CN114288756A - Preparation method of air filter screen, air filter screen and application of air filter screen - Google Patents
Preparation method of air filter screen, air filter screen and application of air filter screen Download PDFInfo
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- CN114288756A CN114288756A CN202111664406.6A CN202111664406A CN114288756A CN 114288756 A CN114288756 A CN 114288756A CN 202111664406 A CN202111664406 A CN 202111664406A CN 114288756 A CN114288756 A CN 114288756A
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Abstract
The application relates to a preparation method of an air filter screen, the air filter screen and application of the air filter screen, in the preparation method of the air filter screen, a nano-silver antibacterial agent, an organic antibacterial agent, a mildew preventive, an antioxidant, a dispersing agent and a first polymer are uniformly stirred, and are subjected to melting, extrusion, cooling, grain cutting and drying to obtain a first antibacterial, antiviral and mildew-proof master batch, the first antibacterial, antiviral and mildew-proof master batch and a second polymer are uniformly stirred, and are subjected to melting, extrusion, cooling, grain cutting and drying to obtain a second antibacterial, antiviral and mildew-proof master batch, the second antibacterial, antiviral and mildew-proof master batch is spun to obtain an antibacterial, antiviral and mildew-proof monofilament, and the antibacterial, antiviral and mildew-proof monofilament is woven to obtain the air filter screen. The air filter screen prepared by the method has better antibacterial property, antiviral property and mildew resistance.
Description
Technical Field
The application relates to the technical field of air filtration, in particular to a preparation method of an air filter screen, the air filter screen and application of the air filter screen.
Background
The filter screen is widely used in the front-channel filtration or the filter of a purifier in fresh air, heating ventilation and air conditioning filtration systems, and the air filtered by the filter screen is sucked into a respiratory system by a human body, so that the clean filter screen is vital to the health of the human body. However, the antibacterial, antiviral and mildewproof properties of the filter screen obtained by the existing preparation method need to be improved.
Disclosure of Invention
The application provides a preparation method of an air filter screen, the air filter screen and application of the air filter screen, and the air filter screen prepared by the preparation method has better antibacterial performance, antiviral performance and mildew resistance.
In a first aspect, the present application provides a method for manufacturing an air filter, including:
s1: uniformly stirring the nano-silver antibacterial agent, the organic antibacterial agent, the mildew preventive, the antioxidant, the dispersing agent and the first polymer, and performing melting, extrusion, cooling, grain cutting and drying to obtain the first antibacterial, antiviral and mildew-proof master batch.
S2: and uniformly stirring the first antibacterial, antiviral and mildewproof master batch and the second polymer, and performing melting, extrusion, cooling, grain cutting and drying to obtain the second antibacterial, antiviral and mildewproof master batch.
S3: spinning the second antibacterial, antiviral and mildewproof master batch to obtain the antibacterial, antiviral and mildewproof monofilament.
S4: and weaving the antibacterial, antiviral and mildewproof monofilament to obtain the air filter screen.
