Breathable sports bandage and preparation method thereof

Abstract

The invention discloses a breathable sports bandage and a preparation method thereof, and relates to the technical field of bandages, the breathable sports bandage is prepared from the following raw materials by weight: 8-10 parts of chitin fiber, 6-8 parts of graphene polyester composite fiber, 12-15 parts of corn fiber, 50-60 parts of functional synthetic fiber, and 1-3 parts of quaternary ammonium salt cup [3] carbazole; the functional synthetic fiber is prepared from a copolymer through melt spinning, wherein the copolymer is prepared from 4-methyl-5-vinylthiazole, 2-acrylamido-2-methylpropanesulfonic acid and N-(4-cyano-3-trifluoromethylphenyl) methacrylamide through copolymerization. The breathable sports bandage is good in breathability and wearing comfort, sufficient in antibacterial property and antibacterial stability and good in moisture absorption effect.

Description

Technical Field

[0001] The present invention relates to the technical field of bandages, and particularly to a breathable sports bandage and a preparation method thereof. Background Art

[0002] A sports bandage is a medical supply that is worn during exercise to prevent sports injuries, protect and strengthen joints and muscles, and effectively protect vulnerable parts such as ankles, wrists, and fingers. With the rapid development of sports protective gear, the market demand for sports bandages is increasing, and the performance requirements for them are also getting higher and higher.

[0003] Currently, the sports bandages on the market have poor absorbency for a large amount of sweat during exercise, and are extremely prone to bacterial growth and odor generation after being immersed in sweat, bringing an unpleasant feeling to people, and also easily causing skin allergies and affecting the quality of exercise. At the same time, the existing sports bandages also have technical defects such as insufficient breathability, poor wearing comfort, insufficient performance stability, and short service life.

[0004] In order to improve the above technical problems, a Chinese invention patent with the authorization announcement number CN109045340B discloses a bandage for enhancing joint movement ability, which is made of the following raw materials: chloroprene 65 - 67, modified polyamide 41 - 43, ramie fiber 15 - 17, chitosan fiber 10 - 12, seaweed carbon fiber 6 - 8, graphene fiber 3 - 5; the bandage for enhancing joint movement ability provided by the invention is moisture-absorbing and breathable, effectively antibacterial, and avoids the generation of odor due to bacterial growth. The bandage itself can accelerate blood circulation in a static state, promote joint metabolism, enhance the movement ability of joints or promote the healing of injured joints; mixing chloroprene, 1 / 2 chitosan fiber, seaweed carbon fiber, and graphene fiber improves the antibacterial property and health care function of the bandage. Seaweed carbon fiber and graphene fiber can promote joint blood circulation, accelerate metabolism, avoid joint injuries caused by insufficient warm-up, and at the same time can also accelerate the healing and recovery of injured joints. However, its breathability and wearing comfort still need to be further improved.

[0005] It can be seen that there is still a need in this field for a breathable sports bandage with good breathability and wearing comfort, sufficient antibacterial property and antibacterial stability, and good moisture absorption effect, as well as a preparation method thereof. Summary of the Invention

[0006] In order to overcome the defects in the prior art, the present invention provides a breathable sports bandage with good breathability and wearing comfort, sufficient antibacterial property and antibacterial stability, and good moisture absorption effect, as well as a preparation method thereof.

[0007] The technical solution adopted by the present invention to solve the technical problem is as follows: a breathable sports bandage is made of the following raw materials in parts by weight: 8-10 parts of chitin fiber, 6-8 parts of graphene-polyester composite fiber, 12-15 parts of corn fiber, 50-60 parts of functional synthetic fiber, and 1-3 parts of quaternary ammonium salt-based calix[3]carbazole; the functional synthetic fiber is made by melt spinning a copolymer prepared by copolymerizing 4-methyl-5-vinylthiazole, 2-acrylamido-2-methylpropanesulfonic acid, and N-(4-cyano-3-trifluoromethylphenyl)methacrylamide.

[0008] Preferably, the fineness of the chitin fiber is 1.5D, provided by Qingdao Jifa Group Co., Ltd.

[0009] Preferably, the specification of the graphene-polyester composite fiber is 75D / 48F, provided by Hangzhou Gaoxi Technology Co., Ltd.

[0010] Preferably, the corn fiber is Xieneng Corn fiber, with the specification of FDY: 50D.

