JPWO2017010459A1 - 生物付着抑制塗料及びその製造方法、ならびに生物付着抑制塗膜 - Google Patents
生物付着抑制塗料及びその製造方法、ならびに生物付着抑制塗膜 Download PDFInfo
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- JPWO2017010459A1 JPWO2017010459A1 JP2016560939A JP2016560939A JPWO2017010459A1 JP WO2017010459 A1 JPWO2017010459 A1 JP WO2017010459A1 JP 2016560939 A JP2016560939 A JP 2016560939A JP 2016560939 A JP2016560939 A JP 2016560939A JP WO2017010459 A1 JPWO2017010459 A1 JP WO2017010459A1
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- Prior art keywords
- composite gel
- pva
- hydroxyl group
- silica
- paint
- 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.)
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- 239000011248 coating agent Substances 0.000 title claims description 20
- 238000000576 coating method Methods 0.000 title claims description 20
- 239000003973 paint Substances 0.000 title description 34
- 239000002131 composite material Substances 0.000 claims abstract description 103
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims abstract description 36
- 239000000843 powder Substances 0.000 claims abstract description 28
- 150000002484 inorganic compounds Chemical class 0.000 claims abstract description 15
- 229910010272 inorganic material Inorganic materials 0.000 claims abstract description 15
- 229920000620 organic polymer Polymers 0.000 claims abstract description 12
- 229910052809 inorganic oxide Inorganic materials 0.000 claims abstract description 11
- 239000002994 raw material Substances 0.000 claims abstract description 11
- 239000000203 mixture Substances 0.000 claims abstract description 10
- 238000001035 drying Methods 0.000 claims abstract description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 112
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 88
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 88
- 239000000377 silicon dioxide Substances 0.000 claims description 48
- 150000001875 compounds Chemical class 0.000 claims description 11
- 238000006116 polymerization reaction Methods 0.000 claims description 10
- 238000007127 saponification reaction Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 9
- 235000014413 iron hydroxide Nutrition 0.000 claims description 8
- NCNCGGDMXMBVIA-UHFFFAOYSA-L iron(ii) hydroxide Chemical compound [OH-].[OH-].[Fe+2] NCNCGGDMXMBVIA-UHFFFAOYSA-L 0.000 claims description 8
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims description 8
- 239000000347 magnesium hydroxide Substances 0.000 claims description 8
- 229910001862 magnesium hydroxide Inorganic materials 0.000 claims description 8
- 150000003377 silicon compounds Chemical class 0.000 claims description 8
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 6
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 6
- 239000002202 Polyethylene glycol Substances 0.000 claims description 5
- 229920001223 polyethylene glycol Polymers 0.000 claims description 5
- 239000000395 magnesium oxide Substances 0.000 claims description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 3
