CN111424422A - Mask panel material and preparation method thereof - Google Patents
Mask panel material and preparation method thereof Download PDFInfo
- Publication number
- CN111424422A CN111424422A CN202010336601.5A CN202010336601A CN111424422A CN 111424422 A CN111424422 A CN 111424422A CN 202010336601 A CN202010336601 A CN 202010336601A CN 111424422 A CN111424422 A CN 111424422A
- Authority
- CN
- China
- Prior art keywords
- parts
- panel material
- mask panel
- mask
- mixed solution
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 239000000463 material Substances 0.000 title claims abstract description 59
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 38
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims abstract description 30
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000002270 dispersing agent Substances 0.000 claims abstract description 24
- BCZXFFBUYPCTSJ-UHFFFAOYSA-L Calcium propionate Chemical compound [Ca+2].CCC([O-])=O.CCC([O-])=O BCZXFFBUYPCTSJ-UHFFFAOYSA-L 0.000 claims abstract description 19
- 235000010331 calcium propionate Nutrition 0.000 claims abstract description 19
- 239000004330 calcium propionate Substances 0.000 claims abstract description 19
- 239000011787 zinc oxide Substances 0.000 claims abstract description 19
- LUEWUZLMQUOBSB-FSKGGBMCSA-N (2s,3s,4s,5s,6r)-2-[(2r,3s,4r,5r,6s)-6-[(2r,3s,4r,5s,6s)-4,5-dihydroxy-2-(hydroxymethyl)-6-[(2r,4r,5s,6r)-4,5,6-trihydroxy-2-(hydroxymethyl)oxan-3-yl]oxyoxan-3-yl]oxy-4,5-dihydroxy-2-(hydroxymethyl)oxan-3-yl]oxy-6-(hydroxymethyl)oxane-3,4,5-triol Chemical compound O[C@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@H]1O[C@@H]1[C@@H](CO)O[C@@H](O[C@@H]2[C@H](O[C@@H](OC3[C@H](O[C@@H](O)[C@@H](O)[C@H]3O)CO)[C@@H](O)[C@H]2O)CO)[C@H](O)[C@H]1O LUEWUZLMQUOBSB-FSKGGBMCSA-N 0.000 claims abstract description 18
- 235000001206 Amorphophallus rivieri Nutrition 0.000 claims abstract description 18
- 229920002581 Glucomannan Polymers 0.000 claims abstract description 18
- 229920002752 Konjac Polymers 0.000 claims abstract description 18
- 239000004088 foaming agent Substances 0.000 claims abstract description 18
- 229940046240 glucomannan Drugs 0.000 claims abstract description 18
- 239000000252 konjac Substances 0.000 claims abstract description 18
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- 229910000278 bentonite Inorganic materials 0.000 claims abstract description 17
- 239000000440 bentonite Substances 0.000 claims abstract description 17
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229920002401 polyacrylamide Polymers 0.000 claims abstract description 17
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000002612 dispersion medium Substances 0.000 claims abstract description 16
- 239000005011 phenolic resin Substances 0.000 claims abstract description 16
- 229920001568 phenolic resin Polymers 0.000 claims abstract description 16
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 claims abstract description 15
- 235000010413 sodium alginate Nutrition 0.000 claims abstract description 15
- 239000000661 sodium alginate Substances 0.000 claims abstract description 15
- 229940005550 sodium alginate Drugs 0.000 claims abstract description 15
- 239000011780 sodium chloride Substances 0.000 claims abstract description 15
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 13
- 235000012054 meals Nutrition 0.000 claims abstract description 11
- 241001312219 Amorphophallus konjac Species 0.000 claims abstract 3
- 239000011259 mixed solution Substances 0.000 claims description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 238000001035 drying Methods 0.000 claims description 16
- 238000002844 melting Methods 0.000 claims description 15
- 230000008018 melting Effects 0.000 claims description 15
- 230000009471 action Effects 0.000 claims description 14
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 12
- 238000005507 spraying Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 10
- 239000000835 fiber Substances 0.000 claims description 9
- 230000008961 swelling Effects 0.000 claims description 9
- 238000002791 soaking Methods 0.000 claims description 8
- 239000000725 suspension Substances 0.000 claims description 7
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical group OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 6
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 6
- 229910052799 carbon Inorganic materials 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 229920000570 polyether Polymers 0.000 claims description 6
- 239000000243 solution Substances 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 238000001132 ultrasonic dispersion Methods 0.000 claims description 6
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 claims description 4
- 239000004156 Azodicarbonamide Substances 0.000 claims description 4
- VRFNYSYURHAPFL-UHFFFAOYSA-N [(4-methylphenyl)sulfonylamino]urea Chemical compound CC1=CC=C(S(=O)(=O)NNC(N)=O)C=C1 VRFNYSYURHAPFL-UHFFFAOYSA-N 0.000 claims description 4
