CN112545076A - Preparation method of degradable photocatalyst antibacterial mask - Google Patents
Preparation method of degradable photocatalyst antibacterial mask Download PDFInfo
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- CN112545076A CN112545076A CN202011433442.7A CN202011433442A CN112545076A CN 112545076 A CN112545076 A CN 112545076A CN 202011433442 A CN202011433442 A CN 202011433442A CN 112545076 A CN112545076 A CN 112545076A
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- 230000000844 anti-bacterial effect Effects 0.000 title claims abstract description 26
- 239000011941 photocatalyst Substances 0.000 title claims abstract description 25
- 238000002360 preparation method Methods 0.000 title claims abstract description 23
- 239000004744 fabric Substances 0.000 claims abstract description 44
- 229920000747 poly(lactic acid) Polymers 0.000 claims abstract description 29
- 239000004626 polylactic acid Substances 0.000 claims abstract description 29
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 26
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000002994 raw material Substances 0.000 claims abstract description 15
- 229920002545 silicone oil Polymers 0.000 claims abstract description 13
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 13
- 239000011787 zinc oxide Substances 0.000 claims abstract description 13
- 239000004594 Masterbatch (MB) Substances 0.000 claims abstract description 9
- 238000010438 heat treatment Methods 0.000 claims description 40
- 238000007664 blowing Methods 0.000 claims description 37
- 238000000034 method Methods 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 5
- 238000001125 extrusion Methods 0.000 claims description 2
- 238000005491 wire drawing Methods 0.000 claims description 2
- 238000004804 winding Methods 0.000 claims 2
- 238000001914 filtration Methods 0.000 abstract description 8
- 230000002195 synergetic effect Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 description 6
- 238000000465 moulding Methods 0.000 description 6
- 239000004745 nonwoven fabric Substances 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 239000000155 melt Substances 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 238000005096 rolling process Methods 0.000 description 4
- 230000003115 biocidal effect Effects 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 208000035473 Communicable disease Diseases 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- 241000700605 Viruses Species 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- TUJKJAMUKRIRHC-UHFFFAOYSA-N hydroxyl Chemical compound [OH] TUJKJAMUKRIRHC-UHFFFAOYSA-N 0.000 description 2
- 208000015181 infectious disease Diseases 0.000 description 2
- -1 oxygen anion Chemical class 0.000 description 2
- 230000001954 sterilising effect Effects 0.000 description 2
- 241000711573 Coronaviridae Species 0.000 description 1
- 230000010718 Oxidation Activity Effects 0.000 description 1
- 230000000840 anti-viral effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000003385 bacteriostatic effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 230000001877 deodorizing effect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000001815 facial effect Effects 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- DLINORNFHVEIFE-UHFFFAOYSA-N hydrogen peroxide;zinc Chemical compound [Zn].OO DLINORNFHVEIFE-UHFFFAOYSA-N 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000000241 respiratory effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000009385 viral infection Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- RNWHGQJWIACOKP-UHFFFAOYSA-N zinc;oxygen(2-) Chemical compound [O-2].[Zn+2] RNWHGQJWIACOKP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
- A41D13/05—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches protecting only a particular body part
- A41D13/11—Protective face masks, e.g. for surgical use, or for use in foul atmospheres
- A41D13/1192—Protective face masks, e.g. for surgical use, or for use in foul atmospheres with antimicrobial agent
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D27/00—Details of garments or of their making
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D31/00—Materials specially adapted for outerwear
- A41D31/04—Materials specially adapted for outerwear characterised by special function or use
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D31/00—Materials specially adapted for outerwear
- A41D31/04—Materials specially adapted for outerwear characterised by special function or use
- A41D31/30—Antimicrobial, e.g. antibacterial
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/04—Polyesters derived from hydroxycarboxylic acids, e.g. lactones
-
- 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
- D01F1/103—Agents inhibiting growth of microorganisms
-
- 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
- D01F6/88—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds
