JP2010083063A - Corrosionproof layer structure and corrosion protecting method - Google Patents
Corrosionproof layer structure and corrosion protecting method Download PDFInfo
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- JP2010083063A JP2010083063A JP2008256124A JP2008256124A JP2010083063A JP 2010083063 A JP2010083063 A JP 2010083063A JP 2008256124 A JP2008256124 A JP 2008256124A JP 2008256124 A JP2008256124 A JP 2008256124A JP 2010083063 A JP2010083063 A JP 2010083063A
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- 238000005260 corrosion Methods 0.000 title claims abstract description 8
- 230000007797 corrosion Effects 0.000 title abstract description 5
- 239000003822 epoxy resin Substances 0.000 claims abstract description 45
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 45
- 229920005989 resin Polymers 0.000 claims abstract description 44
- 239000011347 resin Substances 0.000 claims abstract description 44
- 239000000203 mixture Substances 0.000 claims abstract description 36
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- 150000001412 amines Chemical class 0.000 claims abstract description 8
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- -1 isocyanate compound Chemical class 0.000 description 9
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- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 8
- 239000003795 chemical substances by application Substances 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 8
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid group Chemical group S(O)(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 8
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 description 7
- 238000010276 construction Methods 0.000 description 7
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- 150000002513 isocyanates Chemical class 0.000 description 6
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- 125000003118 aryl group Chemical group 0.000 description 5
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 description 5
- 229920000570 polyether Polymers 0.000 description 5
- 229920001228 polyisocyanate Polymers 0.000 description 5
- 239000005056 polyisocyanate Substances 0.000 description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- 125000003277 amino group Chemical group 0.000 description 4
- PXKLMJQFEQBVLD-UHFFFAOYSA-N bisphenol F Chemical compound C1=CC(O)=CC=C1CC1=CC=C(O)C=C1 PXKLMJQFEQBVLD-UHFFFAOYSA-N 0.000 description 4
- 230000008602 contraction Effects 0.000 description 4
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 4
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- 239000011398 Portland cement Substances 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 3
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- 229930185605 Bisphenol Natural products 0.000 description 2
- IRIAEXORFWYRCZ-UHFFFAOYSA-N Butylbenzyl phthalate Chemical compound CCCCOC(=O)C1=CC=CC=C1C(=O)OCC1=CC=CC=C1 IRIAEXORFWYRCZ-UHFFFAOYSA-N 0.000 description 2
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 description 2
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- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 2
- 235000004443 Ricinus communis Nutrition 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 125000001931 aliphatic group Chemical group 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
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- RUELTTOHQODFPA-UHFFFAOYSA-N toluene 2,6-diisocyanate Chemical compound CC1=C(N=C=O)C=CC=C1N=C=O RUELTTOHQODFPA-UHFFFAOYSA-N 0.000 description 2
- NNOZGCICXAYKLW-UHFFFAOYSA-N 1,2-bis(2-isocyanatopropan-2-yl)benzene Chemical compound O=C=NC(C)(C)C1=CC=CC=C1C(C)(C)N=C=O NNOZGCICXAYKLW-UHFFFAOYSA-N 0.000 description 1
- FKTHNVSLHLHISI-UHFFFAOYSA-N 1,2-bis(isocyanatomethyl)benzene Chemical compound O=C=NCC1=CC=CC=C1CN=C=O FKTHNVSLHLHISI-UHFFFAOYSA-N 0.000 description 1
- KCZQSKKNAGZQSZ-UHFFFAOYSA-N 1,3,5-tris(6-isocyanatohexyl)-1,3,5-triazin-2,4,6-trione Chemical compound O=C=NCCCCCCN1C(=O)N(CCCCCCN=C=O)C(=O)N(CCCCCCN=C=O)C1=O KCZQSKKNAGZQSZ-UHFFFAOYSA-N 0.000 description 1
- VGHSXKTVMPXHNG-UHFFFAOYSA-N 1,3-diisocyanatobenzene Chemical compound O=C=NC1=CC=CC(N=C=O)=C1 VGHSXKTVMPXHNG-UHFFFAOYSA-N 0.000 description 1
- SBJCUZQNHOLYMD-UHFFFAOYSA-N 1,5-Naphthalene diisocyanate Chemical compound C1=CC=C2C(N=C=O)=CC=CC2=C1N=C=O SBJCUZQNHOLYMD-UHFFFAOYSA-N 0.000 description 1