- XOZUGNYVDXMRKW-AATRIKPKSA-N azodicarbonamide Chemical group NC(=O)\N=N\C(N)=O XOZUGNYVDXMRKW-AATRIKPKSA-N 0.000 claims description 4
- 235000019399 azodicarbonamide Nutrition 0.000 claims description 4
- -1 polypropylene Polymers 0.000 claims description 4
- 239000004743 Polypropylene Substances 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 1
- 238000009210 therapy by ultrasound Methods 0.000 claims 1
- 241000282414 Homo sapiens Species 0.000 abstract description 10
- 239000013618 particulate matter Substances 0.000 abstract description 6
- 238000000926 separation method Methods 0.000 abstract 1
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- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 241000205585 Aquilegia canadensis Species 0.000 description 1
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 208000024172 Cardiovascular disease Diseases 0.000 description 1
- 229920001661 Chitosan Polymers 0.000 description 1
- 235000005979 Citrus limon Nutrition 0.000 description 1
- 244000131522 Citrus pyriformis Species 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 235000010254 Jasminum officinale Nutrition 0.000 description 1
- 240000005385 Jasminum sambac Species 0.000 description 1
- 235000006679 Mentha X verticillata Nutrition 0.000 description 1
- 235000002899 Mentha suaveolens Nutrition 0.000 description 1
- 235000001636 Mentha x rotundifolia Nutrition 0.000 description 1
- 244000082204 Phyllostachys viridis Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 244000269722 Thea sinensis Species 0.000 description 1
- 239000000728 ammonium alginate Substances 0.000 description 1
- 235000010407 ammonium alginate Nutrition 0.000 description 1
- KPGABFJTMYCRHJ-YZOKENDUSA-N ammonium alginate Chemical compound [NH4+].[NH4+].O1[C@@H](C([O-])=O)[C@@H](OC)[C@H](O)[C@H](O)[C@@H]1O[C@@H]1[C@@H](C([O-])=O)O[C@@H](O)[C@@H](O)[C@H]1O KPGABFJTMYCRHJ-YZOKENDUSA-N 0.000 description 1
- 239000003242 anti bacterial agent Substances 0.000 description 1
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- 125000003118 aryl group Chemical group 0.000 description 1
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- 230000008901 benefit Effects 0.000 description 1
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- 210000003123 bronchiole Anatomy 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
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- 238000013329 compounding Methods 0.000 description 1
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- 201000010099 disease Diseases 0.000 description 1
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- 238000009826 distribution Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
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- 238000005187 foaming Methods 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 235000009569 green tea Nutrition 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 239000000419 plant extract Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
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- 239000002994 raw material Substances 0.000 description 1
- 230000000241 respiratory effect Effects 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 208000023504 respiratory system disease Diseases 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
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- 230000008093 supporting effect Effects 0.000 description 1
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- 231100000419 toxicity Toxicity 0.000 description 1
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- 238000002604 ultrasonography Methods 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
- 239000000230 xanthan gum Substances 0.000 description 1
- 235000010493 xanthan gum Nutrition 0.000 description 1
- 229920001285 xanthan gum Polymers 0.000 description 1
- 229940082509 xanthan gum Drugs 0.000 description 1
Classifications
-
- 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
- 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
- D06M13/10—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 oxygen
- D06M13/184—Carboxylic acids; Anhydrides, halides or salts thereof
- D06M13/188—Monocarboxylic acids; Anhydrides, halides or salts thereof
-
- 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
- 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
- A41D31/08—Heat resistant; Fire retardant
-
- 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
- A41D31/12—Hygroscopic; Water retaining
-
- 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
- A41D31/14—Air permeable, i.e. capable of being penetrated by gases
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- 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
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/08—Melt spinning methods
- D01D5/098—Melt spinning methods with simultaneous stretching