- D01F6/92—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of polyesters
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/542—Adhesive fibres
- D04H1/55—Polyesters
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/56—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving in association with fibre formation, e.g. immediately following extrusion of staple fibres
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D2500/00—Materials for garments
- A41D2500/50—Synthetic resins or rubbers
- A41D2500/52—Synthetic resins or rubbers in sheet form
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/06—Biodegradable
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
The invention discloses a preparation method of a degradable photocatalyst antibacterial mask, which relates to the technical field of masks and comprises the following steps: (1) preparing a degradable nose bridge strip; (2) preparing a mask body; (3) the degradable nose bridge strip is arranged on the mask body. The invention has the beneficial effects that: the degradable nose bridge strip and the melt-blown cloth both take polylactic acid as raw materials, have degradable performance, and have synergistic effect among the raw materials of the degradable nose bridge strip, so that the prepared degradable nose bridge strip has better rebound rate and strength, and when the proportion of the polylactic acid, the silicone oil and the titanium dioxide is changed, the prepared nose bridge strip cannot be molded, and the rebound rate and the strength cannot meet the requirements. The raw materials in the melt-blown cloth act synergistically, so that the prepared melt-blown cloth is good in filtering efficiency and antibacterial effect, and when the mass ratio of polylactic acid to electret master batch to nano zinc oxide is changed, the filtering performance and antibacterial performance of the melt-blown cloth are reduced.
Description
Technical Field
The invention relates to the technical field of masks, in particular to a preparation method of a degradable photocatalyst antibacterial mask.
Background
The mask is an important line of defense for preventing respiratory infectious diseases, and can reduce the infection risk of novel coronavirus. The mask is reasonably selected and used, so that virus infection can be effectively prevented. Generally, the mask on the market can only block bacteria and viruses at most outside the mask, and cannot decompose harmful substances. After about 30 minutes, a common mask becomes an infection source and is harmful to human health.
Photocatalysts are safe and clean purification materials internationally at present, and are widely applied to the fields of medicines, foods, cosmetics and the like in areas such as europe, the united states, japan, korea and the like. Has strong sterilizing, deodorizing, gas-proofing and air-purifying properties. Because the self-cleaning function of photocatalyst has been used in the protective facial mask field gradually, through the high-efficient decomposability of photocatalyst, can in time filter and decompose pollutants such as haze, pollen, bacterium and virus for ensure breathe sanitation and hygiene. For example, patent application with publication number CN111466653A discloses a photocatalyst mask.
In addition, with globalization and rapid development of economy, human activities are more and more frequent and intensive, and the influence on the nature is greater and greater. The occurrence and prevalence of infectious diseases are major events affecting human life safety. Scientific prevention and cure become the key, and the development and production of the antiviral mask become the trend. In addition, along with the enhancement of the protection consciousness of the whole people, the disposable mask garbage can cause huge pollution, so that the development of a novel degradable mask is urgently needed, and the environmental pollution is reduced.
Disclosure of Invention
The invention aims to provide a preparation method of a degradable mask with antibacterial performance.
The invention solves the technical problems through the following technical means:
a preparation method of a degradable photocatalyst antibacterial mask comprises the following steps:
(1) preparing a degradable nose bridge strip: mixing polylactic acid, silicone oil and titanium dioxide according to the mass ratio of 1:0.001:0.011, and then adding the mixture into an extruder for extrusion and wire drawing;
(2) preparing a mask body: the mask body comprises melt-blown cloth, and the preparation method of the melt-blown cloth comprises the following steps: mixing polylactic acid, electret master batches and nano zinc oxide according to the mass ratio of 95-96:4-5:4-6, and melt-blowing by a melt-blowing machine to obtain melt-blown fabric;
(3) the degradable nose bridge strip is arranged on the mask body.