- ATOUXIOKEJWULN-UHFFFAOYSA-N 1,6-diisocyanato-2,2,4-trimethylhexane Chemical compound O=C=NCCC(C)CC(C)(C)CN=C=O ATOUXIOKEJWULN-UHFFFAOYSA-N 0.000 description 1
- ICLCCFKUSALICQ-UHFFFAOYSA-N 1-isocyanato-4-(4-isocyanato-3-methylphenyl)-2-methylbenzene Chemical compound C1=C(N=C=O)C(C)=CC(C=2C=C(C)C(N=C=O)=CC=2)=C1 ICLCCFKUSALICQ-UHFFFAOYSA-N 0.000 description 1
- RQBUVIFBALZGPC-UHFFFAOYSA-N 1-isocyanato-4-(4-isocyanatophenyl)benzene Chemical compound C1=CC(N=C=O)=CC=C1C1=CC=C(N=C=O)C=C1 RQBUVIFBALZGPC-UHFFFAOYSA-N 0.000 description 1
- VOZKAJLKRJDJLL-UHFFFAOYSA-N 2,4-diaminotoluene Chemical compound CC1=CC=C(N)C=C1N VOZKAJLKRJDJLL-UHFFFAOYSA-N 0.000 description 1
- 239000005995 Aluminium silicate Substances 0.000 description 1
- MQIUGAXCHLFZKX-UHFFFAOYSA-N Di-n-octyl phthalate Natural products CCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC MQIUGAXCHLFZKX-UHFFFAOYSA-N 0.000 description 1
- 239000005058 Isophorone diisocyanate Substances 0.000 description 1
- OMRDSWJXRLDPBB-UHFFFAOYSA-N N=C=O.N=C=O.C1CCCCC1 Chemical compound N=C=O.N=C=O.C1CCCCC1 OMRDSWJXRLDPBB-UHFFFAOYSA-N 0.000 description 1
- QORUGOXNWQUALA-UHFFFAOYSA-N N=C=O.N=C=O.N=C=O.C1=CC=C(C(C2=CC=CC=C2)C2=CC=CC=C2)C=C1 Chemical compound N=C=O.N=C=O.N=C=O.C1=CC=C(C(C2=CC=CC=C2)C2=CC=CC=C2)C=C1 QORUGOXNWQUALA-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 229920000265 Polyparaphenylene Polymers 0.000 description 1
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 description 1
- KXBFLNPZHXDQLV-UHFFFAOYSA-N [cyclohexyl(diisocyanato)methyl]cyclohexane Chemical compound C1CCCCC1C(N=C=O)(N=C=O)C1CCCCC1 KXBFLNPZHXDQLV-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 125000002723 alicyclic group Chemical group 0.000 description 1
- 150000004645 aluminates Chemical class 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 150000004984 aromatic diamines Chemical class 0.000 description 1
- HIFVAOIJYDXIJG-UHFFFAOYSA-N benzylbenzene;isocyanic acid Chemical class N=C=O.N=C=O.C=1C=CC=CC=1CC1=CC=CC=C1 HIFVAOIJYDXIJG-UHFFFAOYSA-N 0.000 description 1
- 230000001588 bifunctional effect Effects 0.000 description 1
- 125000006267 biphenyl group Chemical group 0.000 description 1
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 description 1
- 239000011400 blast furnace cement Substances 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 150000001993 dienes Chemical class 0.000 description 1
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- 238000010894 electron beam technology Methods 0.000 description 1
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- 238000011156 evaluation Methods 0.000 description 1
- 230000009975 flexible effect Effects 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 125000000623 heterocyclic group Chemical group 0.000 description 1
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- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 1
- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical compound CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 239000004850 liquid epoxy resins (LERs) Substances 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 238000004452 microanalysis Methods 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 229920003986 novolac Polymers 0.000 description 1
- AFEQENGXSMURHA-UHFFFAOYSA-N oxiran-2-ylmethanamine Chemical compound NCC1CO1 AFEQENGXSMURHA-UHFFFAOYSA-N 0.000 description 1
- WVDDGKGOMKODPV-ZQBYOMGUSA-N phenyl(114C)methanol Chemical compound O[14CH2]C1=CC=CC=C1 WVDDGKGOMKODPV-ZQBYOMGUSA-N 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- XNGIFLGASWRNHJ-UHFFFAOYSA-L phthalate(2-) Chemical compound [O-]C(=O)C1=CC=CC=C1C([O-])=O XNGIFLGASWRNHJ-UHFFFAOYSA-L 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Landscapes
- Building Environments (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Laminated Bodies (AREA)
- Aftertreatments Of Artificial And Natural Stones (AREA)
Abstract
Description
本発明は、コンクリート構造物の防食層構造及び防食方法に関する。 The present invention relates to an anticorrosion layer structure of a concrete structure and an anticorrosion method.
従来、下水施設や上水施設の防食工事などに代表される、コンクリート構造物の腐食防止を目的とした樹脂ライニングにおいて、表層材料の耐水性は、その目的を著しく阻害する要因として知られており、耐水性の向上について盛んに研究がなされている。 Conventionally, in resin linings for the purpose of preventing corrosion of concrete structures, such as sewage facilities and anti-corrosion works for water supply facilities, the water resistance of the surface material is known as a factor that significantly impedes the purpose. There has been much research on improving water resistance.