In step S1, the nano-silver antibacterial agent, the organic antibacterial agent, the antifungal agent, the antioxidant, the dispersant and the first polymer are uniformly stirred by a high-speed stirrer, the obtained mixture is melted and extruded by a screw extruder, after cooling, the mixture is cut into particles and dried to obtain a first antibacterial, antiviral and antifungal master batch, and the air filtering screen prepared by using the first antibacterial, antiviral and antifungal master batch as a raw material has antibacterial property, antiviral property and antifungal property. The antioxidant is added to facilitate the delay of the oxidation process of the first polymer and the subsequent second polymer to be added, the service life of the air filter screen is prolonged, and the dispersing agent is added to facilitate the nano-silver antibacterial agent, the organic antibacterial agent, the mildew preventive, the antioxidant and the first polymer to be mixed uniformly, so that the contents of the nano-silver antibacterial agent, the organic antibacterial agent, the mildew preventive, the antioxidant and the first polymer in each first antibacterial, antiviral and mildewproof master batch are the same or close to each other. In step S2, the first antibacterial, antiviral, and antifungal master batch and the second polymer are uniformly stirred by the high-speed stirrer, the obtained mixture is melted and extruded by the screw extruder, and after cooling, the mixture is cut into particles and dried to obtain the second antibacterial, antiviral, and antifungal master batch. In step S3, the second antibacterial, antiviral, and antifungal masterbatch is put into a spinning machine to be spun, and the antibacterial, antiviral, and antifungal monofilament is obtained. The first polymer and the second polymer are mixed in steps, so that the compatibility between the polymer substances and the nano-silver antibacterial agent, the organic antibacterial agent, the mildew preventive, the antioxidant and the dispersing agent is favorably improved, and the obtained antibacterial, antiviral and mildew-proof monofilament can uniformly contain the nano-silver antibacterial agent, the organic antibacterial agent, the mildew preventive, the antioxidant and the dispersing agent. In step S4, the antibacterial, antiviral, and antifungal monofilaments are woven to obtain the airstrainer. Therefore, the preparation method of the air filter screen can enable the air filter screen to have antibacterial performance, antiviral performance and mildew-proof performance, and the filtered air is cleaner and beneficial to the health of the respiratory system of a user.
In one possible method, in step S1, the nano-silver antibacterial agent is 0.06-0.15 parts, the organic antibacterial agent is 20-30 parts, the anti-mold agent is 10-30 parts, the antioxidant is 0.05-1 part, the dispersant is 0-1 part, and the first polymer is 50-100 parts by weight.
In one possible method, before step S1, a step S0 is further included to prepare a mold preventive from a mixture of 1.5 parts of 3- (trisiloxy) propyldimethyloctadecyl ammonium chloride (SiS AM500), 0.4 parts of 3-iodo-2-propynyl-butyl carbamate (IPE), 2 parts of a fluorinated acrylic copolymer (three-proofing finish 6S-TF2), 0.2 parts of a non-ionic polyurethane resin (sticker), and 5 parts of water. In one possible method, in step S2, the first antibacterial, antiviral and antifungal masterbatch is 5 to 15 parts by weight and the second polymer is 85 to 95 parts by weight, based on the weight ratio of the materials.
In one possible method, the melting temperature is 150 ℃ to 200 ℃ and the drying temperature is 60 ℃ to 120 ℃ in step S1 and step S2. In one possible method, the nano-silver antibacterial agent comprises at least one of zirconium phosphate silver-carrying, glass silver-carrying, titanium dioxide silver-carrying, silicate silver-carrying, zeolite silver-carrying, silver-based oxides and silver-based ionic compounds, the organic antibacterial agent comprises quaternary ammonium salt antibacterial agent and/or biguanide antibacterial agent, the antioxidant comprises hindered phenol antioxidant and/or phosphite antioxidant, and the dispersing agent comprises liquid paraffin and/or white mineral oil.
In one possible approach, the first polymer and/or the second polymer is one or more of polyethylene terephthalate (PET), polybutylene terephthalate (PBT), Polyamide (PA).
In one possible method, the nano-silver antibacterial agent is 0.15 parts, the organic antibacterial agent is 30 parts, the mildew preventive is 30 parts, the antioxidant is 1 part, the dispersing agent is 1 part, and the first polymer is 100 parts in step S1, and the first antibacterial, antiviral and mildew-proof master batch is 15 parts and the second polymer is 85 parts in step S2.
The second aspect of the present application provides an air filter screen, which is obtained by using the preparation method of the air filter screen in the above content, and the effects of the air filter screen are the same as those of the above content.
The third aspect of the application provides an application of an air filter screen, which is applied to fresh air, heating ventilation, air conditioning and filtering systems, purifier equipment and track traffic and purification systems, and has the same effect as the above.
Drawings
Fig. 1 is a flowchart of a method for manufacturing an air filter provided in the present application.