Has the advantages that: the degradable nose bridge piece and the melt-blown cloth both take polylactic acid as raw materials, and have degradable performance, and the nano zinc dioxide has a self-cleaning function. Under the illumination condition, the electron e on the valence band of the nano zinc oxide-Excited to the conduction band, leaving a positively charged hole (H) in the valence band+)，e-And H+Will react with oxygen, hydroxyl radical and water adsorbed on the surface of the material to produce hydroxyl radical, oxygen anion, hydrogen peroxide and other substances. Wherein H+And hydroxyl has strong oxidation activity, can break chemical bonds of most organic matters, and can decompose various components forming microorganisms so as to play a role in sterilization; in addition, the oxygen anions have higher reducing capability and also have an antibacterial effect. The raw materials of the degradable nose bridge strip have synergistic effect, so that the resilience rate and the strength of the prepared degradable nose bridge strip are good, when the proportion of polylactic acid, silicone oil and titanium dioxide is changed, the prepared nose bridge strip cannot be molded, and the resilience rate and the strength cannot meet the requirements.
The raw materials in the melt-blown cloth act synergistically, so that the prepared melt-blown cloth is good in filtering efficiency and antibacterial effect, and when the mass ratio of polylactic acid to electret master batch to nano zinc oxide is changed, the filtering performance and antibacterial performance of the melt-blown cloth are reduced.
Preferably, after the raw material is molten through a heating zone 1, a heating zone 2, a heating zone 3 and a heating zone 4 in sequence in a cylinder of an extruder, the raw material is extruded and molded through a die 1 zone and a die 2 zone, and finally subjected to traction 1, traction 2 and traction 3.
Preferably, the temperatures of the heating zone 1, the heating zone 2, the heating zone 3 and the heating zone 4 are 130 ℃, 150 ℃, 160 ℃ and 170 ℃ respectively, the temperatures of the mould 1 zone and the mould 2 zone are 172 ℃ and 175 ℃ respectively, and the rotation speeds of the traction zone 1, the traction zone 2 and the traction zone 3 are 100rpm, 510rpm and 624rpm respectively.
Preferably, the meltblown system sequentially passes through five temperature zones, which are 190 ℃, 200-.
Preferably, the blowing distance of the melt blowing machine is 150-.
Preferably, the rotating speed of a main machine in the melt-blowing machine is adjusted to be 200 r/min.
Preferably, the meltblown fabric obtained by melt-blowing is subjected to electret treatment, and the electret voltage is 150-200V.
Preferably, the obtained melt-blown fabric is rolled, and the rolling speed is 700-750 r/min.
Preferably, the mass ratio of the polylactic acid to the electret master batch to the nano zinc oxide is 95:5: 6.
Preferably, the mass ratio of the polylactic acid to the electret master batch to the nano zinc oxide is 96:4: 4.
The invention has the advantages that: the degradable nose bridge strip and the melt-blown cloth both take polylactic acid as raw materials, have degradable performance, and have synergistic effect among the raw materials of the degradable nose bridge strip, so that the prepared degradable nose bridge strip has better rebound rate and strength, and when the proportion of the polylactic acid, the silicone oil and the titanium dioxide is changed, the prepared nose bridge strip cannot be molded, and the rebound rate and the strength cannot meet the requirements.
The raw materials in the melt-blown cloth act synergistically, so that the prepared melt-blown cloth is good in filtering efficiency and antibacterial effect, and when the mass ratio of polylactic acid to electret master batch to nano zinc oxide is changed, the filtering performance and antibacterial performance of the melt-blown cloth are reduced.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but 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 invention.
Test materials, reagents and the like used in the following examples are commercially available unless otherwise specified.
The specific techniques or conditions not specified in the examples can be performed according to the techniques or conditions described in the literature in the field or according to the product specification.
Example 1
The degradable photocatalyst antibacterial mask comprises a mask body and a degradable nose bridge strip positioned on the mask body;
the preparation method of the degradable nose bridge strip comprises the following steps: mixing polylactic acid, silicone oil and titanium dioxide according to the mass ratio of 1:0.001:0.011, adding the mixture into an extruder, extruding and drawing, making the raw materials into molten state sequentially through a heating zone 1, a heating zone 2, a heating zone 3 and a heating zone 4 in a barrel of the extruder, extruding and molding through a mould 1 zone and a mould 2 zone, and finally performing traction 1, traction 2 and traction 3, wherein the temperatures of the heating zone 1, the heating zone 2, the heating zone 3 and the heating zone 4 are respectively 130 ℃, 150 ℃, 160 ℃ and 170 ℃, the temperatures of the mould 1 zone and the mould 2 zone are respectively 172 ℃, 175 ℃, and the rotating speeds of the traction 1, the traction 2 and the traction 3 are respectively 100rpm, 510rpm and 624 rpm.