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 3
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 3
- 239000000499 gel Substances 0.000 description 82
- 229910002027 silica gel Inorganic materials 0.000 description 11
- 239000000741 silica gel Substances 0.000 description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 150000003839 salts Chemical class 0.000 description 8
- 239000002002 slurry Substances 0.000 description 8
- 229940093429 polyethylene glycol 6000 Drugs 0.000 description 7
- 239000000126 substance Substances 0.000 description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- 239000007864 aqueous solution Substances 0.000 description 6
- 229910052802 copper Inorganic materials 0.000 description 6
- 239000010949 copper Substances 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 229920002584 Polyethylene Glycol 6000 Polymers 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 238000003756 stirring Methods 0.000 description 5
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 4
- 230000007227 biological adhesion Effects 0.000 description 4
- -1 ethylene, propylene, n-butene Chemical class 0.000 description 4
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
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- NJYFRQQXXXRJHK-UHFFFAOYSA-N (4-aminophenyl) thiocyanate Chemical compound NC1=CC=C(SC#N)C=C1 NJYFRQQXXXRJHK-UHFFFAOYSA-N 0.000 description 2
- UZKWTJUDCOPSNM-UHFFFAOYSA-N 1-ethenoxybutane Chemical compound CCCCOC=C UZKWTJUDCOPSNM-UHFFFAOYSA-N 0.000 description 2
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- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 235000010724 Wisteria floribunda Nutrition 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000003373 anti-fouling effect Effects 0.000 description 2
- 239000012867 bioactive agent Substances 0.000 description 2
- 239000008119 colloidal silica Substances 0.000 description 2
- BERDEBHAJNAUOM-UHFFFAOYSA-N copper(I) oxide Inorganic materials [Cu]O[Cu] BERDEBHAJNAUOM-UHFFFAOYSA-N 0.000 description 2
- KRFJLUBVMFXRPN-UHFFFAOYSA-N cuprous oxide Chemical compound [O-2].[Cu+].[Cu+] KRFJLUBVMFXRPN-UHFFFAOYSA-N 0.000 description 2
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- 238000010828 elution Methods 0.000 description 2
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- LAYAKLSFVAPMEL-UHFFFAOYSA-N 1-ethenoxydodecane Chemical compound CCCCCCCCCCCCOC=C LAYAKLSFVAPMEL-UHFFFAOYSA-N 0.000 description 1
- QJJDJWUCRAPCOL-UHFFFAOYSA-N 1-ethenoxyoctadecane Chemical compound CCCCCCCCCCCCCCCCCCOC=C QJJDJWUCRAPCOL-UHFFFAOYSA-N 0.000 description 1
- OVGRCEFMXPHEBL-UHFFFAOYSA-N 1-ethenoxypropane Chemical compound CCCOC=C OVGRCEFMXPHEBL-UHFFFAOYSA-N 0.000 description 1
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- JAHNSTQSQJOJLO-UHFFFAOYSA-N 2-(3-fluorophenyl)-1h-imidazole Chemical compound FC1=CC=CC(C=2NC=CN=2)=C1 JAHNSTQSQJOJLO-UHFFFAOYSA-N 0.000 description 1
- OEPOKWHJYJXUGD-UHFFFAOYSA-N 2-(3-phenylmethoxyphenyl)-1,3-thiazole-4-carbaldehyde Chemical compound O=CC1=CSC(C=2C=C(OCC=3C=CC=CC=3)C=CC=2)=N1 OEPOKWHJYJXUGD-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