- D01D5/0985—Melt spinning methods with simultaneous stretching by means of a flowing gas (e.g. melt-blowing)
-
- 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
-
- 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
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/10—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one other macromolecular compound obtained by reactions only involving carbon-to-carbon unsaturated bonds as constituent
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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
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/16—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one other macromolecular compound obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds as constituent
-
- 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
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/18—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from other substances
-
- 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
- D04H1/541—Composite fibres, e.g. sheath-core, sea-island or side-by-side; Mixed fibres
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- 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
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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
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
- D06M11/36—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
- D06M11/44—Oxides or hydroxides of elements of Groups 2 or 12 of the Periodic Table; Zincates; Cadmates
-
- 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
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/77—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with silicon or compounds thereof
- D06M11/78—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with silicon or compounds thereof with silicon; with halides or oxyhalides of silicon; with fluorosilicates
-
- 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
-
- 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
- D06M2101/02—Natural fibres, other than mineral fibres
- D06M2101/04—Vegetal fibres
- D06M2101/06—Vegetal fibres cellulosic
-
- 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
- D06M2101/26—Polymers or copolymers of unsaturated carboxylic acids or derivatives thereof
-
- 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
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Abstract
The invention discloses a mask surface plate material and a preparation method thereof, belonging to the technical field of materials. The mask panel material is prepared from the following components in parts by weight: 90-95 parts of phenolic resin, 0.1-1 part of foaming agent, 20-40 parts of pulp meal, 10-30 parts of konjac glucomannan, 5-10 parts of activated carbon, 5-10 parts of sodium alginate, 5-15 parts of polyacrylamide, 0.1-1 part of sodium chloride, 0.1-2 parts of calcium propionate, 0.1-2 parts of bentonite, 0.1-2 parts of zinc oxide, 0.1-1 part of silane coupling agent, 1-5 parts of dispersion medium and 1-5 parts of dispersing agent. The gauze mask panel material that provides, particulate matter in can not only the effective separation air is in order to prevent that the particulate matter from being inhaled by the human body, can also adsorb the vapour of human exhalation, promotes the comfort of wearing.
Description
Technical Field
The invention relates to the technical field of materials, in particular to a mask panel material and a preparation method thereof.
Background
Noise pollution, water pollution, air pollution, solid waste pollution are juxtaposed to four public seas worldwide. With the development of society, air pollution is becoming more serious, and air quality not only affects the living environment of people, but also is directly related to human health. PM2.5, pathogenic bacteria and viruses in the air are enriched, and are deposited in the upper respiratory tract even go deep into bronchioles and alveoli after being inhaled by a human body, so that the ventilation function of the lung is influenced. In addition, PM2.5, germs and viruses in the air are carcinogenic to human beings, even cause cardiovascular diseases, respiratory diseases, lung-related diseases and other symptoms which are difficult to completely cure, so that the problem of preventing and treating haze and ensuring the cleanliness of air inhaled into the human body is a problem to be solved urgently.
People develop various methods for preventing and treating haze and ensuring the cleanliness of air sucked into a human body, and although the methods have certain performance, the methods are not projects which can be completed in a short time. In daily life, people often use masks, which are convenient and applicable, but masks sold in the current market still have defects in the aspects of hygroscopicity, filterability and the like.