有機ポリイソシアネートからなるイソシアネート成分（Ａ）、並びに、平均分子量１０００〜１００００であって、一分子当たり２個以上の脂肪族アミノ基を有するポリオキシアルキレンポリアミン（ａ）１００重量部、及び、トルエンジアミンを除く、芳香核に電子吸引性基を有さず、かつ、アミノ基の隣接位置に炭素数５以下のアルキル置換基を有する活性芳香族ジアミン（ｂ）１５〜１００重量部からなるポリアミン成分（Ｂ）を、前記イソシアネート成分（Ａ）中のイソシアネート基に対する前記ポリアミン成分（Ｂ）中のアミノ基の当量比が、１／０．７〜１／１．５となる混合比で、高圧二液衝突混合型吹付装置を用いた吹き付け工法によって塗布し、硬化させるコンクリート防食用施工方法で比較的高湿度の閉所においても使用でき、かつ、短時間で高環境負荷条件に耐えうる厚膜型防食用皮膜を形成することが開示されている。（特許文献１） An isocyanate component (A) comprising an organic polyisocyanate, and 100 parts by weight of a polyoxyalkylene polyamine (a) having an average molecular weight of 1000 to 10,000 and having two or more aliphatic amino groups per molecule, and toluenediamine A polyamine component comprising 15 to 100 parts by weight of an active aromatic diamine (b) having no alkyl-withdrawing group in the aromatic nucleus and having an alkyl substituent having 5 or less carbon atoms adjacent to the amino group ( B) is a high-pressure two-component solution at a mixing ratio in which the equivalent ratio of the amino group in the polyamine component (B) to the isocyanate group in the isocyanate component (A) is 1 / 0.7 to 1 / 1.5. This is a concrete anticorrosion construction method that is applied and hardened by a spraying method using a collision-mixing type spraying device, and can be used even in closed areas with relatively high humidity. It can, and has been disclosed to form a thick film type anticorrosion coating which can short time withstand high environmental load conditions. (Patent Document 1)
（Ａ）素地調整材、（Ｂ）プライマー剤、（Ｃ）上塗り材の３層からなるエポキシライニング材であり、さらに、（Ａ）素地調整材は、１個のエポキシ基を有する反応性希釈剤とシランカップリング剤を含有し、骨材は、セメント、硅砂、増粘剤のプレミックスを用い、（Ｂ）プライマー剤は、１個のエポキシ基を有する反応性希釈剤と二酸化チタンと硫酸バリウムを含有し、（Ｃ）上塗り材のエポキシ樹脂がビスフェノールＡ型エポキシ樹脂とビスフェノールＦ型エポキシ樹脂を併用し、１個のエポキシ基を有する芳香族系反応性希釈剤と非反応性芳香族系希釈剤、層状遥変剤の配合物であるエポキシライニング材で、水処理施設、農業用集落排水施設、下水道処理施設等のコンクリート構造物の保護のために塗布し、塗布作業性と防食性に優れることが開示されている。（特許文献２） (A) Substrate adjusting material, (B) Primer agent, (C) Epoxy lining material comprising three layers, and (A) Substrate adjusting material is a reactive diluent having one epoxy group. And a silane coupling agent, the aggregate is cement, cinnabar, and a thickener premix. (B) The primer is a reactive diluent having one epoxy group, titanium dioxide, and barium sulfate. (C) The epoxy resin of the top coating material is a combination of a bisphenol A type epoxy resin and a bisphenol F type epoxy resin, an aromatic reactive diluent having one epoxy group and a non-reactive aromatic dilution It is an epoxy lining material that is a mixture of a chemical agent and a layered far-changing agent, and is applied to protect concrete structures such as water treatment facilities, agricultural settlement drainage facilities, sewerage treatment facilities, etc. It is disclosed that excellent. (Patent Document 2)
ライニング層に補強材として目付量が１５〜１００ｇ／ｍ２であり、且つ、空孔の平均直径が５〜１００μｍで、繊維を紙状に固定した無機繊維紙を１層以上使用し、該無機繊維紙に粘度が１００〜１，５００ｍＰａ・ｓの樹脂組成物を含浸・硬化させることで、防食被膜の目的を著しく阻害する要因であるピンホールを防ぐことができることが開示されている。（特許文献３） One or more layers of inorganic fiber paper having a basis weight of 15 to 100 g / m 2 as a reinforcing material in the lining layer and an average diameter of pores of 5 to 100 μm and fibers fixed in a paper shape are used. It is disclosed that pinholes, which are factors that significantly impede the purpose of the anticorrosion coating, can be prevented by impregnating and curing a fiber paper with a resin composition having a viscosity of 100 to 1,500 mPa · s. (Patent Document 3)
水性ポリオール、イソシアネート化合物、水硬性セメントを少なくとも含む配合物を塗工して仕上げるウレタン樹脂系のライニング材を使用したライニング層並びにその施工法で、エポキシ樹脂系のライニング材での耐酸性が悪い、低温硬化性が悪く工期が長い、下地の含水率が高いと施工後に剥離する、作業者にカブレ等の解消ができることが開示されている。（特許文献４）
コンクリート構造物の防食用ライニング材としては、エポキシ樹脂、吹付けて施工するポリウレア樹脂、ウレタン樹脂等があるが、エポキシ樹脂は硬くてもろい性状を有するため、ひび割れ追従性が低く、吹付けウレア樹脂は、専用の大型機械が必要であり、樹脂の昇温を必要とするため、多大な時間を要し、ウレタン樹脂は、柔軟な性状からひび割れには追従するが、ウレタン結合の加水分解により耐水性が低いという問題点がある。 Anticorrosion lining materials for concrete structures include epoxy resin, sprayed polyurea resin, urethane resin, etc., but epoxy resin is hard and brittle, so it has low crack followability and sprayed urea resin Requires a large dedicated machine and requires a high temperature of the resin, so it takes a lot of time. Urethane resins follow cracks due to their flexible properties, but they are water resistant by hydrolysis of urethane bonds. There is a problem that the nature is low.
本発明の課題は、高い耐水性を有し、簡便に施工可能なコンクリート構造物の防食構造、防食方法を提供することである。 An object of the present invention is to provide an anticorrosion structure and an anticorrosion method for a concrete structure that have high water resistance and can be easily constructed.
請求項１の発明は、コンクリート構造物の防食層構造であって、コンクリート素地上にエポキシ樹脂水硬性組成物層、ポリウレタン樹脂水硬性組成物層、ポリウレア樹脂層の層構成を有することを特徴とする防食層構造であり、ふくれが発生せず、下地の伸縮に追従し、クラックを生じない。 The invention of claim 1 is an anticorrosion layer structure of a concrete structure, characterized by having a layer structure of an epoxy resin hydraulic composition layer, a polyurethane resin hydraulic composition layer, and a polyurea resin layer on the concrete substrate. The anticorrosion layer structure does not cause blistering, follows the expansion and contraction of the base, and does not crack.
請求項２の発明は、上記ポリウレア樹脂層のアミンが芳香族アミンからなるポリウレア樹脂層であることを特徴とする請求項１に記載の防食層構造であり、ポリウレア樹脂層が手塗り施工可能な可使時間を有するリウレア樹脂となるため、均一な膜厚を得られ、下地の伸縮に追従し、かつ高い耐水性が得られる。 The invention according to claim 2 is the anticorrosion layer structure according to claim 1, wherein the amine of the polyurea resin layer is a polyurea resin layer comprising an aromatic amine, and the polyurea resin layer can be applied by hand. Since it becomes a reurea resin having a pot life, a uniform film thickness can be obtained, following the expansion and contraction of the base, and high water resistance can be obtained.
