CN112191021A - Spray-type sunlight-driven sterilization melt-blown material and preparation method thereof - Google Patents
Spray-type sunlight-driven sterilization melt-blown material and preparation method thereof Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/02—Loose filtering material, e.g. loose fibres
- B01D39/04—Organic material, e.g. cellulose, cotton
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/90—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having two or more relevant hetero rings, condensed among themselves or with a common carbocyclic ring system
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/44—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds
- D01F6/46—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds of polyolefins
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- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
- D06M13/35—Heterocyclic compounds
- D06M13/352—Heterocyclic compounds having five-membered heterocyclic rings
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M16/00—Biochemical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. enzymatic
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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
- B01D2239/10—Filtering material manufacturing
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/18—Synthetic fibres consisting of macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/20—Polyalkenes, polymers or copolymers of compounds with alkenyl groups bonded to aromatic groups
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Abstract
The invention relates to a spray-type sunlight-driven sterilization melt-blown material and a preparation method thereof, wherein the preparation method comprises the following steps: the preparation method comprises five steps of preparing modified master batches containing the electret energizer auxiliary, preparing a melt-blown material, preparing an electric spraying solution containing the sterilization auxiliary, and electrically spraying and electret, wherein the sterilization auxiliary is a mixture of rose bengal, tetraphenylporphyrin and chlorin e6, and the electret energizer auxiliary is one or more of stearates. The electret energizing additive is added into the melt-blown material, so that the charge storage performance can be obviously changed, the electrostatic attraction effect on micro-particles, bacteria and the like can be improved, the stability of the filtering efficiency can be improved, the sprayed sterilization additive can be used for quickly killing the bacteria under the driving of sunlight, the sterilization function can be realized on the premise of ensuring the high filtering efficiency, and the protection of related microorganisms, bacteria and infectious viruses is facilitated.
Description
Technical Field
The invention belongs to the field of air filtering material preparation, and particularly relates to a spray-type sunlight-driven sterilization melt-blown material and a preparation method thereof.
Background
The novel coronary pneumonia which breaks out in 2019 wraps around the world at an alarming speed, and seriously threatens the life health of human beings. It propagates mainly in three ways: respiratory droplets, close contact transmission and high-concentration aerosol transmission in a long-term closed environment, and has strong cross-infection capacity. To date, no specific treatment regimen has been found. Therefore, the prevention and isolation method is the most effective protection measure at present, and how to prepare the high-performance melt-blown filter material for the individual protective mask is an important problem to be solved urgently at present.
Patent CN103537142A discloses a needle-punched electrostatic cotton filter material, but no effective energizing aid is added in the preparation process, so that the problems of poor electrostatic attraction effect and serious attenuation of the filter efficiency after a period of time exist. Patent CN206534167U discloses an antifog haze gauze mask main part material and gauze mask, including acupuncture static cotton for first filter layer and electret melt-blown material be the second filter layer, equally, add the energy-increasing auxiliary agent that can promote the electret effect in the preparation process, also have the serious problem of filter efficiency decay after a period. Patent CN109794164A discloses a protective device, a sterilization and disinfection composite sheet and a manufacturing method thereof, the adopted sterilization and disinfection catalyst is compounded on melt-blown non-woven fabric in a powder form, so that the sterilization and disinfection catalyst can only play a role in surface sterilization, and the problem of reduced sterilization and disinfection effect caused by particle shedding exists. Utility model CN209883133U has disclosed a gauze mask with function of disinfecting, including waterproof polypropylene non-woven fabrics material skin, melt the material middle level of spouting, the polypropylene non-woven fabrics material inlayer that disinfects, melt the material and do not possess the function of disinfecting as the core filter layer, have the not obvious problem of bactericidal effect.
Generally, the current melt-blown filter material is difficult to meet the performance index requirements of high filter efficiency, high filter efficiency stability, low filter resistance, rapid sterilization function and the like.
Disclosure of Invention
The invention aims to solve the technical problem of providing a spray type sunlight-driven sterilization melt-blown material and a preparation method thereof, wherein the melt-blown material has a sterilization function on the premise of ensuring high filtration efficiency and is beneficial to the protection of relevant microorganism bacteria and infectious viruses.
