CN112044181A - Sterilizing and disinfecting air filter element and preparation method thereof - Google Patents
Sterilizing and disinfecting air filter element and preparation method thereof Download PDFInfo
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- CN112044181A CN112044181A CN202010990660.4A CN202010990660A CN112044181A CN 112044181 A CN112044181 A CN 112044181A CN 202010990660 A CN202010990660 A CN 202010990660A CN 112044181 A CN112044181 A CN 112044181A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0001—Making filtering elements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0027—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
- B01D46/0028—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions provided with antibacterial or antifungal means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0027—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
- B01D46/0036—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions by adsorption or absorption
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/52—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material
- B01D46/521—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material using folded, pleated material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/04—Additives and treatments of the filtering material
- B01D2239/0442—Antimicrobial, antibacterial, antifungal additives
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
- B01D2239/065—More than one layer present in the filtering material
Abstract
The invention belongs to the technical field of air filtration and purification, and particularly relates to a sterilization and disinfection air filter element which comprises a filter element body, wherein the filter element body comprises a sheet-shaped filter paper formed by laminating a plurality of layers of composite structures, and the sheet-shaped filter paper sequentially comprises a sterilization layer, a filter layer and a protective layer from an air inlet surface to an air outlet surface; the sterilization layer is made of reticular fibers fixedly carried with quaternary ammonium salt polymers, so that harmful substances such as bacteria, toxins and the like in the filtered air containing harmful gases are captured and adsorbed, and the harmful substances are decomposed and mineralized into carbon dioxide and water. The invention also relates to a preparation method of the sterilization and disinfection air filter element, which is characterized in that the reticular fiber is used as a carrier of the quaternary ammonium salt polymer, and is subjected to cooking treatment and activation treatment, and then is soaked in the solid carrying liquid containing the quaternary ammonium salt polymer, so that the quaternary ammonium salt polymer is firmly carried in the surface microporous structure made of the reticular fiber, and the air filter element has the characteristics of strong stability, good sterilization and disinfection effect, long service life, no residue and the like.
Description
Technical Field
The invention belongs to the technical field of air filtration and purification, and particularly relates to a sterilization and disinfection air filter element and a preparation method thereof.
Background
The filtering material has wide application, and can be widely applied to the industries of chemical industry, electric power, metallurgy, petroleum, electronic and electric appliances, machinery and the like; the most common air filter for automobiles is used for filtering air entering an engine, blocking mechanical impurity components such as particles and particles in the air, preventing the components from entering gasoline, diesel oil or engine oil and ensuring the normal work of the engine. A large amount of filter materials are used for an air conditioning system, the pollution to the environment and the atmosphere is serious at present, the human health is greatly harmed, the air filter materials can adsorb various harmful particles in the air, the air is prevented from entering the life or working environment of people, the suction of harmful substances such as particles in the lung of the human body is reduced, the life quality of the people is improved, and the occurrence of diseases is reduced. And the other part is used for water filtration and sewage treatment and is used for separating heavy metals or harmful components in water.
Most of the commercially available air filter elements for removing harmful gases have double-effect or multi-effect functions, and the principle is that active carbon or other substances with adsorption function are used as a medium to specifically absorb the harmful gases in the air, so that the content of the harmful gases in the filtered air is reduced. However, the existing air filter element for adsorbing harmful gas has a disadvantage that: when air filter along with the extension of live time, can reach the state with these harmful gas adsorption saturation, at this moment, air filter's filtering capability reduces by a wide margin, even falls to for zero to can appear air filter self and outwards release adsorbed harmful gas, cause secondary pollution, reduce the use of product and experience the sense.
Disclosure of Invention
The invention aims to provide a sterilization and disinfection air filter element, and aims to solve the technical problems that in the prior art, an air filter element adopts active carbon or other substances with adsorption effects as media to adsorb harmful gases, and the adsorbed harmful gases are released outwards after adsorption saturation is avoided.