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Detailed Description
For better understanding of the technical solutions of the present application, the following detailed descriptions of the embodiments of the present application are provided with reference to the accompanying drawings.
It should be understood that the embodiments described are only a few embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the examples of this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
It should be noted that the terms "upper", "lower", "left", "right", and the like used in the embodiments of the present application are described in terms of the angles shown in the drawings, and should not be construed as limiting the embodiments of the present application. In addition, in this context, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on "or" under "the other element or be indirectly on" or "under" the other element via an intermediate element.
The application provides a preparation method of an air filter screen, which can be applied to the technical field of air filtration, and as shown in fig. 1, the preparation method of the air filter screen comprises the following steps:
step S1: uniformly stirring the nano-silver antibacterial agent, the organic antibacterial agent, the mildew preventive, the antioxidant, the dispersing agent and the first polymer, and performing melting, extrusion, cooling, grain cutting and drying to obtain the first antibacterial, antiviral and mildew-proof master batch.
Step S2: and uniformly stirring the first antibacterial, antiviral and mildewproof master batch and the second polymer, and performing melting, extrusion, cooling, grain cutting and drying to obtain the second antibacterial, antiviral and mildewproof master batch.
Step S3: spinning the second antibacterial, antiviral and mildewproof master batch to obtain the antibacterial, antiviral and mildewproof monofilament.
Step S4: and weaving the antibacterial, antiviral and mildewproof monofilament to obtain the air filter screen.
In this embodiment, in step S1, the nano-silver antibacterial agent, the organic antibacterial agent, the antifungal agent, the antioxidant, the dispersing agent, and the first polymer are uniformly stirred by a high-speed stirrer, the obtained mixture is melted and extruded by a screw extruder, after cooling, the mixture is cut into particles and dried to obtain a first antibacterial, antiviral, and antifungal mother particle, and the air filtering mesh prepared by using the first antibacterial, antiviral, and antifungal mother particle as a raw material has antibacterial, antiviral, and antifungal properties. The antioxidant is added to facilitate the delay of the oxidation process of the first polymer and the subsequent second polymer to be added, the service life of the air filter screen is prolonged, and the dispersing agent is added to facilitate the nano-silver antibacterial agent, the organic antibacterial agent, the mildew preventive, the antioxidant and the first polymer to be mixed uniformly, so that the contents of the nano-silver antibacterial agent, the organic antibacterial agent, the mildew preventive, the antioxidant and the first polymer in each first antibacterial, antiviral and mildewproof master batch are the same or close to each other.
In step S2, the first antibacterial, antiviral, and antifungal master batch and the second polymer are uniformly stirred by the high-speed stirrer, the obtained mixture is melted and extruded by the screw extruder, and after cooling, the mixture is cut into particles and dried to obtain the second antibacterial, antiviral, and antifungal master batch.
In step S3, the second antibacterial, antiviral, and antifungal masterbatch is put into a spinning machine to be spun, and the antibacterial, antiviral, and antifungal monofilament is obtained. The first polymer and the second polymer are mixed in steps, so that the compatibility between the polymer substances and the nano-silver antibacterial agent, the organic antibacterial agent, the mildew preventive, the antioxidant and the dispersing agent is favorably improved, and the obtained antibacterial, antiviral and mildew-proof monofilament can uniformly contain the nano-silver antibacterial agent, the organic antibacterial agent, the mildew preventive, the antioxidant and the dispersing agent.
In step S4, the antibacterial, antiviral, and antifungal monofilaments are woven to obtain the airstrainer.
Therefore, the preparation method of the air filter screen can enable the air filter screen to have antibacterial performance, antiviral performance and mildew-proof performance, and the filtered air is cleaner and beneficial to the health of the respiratory system of a user.
Specifically, in step S1, the nano-silver antibacterial agent is 0.06-0.15 parts, the organic antibacterial agent is 20-30 parts, the anti-mold agent is 10-30 parts, the antioxidant is 0.05-1 part, the dispersant is 0-1 part, and the first polymer is 50-100 parts by weight.