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- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 description 1
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- OSDWBNJEKMUWAV-UHFFFAOYSA-N Allyl chloride Chemical compound ClCC=C OSDWBNJEKMUWAV-UHFFFAOYSA-N 0.000 description 1
- 241001474374 Blennius Species 0.000 description 1
- ZOGOAQIOIFZBQI-UHFFFAOYSA-N C(C)(=O)OC(CC)(OC=C)OC(C)=O Chemical compound C(C)(=O)OC(CC)(OC=C)OC(C)=O ZOGOAQIOIFZBQI-UHFFFAOYSA-N 0.000 description 1
- 239000005749 Copper compound Substances 0.000 description 1
- 241000195493 Cryptophyta Species 0.000 description 1
- VQTUBCCKSQIDNK-UHFFFAOYSA-N Isobutene Chemical group CC(C)=C VQTUBCCKSQIDNK-UHFFFAOYSA-N 0.000 description 1
- HETCEOQFVDFGSY-UHFFFAOYSA-N Isopropenyl acetate Chemical compound CC(=C)OC(C)=O HETCEOQFVDFGSY-UHFFFAOYSA-N 0.000 description 1
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- 241000237536 Mytilus edulis Species 0.000 description 1
- CNCOEDDPFOAUMB-UHFFFAOYSA-N N-Methylolacrylamide Chemical compound OCNC(=O)C=C CNCOEDDPFOAUMB-UHFFFAOYSA-N 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 150000003926 acrylamides Chemical class 0.000 description 1
- FWZUNOYOVVKUNF-UHFFFAOYSA-N allyl acetate Chemical group CC(=O)OCC=C FWZUNOYOVVKUNF-UHFFFAOYSA-N 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 230000004071 biological effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 150000001880 copper compounds Chemical class 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 150000001991 dicarboxylic acids Chemical class 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- NKSJNEHGWDZZQF-UHFFFAOYSA-N ethenyl(trimethoxy)silane Chemical compound CO[Si](OC)(OC)C=C NKSJNEHGWDZZQF-UHFFFAOYSA-N 0.000 description 1
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- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
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- 238000001879 gelation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 239000002075 main ingredient Substances 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
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- YLGYACDQVQQZSW-UHFFFAOYSA-N n,n-dimethylprop-2-enamide Chemical compound CN(C)C(=O)C=C YLGYACDQVQQZSW-UHFFFAOYSA-N 0.000 description 1
- OMNKZBIFPJNNIO-UHFFFAOYSA-N n-(2-methyl-4-oxopentan-2-yl)prop-2-enamide Chemical compound CC(=O)CC(C)(C)NC(=O)C=C OMNKZBIFPJNNIO-UHFFFAOYSA-N 0.000 description 1
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- 150000002825 nitriles Chemical class 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
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- C—CHEMISTRY; METALLURGY
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- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
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- C09D5/1612—Non-macromolecular compounds
- C09D5/1618—Non-macromolecular compounds inorganic
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- C—CHEMISTRY; METALLURGY