請求項３の発明は、上記ポリウレア樹脂が混合後、２３℃で初期粘度の２倍となる時間が５分以上であるポリウレア樹脂層であることを特徴とする請求項１乃至２いずれかに記載の防食層構造であり、コテで塗布でき、均一な膜厚、安定した品質の塗膜ができ、上記ふくれが発生せず、下地の伸縮に追従し、クラックを生じない等の効果が高度なものとなる。 A third aspect of the present invention is the polyurea resin layer according to any one of the first and second aspects, wherein the polyurea resin layer has a time period of 5 minutes or more after the mixing of the polyurea resin at 23 ° C. to be twice the initial viscosity. The anti-corrosion layer structure, which can be applied with a trowel, has a uniform film thickness, a stable quality coating, does not generate blisters, follows the expansion and contraction of the base, and has high effects such as no cracks. It will be a thing.
請求項４の発明は、コンクリート構造物の素地上にエポキシ樹脂水硬性組成物を塗布し、硬化後ポリウレタン樹脂水硬性組成物を塗布し、硬化後さらにポリウレア樹脂を塗布する防食方法であり、簡単な施工で、湿潤コンクリートに対しても密着性が高く、ふくれが発生せず、高い耐水性が得られる。 The invention according to claim 4 is an anticorrosion method in which an epoxy resin hydraulic composition is applied to the surface of a concrete structure, a polyurethane resin hydraulic composition is applied after curing, and a polyurea resin is further applied after curing. With good construction, it has high adhesion to wet concrete, no blistering and high water resistance.
本発明の防食層構造はふくれが発生せず、クラックを生じず、防食方法は湿潤コンクリートにも塗布でき、簡単な施工で前記層構造を構成できる。 The anticorrosion layer structure of the present invention does not cause blisters, does not cause cracks, and the anticorrosion method can be applied to wet concrete, so that the layer structure can be formed by simple construction.
従来のエポキシ樹脂防食用ライニング材が樹脂の性質上、吹付けて施工するポリウレア樹脂は吹き付け均一性上、ポリウレタン樹脂ではポリウレア樹脂に比し、強靭性が劣るため、素地材のひび割れ追従性が低い、耐水耐久性が低い。本発明はこれらの課題を解決した。 The conventional epoxy resin anticorrosion lining material is sprayed and the polyurea resin applied by spraying is uniform, and the polyurethane resin is inferior in toughness to the polyurea resin. Low water resistance. The present invention has solved these problems.
本発明のエポキシ樹脂水硬性組成物は、水系エポキシ樹脂と水硬性成分、骨材等から構成される。水系エポキシ樹脂はエポキシ樹脂或いはその硬化剤いずれかが親水性であり、エポキシ樹脂として水分散とすることができるもので、非親水エポキシ樹脂は、液状であり、常温硬化するものであればよく、ビスフェノールＡ型エポキシ樹脂、ビスフェノールＦ型エポキシ樹脂、フェノールノボラック型エポキシ樹脂、ビスフェノールＡＤ型エポキシ樹脂、ビフェニル型エポキシ樹脂、ナフタレン型エポキシ樹脂、脂環式エポキシ樹脂、グリシジルエステル型エポキシ樹脂、グリシジルアミン型エポキシ樹脂、複素環式エポキシ樹脂、ジアリールスルホン型エポキシ樹脂、ヒドロキノン型エポキシ樹脂およびそれらの変性物などを単独あるいは併せて用いてもよく、また、希釈剤を用いて液状化してもよい。最も多く配合するエポキシ樹脂の軟化点は、３５℃以下が好ましい。このような液状エポキシ樹脂としては、液状ビスフェノールＡ型エビスフェノールポキシ樹脂が、汎用性、コスト等で好ましい。親水性エポキシ樹脂は主鎖のポリエーテル構造の導入、親水性基の導入、親水性アミンとのプレ反応したエポキシ樹脂が挙げられる。エポキシ樹脂硬化剤としては汎用硬化剤で親水性のもの、親水性アミンにエポキシ等をプレ反応させて、耐水性を改善したもの等を挙げることができる。代表例として、ビスフェノールＡ型エポキシ樹脂組成物であるダイナミックレジンＰ−９６０Ｒ（アイカ工業（株）、商品名）、硬化剤としてはメタキシレンジアミン変性物とイソフォロジアミン変性物等から成る変性脂肪族ポリアミンであるダイナミックレジンＰ−９６０Ｈ（アイカ工業（株）、商品名）を挙げることができる。 The epoxy resin hydraulic composition of the present invention is composed of a water-based epoxy resin, a hydraulic component, an aggregate, and the like. As for the water-based epoxy resin, either the epoxy resin or its curing agent is hydrophilic and can be water-dispersed as an epoxy resin, and the non-hydrophilic epoxy resin may be liquid and can be cured at room temperature. Bisphenol A type epoxy resin, bisphenol F type epoxy resin, phenol novolac type epoxy resin, bisphenol AD type epoxy resin, biphenyl type epoxy resin, naphthalene type epoxy resin, alicyclic epoxy resin, glycidyl ester type epoxy resin, glycidyl amine type epoxy Resins, heterocyclic epoxy resins, diaryl sulfone type epoxy resins, hydroquinone type epoxy resins and modified products thereof may be used alone or in combination, or may be liquefied using a diluent. The softening point of the epoxy resin compounded most is preferably 35 ° C. or less. As such a liquid epoxy resin, a liquid bisphenol A-type bisphenoloxy resin is preferable in terms of versatility and cost. Examples of the hydrophilic epoxy resin include introduction of a polyether structure of a main chain, introduction of a hydrophilic group, and an epoxy resin pre-reacted with a hydrophilic amine. Examples of the epoxy resin curing agent include general-purpose curing agents that are hydrophilic and those that have improved water resistance by pre-reacting a hydrophilic amine with epoxy or the like. Representative examples include a dynamic resin P-960R (Aika Industry Co., Ltd., trade name), which is a bisphenol A type epoxy resin composition, and a modified aliphatic composed of a metaxylenediamine modified product and an isophorodiamine modified product as a curing agent. Dynamic resin P-960H (Aika Industry Co., Ltd., trade name) which is a polyamine can be mentioned.