[0011] Preferably, the preparation method of the functional synthetic fiber includes the following steps:

[0012] Step S1, preparation of the functional copolymer: Add 4-methyl-5-vinylthiazole, 2-acrylamido-2-methylpropanesulfonic acid, N-(4-cyano-3-trifluoromethylphenyl)methacrylamide, and an initiator to a high-boiling solvent, stir and react at 60-70°C for 3-5 h under an inert gas atmosphere, then precipitate in water, and wash the precipitated polymer with ethanol 3-6 times. Finally, place it in a vacuum drying oven and dry it at 85-95°C to constant weight to obtain the functional copolymer;

[0013] Step S2, spinning: Add the functional copolymer prepared in Step S1 to a meltblowing device, spray it out through the small holes on the spinneret, and then cool it through a cold box to obtain the functional synthetic fiber.

[0014] Preferably, in Step S1, the mass ratio of 4-methyl-5-vinylthiazole, 2-acrylamido-2-methylpropanesulfonic acid, N-(4-cyano-3-trifluoromethylphenyl)methacrylamide, the initiator, and the high-boiling solvent is 1:(0.8-1.2):(1-3):(0.03-0.06):(15-25).

[0015] Preferably, the initiator is azobisisobutyronitrile; the high-boiling solvent is at least one of dimethyl sulfoxide, N,N-dimethylformamide, and N-methylpyrrolidone; the inert gas is any one of nitrogen, helium, neon, and argon.

[0016] Another object of the present invention is to provide a method for preparing the breathable sports bandage, comprising the following steps: mixing and weaving chitin fiber, graphene polyester composite fiber, corn fiber and functional synthetic fiber into a gauze blank, then rolling and pressing through a rolling mill, soaking in an aqueous dispersion of quaternary ammonium salt-based calix[3]carbazole, washing with water 3-6 times, taking out and drying to constant weight, and then sewing the paste structure to obtain the breathable sports bandage.

[0017] Preferably, the temperature of the rolling and pressing by the rolling mill is 115°C - 155°C, and the speed of the gauze passing through the hot roller of the rolling mill is 150 - 320 revolutions per minute.

[0018] Preferably, the mass percentage concentration of the aqueous dispersion of quaternary ammonium salt-based calix[3]carbazole is 1 - 3%, and the soaking time is 15 - 25 h.

[0019] Preferably, there is no special requirement for the source of the quaternary ammonium salt-based calix[3]carbazole. In an embodiment of the present invention, the quaternary ammonium salt-based calix[3]carbazole is prepared by the method in Example 2 of the Chinese invention patent with the authorization announcement number CN109836429B.

[0020] The beneficial effects produced by adopting the above technical solutions are as follows:

[0021] (1) The method for preparing the breathable sports bandage provided by the present invention has a short and simple process flow, convenient operation control, low labor intensity, little environmental impact, high preparation efficiency and high finished product qualification rate, and can be stably produced industrially.

[0022] (2) The breathable sports bandage provided by the present invention is made of the following raw materials in parts by weight: 8 - 10 parts of chitin fiber, 6 - 8 parts of graphene polyester composite fiber, 12 - 15 parts of corn fiber, 50 - 60 parts of functional synthetic fiber, and 1 - 3 parts of quaternary ammonium salt-based calix[3]carbazole; through the mutual cooperation of each raw material, the made sports bandage has good air permeability and wearing comfort, sufficient antibacterial property and antibacterial stability, and good moisture absorption effect.

[0023] (3) The breathable sports bandage provided by the present invention, the functional synthetic fiber is made by melt spinning a copolymer prepared by copolymerizing 4-methyl-5-vinylthiazole, 2-acrylamido-2-methylpropanesulfonic acid, and N-(4-cyano-3-trifluoromethylphenyl)methacrylamide. At the same time, thiazole, amide, sulfonic acid group, cyano group, and fluorine-containing phenyl structure are introduced. Under the multiple effects of electronic effect, steric effect and conjugation effect, etc., the made product has better air permeability and wearing comfort, more sufficient antibacterial property and antibacterial stability, and better moisture absorption effect; the introduced sulfonic acid group can also provide reaction sites for subsequent crosslinking and curing.

