JP2018528072A - Photocatalyst functional nonwoven fabric and method for producing the same - Google Patents
Photocatalyst functional nonwoven fabric and method for producing the same Download PDFInfo
- Publication number
- JP2018528072A JP2018528072A JP2018513292A JP2018513292A JP2018528072A JP 2018528072 A JP2018528072 A JP 2018528072A JP 2018513292 A JP2018513292 A JP 2018513292A JP 2018513292 A JP2018513292 A JP 2018513292A JP 2018528072 A JP2018528072 A JP 2018528072A
- Authority
- JP
- Japan
- Prior art keywords
- nonwoven fabric
- photocatalyst
- coating layer
- photocatalytic
- functional nonwoven
- 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.)
- Granted
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- 239000004745 nonwoven fabric Substances 0.000 title claims abstract description 111
- 239000011941 photocatalyst Substances 0.000 title claims abstract description 108
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 28
- 239000000835 fiber Substances 0.000 claims abstract description 125
- 230000004888 barrier function Effects 0.000 claims abstract description 74
- 239000011247 coating layer Substances 0.000 claims abstract description 73
- 230000001699 photocatalysis Effects 0.000 claims abstract description 72
- 238000000576 coating method Methods 0.000 claims description 71
- 239000002245 particle Substances 0.000 claims description 71
- 239000011248 coating agent Substances 0.000 claims description 70
- 239000007788 liquid Substances 0.000 claims description 34
- 239000002994 raw material Substances 0.000 claims description 22
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 21
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 21
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 21
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 20
- 229910044991 metal oxide Inorganic materials 0.000 claims description 20
- 150000004706 metal oxides Chemical class 0.000 claims description 20
- 239000001301 oxygen Substances 0.000 claims description 20
- 229910052760 oxygen Inorganic materials 0.000 claims description 20
- 239000002923 metal particle Substances 0.000 claims description 19
- 239000011230 binding agent Substances 0.000 claims description 18
- -1 polypropylene Polymers 0.000 claims description 16
- 238000005507 spraying Methods 0.000 claims description 15
- 239000004743 Polypropylene Substances 0.000 claims description 11
- 229920001155 polypropylene Polymers 0.000 claims description 11
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 4
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 4
- QGLKJKCYBOYXKC-UHFFFAOYSA-N nonaoxidotritungsten Chemical compound O=[W]1(=O)O[W](=O)(=O)O[W](=O)(=O)O1 QGLKJKCYBOYXKC-UHFFFAOYSA-N 0.000 claims description 4
- 229910052697 platinum Inorganic materials 0.000 claims description 4
- 229910001930 tungsten oxide Inorganic materials 0.000 claims description 4
- 239000007789 gas Substances 0.000 claims description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 2
- 229910052684 Cerium Inorganic materials 0.000 claims description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 2
- 239000004698 Polyethylene Substances 0.000 claims description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 2
- 229910052788 barium Inorganic materials 0.000 claims description 2
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 claims description 2
- 229910052793 cadmium Inorganic materials 0.000 claims description 2
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 claims description 2
- 229910052791 calcium Inorganic materials 0.000 claims description 2
- 239000011575 calcium Substances 0.000 claims description 2
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims description 2
- 229910052804 chromium Inorganic materials 0.000 claims description 2
- 239000011651 chromium Substances 0.000 claims description 2
- 229910017052 cobalt Inorganic materials 0.000 claims description 2
- 239000010941 cobalt Substances 0.000 claims description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 2
- 229910052737 gold Inorganic materials 0.000 claims description 2
- 239000010931 gold Substances 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 229910052749 magnesium Inorganic materials 0.000 claims description 2
- 239000011777 magnesium Substances 0.000 claims description 2
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims description 2
- 229910052750 molybdenum Inorganic materials 0.000 claims description 2
- 239000011733 molybdenum Substances 0.000 claims description 2
- 229910052759 nickel Inorganic materials 0.000 claims description 2
- 229910000484 niobium oxide Inorganic materials 0.000 claims description 2
- URLJKFSTXLNXLG-UHFFFAOYSA-N niobium(5+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Nb+5].[Nb+5] URLJKFSTXLNXLG-UHFFFAOYSA-N 0.000 claims description 2
- 229920000728 polyester Polymers 0.000 claims description 2
- 229920000573 polyethylene Polymers 0.000 claims description 2
- 238000012545 processing Methods 0.000 claims description 2
- 229910052709 silver Inorganic materials 0.000 claims description 2
- 239000004332 silver Substances 0.000 claims description 2
- 229910052712 strontium Inorganic materials 0.000 claims description 2
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 claims description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 2
- 229910052721 tungsten Inorganic materials 0.000 claims description 2
- 239000010937 tungsten Substances 0.000 claims description 2
- 229910052720 vanadium Inorganic materials 0.000 claims description 2
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims description 2
- 229910052725 zinc Inorganic materials 0.000 claims description 2
- 239000011701 zinc Substances 0.000 claims description 2
- 239000011787 zinc oxide Substances 0.000 claims description 2
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims 2
- 230000008901 benefit Effects 0.000 abstract description 7
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 9
- 230000000844 anti-bacterial effect Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- 230000001877 deodorizing effect Effects 0.000 description 7
- 239000002612 dispersion medium Substances 0.000 description 7
- 238000009832 plasma treatment Methods 0.000 description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 6
- 230000003197 catalytic effect Effects 0.000 description 6
- 238000000354 decomposition reaction Methods 0.000 description 6
- 239000010410 layer Substances 0.000 description 6
- 239000002904 solvent Substances 0.000 description 6
- 125000000524 functional group Chemical group 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000000758 substrate Substances 0.000 description 5
- NIPNSKYNPDTRPC-UHFFFAOYSA-N N-[2-oxo-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 NIPNSKYNPDTRPC-UHFFFAOYSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 230000000840 anti-viral effect Effects 0.000 description 3
- 238000007611 bar coating method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- 239000012798 spherical particle Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- IKHGUXGNUITLKF-UHFFFAOYSA-N Acetaldehyde Chemical compound CC=O IKHGUXGNUITLKF-UHFFFAOYSA-N 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 229910001882 dioxygen Inorganic materials 0.000 description 2
- 230000001747 exhibiting effect Effects 0.000 description 2
- 239000012784 inorganic fiber Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000004528 spin coating Methods 0.000 description 2
- 239000004408 titanium dioxide Substances 0.000 description 2
- 239000002341 toxic gas Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000004332 deodorization Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000002538 fungal effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 125000002081 peroxide group Chemical group 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 208000023504 respiratory system disease Diseases 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000007751 thermal spraying Methods 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
- D06B1/00—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating
- D06B1/02—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating by spraying or projecting
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
- D06C7/00—Heating or cooling textile fabrics
-
- 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
- D06M10/00—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements
- D06M10/02—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements ultrasonic or sonic; Corona discharge
-
- 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
- D06M11/32—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
- D06M11/46—Oxides or hydroxides of elements of Groups 4 or 14 of the Periodic Table; Titanates; Zirconates; Stannates; Plumbates
-
- 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
- D06M11/47—Oxides or hydroxides of elements of Groups 5 or 15 of the Periodic Table; Vanadates; Niobates; Tantalates; Arsenates; Antimonates; Bismuthates
-
- 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
- D06M11/48—Oxides or hydroxides of chromium, molybdenum or tungsten; Chromates; Dichromates; Molybdates; Tungstates
-
- 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
- D06M11/79—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 dioxide, silicic acids or their salts
-
- 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
- D06M11/83—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 metals; with metal-generating compounds, e.g. metal carbonyls; Reduction of metal compounds on textiles
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Catalysts (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
Abstract
有機繊維を含み、前記有機繊維の一部または全部は、その表面にバリアコーティング層および光触媒コーティング層を含む光触媒機能性不織布およびこの製造方法を提供する。前記光触媒機能性不織布は、光源による光触媒活性に優れながらも、このような光反応によって有機繊維が損傷または分解されない利点を有する。Provided is a photocatalytic functional nonwoven fabric including organic fibers, and part or all of the organic fibers include a barrier coating layer and a photocatalytic coating layer on the surface thereof, and a method for producing the same. Although the said photocatalyst functional nonwoven fabric is excellent in the photocatalytic activity by a light source, it has the advantage that an organic fiber is not damaged or decomposed | disassembled by such a photoreaction.
Description
光触媒機能性不織布であって、光触媒の触媒作用によって脱臭、抗菌、抗ウイルス機能を有する不織布およびこの製造方法に関する。 The present invention relates to a non-woven fabric having a photocatalytic function, which has a deodorizing, antibacterial and antiviral function by the catalytic action of the photocatalyst and a method for producing the same.