Chinese patent CN201811626664.3 provides a fragrant non-woven fabric mask and a preparation method thereof, the mask comprises two layers of fragrant non-woven fabrics and a layer of filter paper, and the fragrant non-woven fabrics are made of the following raw materials: polypropylene, bamboo fiber, chitosan, xanthan gum, honeysuckle, jasmine, mint, lemon leaves and fresh green tea leaves, and the preparation method mainly comprises the following steps: preparing plant extract, preparing fragrant fiber, preparing fragrant non-woven fabric, preparing a mask and the like. The mask is made by spinning non-woven fabrics made of fibers prepared from plant aromatic components, and has lasting fragrance.
Chinese patent CN201710012229.0 provides a particulate matter barrier material and application thereof in haze prevention, and relates to the field of respiratory protection products, wherein the particulate matter barrier material comprises cationic polymer, and the cationic polymer accounts for 0.1-10% of the particulate matter barrier material by mass. The filter effect of antifog haze material and antifog haze equipment can be strengthened to particulate matter barrier material, improves and prevents the haze effect.
The improvement of prior art to gauze mask panel material is mainly in order to prevent the haze effect more, and to the discomfort that brings of wearing the in-process expired vapour, most unable processing has certain limitation.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a mask panel material and a preparation method thereof, which can effectively block particles in the air to prevent the particles from being inhaled by a human body, can adsorb vapor exhaled by the human body, and improve the wearing comfort.
In order to achieve the purpose, the invention provides the following technical scheme:
on one hand, the invention provides a mask surface plate material which is prepared from the following components in parts by weight:
90-95 parts of phenolic resin, 0.1-1 part of foaming agent, 20-40 parts of pulp meal, 10-30 parts of konjac glucomannan, 5-10 parts of activated carbon, 5-10 parts of sodium alginate, 5-15 parts of polyacrylamide, 0.1-1 part of sodium chloride, 0.1-2 parts of calcium propionate, 0.1-2 parts of bentonite, 0.1-2 parts of zinc oxide, 0.1-1 part of silane coupling agent, 1-5 parts of dispersion medium and 1-5 parts of dispersing agent.
Further, the blowing agent may be azodicarbonamide, p-toluenesulfonyl semicarbazide, azobisisobutyronitrile, polypropylene, or the like.
The dispersion medium is a solvent such as methanol, ethanol and the like.
The dispersant may be a polyether type hyperdispersant or the like.
On the other hand, the invention provides a preparation method of a mask panel material, which comprises the following specific steps:
1) soaking sodium alginate, polyacrylamide and sodium chloride in water for swelling to prepare a mixed solution I; ultrasonically dispersing calcium propionate, bentonite and zinc oxide in water to obtain a mixed solution II;
2) pulp is taken, pulp meal, active carbon and konjac glucomannan are ultrasonically dispersed in the first mixed solution to prepare turbid liquid;
3) putting the suspension, the phenolic resin, the foaming agent, the silane coupling agent, the dispersion medium and the dispersing agent into a high-speed mixer, mixing and stirring uniformly in advance, and drying to obtain a prepolymer;
4) and (2) putting the prepolymer into a screw extruder for melting, spraying the solution through spinneret orifices of a melting die head, stretching the solution under the action of high-speed hot air flow, then allowing the stretched solution to enter a receiving device, uniformly spraying the mixed solution II prepared in the step 1) into a silk screen after the fibers are gathered on the receiving device to form a net, and completely curing and drying the mixed solution II to obtain the mask panel material.
The antibacterial liquid is coated on the surface of the cellosilk and is attached to the surface, so that the specific surface area of the material is increased, the antibacterial and antiviral properties are improved, and the strength and the flame retardant capability of the material are also improved.
Further, in step 1), the preparation process of the mixed solution one is as follows: and (3) dissolving sodium chloride in water, soaking polyacrylamide and sodium alginate in the water for 4-12 hours, and standing after complete swelling.
Further, in the step 1), the preparation process of the mixed solution two is as follows: the calcium propionate, the bentonite and the zinc oxide are subjected to ultrasonic dispersion for 10-30 minutes under the ultrasonic power of 100-600 kHz to obtain the calcium propionate/zinc oxide composite material.