In this embodiment, the air filter net with different antibacterial, antiviral and antifungal properties can be obtained by proportioning the nano-silver antibacterial agent, the organic antibacterial agent, the antifungal agent, the antioxidant, the dispersing agent and the polymer with different contents, so as to meet the use requirements of different filtering environments.
Specifically, in step S1 and step S2, the melting temperature is 150 ℃ to 200 ℃ and the drying temperature is 60 ℃ to 120 ℃.
Specifically, in step S2, the first antibacterial, antiviral and antifungal masterbatch is 5 to 15 parts by weight, and the second polymer is 85 to 95 parts by weight.
In the embodiment, the compatibility of the polymer substance and the nano-silver antibacterial agent, the organic antibacterial agent, the mildew preventive, the antioxidant and the dispersing agent can be adjusted by proportioning the first antibacterial, antiviral and mildew-proof master batch and the second polymer with different contents on the basis of obtaining the air filter screen with different antibacterial, antiviral and mildew-proof performances, so that the use requirements of different filtering environments can be met.
The preparation method of the air filter screen comprises three optimal proportioning embodiments.
In the first embodiment, in step S1, the nano-silver antibacterial agent is 0.06 parts, the organic antibacterial agent is 20 parts, the antifungal agent is 10 parts, the antioxidant is 0.05 parts, and the polymer is 50 parts by weight. In step S2, the first antibacterial, antiviral, and antifungal masterbatch is 5 parts by weight and the second polymer is 95 parts by weight.
In a second specific example, in step S1, the nano-silver antibacterial agent is 0.1 parts, the organic antibacterial agent is 25 parts, the antifungal agent is 20 parts, the antioxidant is 0.75 part, the dispersant is 0.5 part, and the first polymer is 75 parts by weight. In step S2, the first antibacterial, antiviral, and antifungal masterbatch is 10 parts by weight and the second polymer is 90 parts by weight.
In a third embodiment, in step S1, the nano-silver antibacterial agent is 0.15 parts, the organic antibacterial agent is 30 parts, the antifungal agent is 30 parts, the antioxidant is 1 part, the dispersing agent is 1 part, and the first polymer is 100 parts by weight. In step S2, the first antibacterial, antiviral, and antifungal masterbatch is 15 parts by weight and the second polymer is 85 parts by weight.
The air filter screen prepared by the method is compared with the air filter screen which is woven only by using polymer master batch spinning in the prior art for a test.
The antiviral performance test adopts ISO 18184:2019(E) as a detection basis, and the test virus is influenza A virus H1N 1: A/PR/8/34(ATCC VR-1469), and the host cell is canine kidney cell (MDCK cell).
The antibacterial performance test adopts JIS Z2801:2010 as a detection basis, and the test strains are escherichia coli and staphylococcus aureus.
The mildew resistance test adopts JIS Z2011:2018 method A as a detection basis and a detection method, and the test strains are Aspergillus niger, Penicillium funiculosum, Trichoderma viride, Chaetomium globosum and Paecilomyces variotii. Rating standard: grade 0 (no fungal growth was visible visually and under the microscope, zone of inhibition visible around the test sample, width reported in mm), grade 1 (no fungal growth was visible visually, but fungal growth was visible under the microscope), grade 2 (no hyphal growth was visible visually, and the area of mildew on the sample was more than 25% of the total area of the sample); grade 3 (hypha growth can be obviously seen visually, and the area of the mildew growing on the sample accounts for 25-50% of the total area of the sample); grade 4 (hypha growth can be obviously seen visually, and the area of the mildew growing on the sample accounts for 50-100% of the total area of the sample); grade 5 (hyphae grow vigorously, covering the entire sample).
The results shown in table 1 are obtained through tests, and the air filter screen prepared by the method has better antibacterial, antiviral and mildewproof properties.