In order to achieve the purpose, the invention provides the following technical scheme:
a preparation method of a spray-type sunlight-driven sterilization melt-blown material is characterized by comprising the following steps:
(1) preparing modified master batch: respectively adding an electret energy-increasing auxiliary agent and conventional polypropylene slices into two feeding hoppers of a granulator, performing melt extrusion at the temperature of 200 ℃, performing water bath cooling, cutting into granules, and drying to obtain modified master batches, wherein the electret energy-increasing auxiliary agent is one or more of stearate;
(2) preparing a melt-blown material: mixing the modified master batch prepared in the step (1) with conventional polypropylene chips through a melt-blowing device to prepare a melt-blown material;
(3) preparation of electrospray solution: mixing a sterilization aid and a stabilizer, and then adding the mixture into water to prepare an electrospray solution, wherein the sterilization aid is a mixture of rose bengal, tetraphenylporphyrin and chlorin e 6;
(4) electric spraying: electrospraying the melt-blown material prepared in the step (2) by using the electrospraying solution prepared in the step (3) as a raw material through an electrospraying device;
(5) an electret: and (4) placing the melt-blown material subjected to the electro-spraying treatment prepared in the step (4) on an electrostatic electret device for on-line electret treatment to obtain the spray-type sunlight-driven sterilization melt-blown material.
Further, in the preparation method, the sterilization aid consists of 40-60% of rose bengal, 10-20% of tetraphenylporphyrin and 30-40% of chlorin e6 in percentage by mass.
Further, in the preparation method, the electret energy-increasing auxiliary agent consists of, by mass, 60-80% of zinc stearate and 20-40% of calcium stearate.
Further, in the step (1) of the preparation method, the mass ratio of the electret energizer auxiliary agent to the modified master batch is (10-15): 100.
further, in the step (2) of the preparation method, the mass ratio of the modified master batch to the melt-blown material is (5-10): 100.
further, the specific conditions of the melt blowing device in the preparation method are as follows: the diameter of the melt-blown spinneret plate is 0.15-0.25 mm, and the melt-blown receiving distance is 10-20 cm.
Further, in the step (3) of the preparation method, the mass ratio of the sterilization auxiliary agent to the stabilizer to the water is (0.5-3): (100-150): 1000.
further, in the step (4) of the preparation method, the conditions of electrospray specifically include: the electric spraying voltage is 10-20 kV, the electric spraying distance is 10-20 cm, and the electric spraying time is 20-40 min.
Further, in the step (5) of the preparation method, the electret specifically is: corona discharge is carried out by adopting a needle point, the electret voltage is 100-150 kV, the electret distance is 10-15 cm, the electret time is 30-60 seconds, the electret temperature is 20-25 ℃, and the humidity is 30-40%.
The invention also provides a spray prepared by the preparation methodThe coated sunlight-driven sterilization melt-blown material has the fiber diameter of 1.0-5.0 mu m and the surface density of 10-80 g/m2The thickness is 0.10 to 1.00 mm.
The invention has the beneficial effects that:
1) according to the spray type sunlight-driven sterilization melt-blown material, small-particle-size particles can be intercepted by means of the smaller fiber diameter and pore size of the melt-blown material, a fine filtering effect is achieved, more pore-size channels can be provided for air molecules to pass through by means of the three-dimensional porous net structure of the melt-blown material, and the spray type sunlight-driven sterilization melt-blown material is beneficial to reducing filtering resistance and delaying the rise of the filtering resistance in the loading and filtering process;
2) the spray-type sunlight-driven sterilization melt-blown material is added with the electret energizing auxiliary agent, so that the charge storage performance can be obviously changed, the electrostatic attraction effect on micro-particles, bacteria and the like can be improved, and the stability of the filtering efficiency can be improved;
3) the spray type sunlight-driven sterilization melt-blown material disclosed by the invention is sprayed with the sterilization auxiliary agent, can be used for quickly killing bacteria under the drive of sunlight, and has a quick sterilization function on the premise of ensuring high filtration efficiency;
4) the spray type sunlight-driven sterilization melt-blown material has a simple process route and is easy to industrially popularize.
Drawings
Fig. 1 is a scanning electron micrograph of the spray-type solar light-driven sterilizing melt-blown material obtained in example 1 of the present invention.
