JPS62259832A - Method of corrosion-proofing steel material - Google Patents
Method of corrosion-proofing steel materialInfo
- Publication number
- JPS62259832A JPS62259832A JP7530686A JP7530686A JPS62259832A JP S62259832 A JPS62259832 A JP S62259832A JP 7530686 A JP7530686 A JP 7530686A JP 7530686 A JP7530686 A JP 7530686A JP S62259832 A JPS62259832 A JP S62259832A
- Authority
- JP
- Japan
- Prior art keywords
- epoxy resin
- tape
- corrosion
- undercoating
- steel material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 35
- 239000010959 steel Substances 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 32
- 239000000463 material Substances 0.000 title claims abstract description 21
- 239000003822 epoxy resin Substances 0.000 claims abstract description 48
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 48
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 38
- 239000012790 adhesive layer Substances 0.000 claims abstract description 36
- 238000005260 corrosion Methods 0.000 claims abstract description 22
- 230000007797 corrosion Effects 0.000 claims abstract description 12
- 229920001187 thermosetting polymer Polymers 0.000 claims abstract description 12
- 229920000098 polyolefin Polymers 0.000 claims description 45
- 239000010410 layer Substances 0.000 claims description 40
- 230000001070 adhesive effect Effects 0.000 claims description 30
- 239000000853 adhesive Substances 0.000 claims description 29
- -1 polypropylene Polymers 0.000 claims description 21
- 239000000203 mixture Substances 0.000 claims description 20
- 239000004698 Polyethylene Substances 0.000 claims description 7
- 229920000573 polyethylene Polymers 0.000 claims description 7
- 239000004743 Polypropylene Substances 0.000 claims description 6
- 239000003960 organic solvent Substances 0.000 claims description 6
- 229920001155 polypropylene Polymers 0.000 claims description 6
- 238000005536 corrosion prevention Methods 0.000 claims description 4
- 229920005989 resin Polymers 0.000 abstract description 12
- 239000011347 resin Substances 0.000 abstract description 12
- 239000003518 caustics Substances 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 238000009736 wetting Methods 0.000 abstract description 2
- 238000001035 drying Methods 0.000 abstract 1
- 239000004593 Epoxy Substances 0.000 description 22
- 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 17
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 12
- 229920005672 polyolefin resin Polymers 0.000 description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 9
- 239000005060 rubber Substances 0.000 description 8
- 238000000576 coating method Methods 0.000 description 7
- 238000010276 construction Methods 0.000 description 7
- 229920001971 elastomer Polymers 0.000 description 7
- 229920003023 plastic Polymers 0.000 description 7
- 239000004033 plastic Substances 0.000 description 7
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 6
- 239000003085 diluting agent Substances 0.000 description 6
- 239000000843 powder Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- GYZLOYUZLJXAJU-UHFFFAOYSA-N diglycidyl ether Chemical compound C1OC1COCC1CO1 GYZLOYUZLJXAJU-UHFFFAOYSA-N 0.000 description 5
- 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 5
- 239000002985 plastic film Substances 0.000 description 5
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- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 4
- 239000000654 additive Substances 0.000 description 4
- 229920000180 alkyd Polymers 0.000 description 4
- 150000002148 esters Chemical class 0.000 description 4
- 239000000945 filler Substances 0.000 description 4
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 4
- 239000005011 phenolic resin Substances 0.000 description 4
- 229920000768 polyamine Polymers 0.000 description 4
- 239000000454 talc Substances 0.000 description 4
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- 229920005992 thermoplastic resin Polymers 0.000 description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 3
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
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- 150000008064 anhydrides Chemical class 0.000 description 3
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 3
- 239000003086 colorant Substances 0.000 description 3