医療用マスク、フィルターなどに用いられる一般の不織布は、細菌やガス状の物質を捕まえて濾す機能を有している。但し、このような一般の不織布の場合、細菌またはガス状の物質を自体分解する機能を有してはいない。従って、このような医療用マスク、フィルターなどに用いられる一般の不織布は、使い捨てであるか、一定期間使用した後には入れ替えなければならない。しかし、一日中マスクを使用する場合、１つの使い捨てマスクを使用することは非常に面倒であり、入れ替えなく使用する場合は体に悪影響を与え、エアコンまたは空気清浄機などに用いられるフィルターは、周期的に入れ替えないと、細菌やカビの繁殖などによる呼吸器疾患を引き起こす可能性がある。 General nonwoven fabrics used for medical masks, filters, and the like have a function of trapping and filtering bacteria and gaseous substances. However, such a general nonwoven fabric does not have a function of decomposing bacteria or gaseous substances themselves. Therefore, general nonwoven fabrics used for such medical masks and filters must be disposable or replaced after a certain period of use. However, when using a mask all day, it is very troublesome to use a single disposable mask. If it is used without replacement, it will adversely affect the body, and filters used in air conditioners or air purifiers are periodic. If it is not replaced, it may cause respiratory diseases due to bacterial and fungal reproduction.
かかる問題点に着目して、従来の様々な加工製品は、光触媒を活用して抗菌機能を発現するように製造されている。例えば、日本公開特許公報第２００７−０５１２６３号では、二酸化チタン光触媒を用いた複合材料が開示されており、韓国公開特許公報第１０−２０１２−００７３２８１号では、繊維フィルターの繊維の表面に溶射技術によって成膜された二酸化チタン被膜を含む繊維フィルターが開示されている。 Focusing on this problem, various conventional processed products are manufactured so as to exhibit an antibacterial function using a photocatalyst. For example, Japanese Laid-Open Patent Publication No. 2007-051263 discloses a composite material using a titanium dioxide photocatalyst, and Korean Published Patent Publication No. 10-2012-0073281 uses a thermal spraying technique on the surface of the fiber of a fiber filter. A fiber filter including a deposited titanium dioxide coating is disclosed.
但し、光触媒を不織布などの材料に用いるにおいて、製造過程および使用中に改善すべきである点があり、このための研究がさらに必要な実情である。 However, in the use of photocatalysts for materials such as nonwoven fabrics, there are points that should be improved during the manufacturing process and during use, and further research is required for this purpose.
本発明の一具現例は、可視光活性光触媒機能を有する不織布であって、光触媒による不織布の劣化および分解を防止することができ、光触媒を不織布に均一に分布して、長い時間優れた抗菌および脱臭機能を具現することのできる光触媒機能性不織布を提供する。 One embodiment of the present invention is a non-woven fabric having a visible light active photocatalytic function, which can prevent degradation and decomposition of the non-woven fabric by the photocatalyst, distribute the photocatalyst uniformly in the non-woven fabric, A photocatalytic functional non-woven fabric capable of realizing a deodorizing function is provided.
本発明の他の具現例は、前記光触媒機能性不織布を製造する方法であって、光触媒を不織布内に均一に分布することができ、不織布と光触媒との付着性を効果的に向上させる光触媒機能性不織布の製造方法を提供する。 Another embodiment of the present invention is a method for producing the photocatalytic functional nonwoven fabric, which can uniformly distribute the photocatalyst in the nonwoven fabric and effectively improve the adhesion between the nonwoven fabric and the photocatalyst. A method for producing a conductive nonwoven fabric is provided.
本発明の一具現例において、有機繊維を含み、前記有機繊維の一部または全部は、その表面にバリアコーティング層および光触媒コーティング層を含む光触媒機能性不織布を提供する。 In one embodiment of the present invention, a photocatalytic functional nonwoven fabric is provided that includes organic fibers, and a part or all of the organic fibers include a barrier coating layer and a photocatalytic coating layer on the surface thereof.
本発明の他の具現例において、有機繊維を含む原料不織布に酸素（Ｏ2）プラズマを処理する段階；前記有機繊維の一部または全部の表面にバリアコーティング液をコーティングしてバリアコーティング層を形成する段階；及び前記バリアコーティング層の表面に光触媒コーティング液をコーティングして光触媒コーティング層を形成する段階；を含む光触媒機能性不織布の製造方法を提供する。 In another embodiment of the present invention, a raw material nonwoven fabric containing organic fibers is treated with oxygen (O 2 ) plasma; a barrier coating layer is formed by coating a part or all of the organic fibers with a barrier coating solution. And a step of forming a photocatalyst coating layer by coating the surface of the barrier coating layer with a photocatalyst coating liquid.
前記光触媒機能性不織布は、光源による光触媒活性作用により不織布自体の劣化または分解などを防止することができ、長い時間優れた抗菌、脱臭および抗ウイルス機能を発現することができる。また、前記光触媒機能性不織布は、医療用マスク、医療用テープ基材、自動車用シート、空気清浄機およびエアコン用フィルターなど、様々な用途に活用される。 The photocatalytic functional non-woven fabric can prevent deterioration or decomposition of the non-woven fabric itself by a photocatalytic activity by a light source, and can exhibit excellent antibacterial, deodorizing and antiviral functions for a long time. Moreover, the said photocatalyst functional nonwoven fabric is utilized for various uses, such as a medical mask, a medical tape base material, a vehicle seat, an air cleaner, and an air conditioner filter.
前記光触媒機能性不織布の製造方法は、光触媒が不織布内に均一に分布されることを可能にして、これによって光触媒と不織布との付着性を向上させる利点を得ることができる。 The manufacturing method of the photocatalyst functional nonwoven fabric allows the photocatalyst to be uniformly distributed in the nonwoven fabric, thereby obtaining the advantage of improving the adhesion between the photocatalyst and the nonwoven fabric.
本発明の利点および特徴、そしてそれらを達成する方法は、後述する実施例を参照すれば明確になる。しかし、本発明は、以下に開示する実施例に限定されるものではなく、異なる多様な形態に具現されるものであって、但し、本実施例は、本発明の開示を完全にし、本発明が属する技術分野において通常の知識を有する者に発明の範疇を完全に知らせるために提供されるものであり、本発明は、請求項の範疇によって定義されるだけである。全明細書における同じ参照符号は、同じ構成要素を指す。 Advantages and features of the present invention and methods for achieving them will be apparent with reference to the examples described below. However, the present invention is not limited to the embodiments disclosed below, but may be embodied in various different forms, provided that the present embodiments completely disclose the present invention and It is provided to fully inform those skilled in the art to the scope of the invention, and the present invention is only defined by the scope of the claims. The same reference numbers in the entire specification refer to the same components.
図面において、複数の層および領域を明確に表現するため厚みを拡大して示した。また図面において、説明の便宜のため一部の層および領域の厚みを誇張して示した。 In the drawings, the thickness is enlarged to clearly show a plurality of layers and regions. In the drawings, the thickness of some layers and regions is exaggerated for convenience of explanation.
また、本明細書において、層、膜、領域、板などの部分が他の部分の「上に」または「上部に」あると言うとき、これは、他の部分の「真上に」ある場合だけでなく、その中間にさらに他の部分がある場合も含む。逆に、ある部分が他の部分の「真上に」あると言うときは、中間に他の部分がないことを意味する。また、層、膜、領域、板などの部分が他の部分の「下に」または「下部に」あると言うとき、これは、他の部分の「真下に」ある場合だけでなく、その中間にさらに他の部分がある場合も含む。逆に、ある部分が他の部分の「真下に」あると言うときは、中間に他の部分がないことを意味する。 Further, in this specification, when a part such as a layer, a film, a region, or a plate is said to be “on” or “on top” of another part, It includes not only the case where there is another part in the middle. Conversely, when a part is said to be “directly above” another part, it means that there is no other part in the middle. Also, when a part of a layer, film, region, plate, etc. is said to be “below” or “below” another part, this is not only when it is “below” another part, but in between This includes cases where there are other parts. Conversely, when a part is said to be “below” another part, it means that there is no other part in the middle.
本発明の一具現例において、有機繊維を含み、前記有機繊維の一部または全部は、その表面にバリアコーティング層および光触媒コーティング層を含む光触媒機能性不織布を提供する。 In one embodiment of the present invention, a photocatalytic functional nonwoven fabric is provided that includes organic fibers, and a part or all of the organic fibers include a barrier coating layer and a photocatalytic coating layer on the surface thereof.
前記光触媒機能性不織布は、有機繊維を含む。普通、有機繊維から構成された製品に光触媒を付与する場合、光触媒の光反応の際に有機繊維自体が劣化または分解される問題があり、このような有機繊維の代りに、劣化または分解されるリスクの少ない無機繊維を用いた。但し、無機繊維は、有機繊維に比べて加工性が良くない短所を有しており、多様な形態への変形が容易でないため活用度が低い。前記光触媒機能性不織布は、有機繊維を含んでいるにもかかわらず、光触媒による有機繊維の劣化または分解を効果的に防止し、これと共に優れた加工性かつ高い活用度を示す。 The photocatalyst functional nonwoven fabric contains organic fibers. Normally, when a photocatalyst is applied to a product composed of organic fibers, there is a problem that the organic fibers themselves deteriorate or decompose during the photoreaction of the photocatalyst. Instead of such organic fibers, the organic fibers deteriorate or decompose. Inorganic fibers with low risk were used. However, inorganic fibers have the disadvantages that the processability is not as good as that of organic fibers, and the degree of utilization is low because deformation into various forms is not easy. The photocatalyst functional nonwoven fabric effectively prevents deterioration or decomposition of the organic fiber due to the photocatalyst, although it contains organic fiber, and exhibits excellent processability and high utilization.