Detailed Description
The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
Example 1
Preparing modified master batch: respectively adding 10g of electret energy-increasing additive and 90g of conventional polypropylene slices into two feeding hoppers of a granulator, performing melt extrusion at the temperature of 200 ℃, performing water bath cooling, cutting into granules, and drying to obtain 100g of modified master batches, wherein the mass ratio of the electret energy-increasing additive to the modified master batches is 1: 10, the electret energizer auxiliary agent is a mixture of 7g of zinc stearate and 3g of calcium stearate, wherein the mass percentages of the zinc stearate and the calcium stearate are respectively 70% and 30%; and then mixing the modified master batch with conventional polypropylene chips, and taking the mixture as a raw material of a melt-blown material, wherein the mass ratio of the modified master batch to the melt-blown material is 5: 100.
preparing a melt-blown material: the fiber diameter of 4.5 μm and the surface density of 20g/m are prepared by a melt-blowing device2Melt-blown material with a thickness of 0.20mm, a spinneret hole diameter of 0.25mm and a melt-blowing receiving distance of 14 cm.
Preparation of electrospray solution: mixing 5g of a sterilization aid (a mixture of 2g of rose bengal, 1g of tetraphenylporphyrin and 2g of chlorin e 6) and 1kg of a stabilizer according to a certain ratio, and adding the mixture into 10kg of water to prepare an electrospray solution, wherein the mass percentages of the rose bengal, the tetraphenylporphyrin and the chlorin e6 in the sterilization aid mixture are 40%, 20% and 40% respectively; the mass ratio of the sterilization auxiliary agent to the stabilizing agent to the water is 0.5:100: 1000.
Electric spraying: and (3) carrying out electric spraying on the melt-blown material by using the prepared electric spraying solution as a raw material through an electric spraying device, wherein the electric spraying voltage is 10kV, the electric spraying distance is 15cm, and the electric spraying time is 20 min.
An electret: the melt-blown material after the electric spray treatment is placed on an electrostatic electret device for on-line electret treatment, wherein the electret adopts needle point corona discharge, the electret voltage is 100kV, the electret distance is 12cm, the electret time is 30 seconds, the electret temperature is 20 ℃, and the humidity is 30%.
The filtering efficiency and the filtering resistance of the obtained filtering material are tested by adopting a TSI8130 automatic filtering material tester, when the flow rate is 85L/min and the mass median diameter of sodium chloride aerosol is 0.26 mu m, the filtering efficiency is 93.54 percent, the filtering resistance is 72.52Pa, and after the filtering material is treated for 24 hours at the temperature of 70 ℃, the filtering efficiency is 92.17 percent, and the filtering resistance is 71.54 Pa. The filtration efficiency was 90.66% and the filtration resistance was 77.42Pa at a flow rate of 95L/min and a paraffin oil aerosol mass median diameter of 0.33. mu.m, and the filtration efficiency was 88.91% and the filtration resistance was 76.44Pa after treatment at 70 ℃ for 24 hours.
The aerosol generating device is adopted to uniformly spray the aerosol containing bacteria on the surface of the melt-blown material, after the simulated sunlight is used for irradiating for 10min, the bacteria on the surface of the melt-blown material are washed off and transferred to the culture plate for culture, the bacteria inhibition rate is calculated by observing the number of the bacteria on the culture plate, and the different bacteria inhibition rates are shown in table 1.
Table 1 bacteriostatic ratio before and after spray application of bactericide of melt-blown material obtained in example 1
Example 2
Preparing modified master batch: respectively adding 12g of electret energy-increasing additive and 88g of conventional polypropylene slices into two feeding hoppers of a granulator, performing melt extrusion at the temperature of 200 ℃, performing water bath cooling, cutting into granules, and drying to obtain modified master batches, wherein the mass ratio of the electret energy-increasing additive to the modified master batches is 12: 100, the electret energizer additive is a mixture of 9g of zinc stearate and 3g of calcium stearate, wherein the mass percentages of the zinc stearate and the calcium stearate are respectively 75% and 25%; and then mixing the modified master batch with 1150g of conventional polypropylene chips, and taking the mixture as a raw material of the melt-blown material, wherein the mass ratio of the modified master batch to the melt-blown material is 8: 100.
Preparing a melt-blown material: the fiber diameter is 3.0 μm and the surface density is 40g/m by a melt-blowing device2Melt-blown material with a thickness of 0.40mm, a spinneret hole diameter of 0.20mm and a melt-blowing receiving distance of 12 cm.
Preparation of electrospray solution: mixing a sterilization aid (a mixture of 7.5g of rose bengal, 2.25g of tetraphenylporphyrin and 5.25g of chlorin e 6) and 1.2kg of a stabilizer according to a certain proportion, and adding the mixture into 10kg of water to prepare an electrospray solution, wherein the mass percentages of the rose bengal, the tetraphenylporphyrin and the chlorin e6 in the sterilization aid mixture are respectively 50%, 15% and 35%; the mass ratio of the sterilization auxiliary agent to the stabilizing agent to the water is 1.5:120: 1000.