The mask body comprises melt-blown cloth, and the preparation method of the melt-blown cloth comprises the following steps: mixing polylactic acid, electret master batches and nano zinc oxide according to the mass ratio of 95:5:6, and carrying out melt-blowing by a melt-blowing machine to obtain the melt-blown fabric. And carrying out electret treatment on the melt-blown cloth obtained by melt-blowing, wherein the electret voltage is 150V, and the obtained melt-blown cloth is rolled at the rolling speed of 700 r/min. The model of the melt blowing machine in the embodiment is a 45-degree direct injection type melt blowing machine, wherein when the melt blowing machine is used, the temperatures of five temperature zones are adjusted to be 190 ℃, 200 ℃, 210 ℃ and 220 ℃, and the temperature of an oven is adjusted to be 230 ℃, namely the air outlet temperature is adjusted; meanwhile, the rotating speed of the fan is adjusted to 800r/min, and the blowing distance of the melt-blowing machine is adjusted to 150mm, so that the melted mixed material can be sprayed out from the die opening; finally, the rotating speed of the main machine is adjusted to be 200r/min, so that the discharge amount is controlled.
Adopt prior art to stack nonwoven fabric, the melt-blown fabric in this embodiment, nonwoven fabric in proper order, and compound molding obtains the gauze mask body, then the bridge of the nose strip is installed on the gauze mask body, obtains the antibiotic gauze mask of degradable photocatalyst promptly.
Example 2
The degradable photocatalyst antibacterial mask comprises a mask body and a degradable nose bridge strip positioned on the mask body;
the preparation method of the degradable nose bridge strip comprises the following steps: mixing polylactic acid, silicone oil and titanium dioxide according to the mass ratio of 1:0.001:0.011, adding the mixture into an extruder, extruding and drawing, making the raw materials into molten state sequentially through a heating zone 1, a heating zone 2, a heating zone 3 and a heating zone 4 in a barrel of the extruder, extruding and molding through a mould 1 zone and a mould 2 zone, and finally performing traction 1, traction 2 and traction 3, wherein the temperatures of the heating zone 1, the heating zone 2, the heating zone 3 and the heating zone 4 are respectively 130 ℃, 150 ℃, 160 ℃ and 170 ℃, the temperatures of the mould 1 zone and the mould 2 zone are respectively 172 ℃, 175 ℃, and the rotating speeds of the traction 1, the traction 2 and the traction 3 are respectively 100rpm, 510rpm and 624 rpm.
The mask body comprises melt-blown cloth, and the preparation method of the melt-blown cloth comprises the following steps: mixing polylactic acid, electret master batches and nano zinc oxide according to the mass ratio of 96:4:4, and carrying out melt-blowing by a melt-blowing machine to obtain the melt-blown fabric. And carrying out electret treatment on the melt-blown cloth obtained by melt-blowing, wherein the electret voltage is 150V, and the obtained melt-blown cloth is rolled at the rolling speed of 750 r/min. The model of the melt blowing machine in the embodiment is a 45-degree direct injection type melt blowing machine, wherein when the melt blowing machine is used, the temperatures of five temperature zones are adjusted to be 190 ℃, 200 ℃, 210 ℃, 220 ℃ and 230 ℃ respectively, and the temperature of an oven is adjusted to be 230 ℃, namely the air outlet temperature is adjusted; meanwhile, the rotating speed of the fan is adjusted to 800r/min, and the blowing distance of the melt-blowing machine is adjusted to 150mm, so that the melted mixed material can be sprayed out from the die opening; finally, the rotating speed of the main machine is adjusted to be 200r/min, so that the discharge amount is controlled.
