JP7121113B2 - 熱可塑性樹脂組成物及びこれから製造された成形品 - Google Patents
熱可塑性樹脂組成物及びこれから製造された成形品 Download PDFInfo
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- JP7121113B2 JP7121113B2 JP2020515945A JP2020515945A JP7121113B2 JP 7121113 B2 JP7121113 B2 JP 7121113B2 JP 2020515945 A JP2020515945 A JP 2020515945A JP 2020515945 A JP2020515945 A JP 2020515945A JP 7121113 B2 JP7121113 B2 JP 7121113B2
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- thermoplastic resin
- zinc oxide
- aromatic vinyl
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- 229920005992 thermoplastic resin Polymers 0.000 title claims description 66
- 239000011342 resin composition Substances 0.000 title claims description 61
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 60
- 238000012360 testing method Methods 0.000 claims description 50
- 239000011787 zinc oxide Substances 0.000 claims description 29
- 230000000844 anti-bacterial effect Effects 0.000 claims description 28
- 239000000178 monomer Substances 0.000 claims description 22
- 229920002554 vinyl polymer Polymers 0.000 claims description 22
- 239000003365 glass fiber Substances 0.000 claims description 21
- 229920005989 resin Polymers 0.000 claims description 17
- 239000011347 resin Substances 0.000 claims description 17
- 241000894006 Bacteria Species 0.000 claims description 16
- 229920006164 aromatic vinyl copolymer Polymers 0.000 claims description 14
- 239000002245 particle Substances 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 12
- 238000012258 culturing Methods 0.000 claims description 11
- 229920006026 co-polymeric resin Polymers 0.000 claims description 10
- 238000011156 evaluation Methods 0.000 claims description 10
- 238000002441 X-ray diffraction Methods 0.000 claims description 8
- 238000002347 injection Methods 0.000 claims description 8
- 239000007924 injection Substances 0.000 claims description 8
- 241000191967 Staphylococcus aureus Species 0.000 claims description 6
- 241000588724 Escherichia coli Species 0.000 claims description 5
- 238000005424 photoluminescence Methods 0.000 claims description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 4
- 238000004458 analytical method Methods 0.000 claims description 4
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 4
- 229920000642 polymer Polymers 0.000 claims description 4
- 238000001179 sorption measurement Methods 0.000 claims description 4
- 239000013081 microcrystal Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- RNWHGQJWIACOKP-UHFFFAOYSA-N zinc;oxygen(2-) Chemical group [O-2].[Zn+2] RNWHGQJWIACOKP-UHFFFAOYSA-N 0.000 claims description 3
- 239000000088 plastic resin Substances 0.000 claims description 2
- 125000003118 aryl group Chemical group 0.000 claims 1
- 238000002845 discoloration Methods 0.000 description 7
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 6
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- 238000000465 moulding Methods 0.000 description 5
- 239000008188 pellet Substances 0.000 description 5
- 239000003242 anti bacterial agent Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 230000000704 physical effect Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- 229910001882 dioxygen Inorganic materials 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000000691 measurement method Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 3