水硬性成分はセメントであり、セメントとしては水硬性であれば特に限定されることはなく、普通ポルトランドセメント、早強ポルトランドセメント、中庸熱ポルトランドセメント、耐硫酸塩ポルトランドセメント、白色ポルトランドセメント等の各種ポルトランドセメントや高炉セメント、シリカセメント、フライアッシュセメント等の混合セメントや、アルミン酸石灰質セメント、ケイ酸アルミン酸石灰質セメント、リン酸セメント等が使用できる。 The hydraulic component is cement, and the cement is not particularly limited as long as it is hydraulic. Mixed cements such as Portland cement, blast furnace cement, silica cement, fly ash cement, aluminate calcareous cement, silicic acid aluminate calcareous cement, phosphate cement and the like can be used.
骨材はエポキシ樹脂水硬性組成物の塗布作業性、硬化収縮、物性面より適宜選択し、硅砂等の骨材の組み合わせて使う。例えば前記代表例のエポキシ樹脂、及び硬化剤のダイナミックレジンＰ−９６０ＲとダイナミックレジンＰ−９６０Ｈに最適化された水硬性成分と骨材のプレミックス品ダイナミックレジンＰ−９６０Ｆ（アイカ工業（株）、商品名、ポルトランドセメント系）を挙げることができる。 The aggregate is appropriately selected from the application workability, curing shrinkage, and physical properties of the epoxy resin hydraulic composition, and used in combination with aggregate such as cinnabar sand. For example, the epoxy resin of the above representative examples, and the hydraulic component P-960F optimized for the dynamic resin P-960R and the dynamic resin P-960H of the curing agent and the aggregate premix product Dynamic resin P-960F (Aika Industry Co., Ltd., (Trade name, Portland cement type).
エポキシ樹脂水硬性組成物は湿潤面のコンクリート素地上に塗布されても、防水層構成後ふくれを生ずることがなく、塗布量は０．５〜１．０ｋｇ／ｍ２の範囲で、素地状態等により、適宜選択される。また、塗布後、ポリウレタン樹脂水硬性組成物塗布までに大凡１２時間〜７日間の範囲の許容時間となる。 Even if the epoxy resin hydraulic composition is applied to the concrete surface of the wet surface, it does not cause blistering after the construction of the waterproof layer, the application amount is in the range of 0.5 to 1.0 kg / m 2 , the substrate state, etc. Is appropriately selected. Further, after the coating, the allowable time is in the range of about 12 hours to 7 days before the polyurethane resin hydraulic composition is coated.
本発明のポリウレタン樹脂水硬性組成物はポリオール、イソシアネート化合物、水硬性成分等で構成される。 The polyurethane resin hydraulic composition of the present invention comprises a polyol, an isocyanate compound, a hydraulic component, and the like.
ポリオールはポリエステルポリオール、ポリエーテルポリオール、アクリルポリオール、エポキシ変性ポリオール、ひまし油変性ポリオール等の二基以上の水酸基を持つポリオールがあげられる。 Examples of the polyol include polyols having two or more hydroxyl groups such as polyester polyols, polyether polyols, acrylic polyols, epoxy-modified polyols and castor oil-modified polyols.
イソシアネート化合物としては、トリレンジイソシアネート（ＴＤＩ）、ジフェニルメタンジイソシアネート（ＭＤＩ）、ヘキサメチレンジイソシアネート（ＨＤＩ）、水添化ジフェニルメタンジイソシアネート、水添化トリレンジイソシアネート、キシリレンジイソシアネート、イソホロンジイソシアネート、多核ポリフェニレンポリメチルポリイソシアネート、（以下ポリメリックＭＤＩと略す）を含有するもの等があげられる。 Isocyanate compounds include tolylene diisocyanate (TDI), diphenylmethane diisocyanate (MDI), hexamethylene diisocyanate (HDI), hydrogenated diphenylmethane diisocyanate, hydrogenated tolylene diisocyanate, xylylene diisocyanate, isophorone diisocyanate, polynuclear polyphenylene polymethyl poly. Examples thereof include those containing isocyanate and (hereinafter abbreviated as polymeric MDI).
水硬性成分、骨材は前記エポキシ樹脂水硬性組成物と同じものを用いることができる。 The hydraulic component and the aggregate can be the same as the epoxy resin hydraulic composition.
ポリウレタン樹脂水硬性組成物の代表例としてポリオール組成物としてアイカピュールＪＪ−１００Ａ（アイカ工業（株）、商品名、水分散型ポリオール）、イソシアネート化合物としてアイカピュールＪＪ−１００Ｂ（アイカ工業（株）、商品名、ポリメリックＭＤＩ）をあげることができる。 Representative examples of polyurethane resin hydraulic compositions include Aikapur JJ-100A (Aika Industry Co., Ltd., trade name, water-dispersed polyol) as a polyol composition, and Aikapur JJ-100B (Aika Industry Co., Ltd.) as an isocyanate compound. Product name, polymeric MDI).