[0024] (4) The breathable sports bandage provided by the present invention is soaked in an aqueous solution of silver nitrate and quaternary ammonium salt-based calix[3]carbazole to introduce a calixcarbazole quaternary ammonium salt cationic structure onto the bandage. They cooperate with other groups or structures on the functional synthetic fiber to further improve the antibacterial performance and antibacterial stability. These ions and groups are linked to the molecular chain of the bandage through ionic bonds, which can effectively improve the stability and prevent loss. Detailed implementation mode

[0025] In order to enable those skilled in the art to better understand the technical solution of the present invention and make the above features, objectives and advantages of the present invention clearer and easier to understand, the present invention will be further described below in conjunction with embodiments. The embodiments are only used to illustrate the present invention and not to limit the scope of the present invention.

[0026] Embodiment 1

[0027] A breathable sports bandage is made from the following raw materials in parts by weight: 8 parts of chitin fiber, 6 parts of graphene polyester composite fiber, 12 parts of corn fiber, 50 parts of functional synthetic fiber, and 1 part of quaternary ammonium salt-based calix[3]carbazole; the functional synthetic fiber is made by melt spinning a copolymer prepared by copolymerizing 4-methyl-5-vinylthiazole, 2-acrylamido-2-methylpropanesulfonic acid, and N-(4-cyano-3-trifluoromethylphenyl)methacrylamide.

[0028] The fineness of the chitin fiber is 1.5D, provided by Qingdao Jifa Group Co., Ltd.; the specification of the graphene polyester composite fiber is 75D / 48F, provided by Hangzhou Gaoxi Technology Co., Ltd.; the corn fiber is Xineng Corn fiber, with a specification of FDY: 50D.

[0029] The preparation method of the functional synthetic fiber includes the following steps:

[0030] Step S1, preparation of the functional copolymer: Add 4-methyl-5-vinylthiazole, 2-acrylamido-2-methylpropanesulfonic acid, N-(4-cyano-3-trifluoromethylphenyl)methacrylamide, and an initiator to a high-boiling solvent, stir and react at 60°C for 3 h in an inert gas atmosphere, then precipitate in water, wash the precipitated polymer 3 times with ethanol, and finally dry it in a vacuum drying oven at 85°C to constant weight to obtain the functional copolymer; the mass ratio of 4-methyl-5-vinylthiazole, 2-acrylamido-2-methylpropanesulfonic acid, N-(4-cyano-3-trifluoromethylphenyl)methacrylamide, the initiator, and the high-boiling solvent is 1:0.8:1:0.03:15; the initiator is azobisisobutyronitrile; the high-boiling solvent is dimethyl sulfoxide; the inert gas is nitrogen; through GPC testing, the M n = 16750 g / mol, MW / M n = 1.359; By elemental analysis, the mass ratio of the structural units introduced by 4-methyl-5-vinylthiazole, 2-acrylamido-2-methylpropanesulfonic acid, and N-(4-cyano-3-trifluoromethylphenyl)methacrylamide is 0.98:0.79:0.99.

[0031] Step S2, Spinning: Add the functional copolymer prepared in Step S1 into a meltblowing device, eject it through the small holes on the spinneret head, and then cool it through a cold box to obtain functional synthetic fibers.

[0032] A preparation method of the breathable sports bandage includes the following steps: Mix and weave chitin fibers, graphene polyester composite fibers, corn fibers, and functional synthetic fibers into a gauze base fabric, then roll and press it through a rolling mill, soak it in an aqueous dispersion of quaternary ammonium salt-based calix[3]carbazole, wash it with water 3 times, take it out and dry it to a constant weight, and then sew and paste the structure to obtain the breathable sports bandage; the temperature of the rolling mill roll pressing is 115°C, and the speed of the gauze passing through the hot roller of the rolling mill is 150 revolutions per minute; the mass percentage concentration of the aqueous dispersion of quaternary ammonium salt-based calix[3]carbazole is 1%, and the soaking time is 15 h; the quaternary ammonium salt-based calix[3]carbazole is prepared by the method in Example 2 of the Chinese invention patent with the authorization announcement number CN109836429B.

[0033] Example 2

[0034] A breathable sports bandage is made from the following raw materials in parts by weight: 8.5 parts of chitin fibers, 6.5 parts of graphene polyester composite fibers, 13 parts of corn fibers, 52 parts of functional synthetic fibers, and 1.5 parts of quaternary ammonium salt-based calix[3]carbazole; the functional synthetic fibers are made by melt spinning a copolymer prepared by copolymerizing 4-methyl-5-vinylthiazole, 2-acrylamido-2-methylpropanesulfonic acid, and N-(4-cyano-3-trifluoromethylphenyl)methacrylamide.