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- C08J3/00—Processes of treating or compounding macromolecular substances
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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
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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
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- C08J3/02—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques
- C08J3/03—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media
- C08J3/075—Macromolecular gels
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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
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/12—Powdering or granulating
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L101/00—Compositions of unspecified macromolecular compounds
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- C08L101/06—Compositions of unspecified macromolecular compounds characterised by the presence of specified groups, e.g. terminal or pendant functional groups containing oxygen atoms
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08L71/00—Compositions of polyethers obtained by reactions forming an ether link in the main chain; Compositions of derivatives of such polymers
- C08L71/02—Polyalkylene oxides
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- C09D129/00—Coating compositions based on 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 alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Coating compositions based on hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Coating compositions based on derivatives of such polymers
- C09D129/02—Homopolymers or copolymers of unsaturated alcohols
- C09D129/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
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- C09D201/00—Coating compositions based on unspecified macromolecular compounds
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Abstract
Description
また、本開示の一局面の塗料は、上述の複合ゲルを含有する塗料である。
また、本開示の一局面の複合ゲルの製造方法は、水酸基含有有機高分子化合物と水酸基含有無機化合物、及び無機酸化物のうちの少なくとも一方と、を主成分として含む原料組成物をゲル化させる第一工程と、前記第一工程で得られた生成物を乾燥してから、解砕することにより複合ゲルの微粉体を得る第二工程とを含む。
以下に説明する実施形態においては、別に記載しない限り、以下の材料を用いる。ポリビニルアルコール(以下、PVAと略称する。)としては、クラレ株式会社製のPVA−217を用いる。なお、他のPVAを用いることもでき、例えば、クラレ株式会社製のPVA−105、PVA−117、PVA−205、PVA‐417、PVA‐420H及びPVA‐424Hなどが好適である。ポリエチレングリコール(以下、PEGと略称する。)としては、ポリエチレングリコール6000を用いる。水酸基含有ケイ素化合物としては、シリカゲルを用いる。シリカゲルとしては、サイリシア(登録商標)(グレード:350)(富士シリシア化学株式会社製)を用いる。なお、他のシリカゲルを用いることもでき、例えば、サイリシア(登録商標)(グレード:430)などが好適である。
[1−1.PVAと水酸基含有無機物との複合化]
PVAと水酸基含有無機物との複合化は、以下のように行った。
先に調製した複合ゲルの水中での安定性を把握するために、溶解度試験を下記のように行った。PVA、シリカ/PVA複合ゲル、水酸化マグネシウム/PVA複合ゲル、及び水酸化鉄/PVA複合ゲル、各5gを150メッシュ(目開き100μm。)のステンレス金網製容器に量り取り、イオン交換水100mL中に浸漬した。イオン交換水はマグネチックスターラーにて撹拌し、所定時間経過した後、上澄み溶液の一部を回収した。回収した上澄み溶液は110℃乾燥機内に入れ、固形分残量から複合ゲルから溶出してくるPVA量(もしくはPVAと水酸化物を合わせた量)を評価した。表1に複合ゲルの溶解度試験結果を示す。
[2−1.複合ゲルの製造方法]
PVA5gを水95gに溶解後、このPVA水溶液にシリカゲル10gを添加した。分散機にて、4000rpm、10分間攪拌することにより、スラリーを調製した。このスラリーを、冷凍庫内に入れて凍結後、冷凍庫内から取り出して自然融解し、再び冷凍庫内に入れて凍結処理を行った。本工程を複数回(例えば2回以上)繰り返したところ、室温下でもゲル化状態を維持するに至り、シリカ/PVA複合ゲルを作製することができた。