前記光触媒機能性不織布は、有機繊維を含み、複数の有機繊維筋が絡まって形成された基材の形態である。このとき、前記有機繊維の一部または全部は、その表面にバリアコーティング層および光触媒コーティング層を含んでいてもよい。 The photocatalytic functional nonwoven fabric is in the form of a base material that includes organic fibers and is formed by tangling a plurality of organic fiber streaks. At this time, part or all of the organic fiber may include a barrier coating layer and a photocatalytic coating layer on the surface thereof.
前記有機繊維の一部または全部とは、不織布を構成する複数の有機繊維筋のうち、一部または全部の繊維筋を意味するか、１つの有機繊維筋において表面上の一部または全部を意味する。 The part or all of the organic fibers means a part or all of the plurality of organic fibers constituting the nonwoven fabric, or a part or all of the surface of one organic fiber. To do.
例えば、前記不織布の有機繊維の表面の全体面積に比べて、約６０％〜約１００％に前記バリアコーティング層および前記光触媒コーティング層が形成されてもよく、これによって前記光触媒コーティング層の光触媒が不織布全体に均一に分散して優れた抗菌および脱臭効率を示す。 For example, the barrier coating layer and the photocatalyst coating layer may be formed in about 60% to about 100% as compared with the entire area of the surface of the organic fiber of the nonwoven fabric, whereby the photocatalyst of the photocatalyst coating layer is formed of the nonwoven fabric. Disperses uniformly throughout and exhibits excellent antibacterial and deodorizing efficiency.
前記光触媒機能性不織布は、前記有機繊維の一部または全部がその表面にバリアコーティング層および光触媒コーティング層を有することにより、光源による不織布の劣化または分解を防止することができ、光触媒が不織布内に均一に分散され、有機繊維に高い密着性をもって付着されるようにする。 The photocatalyst functional nonwoven fabric has a barrier coating layer and a photocatalyst coating layer on the surface of some or all of the organic fibers, so that the nonwoven fabric can be prevented from being deteriorated or decomposed by a light source. Disperse uniformly and adhere to organic fibers with high adhesion.
図１は、本発明の一具現例による光触媒機能性不織布の有機繊維の断面を概略的に示したものである。 FIG. 1 schematically shows a cross section of an organic fiber of a photocatalytic functional nonwoven fabric according to an embodiment of the present invention.
図１を参照すると、前記有機繊維１０は、断面が所定の直径を有するものであり、その表面にバリアコーティング層１１および光触媒コーティング層１２が順次に形成されたものであってもよい。前記バリアコーティング層１１は、前記有機繊維の表面上にコーティングされて、前記光触媒コーティング層の光触媒が前記有機繊維に固く付着するようにし、前記光触媒の光反応による有機繊維の劣化または分解を効果的に防止することができる。 Referring to FIG. 1, the organic fiber 10 may have a cross section having a predetermined diameter, and a barrier coating layer 11 and a photocatalyst coating layer 12 may be sequentially formed on the surface thereof. The barrier coating layer 11 is coated on the surface of the organic fiber so that the photocatalyst of the photocatalyst coating layer adheres firmly to the organic fiber, and effectively degrades or decomposes the organic fiber due to the photoreaction of the photocatalyst. Can be prevented.
具体的には、前記バリアコーティング層１１は、二酸化チタン（ＴｉＯ2）ゾル、シリカ（ｓｉｌｉｃａ）ゾル、及びこれらの組み合わせからなる群から選択された１つを含むバリアコーティング液から形成されてもよい。例えば、前記バリアコーティング層１１は、二酸化チタン（ＴｉＯ2）ゾルを含むバリアコーティング液から形成されてもよく、この場合、前記有機繊維との優れた密着性を示し、有機繊維の劣化または分解を防止するバリア性能に優れた長所を得ることができる。 Specifically, the barrier coating layer 11 may be formed of a barrier coating solution including one selected from the group consisting of titanium dioxide (TiO 2 ) sol, silica (solica) sol, and combinations thereof. . For example, the barrier coating layer 11 may be formed from a barrier coating solution containing titanium dioxide (TiO 2 ) sol. In this case, the barrier coating layer 11 exhibits excellent adhesion with the organic fiber, and deteriorates or decomposes the organic fiber. Advantages of excellent barrier performance can be obtained.
前記バリアコーティング液は、ゾル（ｓｏｌ）状であって、前記ゾル（ｓｏｌ）は、二酸化チタン（ＴｉＯ2）粒子またはシリカ（ｓｉｌｉｃａ）粒子のような分散質が、アルコール溶媒のような分散媒に分散されている流動性を有するコロイド溶液であってもよい。 The barrier coating liquid is in a sol form, and the sol has a dispersoid such as titanium dioxide (TiO 2 ) particles or silica particles in a dispersion medium such as an alcohol solvent. It may be a dispersed colloidal solution having fluidity.
このとき、前記バリアコーティング液は、前記二酸化チタン（ＴｉＯ2）またはシリカ（ｓｉｌｉｃａ）粒子のような分散質粒子を約１重量％〜約１０重量％含んでいてもよいし、例えば、約１．５重量％〜約５重量％含んでいてもよく、例えば、約２重量％〜約３重量％含んでいてもよい。前記バリアコーティング液が前記含量の分散質粒子を含むことにより、前記光触媒機能性不織布の製造過程において前記有機繊維の表面に均一にコーティングされる。 At this time, the barrier coating liquid may include about 1 wt% to about 10 wt% of dispersoid particles such as titanium dioxide (TiO 2 ) or silica particles. It may contain from 5 wt% to about 5 wt%, for example from about 2 wt% to about 3 wt%. When the barrier coating liquid contains the dispersoid particles in the content, the surface of the organic fiber is uniformly coated in the manufacturing process of the photocatalytic functional nonwoven fabric.
前記光触媒コーティング層１２は、バインダーおよび可視光活性光触媒粒子（Ａ）を含む光触媒コーティング液から形成される。 The photocatalyst coating layer 12 is formed from a photocatalyst coating solution containing a binder and visible light active photocatalyst particles (A).
前記バインダーは、前記可視光活性光触媒粒子（Ａ）が前記有機繊維の表面に付着しやすくするものであって、例えば、二酸化チタン（ＴｉＯ2）ゾル、シリカ（ｓｉｌｉｃａ）ゾル、及びこれらの組み合わせからなる群から選択された１つを含んでいてもよい。例えば、前記バインダーは、二酸化チタン（ＴｉＯ2）ゾルを含んでいてもよく、この場合、前記可視光活性光触媒粒子（Ａ）との混和性に優れており、前記可視光活性光触媒粒子の触媒機能を損なうことなく、前記有機繊維の表面に固く付着されるようにすることができる。 The binder facilitates adhesion of the visible light active photocatalyst particles (A) to the surface of the organic fiber, and includes, for example, titanium dioxide (TiO 2 ) sol, silica (silica) sol, and combinations thereof. One selected from the group may be included. For example, the binder may contain titanium dioxide (TiO 2 ) sol. In this case, the binder has excellent miscibility with the visible light active photocatalyst particles (A), and the catalytic function of the visible light active photocatalyst particles. It can be made to adhere firmly to the surface of the organic fiber without impairing the resistance.
例えば、前記バリアコーティング液が二酸化チタン（ＴｉＯ2）ゾルを含み、前記光触媒コーティング液のバインダーが二酸化チタン（ＴｉＯ2）ゾルを含む場合、相互密着性がさらに向上し、前記可視光活性光触媒粒子を前記有機繊維の表面上に固く位置させることができる。 For example, when the barrier coating solution contains titanium dioxide (TiO 2 ) sol and the binder of the photocatalyst coating solution contains titanium dioxide (TiO 2 ) sol, the mutual adhesion is further improved, and the visible light active photocatalyst particles are It can be firmly positioned on the surface of the organic fiber.
前記バインダーは、前記バリアコーティング液について前述したように、アルコール溶媒のような分散媒に一定含量の分散質粒子が分散された流動性を有するコロイド溶液であってもよい。 The binder may be a colloidal solution having fluidity in which a certain amount of dispersoid particles are dispersed in a dispersion medium such as an alcohol solvent, as described above for the barrier coating solution.