[0035] The fineness of the chitin fibers is 1.5D, provided by Qingdao Jifa Group Co., Ltd.; the specification of the graphene polyester composite fibers is 75D / 48F, provided by Hangzhou Gaoxi Technology Co., Ltd.; the corn fibers are Xinen Corn fibers, with the specification of FDY: 50D.

[0036] The preparation method of the functional synthetic fibers includes the following steps:

[0037] Step S1: Preparation of functional copolymer: 4-methyl-5-vinylthiazole, 2-acrylamido-2-methylpropanesulfonic acid, N-(4-cyano-3-trifluoromethylphenyl)methacrylamide, and an initiator are added to a high-boiling solvent. Under an inert gas atmosphere, the mixture is stirred and reacted at 63 °C for 3.5 h. Then, it is precipitated in water, and the precipitated polymer is washed 4 times with ethanol. Finally, it is dried to a constant weight in a vacuum drying oven at 87 °C to obtain the functional copolymer;

[0038] Step S2: Spinning: The functional copolymer prepared in Step S1 is added to a meltblowing device, ejected through the small holes on the spinneret, and then cooled by a cold box to obtain functional synthetic fibers.

[0039] In Step S1, the mass ratio of 4-methyl-5-vinylthiazole, 2-acrylamido-2-methylpropanesulfonic acid, N-(4-cyano-3-trifluoromethylphenyl)methacrylamide, the initiator, and the high-boiling solvent is 1:0.9:1.5:0.04:17; the initiator is azobisisobutyronitrile; the high-boiling solvent is N,N-dimethylformamide; the inert gas is helium.

[0040] A preparation method of the breathable sports bandage includes the following steps: Chitin fiber, graphene polyester composite fiber, corn fiber, and functional synthetic fiber are blended and woven into a gauze base fabric, then roll-pressed by a rolling mill, soaked in an aqueous dispersion of quaternary ammonium salt-based calix[3]carbazole, washed 4 times with water, taken out and dried to a constant weight, and then a sticking structure is sewn to obtain the breathable sports bandage; the temperature of the rolling mill roll-pressing is 125 °C, and the speed of the gauze passing through the hot roller of the rolling mill is 200 revolutions per minute; the mass percentage concentration of the aqueous dispersion of quaternary ammonium salt-based calix[3]carbazole is 1.5%, and the soaking time is 17 h; the quaternary ammonium salt-based calix[3]carbazole is prepared by the method in Example 2 of the Chinese invention patent with the authorization announcement number CN109836429B.

[0041] Example 3

[0042] A breathable sports bandage is made from the following raw materials in parts by weight: 9 parts of chitin fiber, 7 parts of graphene polyester composite fiber, 13.5 parts of corn fiber, 55 parts of functional synthetic fiber, and 2 parts of quaternary ammonium salt-based calix[3]carbazole; the functional synthetic fiber is made by melt spinning a copolymer prepared by copolymerizing 4-methyl-5-vinylthiazole, 2-acrylamido-2-methylpropanesulfonic acid, and N-(4-cyano-3-trifluoromethylphenyl)methacrylamide.

[0043] The fineness of the chitin fiber is 1.5 D, provided by Qingdao Jifa Group Co., Ltd.; the specification of the graphene polyester composite fiber is 75 D / 48 F, provided by Hangzhou Gaoxi Technology Co., Ltd.; the corn fiber is Xieneng Corn fiber, with a specification of FDY: 50D.

[0044] The preparation method of the functional synthetic fiber includes the following steps:

[0045] Step S1, preparation of the functional copolymer: Add 4-methyl-5-vinylthiazole, 2-acrylamido-2-methylpropanesulfonic acid, N-(4-cyano-3-trifluoromethylphenyl) methacrylamide, and an initiator to a high-boiling solvent. Under an inert gas atmosphere, stir and react at 65 °C for 4 h. Then precipitate in water, and wash the precipitated polymer 5 times with ethanol. Finally, place it in a vacuum drying oven and dry at 90 °C to constant weight to obtain the functional copolymer;

[0046] Step S2, spinning: Add the functional copolymer prepared in Step S1 to a meltblown device, spray it out through the small holes on the spinneret, and then cool it through a cold box to obtain the functional synthetic fiber.