In order to achieve the above object, a first object of the present invention is to provide a sterilizing air filter element, which comprises a filter element body; optionally, the filter element body comprises a sheet-shaped filter paper formed by laminating a plurality of layers of composite structures, the sheet-shaped filter paper sequentially comprises a sterilizing layer, a filtering layer and a protective layer from an air inlet surface to an air outlet surface, and the sterilizing layer is made of mesh fibers fixedly carrying quaternary ammonium salt polymers. The sterilization layer is arranged to realize the adsorption and decomposition of harmful gases in the filtered air, so as to achieve the purposes of sterilization and disinfection and no secondary pollution.
Optionally, the sheet filter paper is arranged in a folded-to-W configuration. The structure design increases the adsorption and filtration efficiency of unit area.
Optionally, the layers of the sheet-shaped filter paper are integrated by a processing mode of ultrasonic hot pressing.
Optionally, the fixed surface and/or the bottom surface of the sheet filter paper is/are glued, and the glue lines formed after gluing are W-shaped glue lines.
Optionally, the filter paper further comprises a frame body, wherein the frame body is arranged on the side surface of the sheet-shaped filter paper; the sheet filter paper is seamlessly adhered to the frame body in a hot melt adhesive mode. The structural design plays the roles of strengthening the strength of the flaky filter paper and facilitating the installation of the bacteria disinfection air filter element.
Optionally, a sealing member is disposed on a side of the frame body facing away from the sheet-shaped filter paper. This structural design plays the gas tightness after reinforcing this fungus disinfection air filter installs.
One or more technical schemes in the sterilization and disinfection air filter element provided by the embodiment of the invention at least have one of the following technical effects:
1. through the sterilization layer arranged on the air inlet surface of the air filter element, the quaternary ammonium salt polymer is immobilized in a surface microporous structure made of the mesh fibers through treatment between the mesh fibers and the immobilized liquid containing the quaternary ammonium salt polymer, so that the bacteria, the toxin and other harmful substances in the filtered air containing harmful gas are captured and adsorbed, and the internal part is decomposed and mineralized into carbon dioxide and water.
2. The filter layer adopts an HEPA layer, so that fine particles such as automobile exhaust, PM2.5, heavy metals and the like can be effectively filtered, the filtering effect reaches more than 97%, and the filtering efficiency of the air filter element is further enhanced; in addition, the protective layer is made of water-repellent fiber materials, so that the water-proof and air-permeable effects are guaranteed, the service life is long, and the sterilization and disinfection effects of the sterilization layer can be further enhanced.
The second purpose of the invention is to provide a preparation method of the sterilizing and disinfecting air filter element, which comprises the following steps:
s1: preparing a solid carrier liquid containing a quaternary ammonium salt polymer component;
s2: fixing the quaternary ammonium salt polymer in the solid carrier liquid obtained in the step S1 into the surface microporous structure of the reticular fibers to prepare the sterilizing layer;
s3: the sterilization layer, the filter layer and the protective layer are sequentially stacked, a coiled material is formed through ultrasonic processing, the coiled material is cut into the coiled material specification required by the sheet filter paper through a slitting machine, and the W-shaped structure of the coiled sheet filter paper is manufactured through the wrinkle processing of a non-woven fabric folding machine to manufacture the sheet filter paper with the W-shaped structure;
s4: according to the specific appearance structure of the air filter element, cutting the W-shaped sheet filter paper obtained in the step S3 by selecting a shaping die and a cutting die which meet the requirements to obtain block-shaped sheet filter paper with specific size, and gluing the fixed surface and/or the bottom surface of the block-shaped sheet filter paper to obtain the block-shaped sheet filter paper with the preset break angle parameter and shaping; the frame is adhered to the periphery of the blocky sheet body through hot melt adhesive to manufacture the filter element body.