Adopt prior art to stack nonwoven fabric, the melt-blown fabric in this embodiment, nonwoven fabric in proper order, and compound molding obtains the gauze mask body, then the bridge of the nose strip is installed on the gauze mask body, obtains the antibiotic gauze mask of degradable photocatalyst promptly.
Example 3
The degradable photocatalyst antibacterial mask comprises a mask body and a degradable nose bridge strip positioned on the mask body;
the preparation method of the degradable nose bridge strip comprises the following steps: mixing polylactic acid, silicone oil and titanium dioxide according to the mass ratio of 1:0.001:0.011, adding the mixture into an extruder, extruding and drawing, making the raw materials into molten state sequentially through a heating zone 1, a heating zone 2, a heating zone 3 and a heating zone 4 in a barrel of the extruder, extruding and molding through a mould 1 zone and a mould 2 zone, and finally performing traction 1, traction 2 and traction 3, wherein the temperatures of the heating zone 1, the heating zone 2, the heating zone 3 and the heating zone 4 are respectively 130 ℃, 150 ℃, 160 ℃ and 170 ℃, the temperatures of the mould 1 zone and the mould 2 zone are respectively 172 ℃, 175 ℃, and the rotating speeds of the traction 1, the traction 2 and the traction 3 are respectively 100rpm, 510rpm and 624 rpm.
The mask body comprises melt-blown cloth, and the preparation method of the melt-blown cloth comprises the following steps: mixing polylactic acid, electret master batches and nano zinc oxide according to the mass ratio of 96:4:4, and carrying out melt-blowing by a melt-blowing machine to obtain the melt-blown fabric. And carrying out electret treatment on the melt-blown cloth obtained by melt-blowing, wherein the electret voltage is 150V, and the obtained melt-blown cloth is rolled at the rolling speed of 750 r/min. The model of the melt-blowing machine in the embodiment is a 45-degree direct injection type melt-blowing machine, wherein when the melt-blowing machine is used, the temperatures of five temperature zones are adjusted at first, namely 190 ℃, 200 ℃, 220 ℃, 230 ℃ and 240 ℃, and the temperature of an oven is adjusted to 230 ℃, namely the air outlet temperature is adjusted; meanwhile, the rotating speed of the fan is adjusted to 800r/min, and the blowing distance of the melt-blowing machine is adjusted to 150mm, so that the melted mixed material can be sprayed out from the die opening; finally, the rotating speed of the main machine is adjusted to be 200r/min, so that the discharge amount is controlled.
Adopt prior art to stack nonwoven fabric, the melt-blown fabric in this embodiment, nonwoven fabric in proper order, and compound molding obtains the gauze mask body, then the bridge of the nose strip is installed on the gauze mask body, obtains the antibiotic gauze mask of degradable photocatalyst promptly.
Comparative example 1
The preparation method of the nose bridge strip is different from the preparation method of the nose bridge strip in the following steps: the mass ratio of the polylactic acid to the silicone oil to the titanium dioxide is 1:0:0, wherein the content of the silicone oil to the titanium dioxide is 0.
Comparative example 2
The preparation method of the nose bridge strip is different from the preparation method of the nose bridge strip in the following steps: the mass ratio of the polylactic acid to the silicone oil to the titanium dioxide is 0.8:0.001: 0.011.
Comparative example 3
The preparation method of the nose bridge strip is different from the preparation method of the nose bridge strip in the following steps: the mass ratio of the polylactic acid to the silicone oil to the titanium dioxide is 1:0.0001: 0.001.
Comparative example 4
The preparation method of the melt-blown fabric is different from the preparation method of the melt-blown fabric in that: the mass ratio of the polylactic acid to the electret master batch to the nano zinc oxide is 97:3: 2.
The performance of the nose bridge strips of example 1 and comparative examples 1 to 3 was measured, and the measurement results are shown in table 1.