[0047] In Step S1, the mass ratio of 4-methyl-5-vinylthiazole, 2-acrylamido-2-methylpropanesulfonic acid, N-(4-cyano-3-trifluoromethylphenyl) methacrylamide, the initiator, and the high-boiling solvent is 1:1:2:0.045:20; the initiator is azobisisobutyronitrile; the high-boiling solvent is N-methylpyrrolidone; the inert gas is neon.

[0048] A preparation method of the breathable sports bandage includes the following steps: Mix and weave chitin fiber, graphene polyester composite fiber, corn fiber, and functional synthetic fiber into a gauze base fabric. Then, roll and press it through a rolling mill, soak it in an aqueous dispersion of quaternary ammonium salt-based calix[3]carbazole, wash it 4 times with water, take it out and dry it to constant weight. Then sew and paste the structure to obtain the breathable sports bandage; the temperature of the rolling mill roll pressing is 130 °C, and the speed of the gauze passing through the hot roller of the rolling mill is 230 revolutions per minute; the mass percentage concentration of the aqueous dispersion of quaternary ammonium salt-based calix[3]carbazole is 2%, and the soaking time is 20 h; the quaternary ammonium salt-based calix[3]carbazole is prepared by the method in Example 2 of the Chinese invention patent with the authorization announcement number CN109836429B.

[0049] Example 4

[0050] A breathable sports bandage is made from the following raw materials in parts by weight: 9.5 parts of chitin fiber, 7.5 parts of graphene polyester composite fiber, 14.5 parts of corn fiber, 58 parts of functional synthetic fiber, and 2.5 parts of quaternary ammonium salt-based calix[3]carbazole; the functional synthetic fiber is made by melt spinning a copolymer prepared by copolymerizing 4-methyl-5-vinylthiazole, 2-acrylamido-2-methylpropanesulfonic acid, and N-(4-cyano-3-trifluoromethylphenyl) methacrylamide.

[0051] The fineness of the chitin fiber is 1.5D, provided by Qingdao Jifa Group Co., Ltd.; the specification of the graphene-polyester composite fiber is 75D / 48F, provided by Hangzhou Gaoxi Technology Co., Ltd.; the corn fiber is Xieneng Corn fiber, with a specification of FDY: 50D.

[0052] The preparation method of the functional synthetic fiber includes the following steps:

[0053] Step S1, preparation of the functional copolymer: Add 4-methyl-5-vinylthiazole, 2-acrylamido-2-methylpropanesulfonic acid, N-(4-cyano-3-trifluoromethylphenyl) methacrylamide, and an initiator into a high-boiling solvent, and stir and react at 68 °C for 3-5 h in an inert gas atmosphere. Then precipitate in water, and wash the precipitated polymer 6 times with ethanol. Finally, place it in a vacuum drying oven and dry it at 93 °C to constant weight to obtain the functional copolymer;

[0054] Step S2, spinning: Add the functional copolymer prepared in Step S1 into a meltblowing device, spray it out through the small holes on the spinneret head, and then cool it through a cold box to obtain the functional synthetic fiber.

[0055] In Step S1, the mass ratio of 4-methyl-5-vinylthiazole, 2-acrylamido-2-methylpropanesulfonic acid, N-(4-cyano-3-trifluoromethylphenyl) methacrylamide, the initiator, and the high-boiling solvent is 1:1.1:2.5:0.055:23; the initiator is azobisisobutyronitrile; the high-boiling solvent is a mixture of dimethyl sulfoxide, N,N-dimethylformamide, and N-methylpyrrolidone in a mass ratio of 1:2:3; the inert gas is argon.

[0056] A preparation method of the breathable sports bandage includes the following steps: Mix and weave the chitin fiber, graphene-polyester composite fiber, corn fiber, and functional synthetic fiber into a gauze blank fabric, then roll and press it through a rolling mill, soak it in an aqueous dispersion system of quaternary ammonium salt-based calix[3]carbazole, wash it 6 times with water, take it out and dry it to constant weight, and then sew and paste the structure to obtain the breathable sports bandage; the temperature of the rolling mill roll pressing is 150 °C, and the speed of the gauze passing through the hot roller of the rolling mill is 300 revolutions per minute; the mass percentage concentration of the aqueous dispersion system of quaternary ammonium salt-based calix[3]carbazole is 2.5%, and the soaking time is 23 h; the quaternary ammonium salt-based calix[3]carbazole is prepared according to the method in Example 2 of the Chinese invention patent with the authorization announcement number CN109836429B.