ポリウレタン樹脂水硬性組成物は前記エポキシ樹脂水硬性組成物層上に塗布され、ポリウレア樹脂との密着性を確保し、本発明の層構造の機能を実現する。塗布量は０．１〜０．２ｋｇ／ｍ２の範囲で適宜決定する。ポリウレア樹脂組成物塗布までに大凡１２時間〜７日間の範囲の許容時間となる。 The polyurethane resin hydraulic composition is applied on the epoxy resin hydraulic composition layer to ensure adhesion with the polyurea resin and realize the function of the layer structure of the present invention. The coating amount is appropriately determined in the range of 0.1 to 0.2 kg / m 2 . The allowable time is approximately 12 hours to 7 days before the polyurea resin composition is applied.
本発明のポリウレア樹脂は芳香族アミンとポリイソシアネート或いは末端イソシアネートプレポリマー、充填剤等から構成され、芳香族アミンは化１に示す分子内に芳香環を有し、芳香環とアミノ基が直接結合しているもので、同一分子内に２つ以上のアミンを有するものである。手塗、コテ塗を可能とする可使時間と物性の両立が可能となる。 The polyurea resin of the present invention is composed of an aromatic amine and a polyisocyanate or a terminal isocyanate prepolymer, a filler and the like. The aromatic amine has an aromatic ring in the molecule shown in Chemical Formula 1, and the aromatic ring and the amino group are directly bonded. It has two or more amines in the same molecule. Both pot life and physical properties that enable manual coating and iron coating are possible.
上記 化１のＲの構造はポリエーテル、ポリエステル等があげられる。ｍ＝１〜２、ｎ＝２〜３
上記芳香族アミンの内、ｍ＝１、ｎ＝２で、Ｒがポリエーテルの市販製品としてエラストマー１０００Ｐ（イハラケミカル工業（株）、商品名、アミン価８０〜９０）、ＶＥＲＳＡＬＩＮＫＰ−１０００（エアプロダクツジャパン（株）、商品名、アミン価８０〜９０）、ポレアＳＬ１００Ａ（イハラケミカル工業（株）、商品名）がある。
ポリイソシアネートはヘキサメチレンジイソシアネート（ＨＭＤＩ）、２，２，４−トリメチルヘキサメチレンジイソシアネート、１，３，６−ヘキサメチレントリイソシアネート、シクロヘキサンジイソシアネート、ジシクロヘキシルメタンジイソシアネート、２−イソシアネートエチル−２，６−ジイソシアネートヘキサノエート、トリス（６−イソシアネートヘキシル）イソシアヌレート、トリメチロールプロパンとヘキサメチレンジイソシアネートの付加体、２，４−トリレンジイソシアネート（２，４−ＴＤＩ）、２，６−トリレンジイソシアネート（２，６−ＴＤＩ）及びこれら２，４−ＴＤＩと２，６−ＴＤＩの混合物、２，４−トリレンジイソシアネートの二量体、キシレンジイソシアネート（ＸＤＩ）、メタキシリレンジイソシアネート（ＭＸＤＩ）、テトラメチルキシリレンジイソシアネート、ｍ−フェニレンジイソシアネート、４，４′−ビフェニルジイソシアネート、ジフェニルエーテル−４，４′−ジイソシアネート、３，３′−ジトルエン−４，４′−ジイソシアネート（ＴＯＤＩ）、ジアニシジンジイソシアネート（ＤＡＤＩ）、４，４′−ジフェニルメタンジイソシアネート（ＭＤＩ）、３，３′−ジメチル−４，４′−ジフェニルメタンジイソシアネート、１，５−ナフタレンジイソシアネート（ＮＤＩ）、トリフェニルメタントリイソシアネート（ＴＴＩ）等を挙げることができ、ポリウレア樹脂層の伸び性、耐水性、硬化性等を調整するために前記ポリイソシアネートとポリエーテルポリオール、ポリエステルポリオール、ポリカーボネートジオール、ひまし油変性ポリオールを反応させた末端イソシアネートプレポリマーを使用することができ、目的仕様に応じて、ポリイソシアネート、末端イソシアネートプレポリマー単独或いは２者の混合して使うことができる。
Examples of the structure of R in Chemical Formula 1 include polyether and polyester. m = 1-2, n = 2-3
Among the above aromatic amines, m = 1, n = 2, and R is a polyether product, Elastomer 1000P (Ihara Chemical Industry Co., Ltd., trade name, amine value 80-90), VERSALINKP-1000 (Air Products) Japan Co., Ltd., trade name, amine value 80-90), and Porea SL100A (Ihara Chemical Industry Co., Ltd., trade name).
Polyisocyanates are hexamethylene diisocyanate (HMDI), 2,2,4-trimethylhexamethylene diisocyanate, 1,3,6-hexamethylene triisocyanate, cyclohexane diisocyanate, dicyclohexylmethane diisocyanate, 2-isocyanatoethyl-2,6-diisocyanate hexa Noate, tris (6-isocyanatohexyl) isocyanurate, adduct of trimethylolpropane and hexamethylene diisocyanate, 2,4-tolylene diisocyanate (2,4-TDI), 2,6-tolylene diisocyanate (2,6 -TDI) and mixtures of these 2,4-TDI and 2,6-TDI, dimers of 2,4-tolylene diisocyanate, xylene diisocyanate (XDI), metaxylylene diene Socyanate (MXDI), tetramethylxylylene diisocyanate, m-phenylene diisocyanate, 4,4'-biphenyl diisocyanate, diphenyl ether-4,4'-diisocyanate, 3,3'-ditoluene-4,4'-diisocyanate (TODI), Dianisidine diisocyanate (DADI), 4,4'-diphenylmethane diisocyanate (MDI), 3,3'-dimethyl-4,4'-diphenylmethane diisocyanate, 1,5-naphthalene diisocyanate (NDI), triphenylmethane triisocyanate (TTI) In order to adjust the extensibility, water resistance, curability, etc. of the polyurea resin layer, the polyisocyanate and polyether polyol, polyester polyol, polycarbonate Diols, can be used isocyanate-terminated prepolymer obtained by reacting castor oil-modified polyol, depending on the purpose specification, the polyisocyanate can be used as a mixture of isocyanate terminated prepolymer singly or two.