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- 238000010030 laminating Methods 0.000 description 3
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- 239000003921 oil Substances 0.000 description 3
- 239000004014 plasticizer Substances 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 235000012239 silicon dioxide Nutrition 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 3
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 2
- QLZJUIZVJLSNDD-UHFFFAOYSA-N 2-(2-methylidenebutanoyloxy)ethyl 2-methylidenebutanoate Chemical compound CCC(=C)C(=O)OCCOC(=O)C(=C)CC QLZJUIZVJLSNDD-UHFFFAOYSA-N 0.000 description 2
- JAHNSTQSQJOJLO-UHFFFAOYSA-N 2-(3-fluorophenyl)-1h-imidazole Chemical compound FC1=CC=CC(C=2NC=CN=2)=C1 JAHNSTQSQJOJLO-UHFFFAOYSA-N 0.000 description 2
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 229930185605 Bisphenol Natural products 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 description 2
- QVHMSMOUDQXMRS-UHFFFAOYSA-N PPG n4 Chemical compound CC(O)COC(C)COC(C)COC(C)CO QVHMSMOUDQXMRS-UHFFFAOYSA-N 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 2
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 2
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 150000008065 acid anhydrides Chemical class 0.000 description 2
- 230000003712 anti-aging effect Effects 0.000 description 2
- 125000003118 aryl group Chemical group 0.000 description 2
- 238000003490 calendering Methods 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000006229 carbon black Substances 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 229910002026 crystalline silica Inorganic materials 0.000 description 2
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- QGBSISYHAICWAH-UHFFFAOYSA-N dicyandiamide Chemical compound NC(N)=NC#N QGBSISYHAICWAH-UHFFFAOYSA-N 0.000 description 2
- 229920006244 ethylene-ethyl acrylate Polymers 0.000 description 2
- 239000005042 ethylene-ethyl acrylate Substances 0.000 description 2
- 125000003055 glycidyl group Chemical group C(C1CO1)* 0.000 description 2
- VOZRXNHHFUQHIL-UHFFFAOYSA-N glycidyl methacrylate Chemical compound CC(=C)C(=O)OCC1CO1 VOZRXNHHFUQHIL-UHFFFAOYSA-N 0.000 description 2
- 229920001903 high density polyethylene Polymers 0.000 description 2
- 239000004700 high-density polyethylene Substances 0.000 description 2
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 2
- 239000011976 maleic acid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- LVHBHZANLOWSRM-UHFFFAOYSA-N methylenebutanedioic acid Natural products OC(=O)CC(=C)C(O)=O LVHBHZANLOWSRM-UHFFFAOYSA-N 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 229920003986 novolac Polymers 0.000 description 2
- AFEQENGXSMURHA-UHFFFAOYSA-N oxiran-2-ylmethanamine Chemical compound NCC1CO1 AFEQENGXSMURHA-UHFFFAOYSA-N 0.000 description 2
- RPQRDASANLAFCM-UHFFFAOYSA-N oxiran-2-ylmethyl prop-2-enoate Chemical compound C=CC(=O)OCC1CO1 RPQRDASANLAFCM-UHFFFAOYSA-N 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229920001568 phenolic resin Polymers 0.000 description 2
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 2
- 239000006223 plastic coating Substances 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 229910000077 silane Inorganic materials 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 2
- 238000011282 treatment Methods 0.000 description 2
- HVLLSGMXQDNUAL-UHFFFAOYSA-N triphenyl phosphite Chemical compound C=1C=CC=CC=1OP(OC=1C=CC=CC=1)OC1=CC=CC=C1 HVLLSGMXQDNUAL-UHFFFAOYSA-N 0.000 description 2
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 2
- 230000037303 wrinkles Effects 0.000 description 2
- KMOUUZVZFBCRAM-OLQVQODUSA-N (3as,7ar)-3a,4,7,7a-tetrahydro-2-benzofuran-1,3-dione Chemical compound C1C=CC[C@@H]2C(=O)OC(=O)[C@@H]21 KMOUUZVZFBCRAM-OLQVQODUSA-N 0.000 description 1
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 1
- YSUQLAYJZDEMOT-UHFFFAOYSA-N 2-(butoxymethyl)oxirane Chemical compound CCCCOCC1CO1 YSUQLAYJZDEMOT-UHFFFAOYSA-N 0.000 description 1
- XNWFRZJHXBZDAG-UHFFFAOYSA-N 2-METHOXYETHANOL Chemical compound COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 description 1
- QQZOPKMRPOGIEB-UHFFFAOYSA-N 2-Oxohexane Chemical compound CCCCC(C)=O QQZOPKMRPOGIEB-UHFFFAOYSA-N 0.000 description 1
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 description 1
- ZNQVEEAIQZEUHB-UHFFFAOYSA-N 2-ethoxyethanol Chemical compound CCOCCO ZNQVEEAIQZEUHB-UHFFFAOYSA-N 0.000 description 1