[0057] Example 5

[0058] A breathable sports bandage is made from the following raw materials in parts by weight: 10 parts of chitin fiber, 8 parts of graphene-polyester composite fiber, 15 parts of corn fiber, 60 parts of functional synthetic fiber, and 3 parts of quaternary ammonium salt-based calix[3]carbazole; the functional synthetic fiber is made by melt spinning a copolymer prepared by copolymerizing 4-methyl-5-vinylthiazole, 2-acrylamido-2-methylpropanesulfonic acid, and N-(4-cyano-3-trifluoromethylphenyl)methacrylamide.

[0059] The chitin fiber has a fineness of 1.5D and is provided by Qingdao Jifa Group Co., Ltd.; the graphene-polyester composite fiber has a specification of 75D / 48F and is provided by Hangzhou Gaoxi Technology Co., Ltd.; the corn fiber is Xinen Corn fiber, with a specification of FDY: 50D.

[0060] The preparation method of the functional synthetic fiber includes the following steps:

[0061] Step S1, preparation of the functional copolymer: Add 4-methyl-5-vinylthiazole, 2-acrylamido-2-methylpropanesulfonic acid, N-(4-cyano-3-trifluoromethylphenyl)methacrylamide, and an initiator to a high-boiling solvent, stir and react at 70°C for 5 h in an inert gas atmosphere, then precipitate in water, wash the precipitated polymer 6 times with ethanol, and finally dry it to constant weight at 95°C in a vacuum drying oven to obtain the functional copolymer;

[0062] Step S2, spinning: Add the functional copolymer prepared in step S1 to a meltblowing device, spray it out through the small holes on the spinneret, and then cool it through a cold box to obtain the functional synthetic fiber.

[0063] In step S1, the mass ratio of 4-methyl-5-vinylthiazole, 2-acrylamido-2-methylpropanesulfonic acid, N-(4-cyano-3-trifluoromethylphenyl)methacrylamide, the initiator, and the high-boiling solvent is 1:1.2:3:0.06:25; the initiator is azobisisobutyronitrile; the high-boiling solvent is dimethyl sulfoxide; the inert gas is nitrogen.

[0064] A preparation method of the breathable sports bandage includes the following steps: Mix and weave chitin fiber, graphene polyester composite fiber, corn fiber and functional synthetic fiber into a gauze base fabric, then roll and press it through a rolling mill, soak it in an aqueous dispersion system of quaternary ammonium salt-based calix[3]carbazole, wash it 6 times with water, take it out and dry it to constant weight, and then sew the paste structure to obtain the breathable sports bandage; the temperature of the rolling mill roll pressing is 155°C, and the speed of the gauze passing through the hot roll of the rolling mill is 320 revolutions per minute; the mass percentage concentration of the aqueous dispersion system of quaternary ammonium salt-based calix[3]carbazole is 3%, and the soaking time is 25h; the quaternary ammonium salt-based calix[3]carbazole is prepared by the method in Example 2 of the Chinese invention patent with the authorization announcement number CN109836429B.

[0065] Comparative Example 1

[0066] A breathable sports bandage and its preparation method are basically the same as those in Example 1, except that quaternary ammonium salt-based calix[3]carbazole is not added.

[0067] Comparative Example 2

[0068] A breathable sports bandage and its preparation method are basically the same as those in Example 1, except that 2-acrylamido-2-methylpropanesulfonic acid is not added.

[0069] Perform performance tests on the breathable sports bandage samples described in Examples 1-5 and Comparative Examples 1-2. The test results are shown in Table 1. The test method is as follows: Select 3 pieces of bandages from Examples 1-5 and Comparative Examples 1-2, each with a size of 5 cm × 10 cm, and measure the water absorption according to the standard of GB / T22799-2009, record and calculate the average sedimentation time (s); perform a quantitative antibacterial test using the national standard GB / T20944.3-2008 "Evaluation of Antibacterial Properties of Textiles - Part 3: Oscillation Method" to test the antibacterial rate of Escherichia coli before and after 50 washes of the bandages in the examples and comparative examples; subject each sample bandage to be tested (with an area of 2000 mm 2 ) to a YG461H full-automatic air permeability tester for testing, with a measured pressure difference of 100 Pa, test conditions: a constant temperature and humidity laboratory at a temperature of 20 ± 2°C and a humidity of 65 ± 2%, and the test reference standard: GB / T5453-1997 "Determination of Air Permeability of Fabrics".