このとき、前記バインダーは、バインダー全体重量のうち、前記分散質粒子を約１重量％〜約１０重量％含んでいてもよいし、例えば、約１重量％〜約３重量％含んでいてもよく、例えば、約１重量％〜約２重量％含んでいてもよい。前記バインダーが前記含量の分散質粒子を含むことにより、前記光触媒機能性不織布の製造過程において、前記光触媒コーティング液をコーティングする際、前記有機繊維の表面に均一にコーティングされて、前記可視光活性光触媒粒子の分散性を高める。 At this time, the binder may contain about 1 wt% to about 10 wt% of the dispersoid particles in the total weight of the binder, for example, about 1 wt% to about 3 wt%. For example, from about 1% to about 2% by weight. When the binder contains the dispersoid particles having the content, when the photocatalyst coating liquid is coated in the production process of the photocatalyst functional nonwoven fabric, the surface of the organic fiber is uniformly coated, and the visible light active photocatalyst is formed. Increase the dispersibility of the particles.
前記光触媒コーティング液は、前記可視光活性光触媒粒子を約１重量％〜約１０重量％含んでいてもよく、例えば、約３重量％〜約７重量％含んでいてもよい。前記光触媒コーティング液は、可視光活性光触媒粒子を前記範囲の含量に含むことにより、前記光触媒機能性不織布の製造過程において前記可視光活性光触媒粒子を均一に分散させることができる。 The photocatalyst coating liquid may contain about 1 wt% to about 10 wt% of the visible light active photocatalyst particles, for example, about 3 wt% to about 7 wt%. When the photocatalyst coating liquid contains visible light active photocatalyst particles in the above range, the visible light active photocatalyst particles can be uniformly dispersed in the production process of the photocatalytic functional nonwoven fabric.
前記可視光活性光触媒粒子は、可視光領域の光を吸収して得たエネルギーから生成された電子と正孔が過酸化物アニオンまたはヒドロキシラジカルなどを生成して、これらが有害物質を分解および除去して空気清浄、脱臭または抗菌作用を行う粒子である。 In the visible light active photocatalyst particles, electrons and holes generated from energy obtained by absorbing light in the visible light region generate peroxide anions or hydroxy radicals, which decompose and remove harmful substances. It is a particle that performs air cleaning, deodorization or antibacterial action.
前記可視光活性光触媒粒子は、金属酸化物および金属粒子を含んでいてもよい。具体的には、前記可視光活性光触媒粒子は、前記金属酸化物の表面に前記金属粒子が光−蒸着（ｐｈｏｔｏ−ｄｅｐｏｓｉｔｉｏｎ）した形態であってもよい。 The visible light active photocatalyst particles may contain a metal oxide and metal particles. Specifically, the visible light active photocatalyst particles may have a form in which the metal particles are photo-deposited on the surface of the metal oxide.
前記金属酸化物は、酸化チタン、酸化タングステン、酸化亜鉛、酸化ニオビウム、及びこれらの組み合わせからなる群から選択された１つを含んでいてもよい。例えば、前記金属酸化物は、酸化タングステンを含んでいてもよく、この場合、可視光で反応して光触媒特性を示す度合いに優れており、コストが安いという長所を得ることができる。 The metal oxide may include one selected from the group consisting of titanium oxide, tungsten oxide, zinc oxide, niobium oxide, and combinations thereof. For example, the metal oxide may contain tungsten oxide. In this case, the metal oxide is excellent in the degree of reacting with visible light and exhibiting photocatalytic properties, so that the advantage of low cost can be obtained.
前記金属粒子は、可視光線に対する光活性を有する金属であって、例えば、転移金属または貴金属を含んでいてもよい。具体的には、前記可視光活性光触媒粒子の金属粒子は、タングステン、クロム、バナジウム、モリブデノ、銅、鉄、コバルト、マンガン、ニッケル、白金、金、銀、セリウム、カドミウム、亜鉛、マグネシウム、カルシウム、ストロンチウム、バリウム、及びこれらの組み合わせからなる群から選択された１つを含んでいてもよい。例えば、前記金属粒子は、白金を含んでいてもよく、この場合、一番高い光触媒性能を示すという長所を得ることができる。 The metal particle is a metal having photoactivity with respect to visible light, and may contain, for example, a transition metal or a noble metal. Specifically, the metal particles of the visible light active photocatalyst particles are tungsten, chromium, vanadium, molybdenum, copper, iron, cobalt, manganese, nickel, platinum, gold, silver, cerium, cadmium, zinc, magnesium, calcium, One selected from the group consisting of strontium, barium, and combinations thereof may be included. For example, the metal particles may contain platinum, and in this case, the advantage of exhibiting the highest photocatalytic performance can be obtained.
前記金属酸化物および金属粒子それぞれは、球状粒子であり、「球状粒子」とは、数学的に完全な球状を有する粒子を意味するものでなく、投影状が円または楕円と同一または類似の形状である粒子を意味する。前記金属酸化物および前記金属粒子がそれぞれ球状粒子であり、その結果、前記可視光活性光触媒粒子は、球状の金属酸化物粒子の表面に球状の金属粒子が蒸着した形状を有する。 Each of the metal oxide and the metal particle is a spherical particle, and the “spherical particle” does not mean a particle having a mathematically perfect sphere, and the projected shape is the same or similar to a circle or an ellipse. Means a particle. The metal oxide and the metal particles are each spherical particles. As a result, the visible light active photocatalyst particles have a shape in which spherical metal particles are deposited on the surface of the spherical metal oxide particles.
このとき、前記金属粒子の粒径（ｐａｒｔｉｃｌｅ ｄｉａｍｅｔｅｒ）は、数ナノメートル（ｎｍ）であり、例えば、約３ｎｍ〜約５ｎｍであってもよい。前記金属粒子の粒径は、前記金属酸化物の粒径に比べて非常に小さく、前記金属粒子が前記範囲の粒径を有することにより、前記金属酸化物の表面に好適な含量で光−蒸着して優れた光触媒活性を示す。 At this time, the particle diameter of the metal particles may be several nanometers (nm), for example, about 3 nm to about 5 nm. The particle size of the metal particles is very small compared to the particle size of the metal oxide, and the metal particles have a particle size in the above range, so that the metal oxide has a suitable content on the surface of the metal oxide. Excellent photocatalytic activity.
前記可視光活性光触媒粒子の粒径（ｐａｒｔｉｃｌｅ ｄｉａｍｅｔｅｒ）は、約２０ｎｍ〜約１００ｎｍであってもよく、具体的には、約３０ｎｍ〜約６０ｎｍであってもよい。前記可視光活性光触媒粒子の粒径は、ＳＥＭまたはＴＥＭ写真を測定することで導出することができる。前記可視光活性光触媒粒子の粒径が前記範囲を満たすことにより、前記有機繊維の表面に対する高い付着性を確保することができ、前記有機繊維の表面に好適な分散度を有して分散し、優れた光触媒活性を示す。 The particle diameter of the visible light active photocatalyst particles may be about 20 nm to about 100 nm, specifically about 30 nm to about 60 nm. The particle size of the visible light active photocatalyst particles can be derived by measuring SEM or TEM photographs. When the particle size of the visible light active photocatalyst particles satisfies the above range, high adhesion to the surface of the organic fiber can be ensured, and the organic fiber surface is dispersed with a suitable degree of dispersion. Excellent photocatalytic activity.
前記金属粒子の粒径が前記金属酸化物の粒径に比べて非常に小さい点を考慮すると、前記可視光活性光触媒粒子の大きさ、すなわち、前記可視光活性光触媒粒子の粒径は、主に前記金属酸化物の粒径によって決定されると理解することができる。すなわち、前記可視光活性光触媒粒子が前記範囲の粒径を有する場合、前記可視光活性光触媒粒子の金属酸化物は、前記範囲で数ナノメートル（ｎｍ）、例えば、約３ｎｍ〜約５ｎｍの誤差範囲内の粒径を有する。この場合、前記金属酸化物の表面に光−蒸着した金属粒子量が十分であり、優れた触媒活性効率を示す。また、前記可視光活性光触媒粒子が前記範囲の粒径を有することにより、有機繊維が絡まっている不織布内で前記有機繊維の間に均一に分布される。 Considering that the particle size of the metal particles is very small compared to the particle size of the metal oxide, the size of the visible light active photocatalyst particle, that is, the particle size of the visible light active photocatalyst particle is mainly It can be understood that it is determined by the particle size of the metal oxide. That is, when the visible light active photocatalyst particles have a particle size in the range, the metal oxide of the visible light active photocatalyst particles has an error range of several nanometers (nm) in the range, for example, about 3 nm to about 5 nm. Having a particle size of within. In this case, the amount of metal particles light-deposited on the surface of the metal oxide is sufficient, and exhibits excellent catalytic activity efficiency. Moreover, when the visible light active photocatalyst particles have a particle size in the above range, they are uniformly distributed between the organic fibers in the nonwoven fabric in which the organic fibers are entangled.