ポリウレア樹脂に使用する充填剤は重質炭酸カルシウム、軽質炭酸カルシウム、カオリン、タルク、酸化チタン、珪酸アルミニウム、酸化マグネシウム、酸化亜鉛、カーボンブラック、微粉末チタン、硅砂、クレー、タルク、微粉末シリカなどを挙げることができ、機械物性を向上させる。また、希釈剤と併せて揺変性等の粘性調整をすることができる。希釈剤としてはベンジルアルコール、ジオクチルフタレート、ブチルベンジルフタレート等のフタル酸エステル系可塑剤等があげられ、その他の添加剤として消泡剤、接着助剤、老化防止剤、安定剤などの添加剤することができる。 Fillers used for polyurea resin are heavy calcium carbonate, light calcium carbonate, kaolin, talc, titanium oxide, aluminum silicate, magnesium oxide, zinc oxide, carbon black, fine powder titanium, cinnabar sand, clay, talc, fine powder silica, etc. To improve mechanical properties. In addition, viscosity adjustment such as thixotropy can be performed together with the diluent. Diluents include phthalate plasticizers such as benzyl alcohol, dioctyl phthalate, and butyl benzyl phthalate. Other additives include antifoaming agents, adhesion aids, anti-aging agents, stabilizers, etc. be able to.
ポリウレア樹脂は層構造の強度面、耐水面を担い前記ポリウレア樹脂の構成要素を適宜選択し目的とするポリウレア樹脂層を形成する。ポリウレア樹脂の強度を高く設定すれば、層厚さを減らすことができ、厚さのばらつきと信頼性で決定し、大凡塗布量は１ｋｇ／ｍ２以上で設定される。 The polyurea resin bears the strength and water resistance of the layer structure, and the constituent elements of the polyurea resin are appropriately selected to form the desired polyurea resin layer. If the strength of the polyurea resin is set high, the layer thickness can be reduced, which is determined by thickness variation and reliability, and the coating amount is generally set at 1 kg / m 2 or more.
層構造の防食性能は耐硫酸性として、１２０日間１０％硫酸水溶液（２３±２℃）に浸漬した時の硫黄侵入深さが１００μｍ以下であれば、硫酸のコンクリート躯体への浸透を抑制できる。またポリウレア樹脂は強靭性、下地の伸縮に対するひび割れ抑制性能から、本発明の層構造は防食に使用することができる。 The anticorrosion performance of the layer structure is sulfuric acid resistance, and if the sulfur penetration depth when immersed in a 10% sulfuric acid aqueous solution (23 ± 2 ° C.) for 120 days is 100 μm or less, the penetration of sulfuric acid into the concrete frame can be suppressed. In addition, the polyurea resin can be used for corrosion prevention because of its toughness and the ability to suppress cracking against expansion and contraction of the substrate.
さらに、１００日間２３℃の水中に浸漬した後の重量変化率が１０％以下であれば、コンクリート構造物の腐食を抑えることができる。また、均一な膜を形成することが必要であるが、２３℃で混合した後、初期粘度が２倍に増粘するまでの時間が５分未満では、コテによる作業が困難で、均一な膜ができず、コテによる脱泡、抑えができない。 Furthermore, if the weight change rate after being immersed in water at 23 ° C. for 100 days is 10% or less, corrosion of the concrete structure can be suppressed. In addition, it is necessary to form a uniform film. However, if the time until the initial viscosity is doubled after mixing at 23 ° C. is less than 5 minutes, it is difficult to work with a trowel and the uniform film Can not be defoamed and suppressed with a trowel.
以下に、本発明を、実施例・比較例を挙げて説明する。
エポキシ樹脂水硬性組成物
ダイナミックレジンＰ９６０Ｒを１００重量部、ダイナミックレジンＰ−９６０Ｈを３００重量部混合し、ダイナミックレジンＰ−９６０Ｆを３００重量部混合撹拌したものをエポキシ樹脂水硬性組成物とした。
ポリウレタン樹脂水硬性組成物
アイカピュールＪＪ−１００Ａ１００重量部、アイカピュールＪＪ−１００Ｂ１００重量部を攪拌機にて混合し、希釈剤としてＫＭＣ−１１３（日鉱商事（株）、商品名、アルキルナフタレン溶剤）１０重量部添加、これにポルトランドセメント８０重量部を混合撹拌したものをポリウレタン樹脂水硬性組成物とした。
ポリウレア樹脂
ＳＬ−１００Ａ２７０重量部と、揺変性改善としてレオロシールＰＭ２０Ｌ（（株）トクヤマ、商品名、疎水性シリカ）３０重量部とを混合撹拌し、これにミリオネートＭＴ（日本ポリウレタン工業（株）、商品名、ＭＤＩ）５０．４重量部、Ｐ−２０００（（株）ＡＤＥＫＡ、商品名、２官能ＰＰＧ系ポリオール）４９．６重量部を窒素雰囲気下にて反応させて得られた末端イソシアネートプレポリマー１００重量部と混合撹拌したものをポリウレア樹脂とした。このポリウレア樹脂は２３℃１０分放置後でも粘度は初期の２倍以下であった。
Hereinafter, the present invention will be described with reference to examples and comparative examples.