- SVONRAPFKPVNKG-UHFFFAOYSA-N 2-ethoxyethyl acetate Chemical compound CCOCCOC(C)=O SVONRAPFKPVNKG-UHFFFAOYSA-N 0.000 description 1
- LXBGSDVWAMZHDD-UHFFFAOYSA-N 2-methyl-1h-imidazole Chemical compound CC1=NC=CN1 LXBGSDVWAMZHDD-UHFFFAOYSA-N 0.000 description 1
- LLEASVZEQBICSN-UHFFFAOYSA-N 2-undecyl-1h-imidazole Chemical compound CCCCCCCCCCCC1=NC=CN1 LLEASVZEQBICSN-UHFFFAOYSA-N 0.000 description 1
- VQVIHDPBMFABCQ-UHFFFAOYSA-N 5-(1,3-dioxo-2-benzofuran-5-carbonyl)-2-benzofuran-1,3-dione Chemical compound C1=C2C(=O)OC(=O)C2=CC(C(C=2C=C3C(=O)OC(=O)C3=CC=2)=O)=C1 VQVIHDPBMFABCQ-UHFFFAOYSA-N 0.000 description 1
- ALEBYBVYXQTORU-UHFFFAOYSA-N 6-hydrazinyl-6-oxohexanoic acid Chemical compound NNC(=O)CCCCC(O)=O ALEBYBVYXQTORU-UHFFFAOYSA-N 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 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
- 239000004641 Diallyl-phthalate Substances 0.000 description 1
- GXBYFVGCMPJVJX-UHFFFAOYSA-N Epoxybutene Chemical compound C=CC1CO1 GXBYFVGCMPJVJX-UHFFFAOYSA-N 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 239000004640 Melamine resin Substances 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- 229920002978 Vinylon Polymers 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002318 adhesion promoter Substances 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 125000002723 alicyclic group Chemical group 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 150000004982 aromatic amines Chemical class 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 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
- QUDWYFHPNIMBFC-UHFFFAOYSA-N bis(prop-2-enyl) benzene-1,2-dicarboxylate Chemical compound C=CCOC(=O)C1=CC=CC=C1C(=O)OCC=C QUDWYFHPNIMBFC-UHFFFAOYSA-N 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000011280 coal tar Substances 0.000 description 1
- 239000008119 colloidal silica Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 150000004985 diamines Chemical class 0.000 description 1
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 description 1
- 239000001177 diphosphate Substances 0.000 description 1
- XPPKVPWEQAFLFU-UHFFFAOYSA-J diphosphate(4-) Chemical compound [O-]P([O-])(=O)OP([O-])([O-])=O XPPKVPWEQAFLFU-UHFFFAOYSA-J 0.000 description 1
- 235000011180 diphosphates Nutrition 0.000 description 1
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- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000001530 fumaric acid Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 150000002334 glycols Chemical class 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 150000002460 imidazoles Chemical class 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
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- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
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- 125000005498 phthalate group Chemical class 0.000 description 1
- 239000010665 pine oil Substances 0.000 description 1
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Landscapes
- Lining Or Joining Of Plastics Or The Like (AREA)
- Laminated Bodies (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は鋼材の防食方法に関し、更に詳しくは防食テー
プによって鋼材の表面を被覆する鋼材の防食方法に関す
る。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for preventing corrosion of steel materials, and more particularly to a method for preventing corrosion of steel materials by coating the surface of the steel material with an anti-corrosion tape.
石油、ガス等の流体物の輸送方法の一つとして;4管を
用いてパイプラインを施敷する方法が行われている。One of the methods for transporting fluids such as oil and gas is to install a pipeline using four pipes.
かかる方法の一つの問題点はsh管が、腐食することで
ある。One problem with such methods is that the sh tubes corrode.
これまでかかる鋼管の腐食を防止する方法として、種々
の方法が採られている。Various methods have been used to prevent corrosion of steel pipes.
その一つの方法は鋼管の表面を瀝青物で保護することで
ある。しかしてこの方法では瀝青物質層が外的な衝撃に
よって簡単に損傷するという問題がある。One method is to protect the surface of the steel pipe with bituminous material. However, this method has the problem that the bituminous material layer is easily damaged by external impacts.
近年かかる方法の問題を解決する方法として、鋼管面に
ポリエチレン、ポリ塩化ビニルの如きプラスチック類を
被覆する方法が採られている。In recent years, as a method to solve the problems of such methods, a method has been adopted in which the surface of the steel pipe is coated with plastics such as polyethylene and polyvinyl chloride.