Optionally, in step S1, the solid carrier liquid is an ethanol aqueous solution containing a quaternary ammonium salt polymer, iodide, a butyric acid acetate polymer and a stabilizer; the iodide is NaI or KI, and the stabilizer is one or a mixture of acetic acid, oxalic acid, citric acid, phosphoric acid and malic acid;
s11: ethanol and water are mixed according to the volume ratio of 1: 3-1: 4 to prepare an ethanol water solution;
s12: the quaternary ammonium salt polymer, the iodide, the acetic acid butyric acid polymer, the stabilizer and the ethanol water solution are mixed according to the mass part ratio (0.1-1.0): (0.1-2.0): (0.1-4.0): (0.1-1.0): (92.0-99.6) mixing in proportion, stirring at a stirring speed of 50-100 r/min to obtain a liquid, pumping the liquid into a refrigerating tank through a self-priming pump, and cooling at 15-20 ℃ for 2-5 min to obtain the solid carrier liquid containing the quaternary ammonium salt polymer component.
Optionally, step S2 includes:
s21: the reticular fiber is made of polyester fiber, is dried for 1 to 5 hours at the temperature of between 100 and 200 ℃, is taken out and is steamed in boiling water;
s22: placing the reticular fiber treated in the step S21 in an activating solution, carrying out an activation reaction under the conditions of stirring, shaking or ultrasound, taking out the reticular fiber after the reaction, washing the reticular fiber with distilled water, and drying; wherein the activating solution is an alkali solution containing one or more of sodium hydroxide, potassium hydroxide and sodium carbonate, and the mass part ratio of the alkali mixture to water is (1-10) to (90-99);
s23: and (4) soaking the reticular fibers processed in the step (S22) in the solid carrier liquid prepared in the step (S1), carrying out solid carrier reaction under the conditions of stirring, shaking or ultrasound, taking out the reticular fibers after the reaction is finished, and drying to obtain the bactericidal layer.
Optionally, in the solid-supported reaction process of step S23, the mass portion ratio of the mesh fibers to the solid-supported liquid is 1: 50-1: 200, the reaction temperature is 50-90 ℃, and the reaction time is 20-60 min; in the drying process after the immobilization reaction in the step S23, the drying temperature is 30-50 ℃, and the drying time is 2-5 h.
One or more technical schemes in the preparation method of the sterilization and disinfection air filter element provided by the embodiment of the invention at least have one of the following technical effects:
according to the preparation method, the reticular fiber is used as a carrier of the quaternary ammonium salt polymer, and is subjected to cooking treatment and activation treatment, and then the reticular fiber is soaked in the immobilization liquid containing the quaternary ammonium salt polymer, so that the quaternary ammonium salt polymer is firmly immobilized in a surface microporous structure made of the reticular fiber, and the quaternary ammonium salt polymer is directly contacted with bacteria and toxins in harmful gases, so that harmful substances such as the bacteria and the toxins are captured and adsorbed, and the internal decomposition and mineralization are carried out to form carbon dioxide and water; the preparation method of the invention ensures that the air filter element has the characteristics of strong stability, good sterilization and disinfection effects, long service life, no residue and the like, solves the defect that the air filter element in the prior art is easy to adsorb saturated and release harmful substances outwards along with the prolonging of the service life, achieves the aim of thorough sterilization and disinfection, and further strengthens the filtering effect of the air filter element.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a sterilization and disinfection air filter element provided by an embodiment of the invention.
Fig. 2 is an exploded schematic view of a sterilization and disinfection air filter element according to an embodiment of the present invention.
Fig. 3 is a schematic structural view of a frame body outer side adhesion sealing member according to an embodiment of the present invention.
FIG. 4 is a schematic cross-sectional view of a sheet-like filter paper according to an embodiment of the present invention;
FIG. 5 is an enlarged view of a portion of FIG. 2 labeled A;
FIG. 6 is a flow chart of a method for manufacturing the sterilizing air filter element according to the present invention;
wherein, in the figures, the respective reference numerals:
1-filter element body, 11-sheet filter paper, 111-sterilization layer, 112-filter layer, 113-protective layer, 12-frame body and 121-sealing component.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be illustrative of the embodiments of the present invention, and should not be construed as limiting the invention.