Further, in the step 2), the ultrasound is dispersed for 10-100 minutes at 20-2000 kHz, preferably 500-1000 kHz.
Further, in the step 3), the drying is carried out for 1-8 hours at the high temperature of 60-120 ℃ and under the negative pressure of 0.1-10 MPa.
Further, in the step 4), the screw extruder is melted at 130-150 ℃, sprayed out through a spinneret orifice of a melting die head at 180-200 ℃, stretched under the action of high-speed hot air flow at 220-250 ℃ and then enters a receiving device.
Further, in the step 4), the curing and drying are completed under the action of high-speed hot air flow at the temperature of 80-120 ℃.
The swelling of the ammonium alginate and the polyacrylamide is beneficial to the subsequent coating in the material, the specific surface area is increased, and the hygroscopicity is strong.
The antibacterial agent, the antiviral agent calcium propionate, the bentonite and the zinc oxide are uniformly dispersed in water, so that the subsequent distribution among the components is facilitated, and the antibacterial and antiviral properties of the material are improved.
The pulp and konjac glucomannan are mutually crosslinked, and under the supporting action of the activated carbon, the pulp and konjac glucomannan have high porosity, and the activated carbon is distributed in the pore diameters of the pulp and konjac glucomannan, so that the mechanical property of the material is improved, and the porous reticular gel material is prepared.
The phenolic resin, the pulp and the konjac glucomannan are mutually crosslinked, and the phenolic resin and the reticular gel material are mutually crosslinked to form a space network structure with high specific surface area. The foaming agent is embedded in the material, and the foaming agent is used for foaming, so that the uniformity of foam holes is facilitated, the compactness of the material is reduced, and the ventilation is smooth.
Melting through a screw extruder, beating the prepolymer into micron-sized particles, uniformly dispersing, improving the compatibility among all components, and fully ensuring the dispersibility of the obtained material so as to obtain excellent performance; the mask panel material prepared simultaneously has the functions of strong adsorption capacity, power in the air adsorption, antibiosis, gas defense, PM2.5 filtration and the like. The viscosity is improved by compounding the polyacrylamide, the pulp and the konjac glucomannan, the active adsorption function is realized, and the comprehensive mechanical property is improved by combining the phenolic resin. Calcium propionate, bentonite, zinc oxide and the like are attached to the surface of the material, and the surface has a plurality of mesopores, so that the material can resist bacteria and prevent toxicity.
Has the beneficial effects that the air conditioner has the advantages that,
the invention provides a mask surface plate material and a preparation method thereof.A network space is formed by the modified material, and the inside of the network space absorbs water vapor, namely exhaled air, and the limited air is dynamically absorbed after the water vapor is locked, so that the dryness inside the mask is ensured; the mask is applied to the outer layer of the mask, so that water vapor and particulate matters in the air are blocked outwards, viruses and bacteria are inhibited, and the mask has better adsorbability.
The material provided by the invention has strong hygroscopicity, can block particulate matters (the filtering efficiency of PM2.5 reaches more than 98%), and is antibacterial and antitoxic. After the mask is manufactured, the mouth and nose of a wearer can be guaranteed to breathe smoothly, the exhaled hot air can be prevented from being inhaled by the human body again, the inside and the outside of the mask can be kept dry, the wearing comfort level is improved, and meanwhile, the mask is beneficial to the health of people.
Detailed Description
The present invention will be described in further detail with reference to specific embodiments, but it should not be construed that the scope of the subject matter of the present invention is limited to the examples.
The process equipment or devices not specifically noted in the following examples are conventional in the art; all chemical materials are commercially available.
Example 1
The mask panel material is prepared from the following components in parts by weight:
90 parts of phenolic resin, 1 part of foaming agent, 20 parts of pulp meal, 30 parts of konjac glucomannan, 5 parts of activated carbon, 10 parts of sodium alginate, 5 parts of polyacrylamide, 1 part of sodium chloride, 0.1 part of calcium propionate, 2 parts of bentonite, 0.1 part of zinc oxide, 1 part of silane coupling agent, 1 part of dispersion medium and 5 parts of dispersing agent;
the blowing agent is azodicarbonamide;
the dispersion medium is ethanol;
the dispersant is polyether type hyper-dispersant.