Electric spraying: and (3) carrying out electric spraying on the melt-blown material by using the prepared electric spraying solution as a raw material through an electric spraying device, wherein the electric spraying voltage is 15kV, the electric spraying distance is 12cm, and the electric spraying time is 30 min.
An electret: the melt-blown material after the electric spray treatment is placed on an electrostatic electret device for on-line electret treatment, wherein the electret adopts needle point corona discharge, the electret voltage is 120kV, the electret distance is 11cm, the electret time is 40 seconds, the electret temperature is 22 ℃, and the humidity is 30%.
The filtering efficiency and the filtering resistance of the obtained filtering material are tested by adopting a TSI8130 automatic filtering material tester, when the flow rate is 85L/min and the mass median diameter of sodium chloride aerosol is 0.26 mu m, the filtering efficiency is 99.21 percent, the filtering resistance is 137.20Pa, and after the filtering efficiency is 98.85 percent and the filtering resistance is 135.24Pa after the filtering material is treated for 24 hours at the temperature of 70 ℃. The filtration efficiency was 98.26% and the filtration resistance was 156.80Pa at a flow rate of 95L/min and a paraffin oil aerosol mass median diameter of 0.33. mu.m, and the filtration efficiency was 97.14% and the filtration resistance was 153.86Pa after treatment at 70 ℃ for 24 hours.
The aerosol generating device is adopted to uniformly spray the aerosol containing bacteria on the surface of the melt-blown material, after the simulated sunlight is used for irradiating for 10min, the bacteria on the surface of the melt-blown material are washed off and transferred to the culture plate for culture, the survival rate of the bacteria is calculated by observing the number of the bacteria on the culture plate, and the survival rates of different bacteria are shown in table 2.
Table 2 bacteriostatic ratio before and after spraying the melt-blown material obtained in example 2 with a bactericide
Example 3
Preparing modified master batch: respectively adding 15g of electret energy-increasing auxiliary agent and 85g of conventional polypropylene slices into two feeding hoppers of a granulator, performing melt extrusion at the temperature of 200 ℃, performing water bath cooling, cutting into granules, and drying to obtain modified master batches, wherein the electret energy-increasing auxiliary agent accounts for 15% of the mass ratio of the modified master batches, and is a mixture of 12g of zinc stearate and 3g of calcium stearate, wherein the mass percentages of the zinc stearate and the calcium stearate are 80% and 20%, respectively; then 100g of modified master batch and 900g of conventional polypropylene chips are mixed and used as the raw material of the melt-blown material, and the mass of the modified master batch accounts for 10 percent of the mass of the melt-blown material.
Preparing a melt-blown material: the fiber diameter is 2.0 mu m and the surface density is 60g/m through a melt-blowing device2Melt-blown material with a thickness of 0.65mm, a spinneret hole diameter of 0.20mm and a melt-blowing receiving distance of 10 cm.
Preparation of electrospray solution: mixing 30g of a sterilization aid (a mixture of 16.5g of rose bengal, 3g of tetraphenylporphyrin and 10.5g of chlorin e 6) and 1.5kg of a stabilizer according to a certain proportion, and adding the mixture into 10kg of water to prepare an electrospray solution, wherein the mass percentages of the rose bengal, the tetraphenylporphyrin and the chlorin e6 in the sterilization aid mixture are 55%, 10% and 35% respectively; the mass ratio of the sterilization auxiliary agent to the stabilizing agent to the water is 3:150: 1000. .
Electric spraying: and (3) carrying out electric spraying on the melt-blown material by using the prepared electric spraying solution as a raw material through an electric spraying device, wherein the electric spraying voltage is 15kV, the electric spraying distance is 10cm, and the electric spraying time is 30 min.
An electret: the melt-blown material after the electric spray treatment is placed on an electrostatic electret device for on-line electret treatment, wherein the electret adopts needle point corona discharge, the electret voltage is 150kV, the electret distance is 10cm, the electret time is 50 seconds, the electret temperature is 20 ℃, and the humidity is 30%.
