Nanometer hydrophobic sterilization coiled material and preparation system and preparation method thereof

Abstract

The invention discloses a nanometer hydrophobic sterilization coiled material and a preparation system and method thereof, and relates to the technical field of functional coiled material preparation. The nano hydrophobic sterilizing coiled material comprises a coiled material base material, a sterilizing layer and a nano hydrophobic layer, the sterilization layer is formed by combining a sterilization auxiliary agent on the coiled material base material through a surface treatment process; the nanometer hydrophobic layer is formed on the sterilization layer through a plasma vapor deposition method by a hydrophobic auxiliary agent; the sterilization auxiliary agent comprises a quaternary ammonium compound and a cross-linking agent; the hydrophobic auxiliary agent is one of organic silicon or an organic fluorine compound. According to the preparation method, the coiled material is automatically wound and unwound, plasma deposition is combined, the coiled material is subjected to hydrophobic sterilization treatment, the film layer with the nanometer hydrophobic and bacteriostatic functions is formed and is placed on the surface of the coiled material workpiece, whole-roll treatment of the coiled material can be achieved, the film forming efficiency is greatly improved, and the obtained coiled material has the excellent bacteriostatic effect and hydrophobic performance.

Description

Technical Field

[0001] The present application relates to the technical field of functional coiled material preparation, and in particular to a nano hydrophobic bactericidal coiled material and a preparation system and method thereof. Background Art

[0002] Rolled materials are textiles with a curled shape. They are usually made of fibers, yarns or films as the base material. They are processed by a specific process to form a continuous sheet with a certain thickness and width. They are widely used in many fields. For example, waterproof rolled materials are mainly used in the construction field and have excellent waterproof performance; agricultural rolled materials are mainly used for the growth and protection of crops, such as thermal insulation films and sunshade nets; transportation rolled materials are mainly used for the construction and maintenance of infrastructure such as roads and bridges. In addition, according to the different use environments of the rolled materials, it is necessary to give them certain special properties. At present, various functional rolled materials have been developed, such as fireproof and heat-insulating rolled materials, low-temperature curing rolled materials, anti-corrosion and heat-insulating rolled materials, anti-VHP oxidation rolled materials, anti-static rolled materials and antibacterial and clean rolled materials. Rolled materials with specific functions are selected for specific use environments. Various functional coils are generally prepared with a layer of functional coating on a traditional coil substrate to achieve a specific use effect. Plasma chemical vapor deposition technology is a common method for preparing functional coatings. Its technical principle is to use low-temperature plasma (non-equilibrium plasma) as an energy source, place the workpiece on the cathode of glow discharge under low pressure, use glow discharge or add a heating element to heat the workpiece to a predetermined temperature, and then introduce an appropriate amount of reaction gas and drug vapor through a series of chemical reactions and plasma reactions to form a nanofilm on the surface of the workpiece. However, under normal circumstances, plasma vapor deposition cannot achieve the processing of the entire coil, the efficiency of deposition and film making is low, and textile coil products with both hydrophobic and antibacterial and toxic reduction effects are relatively rare. Based on this, the present application proposes a nano-hydrophobic bactericidal coil and its preparation system and preparation method. Summary of the invention

[0003] The main purpose of the present application is to provide a nano-hydrophobic bactericidal coil and its preparation system and preparation method, aiming to solve the technical problem that it is difficult to prepare a multifunctional coil product with both hydrophobicity and bactericidal properties in the prior art.

[0004] To achieve the above-mentioned purpose, the present application proposes a nano-hydrophobic sterilization coil, comprising a coil substrate, a sterilization layer and a nano-hydrophobic layer;

[0005] The bactericidal layer is bonded to the coil substrate by a bactericidal auxiliary agent through a surface treatment process.

[0006] The nano hydrophobic layer is formed on the bactericidal layer by a plasma vapor deposition method using a hydrophobic auxiliary agent;

[0007] The bactericidal auxiliary agent includes a quaternary ammonium compound and a cross-linking agent;

[0008] The hydrophobic auxiliary agent is one of organic silicon or organic fluorine compounds.