- 239000004332 silver Substances 0.000 description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 230000000845 anti-microbial effect Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000005227 gel permeation chromatography Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- -1 pt-butylstyrene Chemical compound 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- KYPOHTVBFVELTG-OWOJBTEDSA-N (e)-but-2-enedinitrile Chemical compound N#C\C=C\C#N KYPOHTVBFVELTG-OWOJBTEDSA-N 0.000 description 1
- WAEOXIOXMKNFLQ-UHFFFAOYSA-N 1-methyl-4-prop-2-enylbenzene Chemical group CC1=CC=C(CC=C)C=C1 WAEOXIOXMKNFLQ-UHFFFAOYSA-N 0.000 description 1
- IGGDKDTUCAWDAN-UHFFFAOYSA-N 1-vinylnaphthalene Chemical compound C1=CC=C2C(C=C)=CC=CC2=C1 IGGDKDTUCAWDAN-UHFFFAOYSA-N 0.000 description 1
- CYLVUSZHVURAOY-UHFFFAOYSA-N 2,2-dibromoethenylbenzene Chemical compound BrC(Br)=CC1=CC=CC=C1 CYLVUSZHVURAOY-UHFFFAOYSA-N 0.000 description 1
- CISIJYCKDJSTMX-UHFFFAOYSA-N 2,2-dichloroethenylbenzene Chemical compound ClC(Cl)=CC1=CC=CC=C1 CISIJYCKDJSTMX-UHFFFAOYSA-N 0.000 description 1
- SBYMUDUGTIKLCR-UHFFFAOYSA-N 2-chloroethenylbenzene Chemical compound ClC=CC1=CC=CC=C1 SBYMUDUGTIKLCR-UHFFFAOYSA-N 0.000 description 1
- OYUNTGBISCIYPW-UHFFFAOYSA-N 2-chloroprop-2-enenitrile Chemical compound ClC(=C)C#N OYUNTGBISCIYPW-UHFFFAOYSA-N 0.000 description 1
- TVONJMOVBKMLOM-UHFFFAOYSA-N 2-methylidenebutanenitrile Chemical compound CCC(=C)C#N TVONJMOVBKMLOM-UHFFFAOYSA-N 0.000 description 1
- RLFXJQPKMZNLMP-UHFFFAOYSA-N 2-phenylprop-2-enenitrile Chemical compound N#CC(=C)C1=CC=CC=C1 RLFXJQPKMZNLMP-UHFFFAOYSA-N 0.000 description 1
- JLBJTVDPSNHSKJ-UHFFFAOYSA-N 4-Methylstyrene Chemical compound CC1=CC=C(C=C)C=C1 JLBJTVDPSNHSKJ-UHFFFAOYSA-N 0.000 description 1
- 244000063299 Bacillus subtilis Species 0.000 description 1
- 235000014469 Bacillus subtilis Nutrition 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 1
- GYCMBHHDWRMZGG-UHFFFAOYSA-N Methylacrylonitrile Chemical compound CC(=C)C#N GYCMBHHDWRMZGG-UHFFFAOYSA-N 0.000 description 1
- 241000589517 Pseudomonas aeruginosa Species 0.000 description 1
- 241000607142 Salmonella Species 0.000 description 1
- 241000193998 Streptococcus pneumoniae Species 0.000 description 1
- QROGIFZRVHSFLM-QHHAFSJGSA-N [(e)-prop-1-enyl]benzene Chemical compound C\C=C\C1=CC=CC=C1 QROGIFZRVHSFLM-QHHAFSJGSA-N 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 125000005907 alkyl ester group Chemical group 0.000 description 1
- XYLMUPLGERFSHI-UHFFFAOYSA-N alpha-Methylstyrene Chemical compound CC(=C)C1=CC=CC=C1 XYLMUPLGERFSHI-UHFFFAOYSA-N 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 238000012662 bulk polymerization Methods 0.000 description 1
- MPMBRWOOISTHJV-UHFFFAOYSA-N but-1-enylbenzene Chemical compound CCC=CC1=CC=CC=C1 MPMBRWOOISTHJV-UHFFFAOYSA-N 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- WSUTUEIGSOWBJO-UHFFFAOYSA-N dizinc oxygen(2-) Chemical compound [O-2].[O-2].[Zn+2].[Zn+2] WSUTUEIGSOWBJO-UHFFFAOYSA-N 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007720 emulsion polymerization reaction Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- 239000002667 nucleating agent Substances 0.000 description 1