In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. Specific meanings of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.
In one embodiment of the present invention, as shown in fig. 1-2, a germicidal air filter is provided, including a filter body 10. Preferably, the filter element body 10 includes a sheet-shaped filter paper 11 formed by stacking a plurality of layers of composite structures, and further includes a frame 12. Specifically, the frame body 12 is arranged on the side surface of the sheet-shaped filter paper 11, and the sheet-shaped filter paper 11 is seamlessly adhered to the frame body 12 in a hot melt manner; through framework 12 sets up and plays the reinforcement the intensity of slice filter paper 11 and the purpose of being convenient for this fungus disinfection air filter installation, framework 12 has strengthened the stability of this disinfection air filter product of disinfecting, has strengthened the support hardness greatly, non-deformable, durable. In the concrete practice, this disinfection air filter that disinfects can apply on vehicle air conditioner, still can be used in on domestic clarifier or other air filtration equipment, and according to different product structures needs, this disinfection air filter that disinfects can design and be massive, tube-shape or triangle-shaped etc. a great deal of structures to it is required to coincide air filtration equipment.
As shown in fig. 3, a sealing member 121 is disposed on a side of the frame 12 away from the sheet-shaped filter paper 11 to enhance the air tightness after the bacteria disinfection air filter cartridge is installed. Specifically, the sealing member 121 may be made of sponge or rubber, and is used to seal the frame 12 to prevent air from leaking from the frame, so as to improve the filtering efficiency and filtering accuracy of the sterilizing air filter element.
As shown in fig. 4, the sheet-shaped filter paper 11 sequentially includes a sterilization layer 111, a filter layer 112 and a protection layer 113 from an air inlet surface to an air outlet surface, the sterilization layer 111 is made of mesh fibers fixedly carrying quaternary ammonium salt polymers, and the layers of the sheet-shaped filter paper 11 are integrated by a processing method of ultrasonic hot pressing. The sterilization layer 111 is formed by processing the reticular fibers and the solid-carrying liquid containing the quaternary ammonium salt polymer component, so that the quaternary ammonium salt polymer is immobilized in the surface microporous structure made of the reticular fibers, harmful substances such as bacteria and toxin in the filtered air containing harmful gas are captured and adsorbed, and the internal part is decomposed and mineralized into carbon dioxide and water, so that compared with the existing air filter element, the sterilization layer 111 only has an adsorption function, adsorption saturation is easy to occur along with the prolonging of the service time, the harmful substances are released outwards, and the service life of the product is greatly prolonged.
Furthermore, the filter layer adopts an HEPA layer, so that fine particles such as automobile exhaust, PM2.5, heavy metals and the like can be effectively filtered, the filtering effect reaches more than 97%, and the filtering efficiency of the air filter element is further enhanced; in addition, the protective layer is made of water-repellent fiber materials, so that the water-proof and air-permeable effects are guaranteed, the service life is long, and the sterilization and disinfection effects of the sterilization layer can be further enhanced.
As shown in FIG. 5, the sheet-like filter paper 11 is arranged in a folded-to-W configuration. This structural design greatly increased with the area of contact of air, can be better filter the harmful substance in the air to play more efficient antibacterial action, increase unit area's absorption, filtration efficiency. Furthermore, in order to better fix the folded sheet-shaped paper layer 11 without extending along the shape before the folded sheet-shaped paper layer is restored and to meet the specific technical parameters of the air filter element, glue is applied to the fixed surface and/or the bottom surface of the sheet-shaped filter paper 11, and the glue lines formed after the glue is applied are W-shaped glue lines.