[0009] Optionally, the quaternary ammonium compound is dodecyl dimethyl benzyl ammonium chloride compound, and the amount of the quaternary ammonium compound is 0.5-1.5% of the weight of the coil substrate; the crosslinking agent is silicon nitride, and the amount of the crosslinking agent is 0.1-0.4% of the weight of the coil substrate.

[0010] Optionally, the hydrophobic auxiliary agent is one or more of 2-perfluorobutyl ethyl acrylate, 2-perfluorohexyl ethyl acrylate, 2-perfluorooctyl ethyl acrylate, trifluoropropyl methyl cyclotrisiloxane and hexamethyldisiloxane.

[0011] The present application also proposes a system for preparing a nano-hydrophobic sterilization coil, comprising a sterilization layer preparation component and a nano-hydrophobic layer preparation component, the sterilization layer preparation component comprising an unwinding mechanism, a sterilization container, a roller, a dryer and a winding mechanism connected in sequence along the coil transmission direction, the nano-hydrophobic layer preparation component comprising an inert gas container, a cleaning container, a medicine container, a mixing device and a vacuum chamber for chemical vapor deposition, the winding mechanism is connected to the vacuum chamber, the inert gas container, the cleaning container and the medicine container are respectively connected to the mixing device through mixing pipelines, the outlet end of the mixing device is connected to the vacuum chamber, an automatic unwinding device and a plasma generating device are provided in the vacuum chamber, the automatic unwinding device comprises a first coil placement rack for releasing the coil and a second coil placement rack for collecting the coil, and the plasma generating device is located between the first coil placement rack and the second coil placement rack.

[0012] Optionally, three first rollers with the same structure and connected in sequence are provided in the sterilization container, one of the first rollers is located below the liquid level in the sterilization container, and the other two first rollers are located at the same height above the liquid level in the sterilization container, and the three first rollers are arranged into an inverted isosceles triangle and are transmission-connected to the unwinding mechanism.

[0013] Optionally, the rolling mill includes two second rollers respectively located at the upper and lower sides of the coil and close to each other for squeezing the surface of the passing coil, and the second rollers are transmission-connected to the first roller.

[0014] Optionally, the bottom end of the vacuum chamber body is connected to a vacuum pipeline communicating with the interior of the vacuum chamber body, the other end of the vacuum pipeline is connected to a vacuum pump group, and a proportional butterfly valve for adjusting the vacuum degree is provided on the vacuum pipeline.

[0015] The present application also proposes a method for preparing a nano hydrophobic sterilization coil, which adopts the above-mentioned nano hydrophobic sterilization coil preparation system and includes the following steps:

[0016] The coil substrate is wound on the unwinding mechanism and conveyed to the sterilization container by the first roller, soaked in a sterilization auxiliary agent, squeezed and dried by a roller mill and dried by a dryer, and then collected by a winding mechanism to obtain a coil with a sterilization layer;

[0017] Open the cleaning container and inject the cleaning gas into the vacuum chamber, place the coil with the sterilization layer on the automatic unwinding device, and make the coil with the sterilization layer pass through the plasma generating device 9 and be transported between the first coil placing rack and the second coil placing rack;

[0018] Stop injecting the cleaning gas, heat the hydrophobic additive in the medicine container, open the inert gas container and the medicine container, form a mixed gas through a mixing device, and then input it into the vacuum chamber body. At the same time, start the plasma generating device to make the mixed gas form plasma and deposit on the surface of the coil with the sterilization layer to form a nano-hydrophobic layer, so as to obtain a nano-hydrophobic sterilization coil.

[0019] Optionally, the cleaning gas is oxygen, and the flow rate of the cleaning gas is 100-200 sccm.

[0020] Optionally, in the step of heating the hydrophobic auxiliary agent in the medicine container, the heating temperature is 140-200°C.

