[0103] Table 1 Test results of antibacterial properties

[0104]

[0105] Test Example 2

[0106] Evaluation of radiation protection performance: The radiation protection performance of the antibacterial radiation protection fabrics was measured with reference to GB / T 23463-2009 "Protective clothing - microwave radiation protection clothing". Ten groups were tested in parallel for each example, with a test frequency of 300 MHz, and the average value was calculated.

[0107] Table 2 Test results of radiation protection performance

[0108]

[0109]

[0110] From the above test results, it can be seen that the antibacterial and radiation-proof fabric of Example 1 has better radiation-proof and antibacterial properties before and after washing. Compared with Examples 2-4, the modified seaweed fiber used in Example 1 is given better radiation-proof and antibacterial properties after epoxidation, amination and grafting modification. Specifically, by introducing epoxy groups on the surface of the seaweed fiber, the binding activity between fibers is improved, making it easier to introduce amino groups; then it is aminated with an amino treatment liquid to obtain a pretreated seaweed fiber containing a large number of amino groups, providing a large number of active groups for subsequent modification; finally, the pretreated seaweed fiber is grafted and modified with hesperidin, 1-aminocyclopropanecarboxylic acid and 5-amino-2,4,6-triiodoisophthaloyl chloride, so that these radiation-proof and antibacterial active substances are firmly grafted to the seaweed fiber through chemical bonds, covalent bonding and other effects. Compared with Examples 5-6, in Example 1, the fabric is further post-finished by treating eggshell membrane powder and chitosan quaternary ammonium salt, and the fiber network structure and good biocompatibility of the eggshell membrane powder are utilized to attach to the surface of the silver fiber and the modified seaweed fiber to form a film, which plays a role in reinforcing and protecting the nano silver and anti-radiation active substances on the fiber surface, and the eggshell membrane is treated with sodium periodate in combination with liquid nitrogen, which can improve the spatial network structure of the eggshell membrane, improve the dispersibility and solubility of the eggshell membrane powder in the post-finishing liquid, and is more conducive to the post-finishing, thereby improving the washability and oxidation resistance of the fabric, and making the anti-radiation and antibacterial effects more durable.

[0111] The preferred specific embodiments of the present invention are described in detail above. It should be understood that a person skilled in the art can make many modifications and changes based on the concept of the present invention without creative work. Therefore, any technical solution that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of the prior art should be within the scope of protection determined by the claims.

Claims

1. A method for preparing an antibacterial and radiation-proof fabric, characterized in that: The following steps are involved: (i) blending 40-50 parts by weight of modified seaweed fiber with 10-20 parts by weight of silver fiber to obtain a blended yarn; and weaving the blended yarn to obtain a plain woven fabric; (2) immersing the plain woven fabric in a finishing solution, performing double immersion and double rolling, baking, and after completion, washing and drying to obtain the antibacterial and radiation-proof fabric; The preparation method of the modified seaweed fiber is: X1, epoxidizing the seaweed fiber to obtain epoxidized seaweed fiber; X2, adding the epoxidized seaweed fiber to an amino treatment solution to obtain pretreated seaweed fiber; X3, adding the pretreated seaweed fiber to an anti-radiation treatment solution to obtain modified seaweed fiber; The preparation method of the amino treatment liquid is as follows: 8-12 parts by weight of an acetone solution of diethylenetriamine is added to 30-50 parts by weight of an acetone solution of ethylene glycol diacrylate, stirred at 55-60° C. for 40-60 minutes, and then 400-500 parts by weight of water is added, and ultrasonicated for 30-50 minutes to obtain the amino treatment liquid; The preparation method of the radiation-resistant treatment liquid is as follows: 1-2 parts by weight of hesperidin, 1-2 parts by weight of 1-aminocyclopropanecarboxylic acid and 2-4 parts by weight of 5-amino-2,4,6-triiodoisophthaloyl chloride are added to 120-180 parts by weight of dimethyl sulfoxide and mixed evenly to obtain the radiation-resistant treatment liquid.

2. The method for preparing the antibacterial and radiation-proof fabric according to claim 1, characterized in that: The solid-to-liquid ratio of the epoxidized seaweed fiber to the amino treatment liquid is 1kg:3-5L.

3. The method for preparing the antibacterial and radiation-proof fabric according to claim 1, wherein the solid-liquid ratio of the pretreated seaweed fiber to the radiation-proof treatment liquid is 1 kg:3-5 L.

4. The method for preparing the antibacterial and radiation-proof fabric according to claim 1, characterized in that: The preparation method of the finishing liquid is as follows: 5-6 parts by weight of treated eggshell membrane powder, 3-4 parts by weight of chitosan quaternary ammonium salt, 1-2 parts by weight of sodium lignin sulfonate, 1-3 parts by weight of dodecyl dimethyl betaine and 150-200 parts by weight of water are uniformly mixed to obtain the finishing liquid.

5. The method for preparing the antibacterial and radiation-proof fabric according to claim 4, characterized in that: The method for preparing the treated eggshell membrane powder comprises: soaking the eggshell in hydrochloric acid, separating the eggshell membrane after the calcium carbonate is dissolved, taking out the eggshell membrane, washing and drying it to obtain the eggshell membrane; adding the eggshell membrane to a sodium periodate aqueous solution to react for 5-8 hours in the dark, taking out the eggshell membrane, washing and drying it, grinding it with liquid nitrogen and sieving it to obtain the treated eggshell membrane powder.

6. The method for preparing the antibacterial and radiation-proof fabric according to claim 5, characterized in that: The solid-to-liquid ratio of the eggshell membrane to the sodium periodate aqueous solution is 1kg:6-10L. 7.An antibacterial and radiation-proof fabric, characterized in that: The method is prepared by the method according to any one of claims 1 to 6.

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