プラスチック類を鋼管面に被覆する方法としては、次の
三つの方法が一般的に知られている。The following three methods are generally known for coating the surface of steel pipes with plastics.
1)鋼管を加熱し、この表面に下塗り組成物を塗布する
と共に、この表面に溶融プラスチック類を被覆し、冷却
する方法。1) A method of heating a steel pipe, applying an undercoat composition to the surface, coating the surface with molten plastic, and cooling.
2)予めプラスチック類を円筒形状の熱収縮性パイプに
加工し、これを表面下塗り組成物を塗布した鋼管に装着
し、該パイプを加熱して収縮させ被覆する方法。2) A method in which plastics are processed into a cylindrical heat-shrinkable pipe in advance, this is attached to a steel pipe coated with a surface undercoating composition, and the pipe is heated to shrink and coat the pipe.
3ン予めプラスチック類をテープ状に成形すると共にそ
の一方の表面に接着剤層を形成しておき、これを表面に
下塗り組成物を塗布した鋼管表面にスパイラル状に一部
を重ね合せて巻き付けて被覆する所謂防食テープ工法。3.Preliminarily form a plastic into a tape shape and form an adhesive layer on one surface of the tape, and wrap this in a spiral shape, overlapping some parts, on the surface of a steel pipe whose surface has been coated with an undercoat composition. The so-called anti-corrosion tape coating method.
このようにプラスチック類で保護された被ffE鋼管類
は、前記の瀝青物で保護した被覆鋼管類に比して、防食
効果及び耐用年数等の点に於いて顕著な効果を有する。The ffE steel pipes protected with plastics in this way have remarkable effects in terms of corrosion protection and service life, as compared to the above-mentioned coated steel pipes protected with bituminous materials.
しかし、これ等の方法で使用される下塗り剤または接着
剤層はいずれも熱可塑性樹脂またはゴム系物質であって
、高温では被覆層が軟化し、物理的な衝撃に対し弱くな
って破壊したり、また金属との接着性を失って被覆層が
ずれたり、剥離するなどの欠陥を生じる。そしてこのよ
うな欠陥部分を通じて水及び酸素が侵入し、腐食が生じ
、進行していくという欠点、つまり防食性の低下をきた
すという問題を有する。However, the primer or adhesive layer used in these methods is either a thermoplastic resin or rubber-based material, and at high temperatures the coating layer softens and becomes vulnerable to physical impact, causing it to break. Also, the adhesion with metal is lost, causing defects such as displacement or peeling of the coating layer. The problem is that water and oxygen enter through such defective parts, causing corrosion and progressing, that is, the corrosion resistance deteriorates.
更にはまた、石油や重油等の流体の輸送パイプラインに
於いては通常流体を加圧、加熱して流体の粘度を下げて
輸送効率を向上させており、ゴムや熱可塑性樹脂の如く
耐熱性の劣るプラスチック被覆を施す場合には、使用温
度に限界があるという難点も存在した。プラスチック被
覆のかかる欠点を解決すべく、従来から種々対策が考え
られており、防食テープ工法に於いても次の様な試みも
なされている。たとえば防食テープ工法に於いて、使用
する防食テープの支持体であるプラスチックシートとし
て、より高い軟化点を有するプラスチックシートを使用
し、場合によってはプラスチックシートに耐熱性を有す
る剥離基材を貼り合わせる試みも行われている。この試
みは防食テープの支持体の耐熱性向上に対しては優れた
ものである。Furthermore, in pipelines for transporting fluids such as petroleum and heavy oil, the fluid is usually pressurized and heated to reduce its viscosity and improve transport efficiency. When applying a plastic coating with poor quality, there was also a drawback that there was a limit to the operating temperature. In order to solve these drawbacks of plastic coatings, various countermeasures have been considered in the past, and the following attempts have also been made in anticorrosion tape construction methods. For example, in the anticorrosion tape construction method, a plastic sheet with a higher softening point is used as the support for the anticorrosion tape used, and in some cases, attempts are being made to attach a heat-resistant release base material to the plastic sheet. is also being carried out. This attempt is excellent in improving the heat resistance of the support for anticorrosive tapes.