TABLE 1
| Numbering | Average value of antibacterial ratio | Mean value of antiviral Rate | Mildew resistance rating |
| Example 1 | 99.4％ | 99.2％ | 0 |
| Example 2 | 99.6％ | 99.5％ | 0 |
| Example 3 | 99.9％ | 99.8％ | 0 |
| Comparative example 1 | 0 | 0 | 2 |
In the three optimal proportioning embodiments, the proportioning of the nano-silver antibacterial agent and the organic antibacterial agent ensures that the second antibacterial, antiviral and mildewproof master batch has excellent antibacterial property and antiviral property, good spinning performance and good water solubility, and can be used for producing air filter screens in batches.
As shown in fig. 1, before the step S1, a step S0 is further included for preparing the mildewcide. In step S0, a mildewcide is prepared using a mixture of 3- (trisiloxy) propyldimethyloctadecyl ammonium chloride (SiS AM500), 3-iodo-2-propynyl-butyl carbamate (IPE), fluorinated acrylic copolymer (three-proofing finish 6S-TF2), nonionic urethane resin (adhesive), and water.
In this embodiment, 3- (trisiloxy) propyldimethyloctadecyl ammonium chloride (SiS AM500) contains quaternary ammonium cations, which are effective bactericidal groups, and are easily attracted by negatively charged bacteria, and can destroy cell walls and cell membranes, so that intracellular solutes leak out, thereby killing the bacteria. In addition, 3- (trisiladroxy) propyldimethyloctadecyl ammonium chloride (SiS AM500) has silane coupling property, generates a silanol group by hydrolysis reaction when meeting water, generates covalent bonding between the silanol group and some functional groups in the spinning fiber, for example, the silanol group and the hydroxyl of the fiber spun by the first polymer and the second polymer generate dehydration condensation reaction and generate covalent bonding, so that the silanol group and the fiber are firmly bonded together, and the long-acting antibacterial effect is generated. 3-iodine-2-propynyl-butyl carbamate (IPE) is used as a special mildew preventive and can be synergistically acted with 3- (trisiloxy) propyldimethyloctadecyl ammonium chloride (SiS AM500) to enhance the mildew preventive effect. Fluorinated acrylic copolymer (three-proofing finishing agent 6S-TF2) is used as a waterproof agent for making the air filter screen have a waterproof effect after the air filter screen is prepared, so that the air filter screen is prevented from being wet and can effectively inhibit the growth of mold. The nonionic urethane resin (adhesive) can strengthen the binding force of the mold preventive and the first and second polymers.
Specifically, in step S0, based on the weight ratio of each material, 1.5 parts of 3- (trisiloxy) propyldimethyloctadecyl ammonium chloride (SiS AM500), 0.4 parts of 3-iodo-2-propynyl-butyl carbamate (IPE), 2 parts of fluorinated acrylic copolymer (three-proofing finishing agent 6S-TF2), 0.2 parts of nonionic polyurethane resin (adhesive), and 5 parts of water are added. The mildew preventive prepared by the ratio has the best mildew prevention effect.
The nano-silver antimicrobial agent may include at least one of zirconium phosphate-supported silver, glass-supported silver, titanium dioxide-supported silver, silicate-supported silver, zeolite-supported silver, silver-based oxides, and silver-based ionic compounds.
The organic antibacterial agent may include a quaternary ammonium salt antibacterial agent and/or a biguanide antibacterial agent.
The antioxidant may include hindered phenolic antioxidants and/or phosphite antioxidants.
The dispersant may include liquid paraffin and/or white mineral oil.
The first polymer and/or the second polymer may comprise one or more of polyethylene terephthalate (PET), polybutylene terephthalate (PBT), Polyamide (PA).
The second aspect of the present application provides an air filter obtained by the method for manufacturing an air filter in the foregoing embodiment, which has the above-mentioned effects, and is not described herein again.