The second objective of the invention is to provide a preparation method of the sterilizing air filter element, as shown in fig. 6, the mesh-shaped fiber is used as the carrier of the quaternary ammonium salt polymer, and is subjected to cooking treatment and activation treatment, and then the mesh-shaped fiber is soaked in the solid carrier liquid containing the quaternary ammonium salt polymer, so that the quaternary ammonium salt polymer is firmly and fixedly carried in the surface microporous structure made of the mesh-shaped fiber, and the quaternary ammonium salt polymer is directly contacted with bacteria and toxin in harmful gas, so that harmful substances such as bacteria and toxin are captured and adsorbed, and the internal decomposition and mineralization are carried out to form carbon dioxide and water; the preparation method of the invention ensures that the air filter element has the characteristics of strong stability, good sterilization and disinfection effects, long service life, no residue and the like, solves the defect that the air filter element in the prior art is easy to adsorb saturated and release harmful substances outwards along with the prolonging of the service life, achieves the aim of thorough sterilization and disinfection, and further strengthens the filtering effect of the air filter element.
Preparation method 1
The preparation method of the sterilization and disinfection air filter element comprises the following steps:
s1: preparing a solid carrier liquid containing a quaternary ammonium salt polymer component; specifically, the solid carrier liquid is an ethanol water solution containing a quaternary ammonium salt polymer, iodide, an acetic acid butyric acid polymer and a stabilizer; wherein the quaternary ammonium salt polymer is 3- (trimethoxysilyl) propyl dodecyl dimethyl ammonium chloride, the iodide is NaI, and the stabilizer is acetic acid; the specific preparation process comprises the following steps:
s11: preparing ethanol water solution by mixing ethanol and water according to the volume ratio of 1: 3;
s12: 3- (trimethoxysilyl) propyl dodecyl dimethyl ammonium chloride, NaI, an acetic acid butyric acid polymer, acetic acid and an ethanol aqueous solution according to the mass part ratio of 0.3: 0.2: 0.2: 0.3: mixing the components in a ratio of 99, stirring the mixture at a stirring speed of 60r/min to obtain a liquid, pumping the liquid into a refrigerating tank through a self-sucking pump, and cooling the liquid for 3min at a temperature of between 15 and 20 ℃ to obtain the solid carrier liquid containing the quaternary ammonium salt polymer component.
S2: fixing the quaternary ammonium salt polymer in the solid carrier liquid obtained in the step S1 into the surface microporous structure of the reticular fibers to prepare the sterilizing layer; specifically, the reticular fibers are made of polyester fibers, the activating solution is an alkali solution containing sodium hydroxide, and the mass part ratio of the mixture of alkali to water is 4: 96;
the specific preparation process comprises the following steps:
s21: firstly, drying the reticular fibers at 120 ℃ for 2h, taking out the reticular fibers, and then cooking the reticular fibers in boiling water;
s22: placing the reticular fiber treated in the step S21 in an activating solution, carrying out an activation reaction under the conditions of stirring, shaking or ultrasound, taking out the reticular fiber after the reaction, washing the reticular fiber with distilled water, and drying; the purpose of the activation reaction is to increase the number of oxygen-containing functional groups (hydroxyl and carboxyl) on the surface of the reticular fibers, so that more quaternary ammonium salt polymer can be bonded on the surface of the reticular fibers;
s23: and (4) soaking the reticular fibers processed in the step (S22) in the solid carrier liquid prepared in the step (S1), carrying out solid carrier reaction under the conditions of stirring, shaking or ultrasound, taking out the reticular fibers after the reaction is finished, and drying to obtain the bactericidal layer. For the solid carrier liquid after the reaction is finished, the cyclic use of the high-iodine solid carrier liquid can be realized by supplementing 3- (trimethoxysilyl) propyl dodecyl dimethyl ammonium chloride, NaI, acetic acid butyric acid polymer, acetic acid and ethanol aqueous solution.