- 238000003921 particle size analysis Methods 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920002959 polymer blend Polymers 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 229940031000 streptococcus pneumoniae Drugs 0.000 description 1
- 238000010557 suspension polymerization reaction Methods 0.000 description 1
- 238000002076 thermal analysis method Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G9/00—Compounds of zinc
- C01G9/02—Oxides; Hydroxides
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G9/00—Compounds of zinc
- C01G9/02—Oxides; Hydroxides
- C01G9/03—Processes of production using dry methods, e.g. vapour phase processes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
- C08J5/0405—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres
- C08J5/043—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres with glass fibres
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/14—Glass
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0018—Indoor units, e.g. fan coil units characterised by fans
- F24F1/0025—Cross-flow or tangential fans
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/60—Compounds characterised by their crystallite size
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/70—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data
- C01P2002/72—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data by d-values or two theta-values, e.g. as X-ray diagram
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- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
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- C01P2002/74—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data by peak-intensities or a ratio thereof only
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- C01P2004/10—Particle morphology extending in one dimension, e.g. needle-like
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- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
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- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
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- C01P2004/32—Spheres
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- C01—INORGANIC CHEMISTRY
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- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
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- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/62—Submicrometer sized, i.e. from 0.1-1 micrometer
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- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/12—Surface area
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- C01—INORGANIC CHEMISTRY
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- C01P2006/80—Compositional purity
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
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- C08K2201/003—Additives being defined by their diameter
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08K2201/002—Physical properties