This application third aspect provides an application of airstrainer, with airstrainer in above-mentioned embodiment be applied to new trend, warm logical, air conditioner filtration system, clarifier equipment, track traffic clean system in, have the effect of above-mentioned content, and the here is no longer repeated.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A preparation method of an air filter screen is characterized by comprising the following steps:
s1: uniformly stirring the nano-silver antibacterial agent, the organic antibacterial agent, the mildew preventive, the antioxidant, the dispersing agent and the first polymer, and performing melting, extrusion, cooling, grain cutting and drying to obtain a first antibacterial, antiviral and mildew-proof master batch;
s2: uniformly stirring the first antibacterial, antiviral and mildewproof master batch and the second polymer, and performing melting, extrusion, cooling, grain cutting and drying to obtain a second antibacterial, antiviral and mildewproof master batch;
s3: spinning the second antibacterial, antiviral and mildewproof master batch to obtain antibacterial, antiviral and mildewproof monofilaments;
s4: and weaving the antibacterial, antiviral and mildewproof monofilament to obtain the air filter screen.
2. The method for manufacturing an airstrainer according to claim 1, wherein in step S1:
calculated according to the weight ratio of all the substances, the nano-silver antibacterial agent accounts for 0.06-0.15 part, the organic antibacterial agent accounts for 20-30 parts, the mildew preventive accounts for 10-30 parts, the antioxidant accounts for 0.05-1 part, the dispersing agent accounts for 0-1 part, and the first polymer accounts for 50-100 parts.
3. The method for preparing an airstrainer as claimed in claim 1, wherein before step S1, the method further comprises step S0:
the mildew preventive is prepared from a mixture of 1.5 parts of 3- (trisiloxy) propyldimethyloctadecyl ammonium chloride (SiS AM500), 0.4 part of 3-iodo-2-propynyl-butyl carbamate (IPE), 2 parts of fluorinated acrylic copolymer (three-proofing finishing agent 6S-TF2), 0.2 part of nonionic polyurethane resin (adhesive) and 5 parts of water according to the weight ratio of the substances.
4. The method for manufacturing an airstrainer according to claim 1, wherein in step S2:
calculated according to the weight ratio of all the materials, the first antibacterial, antiviral and mildewproof master batch accounts for 5-15 parts, and the second polymer accounts for 85-95 parts.
5. The method of manufacturing an airstrainer according to claim 1, wherein in steps S1 and S2:
the melting temperature is 150 ℃, and the drying temperature is 60-120 ℃.
6. The method of claim 1, wherein the nano-silver antimicrobial agent comprises at least one of zirconium phosphate-loaded silver, glass-loaded silver, titanium dioxide-loaded silver, silicate-loaded silver, zeolite-loaded silver, silver-based oxides, and silver-based ionic compounds;
the organic antibacterial agent comprises a quaternary ammonium salt antibacterial agent and/or a biguanide antibacterial agent;
the antioxidant comprises hindered phenol antioxidant and/or phosphite antioxidant;
the dispersant comprises liquid paraffin and/or white mineral oil.
7. The method of manufacturing an airstrainer according to claim 1, wherein the first polymer and/or the second polymer is one or more of polyethylene terephthalate (PET), polybutylene terephthalate (PBT), Polyamide (PA).
8. The method for producing an airstrainer according to any one of claims 1 to 7, wherein in step S1:
calculated according to the weight ratio of all the substances, the nano-silver antibacterial agent is 0.15 part, the organic antibacterial agent is 30 parts, the mildew preventive is 30 parts, the antioxidant is 1 part, the dispersing agent is 1 part, and the first polymer is 100 parts;
in step S2:
the weight ratio of the first antibacterial antiviral mildew-proof master batch to the second polymer is 15 parts and 85 parts.
9. An air filter screen, characterized in that the air filter screen is obtained by the method for preparing the air filter screen according to any one of claims 1 to 8.
10. Use of an airstrainer according to claim 9 in fresh air, heating ventilation, air conditioning filtration systems, purifier equipment, rail transit purification systems.
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