[0070] As can be seen from Table 1, compared with the comparative examples, the breathable sports bandage disclosed in the examples of the present invention has better air permeability, hygroscopicity, antibacterial property and antibacterial stability; the combined use of quaternary ammonium salt-based calix[3]carbazole and 2-acrylamido-2-methylpropanesulfonic acid is beneficial to improving the above properties.

[0071] Table 1

[0072]

[0073] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and what is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements fall within the scope of the present invention claimed. The scope of protection required by the present invention is defined by the appended claims and their equivalents.

Claims

1. A breathable sports bandage, characterized in that: The invention is made of the following raw materials in parts by weight: 8-10 parts of chitin fiber, 6-8 parts of graphene polyester composite fiber, 12-15 parts of corn fiber, 50-60 parts of functional synthetic fiber and 1-3 parts of quaternary ammonium salt-based calix[3]carbazole; the functional synthetic fiber is made of a copolymer made of 4-methyl-5-vinylthiazole, 2-acrylamide-2-methylpropanesulfonic acid and N-(4-cyano-3-trifluoromethylphenyl)methacrylamide through melt spinning.

2. The breathable sports bandage according to claim 1, characterized in that: The chitosan fiber has a fineness of 1.5D; the graphene polyester composite fiber has a specification of 75D / 48F; the corn fiber is Xinneng Corn fiber, specification is FDY:50D.

3. The breathable sports bandage according to claim 1, characterized in that: The method for preparing the functional synthetic fiber comprises the following steps: Step S1, preparation of functional copolymer: 4-methyl-5-vinylthiazole, 2-acrylamido-2-methylpropanesulfonic acid, N-(4-cyano-3-trifluoromethylphenyl)methacrylamide and initiator are added to a high boiling point solvent, stirred and reacted at 60-70° C. in an inert gas atmosphere for 3-5 hours, then precipitated in water, and the precipitated polymer is washed with ethanol for 3-6 times, and finally dried in a vacuum drying oven at 85-95° C. to constant weight to obtain a functional copolymer; Step S2, spinning: adding the functional copolymer prepared in step S1 into a melt-blowing device, spraying it out through the small holes on the spinneret, and then cooling it in a cold box to obtain a functional synthetic fiber.

4. The breathable sports bandage according to claim 3, characterized in that: The mass ratio of 4-methyl-5-vinylthiazole, 2-acrylamido-2-methylpropanesulfonic acid, N-(4-cyano-3-trifluoromethylphenyl)methacrylamide, initiator and high boiling point solvent in step S1 is 1:(0.8-1.2):(1-3):(0.03-0.06):(15-25).

5. The breathable sports bandage according to claim 3, characterized in that: The initiator is azobisisobutyronitrile; the high boiling point solvent is at least one of dimethyl sulfoxide, N,N-dimethylformamide, and N-methylpyrrolidone; and the inert gas is any one of nitrogen, helium, neon, and argon.

6. A method for preparing the breathable sports bandage according to any one of claims 1 to 5, characterized in that: The method comprises the following steps: chitosan fiber, graphene polyester composite fiber, corn fiber and functional synthetic fiber are blended to form gauze grey cloth, which is then rolled by a rolling mill, soaked in a water dispersion of quaternary ammonium salt-based calix[3]carbazole, washed with water for 3-6 times, taken out and dried to constant weight, and then sewn and pasted to obtain a breathable sports bandage.

7. The method for preparing the breathable sports bandage according to claim 6, characterized in that: The rolling temperature of the rolling mill is 115° C.-155° C., and the speed at which the gauze passes through the hot roller of the rolling mill is 150-320 rpm.

8. The method for preparing the breathable sports bandage according to claim 6, characterized in that: The mass percentage concentration of the aqueous dispersion of the quaternary ammonium salt-based calix[3]carbazole is 1-3%, and the soaking time is 15-25 hours.

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