[0021] This application includes at least the following beneficial effects:

[0022] The nano-hydrophobic sterilization coil of the present application is composed of a coil substrate, a sterilization layer and a nano-hydrophobic layer. The sterilization layer mainly uses quaternary ammonium compounds as sterilization ingredients. Quaternary ammonium compounds have significant sterilization effects. They mainly achieve sterilization by changing the permeability of microbial cell membranes, destroying enzyme systems and causing protein coagulation and denaturation. Silicone can achieve a hydrophobic effect through the special microstructure and chemical properties of its surface. The surface of silicone usually has nano-scale protrusions and grooves. This microstructure prevents water droplets from forming a continuous contact surface when contacting the silicone surface, but instead forms a spherical roll, thereby effectively repelling water molecules. Silicone can also further enhance its hydrophobic properties by reducing surface tension. Organic fluorine compounds also have excellent hydrophobicity. Effect, due to the strong electronegativity of fluorine atoms, the bond energy of CF bonds is large and stable, the intermolecular interaction force is weak, and the distance between molecules is far, making it difficult for water molecules to form hydrogen bonds with fluorine-containing compounds, thereby achieving a hydrophobic effect. The present application forms a bactericidal layer by combining a bactericidal adjuvant on a coil substrate, and then forms a hydrophobic adjuvant on a nano-hydrophobic layer and combines it on the bactericidal layer by plasma vapor deposition, thereby forming a nano-hydrophobic and antibacterial functional film layer on the surface of the coil substrate. After testing, the nano-hydrophobic bactericidal coil can effectively reduce the number of bacteria under dynamic contact conditions, has excellent antibacterial effect, and significantly improves hydrophobic performance. At the same time, it can be repeatedly washed and is suitable for the application of textile products that fit the skin, such as masks and underpants;

[0023] The present application performs hydrophobic sterilization treatment on the coiled material by automatically unwinding the coiled material and combining it with plasma deposition, thereby forming a nano-hydrophobic and antibacterial film layer on the surface of the coiled material workpiece. Unlike other plasma chemical vapor deposition methods that cannot achieve whole-roll processing of the coiled material, the present application can greatly improve the film forming efficiency, the process is simple, practical and cost-effective, and realizes the long-lasting, safe and effective use of the coiled material. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0025] Figure 1 This is a schematic diagram of the structure of the nano-hydrophobic layer preparation assembly described in an embodiment of the present application;

[0026] Figure 2 This is a schematic diagram of the structure of the sterilization layer preparation assembly described in an embodiment of the present application;

[0027] Figure 3This is a graph showing the antibacterial test results of the nano hydrophobic bactericidal mask textile coil described in the embodiment of the present application;

[0028] Figure 4 This is a diagram of the appearance of the nano-hydrophobic sterilization mask textile coil described in the embodiment of the present application after being repeatedly washed 15 times.

[0029] Reference numerals:

[0030] 1- inert gas container; 2- cleaning container; 3- medicine container; 4- mixing pipeline; 5- mixing device; 6- vacuum chamber; 7- automatic unwinding device; 8A- first coil placing rack; 8B- second coil placing rack; 9- plasma generator; 10- vacuum pipeline; 11- vacuum pump group; 12- proportional butterfly valve; 13- medicine inlet valve; A1- first valve; A2- second valve; A3- third valve; 14- unwinding mechanism; 15- sterilization container; 16- rolling mill; 17- drying machine; 18- winding mechanism; 19- first roller; 20- second roller

[0031] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0033] In view of the technical problems existing in the above-mentioned prior art, the embodiments of the present application provide a nano-hydrophobic sterilization coil, comprising a coil substrate, a sterilization layer and a nano-hydrophobic layer;

[0034] The bactericidal layer is bonded to the coil substrate by a bactericidal auxiliary agent through a surface treatment process.

[0035] The nano hydrophobic layer is formed on the bactericidal layer by a plasma vapor deposition method using a hydrophobic auxiliary agent;

[0036] The bactericidal auxiliary agent includes a quaternary ammonium compound and a cross-linking agent;

[0037] The hydrophobic auxiliary agent is one of organic silicon or organic fluorine compounds.