前記可視光活性光触媒粒子は、前記金属酸化物１００重量部に対し、前記金属粒子を約０．１〜約５重量部含んでいてもよいし、例えば、約０．１〜約２重量部含んでいてもよく、例えば、約０．１〜約０．５重量部含んでいてもよい。前記可視光活性光触媒粒子が金属粒子を前記範囲の含量に含むことにより、金属酸化物の表面に安定的に光−蒸着した金属粒子を含んでいてもよく、前記不織布内で有機繊維と固く結合することができる。また、コストに比べて優れた性能を具現することができる。 The visible light active photocatalyst particles may include about 0.1 to about 5 parts by weight of the metal particles with respect to 100 parts by weight of the metal oxide, for example, about 0.1 to about 2 parts by weight. For example, it may contain about 0.1 to about 0.5 parts by weight. When the visible light active photocatalyst particles contain metal particles in the above-mentioned range, they may contain metal particles stably photo-deposited on the surface of the metal oxide, and are firmly bonded to the organic fibers in the nonwoven fabric. can do. In addition, it is possible to realize performance superior to the cost.
前記光触媒機能性不織布は、有機繊維を含み、有機繊維であればその種類は特に制限されないが、例えば、ポリプロピレン（ＰＰ）繊維、ポリエチレンテレフタラート（ＰＥＴ）繊維、ポリエステル繊維、ポリエチレン繊維、及びこれらの組み合わせからなる群から選択された１つを含んでいてもよい。 The photocatalytic functional non-woven fabric includes organic fibers, and the type thereof is not particularly limited as long as it is organic fiber. For example, polypropylene (PP) fiber, polyethylene terephthalate (PET) fiber, polyester fiber, polyethylene fiber, and these One selected from the group consisting of combinations may be included.
例えば、前記有機繊維は、ポリプロピレン（ＰＰ）繊維またはポリエチレンテレフタラート（ＰＥＴ）繊維を含んでいてもよく、この場合、前記バリアコーティング層との付着性に優れており、加工性および汎用性の側面において有利である。 For example, the organic fiber may include polypropylene (PP) fiber or polyethylene terephthalate (PET) fiber, and in this case, the organic fiber has excellent adhesion with the barrier coating layer, and has excellent workability and versatility. Is advantageous.
前記光触媒機能性不織布は、有機繊維を含みながらも、前記有機繊維の一部または全部がその表面に前記バリアコーティング層および前記光触媒コーティング層を含むため、抗菌および脱臭性能を確保すると共に、光反応による有機繊維の損傷を効果的に防止する利点を得ることができる。 While the photocatalytic functional nonwoven fabric contains organic fibers, a part or all of the organic fibers include the barrier coating layer and the photocatalytic coating layer on the surface thereof, so that antibacterial and deodorizing performance is ensured and photoreaction is performed. It is possible to obtain an advantage of effectively preventing damage to organic fibers.
前記光触媒機能性不織布内において前記有機繊維は、連続繊維状であってもよい。「連続繊維」とは、所定の長さに切断した形状を有する繊維と対比する概念であり、製品内で連続した長さを有する繊維を意味する。前記光触媒機能性不織布は、連続繊維状の有機繊維を含むことにより、すり減りやすいか切れない強い特性を確保することができ、多様な用途に活用されて優れた長期耐久性を具現することができる。 In the photocatalyst functional nonwoven fabric, the organic fibers may be continuous fibers. “Continuous fiber” is a concept that contrasts with a fiber having a shape cut to a predetermined length, and means a fiber having a continuous length in a product. The photocatalyst functional non-woven fabric, which contains continuous organic fibers, can ensure a strong property that is easy to wear or not, and can be used for various purposes to realize excellent long-term durability. .
前記有機繊維は、断面直径が約０．５μｍ〜約１５μｍであってもよいし、例えば、約０．５μｍ〜約５μｍであってもよく、例えば、約０．５μｍ〜約２．５μｍであってもよい。すなわち、前記有機繊維の太さは前記範囲を満たす。 The organic fiber may have a cross-sectional diameter of about 0.5 μm to about 15 μm, for example, about 0.5 μm to about 5 μm, for example, about 0.5 μm to about 2.5 μm. May be. That is, the thickness of the organic fiber satisfies the above range.
例えば、前記有機繊維は、一具現例において、断面直径が約０．５μｍ〜約２μｍであってもよい。また、前記有機繊維は、他の一具現例において、断面直径が約１μｍ〜約３μｍである第１の有機繊維と断面直径が約９μｍ〜約１１μｍである第２の有機繊維とが混合した形態であってもよい。 For example, the organic fiber may have a cross-sectional diameter of about 0.5 μm to about 2 μm in one embodiment. In another embodiment, the organic fiber is a mixture of a first organic fiber having a cross-sectional diameter of about 1 μm to about 3 μm and a second organic fiber having a cross-sectional diameter of about 9 μm to about 11 μm. It may be.
前記光触媒機能性不織布が前記範囲の断面直径を有する有機繊維を含むことにより、前述した範囲の粒子の大きさを有する可視光活性光触媒粒子の分散性および付着性を向上させることができ、最終製品に適用して優れた耐久性を具現することができる。また、前記有機繊維の太さが前記範囲を満たすことにより、後述することに従って前記光触媒機能性不織布を製造する過程において、前記有機繊維の表面にバリアコーティング層および光触媒コーティング層を均一に形成することができる。 When the photocatalytic functional nonwoven fabric contains organic fibers having a cross-sectional diameter in the above range, the dispersibility and adhesion of visible light active photocatalyst particles having a particle size in the above range can be improved. It can be applied to to realize excellent durability. In addition, when the thickness of the organic fiber satisfies the above range, a barrier coating layer and a photocatalytic coating layer are uniformly formed on the surface of the organic fiber in the process of manufacturing the photocatalytic functional nonwoven fabric according to the following description. Can do.
前記光触媒機能性不織布は、可視光線領域で触媒活性を示し、これにより別途光源なしにも室内に設けられて優れた触媒活性を示す。例えば、前記光触媒機能性不織布は、約４００ｎｍ〜約８００ｎｍの可視光線領域の光によって触媒活性を示すことができ、優れた抗菌および脱臭性能を示す。 The photocatalytic functional non-woven fabric exhibits catalytic activity in the visible light region, and thus exhibits excellent catalytic activity when provided indoors without a separate light source. For example, the photocatalytic functional nonwoven fabric can exhibit catalytic activity by light in the visible light region of about 400 nm to about 800 nm, and exhibits excellent antibacterial and deodorizing performance.
前記光触媒機能性不織布は、例えば、医療用マスク、医療用バンドの基材、水処里フィルターまたはエアフィルターの用途に用いられて、長い時間入れ替えなくても優れた抗菌および抗ウイルス機能を行うことができ、向上した長期耐久性を具現することができる。 The photocatalytic functional non-woven fabric is used for, for example, a medical mask, a medical band substrate, a water treatment filter, or an air filter, and performs an excellent antibacterial and antiviral function without being replaced for a long time. And can realize improved long-term durability.
本発明の他の具現例において、有機繊維を含む原料不織布に酸素（Ｏ2）プラズマを処理する段階；前記有機繊維の一部または全部の表面にバリアコーティング液をコーティングしてバリアコーティング層を形成する段階；及び前記バリアコーティング層の表面に光触媒コーティング液をコーティングして光触媒コーティング層を形成する段階；を含む光触媒機能性不織布の製造方法を提供する。 In another embodiment of the present invention, a raw material nonwoven fabric containing organic fibers is treated with oxygen (O 2 ) plasma; a barrier coating layer is formed by coating a part or all of the organic fibers with a barrier coating solution. And a step of forming a photocatalyst coating layer by coating the surface of the barrier coating layer with a photocatalyst coating liquid.
前記光触媒機能性不織布の製造方法に従って、前記有機繊維の一部または全部の表面にバリアコーティング層および光触媒コーティング層を含む光触媒機能性不織布を製造することができ、光触媒作用による劣化および分解を効果的に防止しながら、優れた抗菌および脱臭効果を具現する不織布を製造することができる。 According to the method for producing a photocatalytic functional nonwoven fabric, a photocatalytic functional nonwoven fabric including a barrier coating layer and a photocatalytic coating layer on part or all of the surface of the organic fiber can be produced, and degradation and decomposition due to photocatalytic action are effectively performed. It is possible to produce a non-woven fabric that exhibits excellent antibacterial and deodorizing effects.
前記光触媒機能性不織布の製造方法は、有機繊維を含む原料不織布に酸素（Ｏ2）プラズマを処理する段階を含む。 Manufacturing method of the photocatalytic functional nonwoven fabric, comprising the step of processing an oxygen (O 2) plasma raw material non-woven fabric containing organic fibers.
前記原料不織布は、有機繊維を用いて予め製造された不織布であり、前記有機繊維に関する事項は、前述したとおりである。例えば、前記原料不織布は、有機繊維としてポリプロピレン（ＰＰ）繊維またはポリエチレンテレフタラート（ＰＥＴ）繊維を含んでいてもよい。 The raw material non-woven fabric is a non-woven fabric manufactured in advance using organic fibers, and the matters relating to the organic fibers are as described above. For example, the raw material nonwoven fabric may contain polypropylene (PP) fibers or polyethylene terephthalate (PET) fibers as organic fibers.