A preparation method of mask panel material comprises the following specific steps:
1) dissolving sodium chloride in water, soaking polyacrylamide and sodium alginate in water for 12h, and swelling completely to obtain a first mixed solution; performing ultrasonic dispersion on calcium propionate, bentonite and zinc oxide for 30 minutes under the ultrasonic power of 100kHz to obtain a mixed solution II;
2) pulp meal, active carbon and konjac glucomannan are ultrasonically dispersed for 50 minutes at 500kHz in the mixed solution I to prepare suspension;
3) putting the suspension, phenolic resin, foaming agent, silane coupling agent, dispersion medium and dispersing agent into a high-speed mixer, mixing and stirring uniformly in advance, and drying at 120 ℃ under the negative pressure of 10MPa for 1h to obtain prepolymer;
4) and (2) putting the prepolymer into a screw extruder, melting at 130-150 ℃, spraying through spinneret orifices of a melting die head at 180-200 ℃, stretching under the action of high-speed hot air flow at 220-250 ℃, then entering a receiving device, uniformly spraying the mixed liquid II prepared in the step 1) into a silk screen after the fibers are gathered to form a net on the receiving device, and completely curing and drying under the action of high-speed hot air flow at 80-120 ℃ to obtain the mask panel material.
Example 2
The mask panel material is prepared from the following components in parts by weight:
95 parts of phenolic resin, 1 part of foaming agent, 40 parts of pulp meal, 10 parts of konjac glucomannan, 10 parts of activated carbon, 5 parts of sodium alginate, 15 parts of polyacrylamide, 0.1 part of sodium chloride, 2 parts of calcium propionate, 0.1 part of bentonite, 2 parts of zinc oxide, 0.1 part of silane coupling agent, 5 parts of dispersion medium and 1 part of dispersing agent;
the foaming agent is p-toluenesulfonyl semicarbazide;
the dispersion medium is ethanol;
the dispersant is polyether type hyper-dispersant.
A preparation method of mask panel material comprises the following specific steps:
1) dissolving sodium chloride in water, soaking polyacrylamide and sodium alginate in water for 12h, and swelling completely to obtain a first mixed solution; performing ultrasonic dispersion on calcium propionate, bentonite and zinc oxide for 10 minutes under the ultrasonic power of 600kHz to obtain a mixed solution II;
2) pulp meal, active carbon and konjac glucomannan are ultrasonically dispersed in the mixed solution I for 10 minutes at 1000kHz to prepare suspension;
3) putting the turbid liquid, the phenolic resin, the foaming agent, the silane coupling agent, the dispersing medium and the dispersing agent into a high-speed mixer, mixing and stirring uniformly in advance, and drying at the high temperature of 80-100 ℃ under the negative pressure of 0.1MPa for 4 hours to obtain a prepolymer;
4) and (2) putting the prepolymer into a screw extruder, melting at 130-150 ℃, spraying through spinneret orifices of a melting die head at 180-200 ℃, stretching under the action of high-speed hot air flow at 220-250 ℃, then entering a receiving device, uniformly spraying the mixed liquid II prepared in the step 1) into a silk screen after the fibers are gathered to form a net on the receiving device, and completely curing and drying under the action of high-speed hot air flow at 80-120 ℃ to obtain the mask panel material.
Example 3
The mask panel material is prepared from the following components in parts by weight:
95 parts of phenolic resin, 0.5 part of foaming agent, 30 parts of pulp dreg, 20 parts of konjac glucomannan, 8 parts of activated carbon, 8 parts of sodium alginate, 9 parts of polyacrylamide, 0.5 part of sodium chloride, 1 part of calcium propionate, 1 part of bentonite, 1 part of zinc oxide, 1 part of silane coupling agent, 5 parts of dispersion medium and 5 parts of dispersing agent;
the blowing agent is azodicarbonamide;
the dispersion medium is ethanol;
the dispersant is polyether type hyper-dispersant.