In the solid-supported reaction process of step S23, the mass ratio of the mesh fibers to the solid-supported liquid is 1:50, the reaction temperature is 60 ℃, and the reaction time is 30 min; in the drying process after the immobilization reaction in step S23, the drying temperature was 30 ℃. After the activation reaction is finished, alkali and water consumed by the reaction are supplemented, so that the activation solution can be recycled.
S3: the sterilization layer, the filter layer and the protective layer are sequentially stacked, a coiled material is formed through ultrasonic processing, the coiled material is cut into the coiled material specification required by the sheet filter paper through a slitting machine, and the W-shaped structure of the coiled sheet filter paper is manufactured through the wrinkle processing of a non-woven fabric folding machine to manufacture the sheet filter paper with the W-shaped structure;
s4: according to the specific appearance structure of the air filter element, cutting the W-shaped sheet filter paper obtained in the step S3 by selecting a shaping die and a cutting die which meet the requirements to obtain block-shaped sheet filter paper with specific size, and gluing the fixed surface and/or the bottom surface of the block-shaped sheet filter paper to obtain the block-shaped sheet filter paper with the preset break angle parameter and shaping; the frame is adhered to the periphery of the blocky sheet body through hot melt adhesive to manufacture the filter element body.
The filter element body obtained by the preparation method is placed at 10m3In a closed space, staphylococcus is sprayed and dyed in the air manually, after the adsorption time is 24 hours, the average killing rate of the staphylococcus is tested to be 98.6 percent, and the sterilization and disinfection air filter core is shown to have high-efficiency air sterilization and disinfection performance.
Preparation method II
The preparation method of the sterilizing and disinfecting air filter element comprises the following steps:
s1: preparing a solid carrier liquid containing a quaternary ammonium salt polymer component; specifically, the solid carrier liquid is an ethanol water solution containing a quaternary ammonium salt polymer, iodide, an acetic acid butyric acid polymer and a stabilizer; wherein the quaternary ammonium salt polymer is 3- (trimethoxysilyl) propyl dodecyl dimethyl ammonium chloride, the iodide is KI, and the stabilizer is oxalic acid; the specific preparation process comprises the following steps:
s11: preparing ethanol water solution by mixing ethanol and water according to the volume ratio of 1: 3;
s12: 3- (trimethoxysilyl) propyl tetradecyl dimethyl ammonium chloride, KI, an acetic acid butyric acid polymer, oxalic acid and an ethanol aqueous solution according to the mass part ratio of 0.9: 1.8: 3.6: 0.9: and mixing the components in a ratio of 92.8, stirring the mixture at a stirring speed of 90r/min to obtain a liquid, pumping the liquid into a refrigerating tank through a self-sucking pump, and cooling the liquid for 5min at the temperature of between 15 and 20 ℃ to obtain the solid carrier liquid containing the quaternary ammonium salt polymer component.
S2: fixing the quaternary ammonium salt polymer in the solid carrier liquid obtained in the step S1 into the surface microporous structure of the reticular fibers to prepare the sterilizing layer; specifically, the reticular fiber is made of polyester fiber, the activating solution is alkaline solution containing potassium hydroxide, and the mass part ratio of the mixture of alkali and water is 10: 90;
the specific preparation process comprises the following steps:
s21: firstly, drying the reticular fiber at 100 ℃ for 5h, taking out the reticular fiber, and then cooking the reticular fiber in boiling water;
s22: placing the reticular fiber treated in the step S21 in an activating solution, carrying out an activation reaction under the conditions of stirring, shaking or ultrasound, taking out the reticular fiber after the reaction, washing the reticular fiber with distilled water, and drying; the purpose of the activation reaction is to increase the number of oxygen-containing functional groups (hydroxyl and carboxyl) on the surface of the reticular fibers, so that more quaternary ammonium salt polymer can be bonded on the surface of the reticular fibers;
s23: and (4) soaking the reticular fibers processed in the step (S22) in the solid carrier liquid prepared in the step (S1), carrying out solid carrier reaction under the conditions of stirring, shaking or ultrasound, taking out the reticular fibers after the reaction is finished, and drying to obtain the bactericidal layer. And for the solid carrier liquid after the reaction is finished, the cyclic use of the high-iodine solid carrier liquid can be realized by supplementing 3- (trimethoxysilyl) propyltetradecyldimethylammonium chloride, KI, acetic acid butyric acid polymer, oxalic acid and ethanol aqueous solution.