図２は、本発明の他の具現例による光触媒機能性不織布の製造方法において、一部繊維の変化を概略的に示したものである。 FIG. 2 schematically shows changes in some fibers in a method for producing a photocatalytic functional nonwoven fabric according to another embodiment of the present invention.
図２を参照すると、前記原料不織布の有機繊維は、酸素（Ｏ2）プラズマ処理によって表面が改質され、具体的には、前記酸素（Ｏ2）プラズマ処理によって前記有機繊維の表面に親水性作用基を形成することができる。 Referring to FIG. 2, the surface of the organic fiber of the raw material nonwoven fabric is modified by oxygen (O 2 ) plasma treatment. Specifically, the surface of the organic fiber is hydrophilic by the oxygen (O 2 ) plasma treatment. A functional group can be formed.
前記親水性作用基は、例えば、ヒドロキシ基、過酸化物基、カルボキシル基、及びこれらの組み合わせからなる群から選択された１つを含んでいてもよい。 The hydrophilic functional group may include, for example, one selected from the group consisting of a hydroxy group, a peroxide group, a carboxyl group, and a combination thereof.
前記原料不織布に酸素（Ｏ2）プラズマを処理して、前記有機繊維の表面に親水性作用基を付与することにより、後続してバリアコーティング層を形成するとき、前記バリアコーティング液と前記有機繊維との付着性を向上させることができる。 When the barrier coating layer is subsequently formed by treating the raw material nonwoven fabric with oxygen (O 2 ) plasma to impart a hydrophilic functional group to the surface of the organic fiber, the barrier coating liquid and the organic fiber Adhesiveness can be improved.
前記酸素（Ｏ2）プラズマが処理された原料不織布は、水に対する接触角が約２０°以下であり、例えば、約１０°〜約５°であってもよい。前記酸素（Ｏ2）プラズマ処理された原料不織布が前記範囲の接触角を有することにより、前記バリアコーティング液と前記原料不織布の有機繊維間との付着性が向上し、前記バリアコーティング液が均一にコーティングされる。 The raw material nonwoven fabric treated with the oxygen (O 2 ) plasma has a contact angle with water of about 20 ° or less, and may be, for example, about 10 ° to about 5 °. The oxygen (O 2 ) plasma-treated raw material nonwoven fabric has a contact angle in the above range, thereby improving the adhesion between the barrier coating solution and the organic fibers of the raw material nonwoven fabric, and the barrier coating solution is uniform. Coated.
前記酸素（Ｏ2）プラズマ処理は、酸素（Ｏ2）ガスの供給速度が約３０ｍＬ／ｍｉｎ〜約６０ｍＬ／ｍｉｎであってもよく、例えば、約４０ｍＬ／ｍｉｎ〜約５５ｍＬ／ｍｉｎであってもよい。前記酸素プラズマ処理の酸素ガス供給速度が前記範囲を満たす場合、有機繊維の表面に好適な量の親水性作用基が付与され、後続して製造されるバリアコーティング層が有機繊維の表面に優れた付着性およびコーティング性を示す。 The oxygen (O 2 ) plasma treatment may be performed at an oxygen (O 2 ) gas supply rate of about 30 mL / min to about 60 mL / min, for example, about 40 mL / min to about 55 mL / min. Good. When the oxygen gas supply rate of the oxygen plasma treatment satisfies the above range, a suitable amount of hydrophilic functional group is imparted to the surface of the organic fiber, and the subsequently produced barrier coating layer is excellent on the surface of the organic fiber. Shows adhesion and coating properties.
また、前記酸素（Ｏ2）プラズマ処理は、約１００Ｗ〜約２００Ｗの電力下で約 ２００秒〜約４００秒間行われる。前記酸素（Ｏ2）プラズマ処理の電力および時間が前記範囲を満たすことにより、有機繊維の損傷なく、要求される水準の親水性作用基を付与することができる。 The oxygen (O 2 ) plasma treatment is performed at a power of about 100 W to about 200 W for about 200 seconds to about 400 seconds. By satisfying the range and the power and time of the oxygen (O 2 ) plasma treatment, the required level of hydrophilic functional group can be imparted without damaging the organic fibers.
前記光触媒機能性不織布の製造方法は、前記有機繊維の一部または全部の表面にバリアコーティング液をコーティングしてバリアコーティング層を形成する段階を含む。前記バリアコーティング液に関する事項は、前述したとおりである。 The method for producing the photocatalytic functional nonwoven fabric includes a step of forming a barrier coating layer by coating a part or the whole surface of the organic fiber with a barrier coating solution. The matters regarding the barrier coating liquid are as described above.
また、前記製造方法は、前記バリアコーティング層の表面に光触媒コーティング液をコーティングして光触媒コーティング層を形成する段階を含む。前記光触媒コーティング液に関する事項は、前述したとおりである。 Further, the manufacturing method includes a step of coating the surface of the barrier coating layer with a photocatalyst coating liquid to form a photocatalyst coating layer. The matters relating to the photocatalyst coating liquid are as described above.
図２を参照すると、前記バリアコーティング層を形成する段階は、前記酸素（Ｏ2）プラズマを処理する段階に後続して行うことができ、前記酸素（Ｏ2）プラズマ処理によって改質された有機繊維の表面上に前記バリアコーティング層が形成されてもよい。 Referring to FIG. 2, the forming of the barrier coating layer, the oxygen (O 2) can be carried out following the step of treating the plasma, modified by the oxygen (O 2) plasma treatment organic The barrier coating layer may be formed on the surface of the fiber.
また、図２を参照すると、前記光触媒コーティング層を形成する段階は、前記バリアコーティング層を形成する段階に後続して行うことができ、前記バリアコーティング層の表面上に光触媒コーティング層が形成されてもよい。 Referring to FIG. 2, the step of forming the photocatalytic coating layer may be performed subsequent to the step of forming the barrier coating layer, and the photocatalytic coating layer is formed on a surface of the barrier coating layer. Also good.
従来の光触媒コーティングは、主にガラス基板やフィルム、または樹脂シートなどを含む基材の上部に行われており、スピン（ｓｐｉｎ）コーティング方法やバー（ｂａｒ）コーティング方法を用いて前記基材の上部に一種の層を形成する方法で行われた。しかし、繊維が絡まって形成された不織布基材の場合、表面の屈曲が激しくて、気孔を有しており、スピン（ｓｐｉｎ）コーティング方法やバー（ｂａｒ）コーティング方法を用いてその上部に光触媒コーティングを均一に行い難しいところがある。 Conventional photocatalytic coating is mainly performed on the upper part of a base material including a glass substrate, a film, or a resin sheet, and the upper part of the base material is formed using a spin coating method or a bar coating method. It was done by a method of forming a kind of layer. However, in the case of a nonwoven fabric substrate formed by entanglement of fibers, the surface is severely bent and has pores, and a photocatalytic coating is formed on the top using a spin coating method or a bar coating method. It is difficult to perform uniformly.
また、不織布を医療用マスクまたはフィルターなどの用途に用いる場合を考慮すると、光触媒が不織布基材の内部繊維の間に挿入される形態にコーティングされることが有利であるが、スピン（ｓｐｉｎ）コーティング方法やバー（ｂａｒ）コーティング方法を用いる場合は、このように光触媒を不織布基材の内部に均一に分布させ難い限界がある。 In consideration of the case where the nonwoven fabric is used for medical masks or filters, it is advantageous that the photocatalyst is coated in a form to be inserted between the internal fibers of the nonwoven fabric substrate. When using the method or the bar coating method, there is a limit that makes it difficult to uniformly distribute the photocatalyst in the nonwoven fabric substrate.
前記光触媒機能性不織布の製造方法において、前記バリアコーティング層は、前記バリアコーティング液をスプレー（ｓｐｒａｙ）コーティング方法で噴射することにより、前記有機繊維の一部または全部の表面にコーティングされる。前記バリアコーティング液をスプレーコーティング方法で噴射することにより、前記原料不織布の内部までバリアコーティング液が浸透し、前記有機繊維筋がそれぞれ表面にバリアコーティング層を有してもよい。 In the method for producing the photocatalytic functional nonwoven fabric, the barrier coating layer is coated on a part or all of the surface of the organic fiber by spraying the barrier coating liquid by a spray coating method. By spraying the barrier coating liquid by a spray coating method, the barrier coating liquid may penetrate into the raw material nonwoven fabric, and the organic fiber streaks may each have a barrier coating layer on the surface.
前記バリアコーティング液は、ゾル（ｓｏｌ）状であって、前記ゾル（ｓｏｌ）は、二酸化チタン（ＴｉＯ2）粒子またはシリカ（ｓｉｌｉｃａ）粒子のような分散質が、アルコール溶媒のような分散媒に分散されている流動性を有するコロイド溶液であってもよい。 The barrier coating liquid is in a sol form, and the sol has a dispersoid such as titanium dioxide (TiO 2 ) particles or silica particles in a dispersion medium such as an alcohol solvent. It may be a dispersed colloidal solution having fluidity.