A preparation method of mask panel material comprises the following specific steps:
1) dissolving sodium chloride in water, soaking polyacrylamide and sodium alginate in water for 10h, and swelling completely to obtain a first mixed solution; performing ultrasonic dispersion on calcium propionate, bentonite and zinc oxide for 20 minutes under the ultrasonic power of 300kHz to obtain a mixed solution II;
2) pulp meal, active carbon and konjac glucomannan are ultrasonically dispersed in the mixed solution I at 1500kHz for 60 minutes to prepare suspension;
3) putting the turbid liquid, the phenolic resin, the foaming agent, the silane coupling agent, the dispersing medium and the dispersing agent into a high-speed mixer, mixing and stirring uniformly in advance, and drying at the high temperature of 60-70 ℃ under the negative pressure of 5MPa for 8 hours to obtain a prepolymer;
4) and (2) putting the prepolymer into a screw extruder, melting at 130-150 ℃, spraying through spinneret orifices of a melting die head at 180-200 ℃, stretching under the action of high-speed hot air flow at 220-250 ℃, then entering a receiving device, uniformly spraying the mixed liquid II prepared in the step 1) into a silk screen after the fibers are gathered to form a net on the receiving device, and completely curing and drying under the action of high-speed hot air flow at 80-120 ℃ to obtain the mask panel material.
Example 4
The mask panel material is prepared from the following components in parts by weight:
95 parts of phenolic resin, 0.8 part of foaming agent, 25 parts of pulp dreg, 25 parts of konjac glucomannan, 6 parts of activated carbon, 7 parts of sodium alginate, 12 parts of polyacrylamide, 0.5 part of sodium chloride, 1 part of calcium propionate, 1 part of bentonite, 1 part of zinc oxide, 0.6 part of silane coupling agent, 3 parts of dispersion medium and 3 parts of dispersing agent;
the foaming agent is p-toluenesulfonyl semicarbazide;
the dispersion medium is ethanol;
the dispersant is polyether type hyper-dispersant.
A preparation method of mask panel material comprises the following specific steps:
1) dissolving sodium chloride in water, soaking polyacrylamide and sodium alginate in water for 4h, and swelling completely to obtain a first mixed solution; performing ultrasonic dispersion on calcium propionate, bentonite and zinc oxide for 10 minutes under the ultrasonic power of 600kHz to obtain a mixed solution II;
2) pulp meal, active carbon and konjac glucomannan are ultrasonically dispersed in the mixed solution I for 10 minutes at 2000kHz to prepare suspension;
3) putting the turbid liquid, the phenolic resin, the foaming agent, the silane coupling agent, the dispersing medium and the dispersing agent into a high-speed mixer, mixing and stirring uniformly in advance, and drying at the high temperature of 90-100 ℃ under the negative pressure of 3MPa for 2 hours to obtain a prepolymer;
4) and (2) putting the prepolymer into a screw extruder, melting at 130-150 ℃, spraying through spinneret orifices of a melting die head at 180-200 ℃, stretching under the action of high-speed hot air flow at 220-250 ℃, then entering a receiving device, uniformly spraying the mixed liquid II prepared in the step 1) into a silk screen after the fibers are gathered to form a net on the receiving device, and completely curing and drying under the action of high-speed hot air flow at 80-120 ℃ to obtain the mask panel material.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention, and these changes and modifications are also considered to be included in the scope of the invention.
Claims (10)
1. The mask surface plate material is characterized by being prepared from the following components in parts by weight:
90-95 parts of phenolic resin, 0.1-1 part of foaming agent, 20-40 parts of pulp meal, 10-30 parts of konjac glucomannan, 5-10 parts of activated carbon, 5-10 parts of sodium alginate, 5-15 parts of polyacrylamide, 0.1-1 part of sodium chloride, 0.1-2 parts of calcium propionate, 0.1-2 parts of bentonite, 0.1-2 parts of zinc oxide, 0.1-1 part of silane coupling agent, 1-5 parts of dispersion medium and 1-5 parts of dispersing agent.