In the solid-supported reaction process of step S23, the mass portion ratio of the reticular fibers to the solid-supported liquid is 1:100, the reaction temperature is 80 ℃, and the reaction time is 50 min; in the drying process after the immobilization reaction in step S23, the drying temperature was 50 ℃, and the drying time was 3 hours. After the activation reaction is finished, alkali and water consumed by the reaction are supplemented, so that the activation solution can be recycled.
S3: the sterilization layer, the filter layer and the protective layer are sequentially stacked, a coiled material is formed through ultrasonic processing, the coiled material is cut into the coiled material specification required by the sheet filter paper through a slitting machine, and the W-shaped structure of the coiled sheet filter paper is manufactured through the wrinkle processing of a non-woven fabric folding machine to manufacture the sheet filter paper with the W-shaped structure;
s4: according to the specific appearance structure of the air filter element, cutting the W-shaped sheet filter paper obtained in the step S3 by selecting a shaping die and a cutting die which meet the requirements to obtain block-shaped sheet filter paper with specific size, and gluing the fixed surface and/or the bottom surface of the block-shaped sheet filter paper to obtain the block-shaped sheet filter paper with the preset break angle parameter and shaping; the frame is adhered to the periphery of the blocky sheet body through hot melt adhesive to manufacture the filter element body.
The filter element body obtained by the preparation method is placed at 10m3In a closed space, staphylococcus is sprayed and dyed in the air manually, after the adsorption time is 24 hours, the average killing rate of the staphylococcus is tested to be 99.6 percent, and the sterilization and disinfection air filter core is shown to have high-efficiency air sterilization and disinfection performance.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A sterilization and disinfection air filter element comprises a filter element body; the method is characterized in that: the filter element body comprises a sheet filter paper formed by stacking a plurality of layers of composite structures, the sheet filter paper sequentially comprises a sterilizing layer, a filter layer and a protective layer from an air inlet surface to an air outlet surface, and the sterilizing layer is made of net-shaped fibers fixedly carrying quaternary ammonium salt polymers.
2. A sterilizing air filter element according to claim 1 wherein: the sheet filter paper is arranged in a W-shaped structure in a folded mode.
3. A sterilizing air filter element according to claim 2 wherein: the layers of the flaky filter paper are integrated by adopting a processing mode of ultrasonic hot pressing.
4. A sterilizing air filter element according to claim 2 wherein: and gluing the fixed surface and/or the bottom surface of the flaky filter paper, wherein the glue line formed after gluing is a W-shaped glue line.
5. A sterilizing air filter element according to claim 1 wherein: the frame body is arranged on the side surface of the sheet filter paper; the sheet filter paper is seamlessly adhered to the frame body in a hot melt adhesive mode.
6. A sterile air filter cartridge according to claim 5, wherein: one side of the frame body, which is far away from the sheet filter paper, is provided with a sealing component.