上記シリカ/PVA複合ゲルを、宮崎県日向沖で1か月間、及び岡山県玉野港で3か月間海水中に浸漬し、海洋に棲息する生物の付着状況を観察した。シリカ/PVA複合ゲルには、海洋生物の付着が見られなかったことから、生物の付着を防止する能力を有することが確認できた。
[3−1.塗料の製造方法]
PVA5gを水95gに溶解後、このPVA水溶液にシリカゲル10gを添加した。分散機にて、4000rpm、10分間攪拌することにより、スラリーを調製した。このスラリーを、110℃乾燥機にて12時間以上乾燥させた。乾燥物を微粉化することで、平均粒径3.4μmのシリカ/PVA複合ゲル微粉体を調製した。
シリカ/PVA複合ゲル微粉体を添加した塗料と、シリカ/PVA複合ゲル微粉体無添加の塗料を、強化プラスチック(FRP)の板に塗布した。このFRP板を岡山県玉野港で14か月間、海水中に浸漬し、海洋に棲息する生物の付着状況を観察した。
[4−1.塗料の製造方法]
PVA5質量%水溶液100gに、シリカゲルを5g添加した。分散機にて、4000rpm、10分間攪拌することにより、スラリーを調製し、シリカ/PVA複合ゲルを作成した。
この微粉体を、二液タイプのウレタン塗料の主剤100重量部に対し、10重量部添加した。分散機にて、4000rpm、10分間攪拌することにより、船底塗料の主剤を調製した。使用直前に硬化剤を添加し、船底塗料として用いた。
シリカ/PVA複合ゲル微粉体を添加した塗料と、シリカ/PVA複合ゲル微粉体無添加の塗料を、プレジャーボートの船底に塗布した。このプレジャーボートの船底を岡山県玉野港で生物活性が高い6月末〜9月末の3か月間、海水中に浸漬し、海洋に棲息する生物の付着状況を観察した。
[5−1.塗料の製造方法]
PVA5質量%水溶液100gにシリカゲルを5g添加した。分散機にて4000rpm、10分間撹拌することにより、スラリーを調製し、シリカ/PVA複合ゲルを作製した。PVAとしては、ケン化度70モル%、粘度平均重合度700のPVA、PVA−417(ケン化度80モル%、粘度平均重合度1700、株式会社クラレ製)、PVA−420H(ケン化度80モル%、粘度平均重合度2000、株式会社クラレ製)、PVA−424H(ケン化度80モル%、粘度平均重合度2400、株式会社クラレ製)を用いた。シリカゲルとしては、富士シリシア化学株式会社製のサイリシア350を用いて作成した。
この微粉体を加水分解性塗料100重量部に対し、10重量部添加して船底塗料を作成した。
シリカ/PVA複合ゲル微粉体を添加した加水分解性塗料と、シリカ/PVA複合ゲル微粉体無添加の加水分解性塗料を、強化プラスチック(FRP)の板に塗布し、岡山県玉野港で約2か月海中に浸漬し、海洋に生息する生物の付着状況を観察した。
(6)第6実施形態
[6−1.複合ゲルの製造方法]
ケイ酸ナトリウム水溶液と希硫酸を用いて、シリカ濃度20質量%のシリカゾルを調製した。得られたシリカゾル550gにPVA5質量%水溶液650gを添加し、十分混合を行ったのち、常温に静置することで、複合ヒドロゲルを調製した。PVAとしては、ケン化度70モル%、粘度平均重合度700のPVA、及びPVA−420H(ケン化度80モル%、粘度平均重合度2000、株式会社クラレ製)を用いた。得られた複合ヒドロゲルを水洗・乾燥・粉砕工程を経ることにより、シリカ/PVA複合ゲル微粉体を得た。複合ゲルに含まれるPVA含有率は、元素分析計で測定された炭素含有率をもとに、以下の数式1によって求めた。
PVA含有率(%)=複合ゲル炭素含有率(%)×{100/PVA炭素含有率(%)}
シリカ/PVA複合ゲル微粉体のPVA含有率(仕込み値:23質量%)は、ケン化度70モル%、粘度平均重合度700のPVAを用いた場合は16.5質量%(仕込み値比で72%)であった。また、PVA−420Hを用いた場合、シリカ/PVA複合ゲル微粉体のPVA含有率は18.5質量%(仕込み値比で80%)であった。このようなシリカ/PVA複合ゲル微粉体を利用した場合でも、所期の船底塗料を得ることができる。
以上、本開示の実施形態について説明したが、本開示は上記の具体的な一実施形態に限定されず、この他にも種々の形態で実施することができる。
また、本開示の一局面の生物付着抑制塗料の製造方法は、複合ゲルを有する生物付着抑制塗料(生理活性剤を含むものを除く。)の製造方法であって、ポリビニルアルコールと、水酸基含有無機化合物、及び無機酸化物のうちの少なくとも一方と、を含む原料組成物をゲル化させる第一工程と、前記第一工程で得られた生成物を乾燥してから、解砕することにより複合ゲルの微粉体を得る第二工程とを含む。
Claims (10)
- 水酸基含有有機高分子化合物と、水酸基含有無機化合物及び無機酸化物のうちの少なくとも一方と、を主成分として含む原料組成物をゲル化させることによって構成される複合ゲル。
- 前記水酸基含有有機高分子化合物は、ポリビニルアルコール、及びポリエチレングリコールの中から選ばれる1種又は2種である
請求項1に記載の複合ゲル。 - 前記ポリビニルアルコールは、粘度平均重合度350〜3500、及びケン化度50〜100モル%である
請求項1又は請求項2に記載の複合ゲル。 - 前記ポリエチレングリコールは、数平均分子量1000〜25000である
請求項1〜請求項3のいずれか一項に記載の複合ゲル。 - 前記水酸基含有無機化合物は、水酸基含有ケイ素化合物、水酸化アルミニウム、水酸化マグネシウム、及び水酸化鉄の中から選ばれる1種又は2種以上である
請求項1〜請求項4のいずれか一項に記載の複合ゲル。 - 前記水酸基含有ケイ素化合物は、シリカである
請求項1〜請求項5のいずれか一項に記載の複合ゲル。 - 前記無機酸化物は、酸化アルミニウム、酸化マグネシウム、及び酸化鉄の中から選ばれる1種又は2種以上である
請求項1〜請求項6のいずれか一項に記載の複合ゲル。 - 請求項1〜請求項7のいずれか一項に記載の複合ゲルを含有する塗料。
- 請求項1〜請求項7のいずれか一項に記載の複合ゲル又は当該複合ゲルを含有する塗料のいずれかを塗工することにより得られる塗膜。
- 水酸基含有有機高分子化合物と、水酸基含有無機化合物、及び無機酸化物のうちの少なくとも一方と、を主成分として含む原料組成物をゲル化させる第一工程と、
前記第一工程で得られた生成物を乾燥してから、解砕することにより複合ゲルの微粉体を得る第二工程とを
含む複合ゲルの製造方法。
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KR20180029049A (ko) | 2018-03-19 |
EP3323857B8 (en) | 2023-08-02 |
CN107849366A (zh) | 2018-03-27 |
EP3323857B1 (en) | 2023-06-28 |
WO2017010459A1 (ja) | 2017-01-19 |
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