[0038] The nano-hydrophobic sterilization coil of the present application is composed of a coil substrate, a sterilization layer and a nano-hydrophobic layer. The sterilization layer mainly uses quaternary ammonium compounds as sterilization ingredients. Quaternary ammonium compounds have significant sterilization effects. They mainly achieve sterilization by changing the permeability of microbial cell membranes, destroying enzyme systems and causing protein coagulation and denaturation. Silicone can achieve a hydrophobic effect through the special microstructure and chemical properties of its surface. The surface of silicone usually has nano-scale protrusions and grooves. This microstructure prevents water droplets from forming a continuous contact surface when contacting the silicone surface, but instead forms a spherical roll, thereby effectively repelling water molecules. Silicone can also further enhance its hydrophobic properties by reducing surface tension. Organic fluorine compounds also have excellent hydrophobicity. The effect is that due to the strong electronegativity of fluorine atoms, the bond energy of CF bonds is large and stable, the intermolecular interaction force is weak, and the distance between molecules is far, making it difficult for water molecules to form hydrogen bonds with fluorine-containing compounds, thereby achieving a hydrophobic effect. The present application forms a bactericidal layer by combining a bactericidal adjuvant with a coil substrate, and then forms a hydrophobic adjuvant on a nano-hydrophobic layer and combines it with the bactericidal layer through plasma vapor deposition, thereby forming a nano-hydrophobic and antibacterial functional film layer on the surface of the coil substrate. After testing, the nano-hydrophobic bactericidal coil can effectively reduce the number of bacteria under dynamic contact conditions, has excellent antibacterial effect, and significantly improves hydrophobic performance. At the same time, it can be repeatedly washed, and is suitable for use in textile products that fit the skin, such as masks and underpants.

[0039] As an implementation method of the present application, the quaternary ammonium compound is dodecyl dimethyl benzyl ammonium chloride compound, and the amount of the quaternary ammonium compound is 0.5-1.5% of the weight of the coil substrate; the cross-linking agent is silicon nitride, and the amount of the cross-linking agent is 0.1-0.4% of the weight of the coil substrate.

[0040] Specifically, after the dodecyl dimethyl benzyl ammonium chloride compound is adsorbed onto the surface of the bacteria, its hydrophobic group will be inserted into the lipid layer to change the permeability of the cell membrane, thereby causing leakage of intracellular substances, enzyme or protein denaturation, and ultimately affecting the cell metabolism process, ultimately leading to the death of the bacteria. The dodecyl dimethyl benzyl ammonium chloride compound will also interfere with the synthesis of nucleic acids and proteins, further inhibiting the growth and reproduction of bacteria, thereby achieving an excellent antibacterial effect.

[0041] In the specific implementation process, the sterilization layer can be prepared by dipping, coating or atomizing spraying.

[0042] As an implementation method of the present application, the hydrophobic auxiliary agent is one or more of 2-perfluorobutyl ethyl acrylate, 2-perfluorohexyl ethyl acrylate, 2-perfluorooctyl ethyl acrylate, trifluoropropyl methyl cyclotrisiloxane and hexamethyldisiloxane.

[0043] Preferably, the hydrophobic auxiliary agent is 2-perfluorobutyl ethyl acrylate, which is polymerized from 2-[perfluorobutyl]ethyl methacrylate monomers. Because it contains perfluorobutyl structural units, this structural unit can effectively prevent the penetration of water molecules, thereby providing excellent waterproof performance.

[0044] In a specific implementation process, the web substrate includes any one of fabric, plastic and fiber.

[0045] The embodiment of the present application also provides a system for preparing a nano hydrophobic sterilization coil, including a sterilization layer preparation component and a nano hydrophobic layer preparation component, such as Figure 2 As shown, the sterilization layer preparation assembly includes an unwinding mechanism 14, a sterilization container 15, a roller 16, a drying machine 17 and a winding mechanism 18 connected in sequence along the coil transmission direction. Figure 1 As shown, the nano-hydrophobic layer preparation component includes an inert gas container 1, a cleaning container 2, a medicine container 3, a mixing device 5 and a vacuum chamber body 6 for chemical vapor deposition, the winding mechanism 18 is connected to the vacuum chamber body 6, the inert gas container 1, the cleaning container 2, and the medicine container 3 are respectively connected to the mixing device 5 through a mixing pipeline 4, the outlet end of the mixing device 5 is connected to the vacuum chamber body 6, and an automatic winding and unwinding device 7 and a plasma generating device 9 are provided in the vacuum chamber body 6, the automatic winding and unwinding device 7 includes a first coil placement rack 8A for releasing coils and a second coil placement rack 8B for collecting coils, and the plasma generating device 9 is located between the first coil placement rack 8A and the second coil placement rack 8B.