- C08K2201/005—Additives being defined by their particle size in general
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L25/00—Compositions of, homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Compositions of derivatives of such polymers
- C08L25/02—Homopolymers or copolymers of hydrocarbons
- C08L25/04—Homopolymers or copolymers of styrene
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- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Description
以下では、本発明を詳細に説明する。
本発明の一具体例に係る芳香族ビニル系共重合体樹脂は、通常のエアコンのクロスフローファン用熱可塑性樹脂組成物に使用される芳香族ビニル系共重合体樹脂であってもよい。例えば、前記芳香族ビニル系共重合体樹脂は、芳香族ビニル系単量体、及びシアン化ビニル系単量体などの前記芳香族ビニル系単量体と共重合可能な単量体を含む単量体混合物の重合体であってもよい。
本発明の一具体例に係るガラス繊維は、熱可塑性樹脂組成物の剛性などの機械的物性などを向上できるものであって、通常のエアコンのクロスフローファン用熱可塑性樹脂組成物に使用されるガラス繊維であってもよい。
本発明の一具体例に係る酸化亜鉛は、熱可塑性樹脂組成物の耐候性、抗菌性などを向上できるものであって、フォトルミネッセンス(Photo Luminescence)の測定時、370nm~390nm領域のピークAと450nm~600nm領域のピークBとの大きさの比(B/A)が約0.01~約1.0、例えば、約0.1~約1.0、具体的には約0.2~約0.7であってもよい。前記酸化亜鉛のピークA及びピークBの大きさの比(B/A)が約0.01未満である場合は、抗菌性などが低下するおそれがあり、約1.0を超える場合は、熱可塑性樹脂の初期変色の問題が発生し、耐候性が低下し得る。
以下、実施例及び比較例で使用された各成分の仕様を説明する。
(A-1)スチレン68重量%及びアクリロニトリル32重量%が重合されたSAN樹脂(重量平均分子量:80,000g/mol)を使用した。
断面直径が13μmであり、加工前の長さが3mmである円形断面ガラス繊維を使用した。
(C1)金属形態の亜鉛を溶かした後、900℃に加熱して蒸気化させた後、酸素ガスを注入し、常温(25℃)に冷却することによって1次中間物を得た。次に、その1次中間物を700℃で90分間熱処理した後、常温(25℃)に冷却することによって製造した酸化亜鉛を使用した。製造された酸化亜鉛の平均粒径、BET表面積、純度、フォトルミネッセンス(Photo Luminescence)の測定時、370nm~390nm領域のピークAと450nm~600nm領域のピークBとの大きさの比(B/A)、及び微小結晶の大きさ(crystallite size)の値を測定し、その結果を下記の表1に示した。
銀(Ag)系抗菌剤(メーカー:東亜合成株式会社、製品名:NOVARON AGZ010)を使用した。
(1)平均粒径(単位:μm):ベックマン・コールター株式会社のレーザー回折式粒度分布測定装置(Laser Diffraction Particle Size Analyzer LS I3 320装置)を用いて平均粒径(体積平均)を測定した。
前記各構成成分を下記の表2に記載した含有量で添加した後、230℃で押出しを行うことによってペレットを製造した。押出しは、L/D=36、直径45mmの二軸押出機を用いて行い、製造されたペレットは80℃で2時間以上乾燥した後、6Oz射出機(成形温度:230℃、金型温度:60℃)で射出することによって試験片を製造した。製造された試験片に対して下記の方法で物性を評価し、その結果を下記の表2に示した。
(1)耐候性評価(色相変化(ΔE)):50mm×90mm×3mmの大きさの射出試験片に対して色差計(コニカミノルタ株式会社のCM-3700A)を用いて初期色相(L0 *、a0 *、b0 *)を測定し、ASTM D4459に基づいて3,000時間試験した後で同一の方法で色相(L1 *、a1 *、b1 *)を測定し、下記の式2によって色相変化(ΔE)を算出した。
前記表2の結果から、本発明の熱可塑性樹脂組成物は、剛性(曲げ弾性率)、抗菌性(抗菌活性値)、耐候性(色相変化(ΔE))、耐熱性(熱変形温度)、外観特性(フローマーク、クリープ評価)などの全てに優れることが分かる。
Claims (10)
- 変性芳香族ビニル系共重合体樹脂;
ガラス繊維;及び
酸化亜鉛;を含み、
前記酸化亜鉛は、粒度分析装置で測定した平均粒径(D50)が0.5μm~3μmであり、フォトルミネッセンス(Photo Luminescence)の測定時、370nm~390nm領域のピークAと450nm~600nm領域のピークBとの大きさの比(B/A)が0.01~1.0であり、
前記酸化亜鉛は、X線回折(X-ray diffraction、XRD)の分析時、ピーク位置2θ値が35゜~37゜の範囲であり、下記の式1による微小結晶の大きさが1,000Å~2,000Åであることを特徴とする、熱可塑性樹脂組成物:
前記式1において、Kは形状係数であり、λはX線波長であり、βはX線回折ピークのFWHM値であり、θはピーク位置の値である。 - 前記熱可塑性樹脂組成物は、前記芳香族ビニル系共重合体樹脂100重量部;前記ガラス繊維5重量部~40重量部;及び前記酸化亜鉛0.1重量部~20重量部;を含むことを特徴とする、請求項1に記載の熱可塑性樹脂組成物。
- 前記芳香族ビニル系共重合体樹脂は、芳香族ビニル系単量体及び前記芳香族ビニル系単量体と共重合可能な単量体の重合体であることを特徴とする、請求項1または2に記載の熱可塑性樹脂組成物。
- 前記酸化亜鉛は、窒素ガス吸着法を用いて、BET分析装置で測定した比表面積BETが10m 2 /g以下であることを特徴とする、請求項1~3のいずれか1項に記載の熱可塑性樹脂組成物。
- 前記熱可塑性樹脂組成物は、ASTM D790に基づいて、2.8mm/minの条件で6.4mm厚の試験片に対して測定した曲げ弾性率が74,000kgf/cm 2 以上であることを特徴とする、請求項1~6のいずれか1項に記載の熱可塑性樹脂組成物。
- 前記熱可塑性樹脂組成物は、芳香族ビニル系共重合体樹脂の連続相にガラス繊維及び酸化亜鉛が分散相を形成し、前記酸化亜鉛の平均粒径(D50)と前記ガラス繊維の直径との比が1:1.7~1:200であることを特徴とする、請求項1~7のいずれか1項に記載の熱可塑性樹脂組成物。
- 請求項1~8のいずれか1項に記載の熱可塑性樹脂組成物から形成されることを特徴とする成形品。
- 前記成形品は、エアコンのクロスフローファンであることを特徴とする、請求項9に記載の成形品。
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