The filtering efficiency and the filtering resistance of the obtained filtering material are tested by adopting a TSI8130 automatic filtering material tester, when the flow rate is 85L/min and the mass median diameter of sodium chloride aerosol is 0.26 mu m, the filtering efficiency is 99.99 percent, the filtering resistance is 196.00Pa, and after the filtering efficiency is 99.94 percent and the filtering resistance is 194.04Pa after the filtering material is treated for 24 hours at the temperature of 70 ℃. The filtration efficiency is 99.63 percent and the filtration resistance is 218.54Pa when the flow rate is 95L/min and the quality median diameter of the paraffin oil aerosol is 0.33 mu m, and the filtration efficiency is 99.05 percent and the filtration resistance is 214.62Pa after the treatment for 24 hours in an environment at 70 ℃.
The aerosol generating device is adopted to uniformly spray the aerosol containing bacteria on the surface of the melt-blown material, after the simulated sunlight is used for irradiating for 10min, the bacteria on the surface of the melt-blown material are washed off and transferred to the culture plate for culture, the survival rate of the bacteria is calculated by observing the number of the bacteria on the culture plate, and the survival rates of different bacteria are shown in table 3.
Table 3 bacteriostatic ratio before and after spray application of bactericide of melt-blown material obtained in example 3
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A preparation method of a spray-type sunlight-driven sterilization melt-blown material is characterized by comprising the following steps:
(1) preparing modified master batch: respectively adding an electret energy-increasing auxiliary agent and conventional polypropylene slices into two feeding hoppers of a granulator, performing melt extrusion at the temperature of 200 ℃, performing water bath cooling, cutting into granules, and drying to obtain modified master batches, wherein the electret energy-increasing auxiliary agent is one or more of stearate;
(2) preparing a melt-blown material: mixing the modified master batch prepared in the step (1) with conventional polypropylene chips through a melt-blowing device to prepare a melt-blown material;
(3) preparation of electrospray solution: mixing a sterilization aid and a stabilizer, and then adding the mixture into water to prepare an electrospray solution, wherein the sterilization aid is a mixture of rose bengal, tetraphenylporphyrin and chlorin e 6;
(4) electric spraying: electrospraying the melt-blown material prepared in the step (2) by using the electrospraying solution prepared in the step (3) as a raw material through an electrospraying device;
(5) an electret: and (4) placing the melt-blown material subjected to the electro-spraying treatment prepared in the step (4) on an electrostatic electret device for on-line electret treatment to obtain the spray-type sunlight-driven sterilization melt-blown material.
2. The preparation method according to claim 1, wherein the bactericidal auxiliary comprises, by mass, 40-60% of rose bengal, 10-20% of tetraphenylporphyrin and 30-40% of chlorin e 6.
3. The preparation method according to claim 1, wherein the electret energy-enhancing additive comprises, by mass, 60-80% of zinc stearate and 20-40% of calcium stearate.
4. The preparation method according to claim 3, wherein in the step (1), the mass ratio of the electret energy-enhancing additive to the modified master batch is (10-15): 100.
5. the preparation method according to claim 4, wherein in the step (2), the mass ratio of the modified master batch to the melt-blown material is (5-10): 100.
6. the method of claim 1, wherein: the specific conditions of the melt-blowing device are as follows: the diameter of the melt-blown spinneret plate is 0.15-0.25 mm, and the melt-blown receiving distance is 10-20 cm.
7. The method of claim 1, wherein: in the step (3), the mass ratio of the sterilization auxiliary agent to the stabilizer to the water is (0.5-3): (100-150): 1000.
8. the method of claim 1, wherein: in the step (4), the conditions of electric spraying are as follows: the electric spraying voltage is 10-20 kV, the electric spraying distance is 10-20 cm, and the electric spraying time is 20-40 min.
9. The method of claim 1, wherein: in the step (5), the electret is specifically: corona discharge is carried out by adopting a needle point, the electret voltage is 100-150 kV, the electret distance is 10-15 cm, the electret time is 30-60 seconds, the electret temperature is 20-25 ℃, and the humidity is 30-40%.
10. The spray-type solar-driven sterilization melt-blown material prepared by the preparation method of any one of claims 1 to 9, wherein the fiber diameter of the spray-type solar-driven sterilization melt-blown material is 1.0 to 5.0 μm, and the areal density of the spray-type solar-driven sterilization melt-blown material is 10 to 80g/m2The thickness is 0.10 to 1.00 mm.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113373542A (en) * | 2021-06-16 | 2021-09-10 | 深圳市瀚粤实业有限公司 | High-filtration-efficiency low-resistance melt-blown fabric with sterilization function and preparation method thereof |
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