7. A preparation method of a sterilization and disinfection air filter element is characterized by comprising the following steps: the method comprises the following steps:
s1: preparing a solid carrier liquid containing a quaternary ammonium salt polymer component;
s2: fixing the quaternary ammonium salt polymer in the solid carrier liquid obtained in the step S1 into the surface microporous structure of the reticular fibers to prepare the sterilizing layer;
s3: the sterilization layer, the filter layer and the protective layer are sequentially stacked, a coiled material is formed through ultrasonic processing, the coiled material is cut into the coiled material specification required by the sheet filter paper through a slitting machine, and the W-shaped structure of the coiled sheet filter paper is manufactured through the wrinkle processing of a non-woven fabric folding machine to manufacture the sheet filter paper with the W-shaped structure;
s4: according to the specific appearance structure of the air filter element, cutting the W-shaped sheet filter paper obtained in the step S3 by selecting a shaping die and a cutting die which meet the requirements to obtain block-shaped sheet filter paper with specific size, and gluing the fixed surface and/or the bottom surface of the block-shaped sheet filter paper to obtain the block-shaped sheet filter paper with the preset break angle parameter and shaping; the frame is adhered to the periphery of the blocky sheet body through hot melt adhesive to manufacture the filter element body.
8. The method for preparing a sterilizing air filter element according to claim 7, wherein: in step S1, the solid carrier liquid is an ethanol aqueous solution containing a quaternary ammonium salt polymer, an iodide, an acetic acid butyric acid polymer and a stabilizer; the iodide is NaI or KI, and the stabilizer is one or a mixture of acetic acid, oxalic acid, citric acid, phosphoric acid and malic acid;
s11: ethanol and water are mixed according to the volume ratio of 1: 3-1: 4 to prepare an ethanol water solution;
s12: the quaternary ammonium salt polymer, the iodide, the acetic acid butyric acid polymer, the stabilizer and the ethanol water solution are mixed according to the mass part ratio (0.1-1.0): (0.1-2.0): (0.1-4.0): (0.1-1.0): (92.0-99.6) mixing in proportion, stirring at a stirring speed of 50-100 r/min to obtain a liquid, pumping the liquid into a refrigerating tank through a self-priming pump, and cooling at 15-20 ℃ for 2-5 min to obtain the solid carrier liquid containing the quaternary ammonium salt polymer component.
9. The method for preparing a sterilizing air filter element according to claim 8, wherein: step S2 includes:
s21: the reticular fiber is made of polyester fiber, is dried for 1 to 5 hours at the temperature of between 100 and 200 ℃, is taken out and is steamed in boiling water;
s22: placing the reticular fiber treated in the step S21 in an activating solution, carrying out an activation reaction under the conditions of stirring, shaking or ultrasound, taking out the reticular fiber after the reaction, washing the reticular fiber with distilled water, and drying; wherein the activating solution is an alkali solution containing one or more of sodium hydroxide, potassium hydroxide and sodium carbonate, and the mass part ratio of the alkali mixture to water is (1-10) to (90-99);
s23: and (4) soaking the reticular fibers processed in the step (S22) in the solid carrier liquid prepared in the step (S1), carrying out solid carrier reaction under the conditions of stirring, shaking or ultrasound, taking out the reticular fibers after the reaction is finished, and drying to obtain the bactericidal layer.
10. The method for preparing a sterilizing air filter element according to claim 9, wherein: in the solid-carrying reaction process of the step S23, the mass part ratio of the reticular fibers to the solid-carrying liquid is 1: 50-1: 200, the reaction temperature is 50-90 ℃, and the reaction time is 20-60 min; in the drying process after the immobilization reaction in the step S23, the drying temperature is 30-50 ℃, and the drying time is 2-5 h.
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| CN105999338A (en) * | 2016-05-19 | 2016-10-12 | 常州佳得顺抗菌材料科技有限公司 | Air disinfecting filter element material and preparation method thereof |
| CN106178745A (en) * | 2016-09-28 | 2016-12-07 | 深圳市信诚发过滤器材有限公司 | A kind of Multifunctional filter element and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105999338A (en) * | 2016-05-19 | 2016-10-12 | 常州佳得顺抗菌材料科技有限公司 | Air disinfecting filter element material and preparation method thereof |
| CN106178745A (en) * | 2016-09-28 | 2016-12-07 | 深圳市信诚发过滤器材有限公司 | A kind of Multifunctional filter element and preparation method thereof |
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