しかし接着剤層に関しては、これを構成する接着剤成分
たるゴムや熱可塑性樹脂として高温で軟化し難いものを
使用すると、テープを施工する温度通常室温では接着性
を発揮せず、鋼管を加熱しながら施工しなければならな
い。これはテープ工法の利点である作業性、簡便さを多
いに損なうものである。However, if the adhesive layer is made of rubber or thermoplastic resin that does not easily soften at high temperatures, it will not exhibit adhesive properties at room temperature, the temperature at which the tape is applied, and the steel pipe will be heated. Construction must be carried out at the same time. This greatly impairs the workability and simplicity that are the advantages of the tape method.
そこで防食テープの接着剤層にBステージの熱硬化性樹
脂組成物を用いる試みも行われている。Therefore, attempts have been made to use B-stage thermosetting resin compositions in the adhesive layer of anticorrosive tapes.
この試みはパイプライン稼働時の発熱により接着剤層の
硬化を行い防食性能を発現させようというものであるが
、接着剤層に用いる#S硬化性樹脂組成物は通常室温で
数ケ月以上の保存性(可使時間)が必要であり、テープ
巻き付は後パイプライン稼働までの間は接着剤層は殆ん
ど硬化しない。このためこの間にパイプとの接着界面に
水等の腐食物質が侵入し、硬化後の防食性能が不充分な
ものとなる欠点を有していた。This attempt is to cure the adhesive layer using the heat generated during pipeline operation to develop anti-corrosion performance, but the #S curable resin composition used for the adhesive layer usually cannot be stored at room temperature for several months or more. The adhesive layer hardly hardens after the tape is wrapped and until the pipeline is put into operation. Therefore, during this time, corrosive substances such as water enter the adhesive interface with the pipe, resulting in a drawback that the anticorrosion performance after curing becomes insufficient.
本発明が解決しようとする問題点は、高温の14材に対
しても良好な防食性能を発11!シ、且つその施工に際
して特殊な加熱装置を必要としない防食方法を開発する
ことである。The problem to be solved by the present invention is that the present invention exhibits good anti-corrosion performance even against high-temperature materials. Another objective is to develop a corrosion prevention method that does not require a special heating device during its construction.
この問題点は、鋼材表面に二液型常温硬化型エポキシ樹
脂組成物からなる下塗り剤を塗布し、次いでプラスチッ
クシートまたはゴムシートに熱硬化性樹脂組成物を接着
剤層として貼り合わせてなる防食テープを重ね巻きする
ことによって達成される。叩ら本発明は、鋼材表面に、
二液性常温硬化型エポキシ樹脂組成物から成る下塗り剤
を塗布した後に、熱硬化性テープを重ね巻きする鋼材の
防食方法に於いて、核熱硬化性テープが、耐熱性ポリオ
レフィンフィルムの両面に接着性ポリオレフィン層を形
成し、該接着性ポリオレフィン層の一方に常温で粘着性
を有するエポキシ樹脂組成物よりなる接着剤層を形成し
たものであることを特徴とする鋼材の防食方法に係るも
のである。This problem is solved by applying an undercoat consisting of a two-component cold-curing epoxy resin composition to the surface of the steel material, and then laminating a thermosetting resin composition to a plastic sheet or rubber sheet as an adhesive layer. This is achieved by wrapping the . The hammered surface of the steel material according to the present invention,
In the corrosion protection method for steel materials, which involves wrapping a thermosetting tape over and over again after applying an undercoat consisting of a two-component cold-curing epoxy resin composition, the nuclear thermosetting tape adheres to both sides of the heat-resistant polyolefin film. The present invention relates to a method for preventing corrosion of steel materials, characterized in that a polyolefin layer is formed, and an adhesive layer made of an epoxy resin composition that is sticky at room temperature is formed on one side of the adhesive polyolefin layer. .
本発明に於いて使用する防食テープは、使用温度環境下
で軟化しない耐熱性ポリオレフィンフィルムを支持体と
し、また硬化後のガラス転移温度が使用温度環境より高
いエポキシ樹脂組成物を接着層とし、耐熱性ポリオレフ
ィンフィルムと接着剤層との密着性を確保する接着性ポ
リオレフィン層の組み合せにより、熱時にも優れた防食
性能を発揮する。The anticorrosion tape used in the present invention has a heat-resistant polyolefin film as a support that does not soften under the operating temperature environment, and an adhesive layer of an epoxy resin composition whose glass transition temperature after curing is higher than that of the operating temperature environment. The combination of an adhesive polyolefin layer that ensures adhesion between the polyolefin film and the adhesive layer provides excellent anti-corrosion performance even when heated.