[0046] As an implementation method of the present application, three first rollers 19 with the same structure and connected in sequence are provided in the sterilization container 15, one of the first rollers 19 is located below the liquid level in the sterilization container 15, and the other two first rollers 19 are located at the same height above the liquid level in the sterilization container 15, and the three first rollers 19 are arranged into an inverted isosceles triangle and are transmission-connected to the unwinding mechanism 14.

[0047] As an implementation mode of the present application, the rolling mill 16 includes two second rollers 20 respectively located at the upper and lower sides of the coil and close to each other for squeezing the surface of the passing coil, and the second roller 20 is transmission-connected to the first roller 19.

[0048] Specifically, the sterilization layer preparation assembly is used to dip and roll the coil substrate to form a sterilization layer. In the sterilization layer preparation assembly, the unwinding mechanism 14, the sterilization container 15, the roller mill 16, the dryer 17 and the winding mechanism 18 are arranged in sequence along the coil transmission direction. The sterilization container 15 contains a mixed solution of sterilization aids. The three first rollers 19 in the sterilization container 15 have the same structure and are connected in sequence, and are connected to the unwinding mechanism 14 and the second roller 20 in the roller mill 16 to realize the transmission of the coil. The unwinding mechanism 14 is composed of an unwinding reel, and the winding mechanism 18 is composed of a winding reel.

[0049] In the specific implementation process, the unwinding reel, the winding reel, the first roller 19 and the second roller 20 are all driven by corresponding motors and can rotate around their respective roller axes. The motors are electrically connected to a controller for controlling the start of the motors and adjusting the rotation speed of the motors.

[0050] As an implementable embodiment of the present application, the bottom end of the vacuum chamber body 6 is connected to a vacuum pipeline 10 connected to the interior of the vacuum chamber body 6, the other end of the vacuum pipeline 10 is connected to a vacuum pump group 11, and the vacuum pipeline 10 is provided with a proportional butterfly valve 12 for adjusting the vacuum degree.

[0051] In the specific implementation process, the inert gas container 1, the cleaning container 2, and the medicine container 3 are respectively provided with a first valve A1, a second valve A2, and a third valve A3 for controlling the flow direction of the gas in the container. The inert gas container 1 can be filled with nitrogen or argon, and the inert gas is used to promote the flow of the hydrophobic auxiliary agent steam into the vacuum chamber 6. The cleaning container 2 is filled with oxygen, which is used to clean the vacuum chamber 6 and the surface of the coil to ensure the quality of the coil.

[0052] Specifically, the mixing device 5 includes a container and a spiral pipeline arranged in the container, which is conducive to the full mixing of the gas. A drug inlet gas valve 13 is also provided at the connection between the bottom end of the container and the vacuum chamber body 6, and the drug inlet gas valve 13 is used to control the on-off of the gas entering the vacuum chamber body 6.

[0053] The embodiment of the present application also provides a method for preparing a nano hydrophobic sterilization coil, which adopts the above-mentioned nano hydrophobic sterilization coil preparation system and includes the following steps:

[0054] S1. Preparation of sterilization layer:

[0055] The coil base material is wound on the unwinding mechanism 14 and conveyed to the sterilization container 15 through the first roller 19, soaked in a sterilization auxiliary agent, squeezed and dried by a roller mill 16 and dried by a dryer 17, and then collected by a winding mechanism 18 to obtain a coil with a sterilization layer.

[0056] Specifically, the drying temperature in the dryer 17 is set to 60° C.-110° C. Through the cooperation of the unwinding mechanism 14 , the first roller 19 , the rolling machine 16 and the dryer 17 , the sterilization layer on the surface of the coil substrate can be quickly rolled.

[0057] S2. Preparation of nano hydrophobic layer:

[0058] S21, open the cleaning container 2 and inject cleaning gas into the vacuum chamber 6, place the coil with the sterilization layer on the automatic unwinding device 7, and make the coil with the sterilization layer pass through the plasma generating device 9 and be transported between the first coil placement rack 8A and the second coil placement rack 8B.