Table 1 shows the results of the measurements of the properties of the nose bridge strip
As can be seen from Table 1, when the proportions of the polylactic acid, the silicone oil and the titanium dioxide are changed, the prepared nose bridge strip cannot be molded, and the rebound rate and the strength cannot meet the requirements.
The performance of the meltblown fabrics of examples 1, 2 and 4 were measured and the results are shown in table 2. And (3) detection standard of filtration efficiency: appendix A of GB/T32610-2016 specifies implementation. And (3) the detection standard of the bacteriostatic rate is as follows: GB/T20944.3.
Table 2 shows the results of the measurement of the meltblown properties
As can be seen from table 2, when the amount of the electret master batch is decreased and the content of the polylactic acid is increased, the filtration efficiency of the meltblown fabric is decreased.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A preparation method of a degradable photocatalyst antibacterial mask is characterized by comprising the following steps: the method comprises the following steps:
(1) preparing a degradable nose bridge strip: mixing polylactic acid, silicone oil and titanium dioxide according to the mass ratio of 1:0.001:0.011, and then adding the mixture into an extruder for extrusion and wire drawing;
(2) preparing a mask body: the mask body comprises melt-blown cloth, and the preparation method of the melt-blown cloth comprises the following steps: mixing polylactic acid, electret master batches and nano zinc oxide according to the mass ratio of 95-96:4-5:4-6, and melt-blowing by a melt-blowing machine to obtain melt-blown fabric;
(3) the degradable nose bridge strip is arranged on the mask body.
2. The method for preparing the degradable photocatalyst antibacterial mask according to claim 1, which is characterized in that: the raw materials are sequentially changed into molten state through a heating zone 1, a heating zone 2, a heating zone 3 and a heating zone 4 in a charging barrel of an extruder, then are extruded and molded through a mould 1 zone and a mould 2 zone, and finally are subjected to traction 1, traction 2 and traction 3.
3. The method for preparing the degradable photocatalyst antibacterial mask according to claim 2, which is characterized in that: the temperatures of the heating zone 1, the heating zone 2, the heating zone 3 and the heating zone 4 are respectively 130 ℃, 150 ℃, 160 ℃ and 170 ℃, the temperatures of the mould 1 zone and the mould 2 zone are respectively 172 ℃ and 175 ℃, and the rotating speeds of the traction zone 1, the traction zone 2 and the traction zone 3 are respectively 100rpm, 510rpm and 624 rpm.
4. The method for preparing the degradable photocatalyst antibacterial mask according to claim 1, which is characterized in that: the said melt blowing machine passes through five temperature regions in turn, which are 190 deg.C, 200 deg.C, 210 deg.C, 230 deg.C, 220 deg.C, 240 deg.C.
5. The method for preparing the degradable photocatalyst antibacterial mask according to claim 1, which is characterized in that: the blowing distance of the melt-blowing machine is 150-.
6. The method for preparing the degradable photocatalyst antibacterial mask according to claim 1, which is characterized in that: the rotating speed of a main machine in the melt-blowing machine is adjusted to be 200 r/min.
7. The method for preparing the degradable photocatalyst antibacterial mask according to claim 1, which is characterized in that: and performing electret treatment on the melt-blown cloth obtained by melt-blowing, wherein the electret voltage is 150-200V.
8. The method for preparing the degradable photocatalyst antibacterial mask according to claim 1, which is characterized in that: and winding the obtained melt-blown fabric, wherein the winding speed is 700-750 r/min.
9. The method for preparing the degradable photocatalyst antibacterial mask according to claim 1, which is characterized in that: the mass ratio of the polylactic acid to the electret master batch to the nano zinc oxide is 95:5: 6.
10. The method for preparing the degradable photocatalyst antibacterial mask according to claim 1, which is characterized in that: the mass ratio of the polylactic acid to the electret master batch to the nano zinc oxide is 96:4: 4.
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| CN115704183A (en) * | 2021-08-16 | 2023-02-17 | 大禾科技发展(南京)有限公司 | Biodegradable polylactic acid antibacterial melt-blown fabric for mask |
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