また上記防食テープ巻き付けに先立って塗布する下塗り
剤は、二液性常温硬化型エポキシ樹脂組成物からなり、
塗布後数十分から数時間で指触乾燥し、その数倍の時間
の後には完全硬化するのでSVi管表面と下塗り剤の接
着界面に腐食性物質が侵入することもな(、硬化したエ
ポキシ樹脂が本来有する防食性能を十分に発揮する。In addition, the undercoat agent applied prior to wrapping the anticorrosive tape is composed of a two-component room temperature curing epoxy resin composition,
It dries to the touch within several tens of minutes to several hours after application, and is completely cured after several times that amount of time, so corrosive substances will not enter the adhesive interface between the SVi tube surface and the primer (hardened epoxy Fully exhibits the anti-corrosion properties inherent in resin.
また、下塗り剤塗布直後に防食テープを巻き付けるので
、下塗り剤と防食テープの接着剤層のぬれも十分であり
、パイプライン稼働後その熱により防食テープの接着剤
層が硬化した後は下塗り剤層と接着剤層は十分な密着性
を発揮し、高温でも十分な防食性能を発揮するものとな
る。In addition, since the anti-corrosion tape is wrapped immediately after applying the undercoat, the adhesive layer of the undercoat and the anti-corrosion tape is sufficiently wetted, and after the pipeline is in operation, the adhesive layer of the anti-corrosion tape is cured by the heat, and then the undercoat layer is applied. The adhesive layer exhibits sufficient adhesion and exhibits sufficient anticorrosion performance even at high temperatures.
本発明に用いる下塗り剤は、エポキシ樹脂及び(又は)
変性エポキシ樹脂とこれを常温で硬化し得る硬化剤を必
須成分として含み、l・要に応して硬化促進剤、充填剤
、軟化剤、有機溶剤、接着性付与剤、着色剤、熱可塑性
樹脂、ゴム、老化防止剤、カップリング剤等の各種添加
剤を含むものである。The primer used in the present invention includes epoxy resin and/or
Contains a modified epoxy resin and a curing agent that can cure it at room temperature as essential components, and optionally a curing accelerator, filler, softener, organic solvent, adhesion imparting agent, colorant, and thermoplastic resin. , rubber, anti-aging agents, coupling agents, and other additives.
エポキシ樹脂としては、常温で液状のエポキノ(M脂が
好ましいが、必要に応じて常温で固形のエポキシ樹脂を
有機溶剤に溶解して使用することも出来る。使用出来る
エポキシ樹脂、または変性エポキシ樹脂としてはビスフ
ェノール系、ノボラック系の如きグリシジルエーテル型
、グリシジルエステル型、グリシジルアミン型、のエポ
キシ樹脂、或いは両末端にカルボキシル基又はアミン基
を有する液状ゴム等で変性したゴム変性エポキシ樹脂、
エポキシウレタン樹脂、エポキシエステル樹脂、エポキ
シアルキド樹脂、エポキシフェノール樹脂、エポキシア
ルキドメラミン樹脂等があり、これ等の1種を単独で又
は2種以上を併用して使用する。As the epoxy resin, epoxy resin (preferably M resin) which is liquid at room temperature, but if necessary, an epoxy resin which is solid at room temperature can be dissolved in an organic solvent and used.Epoxy resin that can be used or modified epoxy resin is a glycidyl ether type, glycidyl ester type, or glycidyl amine type epoxy resin such as a bisphenol type or a novolac type, or a rubber-modified epoxy resin modified with a liquid rubber having a carboxyl group or an amine group at both ends,
There are epoxy urethane resins, epoxy ester resins, epoxy alkyd resins, epoxy phenol resins, epoxy alkyd melamine resins, etc., and one type of these resins may be used alone or two or more types may be used in combination.
これを硬化させるための常温硬化用硬化剤としては、ポ
リアミドポリアミン、脂肪族ポリアミン、芳香族ポリア
ミン、脂環式ポリアミン等が例示出来る。これ等以外の
硬化剤や硬化促進剤等も勿論使用可能で、たとえば酸無
水物、ポリアミド、スルフィド樹脂、フェノール樹脂、
ユリア樹脂、メラミン樹脂等の初期縮合物、ジンアンジ
アミドをはじめ、触媒的に使用する第3級アミン類、三
弗化硼素−アミンコンプレノクス等も用いることが出来
る。これ等硬化剤は1種または2種以上で使用される。Examples of curing agents for curing at room temperature for curing this include polyamide polyamines, aliphatic polyamines, aromatic polyamines, alicyclic polyamines, and the like. Of course, other curing agents and curing accelerators can also be used, such as acid anhydrides, polyamides, sulfide resins, phenolic resins, etc.