このとき、前記バリアコーティング液は、前記分散質粒子を約１重量％〜約１０重量％含んでいてもよいし、例えば、約１．５重量％〜約５重量％含んでいてもよく、例えば、約２重量％〜約３重量％含んでいてもよい。前記バリアコーティング液は、前記含量の分散質粒子を含むことにより、これをスプレーコーティング方法でコーティングする際に均一に噴射し、前記有機繊維の表面に密着してコーティングされる。 At this time, the barrier coating liquid may contain about 1 wt% to about 10 wt% of the dispersoid particles, for example, about 1.5 wt% to about 5 wt%, About 2 wt% to about 3 wt%. The barrier coating liquid includes the content of the dispersoid particles, so that the barrier coating liquid is uniformly sprayed and coated in close contact with the surface of the organic fiber when it is coated by a spray coating method.
前記光触媒機能性不織布の製造方法において、前記光触媒コーティング層は、前記光触媒コーティング液をスプレー（ｓｐｒａｙ）コーティング方法で噴射することにより、前記バリアコーティング層の表面に形成される。 In the method for producing the photocatalytic functional nonwoven fabric, the photocatalyst coating layer is formed on the surface of the barrier coating layer by spraying the photocatalyst coating liquid by a spray coating method.
前記光触媒コーティング液は、バインダーおよび可視光活性光触媒粒子を含み、前記バインダーは、前述したように、アルコール溶媒のような分散媒に一定含量の分散質粒子が分散された流動性のあるコロイド溶液であってもよい。 The photocatalyst coating liquid includes a binder and visible light active photocatalyst particles. As described above, the binder is a fluid colloidal solution in which a predetermined amount of dispersoid particles are dispersed in a dispersion medium such as an alcohol solvent. There may be.
前記バインダーは、バインダー全体重量のうち、前記分散質粒子を約１重量％〜約１０重量％含んでいてもよいし、例えば、約１重量％〜約３重量％含んでいてもよく、例えば、約１重量％〜約２重量％含んでいてもよい。 The binder may contain about 1 wt% to about 10 wt% of the dispersoid particles in the total weight of the binder, such as about 1 wt% to about 3 wt%, for example, About 1% to about 2% by weight may be included.
また、前記光触媒コーティング液は、前記可視光活性光触媒粒子を約１重量％〜約１０重量％含んでいてもよく、例えば、約３重量％〜約７重量％含んでいてもよい。 In addition, the photocatalyst coating liquid may contain about 1 wt% to about 10 wt% of the visible light active photocatalyst particles, for example, about 3 wt% to about 7 wt%.
前記光触媒コーティング液は、前記バインダーおよび可視光活性光触媒粒子を含むことにより、前記光触媒コーティング液のスプレーコーティング過程において分散性およびコーティング性が向上し、その結果、前記光触媒コーティング液のスプレーコーティングにより、前記バリアコーティング層に対し、密着性の高い光触媒コーティング層が形成される。 The photocatalyst coating liquid includes the binder and visible light active photocatalyst particles, thereby improving dispersibility and coating properties in the spray coating process of the photocatalyst coating liquid. A photocatalytic coating layer having high adhesion is formed on the barrier coating layer.
前記光触媒機能性不織布の製造方法において、前記バリアコーティング液および前記光触媒コーティング液は、それぞれ分散媒を含み、前記分散媒としてはアルコール溶媒が用いられる。このとき、前記アルコール溶媒は、前記バリアコーティング層および前記光触媒コーティング層に残留する場合、光触媒性能を低下する問題を引き起こす。 In the method for producing the photocatalytic functional nonwoven fabric, each of the barrier coating liquid and the photocatalyst coating liquid contains a dispersion medium, and an alcohol solvent is used as the dispersion medium. At this time, when the alcohol solvent remains in the barrier coating layer and the photocatalyst coating layer, it causes a problem of reducing the photocatalytic performance.
これにより、前記光触媒機能性不織布の製造方法は、前記バリアコーティング層を形成する段階が前記バリアコーティング液をコーティングした後、約８０℃〜約１００℃で熱処理する段階であってもよい。また、前記光触媒コーティング層を形成する段階が前記光触媒コーティング液をコーティングした後、約８０℃〜約１００℃で熱処理する段階であってもよい。 Accordingly, in the method for producing the photocatalytic functional nonwoven fabric, the step of forming the barrier coating layer may be a step of performing a heat treatment at about 80 ° C. to about 100 ° C. after coating the barrier coating solution. In addition, the step of forming the photocatalyst coating layer may be a step of performing a heat treatment at about 80 ° C. to about 100 ° C. after coating the photocatalyst coating solution.
前記熱処理は、前記範囲の温度で乾燥過程を行うことであり、前記範囲の温度で熱処理を行うことにより、有機繊維または可視光活性光触媒粒子を損傷させずに分散媒を除去することができ、それぞれのコーティング層が固く界面に付着されるようにすることができる。その結果、前記可視光活性光触媒粒子の触媒効率を向上させることができ、前記光触媒機能性不織布の物理的強度および強い特性も確保することができる。 The heat treatment is to perform a drying process at a temperature in the range, and by performing the heat treatment at a temperature in the range, the dispersion medium can be removed without damaging the organic fibers or visible light active photocatalyst particles, Each coating layer can be made to adhere firmly to the interface. As a result, the catalyst efficiency of the visible light active photocatalyst particles can be improved, and the physical strength and strong characteristics of the photocatalytic functional nonwoven fabric can be ensured.
以下では、本発明の具体的な実施例を提示する。但し、下記に記載した実施例は、本発明を具体的に例示するか説明するためのものに過ぎず、これによって本発明が制限されてはならない。 In the following, specific examples of the present invention are presented. However, the examples described below are only intended to illustrate or explain the present invention, and the present invention should not be limited thereby.
＜実施例及び比較例＞
実施例１
ポリエチレンテレフタラート（ＰＥＴ）繊維を含む原料不織布を用意した。前記原料不織布の繊維は、断面直径が２μｍ〜４μｍであるＰＥＴ繊維および断面直径が１２μｍ〜１３μｍであるＰＥＴ繊維が混合した形態であり、前記原料不織布の厚みは１２８μｍであった。前記原料不織布に対し、１５０Ｗの電力で３６０秒の間酸素（Ｏ2）プラズマを処理した。前記酸素（Ｏ2）プラズマの酸素ガス供給速度は５０ｍＬ／ｍｉｎであった。次いで、バリアコーティング液としてイソプロピルアルコール（ＩＰＡ）９７．５重量％および二酸化チタン（ＴｉＯ2）粒子２．５重量％を含む二酸化チタン（ＴｉＯ2）ゾルを製造しており、前記バリアコーティング液をスプレーコーティング方法によって前記原料不織布に噴射して、前記ＰＥＴ繊維の表面にバリアコーティング層を形成した。前記バリアコーティング液を噴射した後、８０℃で３０分間熱処理した。次いで、酸化タングステン粒子の表面に白金ナノ粒子が光−蒸着した可視光活性光触媒粒子（Ｐｔ／ＷＯ3）５重量％および二酸化チタン（ＴｉＯ2）ゾルバインダーを含む光触媒コーティング液を製造しており、前記バインダーは、イソプロピルアルコール（ＩＰＡ）９８．７５重量％および二酸化チタン（ＴｉＯ2）粒子１．２５重量％を含むことを用いた。前記光触媒コーティング液をスプレーコーティング方法によって前記原料不織布に噴射して、前記バリアコーティング層の表面に光触媒コーティング層を形成した。前記光触媒コーティング液を噴射した後、８０℃で３０分間熱処理した。これによって、光触媒機能性不織布を製造した。
<Examples and Comparative Examples>
Example 1
A raw material nonwoven fabric containing polyethylene terephthalate (PET) fibers was prepared. The fibers of the raw material nonwoven fabric were in the form of a mixture of PET fibers having a cross-sectional diameter of 2 μm to 4 μm and PET fibers having a cross-sectional diameter of 12 μm to 13 μm, and the thickness of the raw material nonwoven fabric was 128 μm. The raw material nonwoven fabric was treated with oxygen (O 2 ) plasma at a power of 150 W for 360 seconds. The oxygen gas supply rate of the oxygen (O 2 ) plasma was 50 mL / min. Subsequently, a titanium dioxide (TiO 2 ) sol containing 97.5% by weight of isopropyl alcohol (IPA) and 2.5% by weight of titanium dioxide (TiO 2 ) particles is manufactured as a barrier coating liquid, and the barrier coating liquid is sprayed. It sprayed on the said raw material nonwoven fabric by the coating method, and the barrier coating layer was formed in the surface of the said PET fiber. After spraying the barrier coating solution, heat treatment was performed at 80 ° C. for 30 minutes. Subsequently, a photocatalytic coating liquid containing 5% by weight of visible light active photocatalyst particles (Pt / WO 3 ) in which platinum nanoparticles are photo-deposited on the surface of tungsten oxide particles and a titanium dioxide (TiO 2 ) sol binder is manufactured. The binder used was 98.75% by weight of isopropyl alcohol (IPA) and 1.25% by weight of titanium dioxide (TiO 2 ) particles. The photocatalyst coating solution was sprayed onto the raw nonwoven fabric by a spray coating method to form a photocatalyst coating layer on the surface of the barrier coating layer. After spraying the photocatalyst coating liquid, heat treatment was performed at 80 ° C. for 30 minutes. In this way, a photocatalytic functional nonwoven fabric was produced.