[0059] As an implementation method of the present application, the cleaning gas is oxygen, and the flow rate of oxygen is 100-200 sccm.

[0060] The coil is placed on the automatic unwinding device 7 to be transported between the first coil placement rack 8A and the second coil placement rack 8B, and plasma deposition is performed through the plasma generating device 9, which not only enables the processing of the entire coil but also greatly improves the film forming efficiency.

[0061] S22, stop injecting the cleaning gas, heat the hydrophobic additive in the medicine container 3, open the inert gas container 1 and the medicine container 3, and after forming a mixed gas through the mixing device 5, input it into the vacuum chamber 6, and start the plasma generating device 9 at the same time, so that the mixed gas forms plasma and is deposited on the surface of the coil with the sterilization layer to form a nano-hydrophobic layer, so as to obtain a nano-hydrophobic sterilization coil.

[0062] As an implementation method of the present application, when the hydrophobic additive in the medicine container 3 is heated, the heating temperature is controlled to be 140-200° C. After being heated at a high temperature of 140-200° C., the hydrophobic additive can form steam, which can be activated by the plasma generator 9 to form a plasma state after being mixed with the inert gas, and then deposited on the surface of the sterilization layer to form a nano-hydrophobic layer.

[0063] In the specific implementation process, after starting the plasma generator 9, the vacuum degree in the vacuum chamber 6 is controlled to be 130-170 mTorr, the frequency of the RF power supply of the plasma generator 9 is set to 11-15 MHz, and the RF power is 300-340 wf, so that the mixed gas is activated in the vacuum chamber 6 to form a plasma state and deposited on the surface of the coil for 15-18 minutes.

[0064] The present application uses a whole roll of coiled material for plasma chemical vapor deposition to form a nano-hydrophobic and antibacterial film layer on the surface of the coiled material workpiece. Different from other plasma chemical vapor deposition methods that cannot achieve whole-roll processing of the coiled material, the present application can greatly improve the scope of application of incoming materials and film-forming efficiency. The entire preparation process of the nano-hydrophobic layer only takes 40-60 minutes, and the process is simple and practical.

[0065] The above technical solution of the present application is described in detail below in conjunction with specific embodiments.

[0066] Example 1

[0067] This embodiment takes the preparation of a nano-hydrophobic sterilization mask textile coil as an example, and obtains a mask textile coil with both antibacterial and hydrophobic properties without affecting the technical parameters of the medical protective mask, which can be used once or repeatedly.

[0068] The nano-hydrophobic sterilizing mask textile coil adopts a polyester fiber substrate, and a sterilizing layer and a nano-hydrophobic layer are formed on the polyester fiber substrate. The sterilizing layer is prepared by mixing a dodecyl dimethyl benzyl ammonium chloride compound and a cross-linking agent silicon nitride and impregnating and rolling. The weight ratio of the dodecyl dimethyl benzyl ammonium chloride compound to the polyester fiber substrate is 0.8%, and the weight ratio of silicon nitride to the polyester fiber substrate is 0.2%. The nano-hydrophobic layer is 2-perfluorobutyl ethyl acrylate deposited on the surface of the sterilizing layer by plasma chemical vapor deposition.

[0069] The nano hydrophobic sterilization mask textile coil is prepared, specifically comprising the following steps:

[0070] The polyester fiber substrate is wound on the unwinding mechanism 14 and conveyed to the sterilization container 15 through the cooperation of three first rollers 19 for soaking, and then conveyed to the roller mill 16, and the surface of the coiled material passing through is squeezed and dried by the second roller 20, and then dried by the dryer 17, and the drying temperature is set to 70°C, and then collected by the winding mechanism 18 to obtain the polyester fiber coil with the sterilization layer;

[0071] Fill the inert gas container 1 with argon gas, fill the clean container 2 with oxygen, add the aqueous solution of 2-perfluorobutyl ethyl acrylate into the reagent container 3, and heat to 180° C. to form steam;