Epoxy resin hydraulic composition 100 parts by weight of dynamic resin P960R, 300 parts by weight of dynamic resin P-960H, and 300 parts by weight of dynamic resin P-960F were mixed and stirred to obtain an epoxy resin hydraulic composition.
Polyurethane resin hydraulic composition 100 parts by weight of Aikapur JJ-100A and 100 parts by weight of Aikapur JJ-100B were mixed with a stirrer, and 10 weights of KMC-113 (Nikko Shoji Co., Ltd., trade name, alkylnaphthalene solvent) as a diluent. A polyurethane resin hydraulic composition was prepared by adding 80 parts by weight of Portland cement thereto and stirring the mixture.
270 parts by weight of polyurea resin SL-100A and 30 parts by weight of Leolosil PM20L (Tokuyama Co., Ltd., trade name, hydrophobic silica) for thixotropy improvement were mixed and stirred, and Millionate MT (Nippon Polyurethane Industry Co., Ltd., Commodity) Name, MDI) 50.4 parts by weight, P-2000 (Adeka Co., Ltd., trade name, bifunctional PPG polyol) 49.6 parts by weight of a terminal isocyanate prepolymer 100 obtained by reacting in a nitrogen atmosphere What was mixed and stirred with parts by weight was used as a polyurea resin. Even after this polyurea resin was left at 23 ° C. for 10 minutes, the viscosity was less than twice the initial value.
３００ｍｍ角、厚さ６０ｍｍのモルタルブロックを２３℃環境下にて水に一日浸漬させたものを厚さ方向で、一部水に浸漬した状態で、上記エポキシ樹脂水硬性組成物をコテで０．７ｋｇ／ｍ２塗布し、２３℃１日静置し、上記ポリウレタン樹脂水硬性組成物を０．１５ｋｇ／ｍ２ローラーで塗布し２３℃１日静置し、さらに、上記ポリウレア樹脂を１ｋｇ／ｍ２塗布し２３℃７日静置したものを実施例１の防食層構造とした。なお、実施例１の防食層構造では１０％硫酸水溶液（２３℃±２℃）に１２０日間浸漬処理後、電子線マイクロアナリシスによる硫黄侵入深さについて分析した結果、０であった。 A mortar block of 300 mm square and 60 mm thickness immersed in water in a 23 ° C. environment for one day is partially immersed in water in the thickness direction, and the epoxy resin hydraulic composition is 0 with a trowel. .7kg / m 2 was applied, allowed to stand 23 ° C. 1 day, coating the polyurethane resin hydraulic composition at 0.15 kg / m 2 roller standing 23 ° C. 1 day, further, the polyurea resin 1 kg / m 2 coated those standing 23 ° C. 7 days was anticorrosion layer structure of the first embodiment. In addition, in the anticorrosion layer structure of Example 1, it was 0 as a result of analyzing about the sulfur penetration depth by electron beam microanalysis after 120-day immersion treatment in 10% sulfuric acid aqueous solution (23 degreeC +/- 2 degreeC).
比較例１
実施例１のエポキシ樹脂水硬性組成物とポリウレタン樹脂水硬性組成物を塗布しない以外同じく行い比較例１とした。
Comparative Example 1
Comparative Example 1 was conducted in the same manner except that the epoxy resin hydraulic composition of Example 1 and the polyurethane resin hydraulic composition were not applied.
比較例２
実施例１のエポキシ樹脂水硬性組成物を塗布しない以外同じく行い比較例２とした。
Comparative Example 2
Comparative Example 2 was conducted in the same manner except that the epoxy resin hydraulic composition of Example 1 was not applied.
比較例３
実施例１のポリウレタン樹脂水硬性組成物を塗布しない以外同じく行い比較例３とした。
Comparative Example 3
Comparative Example 3 was conducted in the same manner except that the polyurethane resin hydraulic composition of Example 1 was not applied.
表は下記方法、評価とした。
密着性：スクレーパーを用いて強制剥離を行い、モルタル材破せず、層間のいずれかで剥離が認められたものを×、層間では剥離せず、モルタル材破したものを○とした。
ふくれ：実施例、比較例を実施後目視にて評価し、ふくれが全く見られないものを○、少しでも見られたものを×とした。
The table shows the following method and evaluation.
Adhesiveness: Forced peeling was performed using a scraper, and the mortar material was not broken and the peeling was observed in any of the layers was evaluated as x. The mortar material was not peeled off and the mortar material was broken.
Fluff: Examples and comparative examples were evaluated by visual inspection, and those in which no blister was seen were marked with ◯, and those that were seen even a little were marked with x.
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| CN102658685A (en) * | 2012-05-08 | 2012-09-12 | 江苏苏博特新材料股份有限公司 | Polyurethane/polyurea composite protective layer and preparation method thereof, and application of polyurethane/polyurea composite protective layer in concrete shielding |
| JP2013216523A (en) * | 2012-04-06 | 2013-10-24 | Aica Kogyo Co Ltd | Floor concrete finishing structure and floor concrete finishing method |
| CN103863714A (en) * | 2014-03-25 | 2014-06-18 | 江苏兰宇保温科技有限公司 | Flame-retarding high-strength thermal insulation polyurea coat and preparation method thereof |
| JP2019162618A (en) * | 2018-03-15 | 2019-09-26 | ドレープフィーチャリング株式会社 | Construction method |
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| CN106522089B (en) * | 2016-12-14 | 2018-12-25 | 北京星汉舟科技有限责任公司 | Quantification can reversed coating concrete functional coating |
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