2. The mask panel material according to claim 1, wherein said foaming agent is selected from azodicarbonamide, p-toluenesulfonyl semicarbazide, azobisisobutyronitrile or polypropylene;
the dispersion medium is methanol or ethanol;
the dispersant is polyether type hyper-dispersant.
3. A preparation method of a mask panel material is characterized by comprising the following specific steps:
1) soaking sodium alginate, polyacrylamide and sodium chloride in water for swelling to prepare a mixed solution I; ultrasonically dispersing calcium propionate, bentonite and zinc oxide in water to obtain a mixed solution II;
2) pulp is taken, pulp meal, active carbon and konjac glucomannan are ultrasonically dispersed in the first mixed solution to prepare turbid liquid;
3) putting the suspension, the phenolic resin, the foaming agent, the silane coupling agent, the dispersion medium and the dispersing agent into a high-speed mixer, mixing and stirring uniformly in advance, and drying to obtain a prepolymer;
4) and (2) putting the prepolymer into a screw extruder for melting, spraying the solution through spinneret orifices of a melting die head, stretching the solution under the action of high-speed hot air flow, then allowing the stretched solution to enter a receiving device, uniformly spraying the mixed solution II prepared in the step 1) into a silk screen after the fibers are gathered on the receiving device to form a net, and completely curing and drying the mixed solution II to obtain the mask panel material.
4. The method for preparing a mask panel material according to claim 3, wherein in the step 1), the first mixed solution is prepared as follows: and (3) dissolving sodium chloride in water, soaking polyacrylamide and sodium alginate in the water for 4-12 hours, and standing after complete swelling.
5. The method for preparing a mask panel material according to claim 3, wherein the second mixture is prepared by the following steps in step 1): the calcium propionate, the bentonite and the zinc oxide are subjected to ultrasonic dispersion for 10-30 minutes under the ultrasonic power of 100-600 kHz to obtain the calcium propionate/zinc oxide composite material.
6. The method for preparing a mask panel material according to claim 3, wherein the ultrasonic treatment in the step 2) is performed by dispersing the mask panel material at 20 to 2000kHz for 10 to 100 minutes.
7. The method for preparing a mask panel material according to claim 3, wherein the drying is performed at a high temperature of 60 to 120 ℃ under a negative pressure of 0.1 to 10MPa for 1 to 8 hours in step 3).
8. The method for preparing a mask panel material according to claim 3, wherein in the step 4), the screw extruder is melted at 130 to 150 ℃, sprayed out through a spinneret orifice of a melting die head at 180 to 200 ℃, stretched under the action of high-speed hot air flow at 220 to 250 ℃, and then enters a receiving device.
9. The method for preparing a mask panel material according to claim 3, wherein the curing and drying in step 4) are carried out under the action of high-speed hot air flow at 80-120 ℃.
10. A mask comprising the mask panel material according to any one of claims 1 to 2.
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| CN202010336601.5A CN111424422A (en) | 2020-04-26 | 2020-04-26 | Mask panel material and preparation method thereof |
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| CN202010336601.5A CN111424422A (en) | 2020-04-26 | 2020-04-26 | Mask panel material and preparation method thereof |
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| CN110041764A (en) * | 2018-05-30 | 2019-07-23 | 陈全莉 | A kind of liquid mask patch and anti-haze antibacterial mask |
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| WO2010120730A1 (en) * | 2009-04-13 | 2010-10-21 | Global Protection Usa, Inc. | Hazardous substance removing materials, apparatus and methods |
| CN107744689A (en) * | 2017-10-13 | 2018-03-02 | 陈木镇 | A kind of filtering material with bacteriostasis and preparation method thereof |
| CN110041764A (en) * | 2018-05-30 | 2019-07-23 | 陈全莉 | A kind of liquid mask patch and anti-haze antibacterial mask |
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