[0072] The coil with the sterilization layer is placed on the automatic unwinding device 7 in the vacuum chamber 6, the second valve A2 and the drug inlet valve 13 are opened, the first valve A1 and the third valve A3 are closed, oxygen is introduced into the vacuum chamber 6, and the oxygen flow rate is 100-200sccm. At the same time, the automatic unwinding device 7 is started, so that the coil passes through the roller of the automatic unwinding device 7 and the positive and negative electrode plates of the plasma generating device 9 in sequence, and is thus transported between the first coil placement rack 8A and the second coil placement rack 8B, wherein the spacing between the positive and negative electrode plates is 90-100cm;

[0073] The second valve A2 is closed, and the first valve A1 and the third valve A3 are opened, so that the argon gas in the inert gas container 1 and the 2-perfluorobutyl ethyl acrylate vapor in the reagent container 3 enter the mixing device 5 through the mixing pipeline 4 and are fully mixed, and then transported into the vacuum chamber 6. The flow rate of the mixed gas is controlled to be 20 sccm;

[0074] The plasma generator 9 is started so that the mixed gas is activated in the vacuum chamber 6 to form a plasma state, and is deposited on the surface of the sterilization layer of the coil to form a nano-hydrophobic layer, thereby obtaining a nano-hydrophobic sterilization mask textile coil, wherein the vacuum degree in the vacuum chamber 6 is controlled to be 150 mTorr, the frequency of the radio frequency power supply of the plasma generator 9 is 13.56 MHz, the radio frequency power is 320 wf, and the deposition time is 17 min.

[0075] Experimental example

[0076] (I) Antibacterial effect test

[0077] The antibacterial effect of the nano-hydrophobic bactericidal mask textile coil obtained in Example 1 was tested, and a 50 mm × 50 mm sample was sealed and sent for sampling. The antibacterial test was performed according to the ASTM E2149-13a standard, and the following results were obtained: Figure 3 The test report results shown.

[0078] Depend on Figure 3 It can be seen that the inhibition rate of this sample on Escherichia coli can reach more than 99.99%, indicating that it can effectively inhibit the proliferation of Escherichia coli and has a good attenuation and sterilization effect.

[0079] (II) Hydrophobicity test

[0080] Referring to the standard "AATCC22: Water Repellency Test-Spray Method", the hydrophobicity of the nano-hydrophobic sterilizing mask textile coil obtained in Example 1 was tested, specifically: the nano-hydrophobic sterilizing mask textile coil was made into a 50mm×50mm sample, and 250mL of deionized water at a temperature of 25±3°C was placed in a container. The deionized water was sprayed on the tensioned sample surface, and the wetting pattern on the sample surface was observed and compared with the standard pattern. The final result evaluation score was 100 points, indicating that the sample surface was not wetted at all, and the nano-hydrophobic sterilizing mask textile coil had good hydrophobic properties.

[0081] (III) Durability test

[0082] The nano hydrophobic antibacterial mask textile coil obtained in Example 1 was pressed and washed (not rubbed) for 3 minutes in a mixture of laundry detergent and clean water with a mass ratio of 1:20, then soaked for 2 minutes, and then rinsed with clean water (not rubbed) for 1.5 minutes, squeezed out the water, and dried at 60°C. After repeating the above operation for 15 cycles, the appearance of the sample was observed. The appearance of the sample is shown in the figure below. Figure 4 shown.

[0083] Depend on Figure 4 It can be seen that the sample can basically maintain its original state in appearance, which shows that the obtained nano-hydrophobic bactericidal mask textile coil has good durability and can be reused many times.

[0084] The above description is only an optional embodiment of the present application, and does not limit the patent scope of the present application. All equivalent structural transformations made by using the contents of the present application specification and drawings under the inventive concept of the present application, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A nano hydrophobic sterilization coil, characterized in that: It includes a coil substrate, a bactericidal layer and a nano-hydrophobic layer; The bactericidal layer is bonded to the coil substrate by a bactericidal auxiliary agent through a surface treatment process. The nano hydrophobic layer is formed on the bactericidal layer by a plasma vapor deposition method using a hydrophobic auxiliary agent; The bactericidal auxiliary agent includes a quaternary ammonium compound and a cross-linking agent; The hydrophobic auxiliary agent is one of organic silicon or organic fluorine compounds.