実施例２
前記実施例１のポリエチレンテレフタラート（ＰＥＴ）繊維を含む原料不織布の代りに、繊維の断面直径が１μｍ〜３μｍであるＰＥＴ繊維と断面直径が１０μｍであるＰＥＴ繊維とが混合しており、厚みは６０μｍであるポリエチレンテレフタラート（ＰＥＴ）原料不織布を用いたことを除いて、前記実施例１と同じ方法で光触媒機能性不織布を製造した。
Example 2
Instead of the raw material nonwoven fabric containing the polyethylene terephthalate (PET) fiber of Example 1, PET fibers having a fiber cross-sectional diameter of 1 μm to 3 μm and PET fibers having a cross-sectional diameter of 10 μm are mixed, and the thickness is A photocatalytic functional nonwoven fabric was produced in the same manner as in Example 1 except that a polyethylene terephthalate (PET) raw material nonwoven fabric having a thickness of 60 μm was used.
実施例３
前記実施例１のポリエチレンテレフタラート（ＰＥＴ）繊維を含む原料不織布の代わりに、繊維の断面直径が０．５μｍ〜２μｍであるＰＰ繊維を含み、厚みは１８０μｍであるポリプロピレン（ＰＰ）原料不織布を用いたことを除いて、前記実施例１と同じ方法で光触媒機能性不織布を製造した。
Example 3
Instead of the raw material nonwoven fabric containing polyethylene terephthalate (PET) fibers of Example 1, a polypropylene (PP) raw material nonwoven fabric containing PP fibers having a fiber cross-sectional diameter of 0.5 μm to 2 μm and a thickness of 180 μm is used. A photocatalytic functional non-woven fabric was produced in the same manner as in Example 1 except that the above was found.
比較例１−３
前記実施例１−３の原料不織布それぞれを比較例１−３とした。
Comparative Example 1-3
Each of the raw material nonwoven fabrics of Example 1-3 was referred to as Comparative Example 1-3.
＜評価＞
実験例１：有害ガス分解性能の測定
前記実施例１〜３及び前記比較例１〜３の不織布に対し、スモールチャンバ試験法（ＩＳＯ １８５６０−１：２０１４）によって有害ガス分解性能を測定した。具体的には、チャンバに不織布を位置させ、アセトアルデヒド有害ガスを０．１ｐｐｍの濃度に注入した後、光源として１０００ｌｕｘの白色ＬＥＤを用いた。その結果は、下表１に記載したとおりである。
<Evaluation>
Experimental Example 1: Measurement of noxious gas decomposition performance Noxious gas decomposition performance was measured for the nonwoven fabrics of Examples 1 to 3 and Comparative Examples 1 to 3 by a small chamber test method (ISO 18560-1: 2014). Specifically, a non-woven fabric was positioned in the chamber, acetaldehyde harmful gas was injected to a concentration of 0.1 ppm, and then a 1000 lux white LED was used as a light source. The results are as described in Table 1 below.
実験例２：可視光活性光触媒粒子の分散性の測定
前記実施例１−３の光触媒機能性不織布製造過程において、（ａ）バリアコーティング層が形成された後のＳＥＭ写真、及び（ｂ）光触媒コーティング層が形成された後のＳＥＭ写真を撮影した。その結果は、下記図３に示した。
Experimental Example 2: Measurement of Dispersibility of Visible Light Active Photocatalyst Particles In the photocatalytic functional nonwoven fabric production process of Example 1-3, (a) SEM photograph after the barrier coating layer was formed, and (b) photocatalytic coating An SEM photograph was taken after the layer was formed. The results are shown in FIG.
１０ 有機繊維
１１ バリアコーティング層
１２ 光触媒コーティング層
Ａ 可視光活性光触媒粒子
DESCRIPTION OF SYMBOLS 10 Organic fiber 11 Barrier coating layer 12 Photocatalyst coating layer A Visible light active photocatalyst particle
Claims (17)
前記有機繊維の一部または全部は、その表面にバリアコーティング層および光触媒コーティング層を含む光触媒機能性不織布。 Contains organic fibers,
A part or all of the organic fiber is a photocatalytic functional nonwoven fabric including a barrier coating layer and a photocatalytic coating layer on the surface thereof.
前記有機繊維の一部または全部の表面にバリアコーティング液をコーティングしてバリアコーティング層を形成する段階；及び、
前記バリアコーティング層の表面に光触媒コーティング液をコーティングして光触媒コーティング層を形成する段階；を含む光触媒機能性不織布の製造方法。 Treating oxygen (O 2 ) plasma on a raw material nonwoven fabric containing organic fibers;
Coating a barrier coating solution on part or all of the surface of the organic fiber to form a barrier coating layer; and
Coating the surface of the barrier coating layer with a photocatalyst coating solution to form a photocatalyst coating layer;
前記バリアコーティング液をコーティングした後、８０℃〜１００℃で熱処理する段階である、請求項１２に記載の光触媒機能性不織布の製造方法。 Forming the barrier coating layer comprises:
The method for producing a photocatalytic functional nonwoven fabric according to claim 12, which is a step of performing a heat treatment at 80 ° C to 100 ° C after coating the barrier coating solution.
前記光触媒コーティング液をコーティングした後、８０℃〜１００℃で熱処理する段階である、請求項１２に記載の光触媒機能性不織布の製造方法。 Forming the photocatalytic coating layer comprises:
The method for producing a photocatalytic functional nonwoven fabric according to claim 12, wherein the photocatalyst coating liquid is coated and then heat-treated at 80 ° C to 100 ° C.
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| PCT/KR2016/010073 WO2017047980A1 (en) | 2015-09-14 | 2016-09-08 | Photocatalyst functional nonwoven fabric, and method for producing same |
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| CN109183411A (en) * | 2018-08-20 | 2019-01-11 | 蚌埠市维光塑胶制品有限公司 | A kind of preparation method of the ventilative oil suction non-woven cloth of non-woven bag |
| US11224860B2 (en) * | 2019-02-28 | 2022-01-18 | The Hong Kong Polytechnic University | Nanofiber surfaces |
| CN111716841B (en) * | 2020-06-10 | 2022-03-29 | 南通纺织丝绸产业技术研究院 | Propylene-proof mask and preparation method thereof |
| CN112195648A (en) * | 2020-08-28 | 2021-01-08 | 无锡市宇寿医疗器械有限公司 | Photocatalytic self-cleaning non-woven fabric, preparation method and mask prepared from same |
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| JPH0388896U (en) * | 1989-12-27 | 1991-09-11 | ||
| JP3088896B2 (en) * | 1994-03-04 | 2000-09-18 | シャープ株式会社 | Radio paging receiver and radio paging method |
| WO1997000134A1 (en) * | 1995-06-19 | 1997-01-03 | Nippon Soda Co., Ltd. | Photocatalyst-carrying structure and photocatalyst coating material |
| JPH1176718A (en) * | 1997-09-11 | 1999-03-23 | Sharp Corp | Dust filter and production thereof and air conditioner and air cleaner |
| JP3088896U (en) * | 2002-03-13 | 2002-10-04 | 實慶 孫 | Fiber, organic or metal photocatalytic coating structure |
| KR200302608Y1 (en) * | 2002-10-28 | 2003-02-05 | 주식회사 엘지화학 | The Functional Wallcovering Using Photocatalyst |
| JP4560778B2 (en) * | 2004-10-04 | 2010-10-13 | 日本エクスラン工業株式会社 | Functional fiber with photocatalytic activity |
| KR101255551B1 (en) * | 2011-09-29 | 2013-04-17 | 한국생산기술연구원 | Manufacturing method of geocomposite having improved hydraulic characteristics and geocomposite manufactured thereby |
| KR101450389B1 (en) * | 2012-05-25 | 2014-10-14 | (주)엘지하우시스 | Photocatalyst, method for preparing the same and photocatalyst device |
| KR101465299B1 (en) * | 2012-05-25 | 2014-12-04 | (주)엘지하우시스 | Photocatalyst, method for preparing the same and photocatalyst device |
| KR101857831B1 (en) * | 2013-11-12 | 2018-05-15 | (주)엘지하우시스 | Visible light active photocatalyst coating composition, method for preparing visible light active photocatalyst coating composition and method for preparing visible light active photocatalyst layer |
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| KR101946383B1 (en) | 2019-02-12 |
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| JP6857173B2 (en) | 2021-04-14 |
| WO2017047980A1 (en) | 2017-03-23 |
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