2. The nano hydrophobic sterilization coil according to claim 1, characterized in that: The quaternary ammonium compound is dodecyl dimethyl benzyl ammonium chloride compound, and the dosage of the quaternary ammonium compound is 0.5-1.5% of the weight of the coil base material; the crosslinking agent is silicon nitride, and the dosage of the crosslinking agent is 0.1-0.4% of the weight of the coil base material.

3. The nano hydrophobic sterilization coil according to claim 1, characterized in that: The hydrophobic auxiliary agent is one or more of 2-perfluorobutyl ethyl acrylate, 2-perfluorohexyl ethyl acrylate, 2-perfluorooctyl ethyl acrylate, trifluoropropyl methyl cyclotrisiloxane and hexamethyldisiloxane.

4. A system for preparing the nano hydrophobic sterilization coil according to any one of claims 1 to 3, characterized in that: It includes a sterilization layer preparation component and a nano-hydrophobic layer preparation component. The sterilization layer preparation component includes an unwinding mechanism, a sterilization container, a roller, a dryer and a winding mechanism connected in sequence along the coil transmission direction. The nano-hydrophobic layer preparation component includes an inert gas container, a cleaning container, a medicine container, a mixing device and a vacuum chamber for chemical vapor deposition. The winding mechanism is connected to the vacuum chamber. The inert gas container, the cleaning container and the medicine container are respectively connected to the mixing device through a mixing pipeline. The outlet end of the mixing device is connected to the vacuum chamber. An automatic unwinding device and a plasma generating device are provided in the vacuum chamber. The automatic unwinding device includes a first coil placement rack for releasing the coil and a second coil placement rack for collecting the coil. The plasma generating device is located between the first coil placement rack and the second coil placement rack.

5. The system for preparing the nano hydrophobic sterilization coil according to claim 4, characterized in that: The sterilization container is provided with three first rollers with the same structure and connected in sequence, one of the first rollers is located below the liquid level in the sterilization container, and the other two first rollers are located at the same height above the liquid level in the sterilization container. The three first rollers are arranged into an inverted isosceles triangle and are transmission-connected to the unwinding mechanism.

6. The system for preparing the nano hydrophobic bactericidal coil according to claim 5, characterized in that: The rolling mill comprises two second rollers which are respectively located at the upper and lower sides of the coil and close to each other for pressing the surface of the passing coil, and the second rollers are drivingly connected to the first roller.

7. The system for preparing the nano hydrophobic bactericidal coil according to claim 4, characterized in that: The bottom end of the vacuum chamber body is connected to a vacuum pipeline communicating with the interior of the vacuum chamber body, the other end of the vacuum pipeline is connected to a vacuum pump group, and a proportional butterfly valve for adjusting the vacuum degree is provided on the vacuum pipeline.

8. A method for preparing a nano hydrophobic sterilization coiled material, using the system for preparing a nano hydrophobic sterilization coiled material according to any one of claims 4 to 7, characterized in that: The steps include: The coil substrate is wound on the unwinding mechanism and conveyed to the sterilization container by the first roller, soaked in a sterilization auxiliary agent, squeezed and dried by a roller mill and dried by a dryer, and then collected by a winding mechanism to obtain a coil with a sterilization layer; Open the cleaning container and inject the cleaning gas into the vacuum chamber, place the coil with the sterilization layer on the automatic unwinding device, and make the coil with the sterilization layer pass through the plasma generating device 9 and be transported between the first coil placing rack and the second coil placing rack; Stop injecting the cleaning gas, heat the hydrophobic additive in the medicine container, open the inert gas container and the medicine container, form a mixed gas through a mixing device, and then input it into the vacuum chamber body. At the same time, start the plasma generating device to make the mixed gas form plasma and deposit on the surface of the coil with the sterilization layer to form a nano-hydrophobic layer, so as to obtain a nano-hydrophobic sterilization coil.

9. The method for preparing the nano hydrophobic sterilization coil according to claim 8, characterized in that: The cleaning gas is oxygen gas, and the flow rate of the cleaning gas is 100-200 sccm.

10. The method for preparing the nano hydrophobic sterilization coil according to claim 8, characterized in that: In the step of heating the hydrophobic auxiliary agent in the medicine container, the heating temperature is 140-200°C.

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