In addition to initial condensates such as urea resin and melamine resin, dianediamide, tertiary amines used as catalysts, boron trifluoride-amine complexes, etc. can also be used. These curing agents may be used alone or in combination of two or more.
また、エポキシ樹脂とその硬化剤の選定にあたってはそ
の硬化物のガラス転移温度が防食施工物の使用温度環境
より高いものが好ましい。In addition, when selecting an epoxy resin and its curing agent, it is preferable that the cured product has a glass transition temperature higher than the temperature environment in which the anticorrosive construction product is used.
本発明の下塗り剤に使用する希釈剤にはグリコール、エ
ステル類等の高沸点溶剤、フタル酸エステル、リン酸エ
ステル類の可塑剤、パインオイル、コールタール類の非
反応性希釈剤、ブチルグリシジルエーテル等のモノエポ
キシ化合物、ジグリンジルエーテル等のポリエポキシ化
合物、スチレン、ジアリルフタレート等のビニル化合物
、グリンジルメタクリレート等のエポキシ化ビニル七ツ
マ−、トリフェニルホスファイト、テトラヒドロフラン
−A、ポリオール、ラクトン等の反応性希釈剤等がある
。Diluents used in the primer of the present invention include high boiling point solvents such as glycols and esters, plasticizers such as phthalates and phosphates, pine oil, non-reactive diluents such as coal tar, and butyl glycidyl ether. monoepoxy compounds such as, polyepoxy compounds such as diglyndyl ether, vinyl compounds such as styrene, diallyl phthalate, epoxidized vinyl salts such as grindyl methacrylate, triphenyl phosphite, tetrahydrofuran-A, polyols, lactones, etc. There are reactive diluents, etc.
下塗り剤に使用する有機溶剤は上記の硬化剤や希釈剤を
溶解し得るもので、且つエポキシ樹脂と相溶性のあるも
のが広く使用される。例えば、トルエン、キシレン、シ
クロヘキサノン、メチルセロソルブ、エチルセロソルブ
、ブチルセロソルブ、セロソルブアセテート、酢酸エチ
ル、メチルエチルケトン、メチルブチルケトン、ジオキ
サン、塩化メチレン、アセトン等より1種または2種以
上を選定し、硬化剤や希釈剤を熔解、分散して下塗り剤
溶液として使用する。下塗り剤溶液中の固形分は、下塗
り剤溶液を刷毛、スプレー等で塗布するのに適した粘度
になるように設定するが、通常10〜100%程度が好
ましい。また下塗り剤溶液の塗布量は、有機溶剤が揮発
した後の下塗り剤層の厚みが0.005〜0.5mm好
ましくはo、or〜0.2mmとなるように調整する。The organic solvent used in the undercoat is one that can dissolve the above-mentioned curing agent and diluent and is compatible with the epoxy resin. For example, select one or more of toluene, xylene, cyclohexanone, methyl cellosolve, ethyl cellosolve, butyl cellosolve, cellosolve acetate, ethyl acetate, methyl ethyl ketone, methyl butyl ketone, dioxane, methylene chloride, acetone, etc., and use a curing agent or diluent. The agent is melted and dispersed and used as a primer solution. The solid content in the undercoat solution is set so that the viscosity is suitable for applying the undercoat solution with a brush, spray, etc., and usually about 10 to 100% is preferable. The amount of the undercoat solution applied is adjusted so that the thickness of the undercoat layer after the organic solvent has evaporated is 0.005 to 0.5 mm, preferably 0.0 to 0.2 mm.
本発明に於いて使用する熱硬化性防食テープは第1図に
示す様に、耐熱性ポリオレフィンフィルム(1)の両面
に、接着性ポリオレフィン層(2)、 (2’)が形
成され、該接着性ポリオレフィン層の一方の層(2)上
に常温で接着性を有するユボキン峙橿脂組成物からなる
接着剤層(3)が形成されて成る構造を有する。As shown in Figure 1, the thermosetting anticorrosive tape used in the present invention has adhesive polyolefin layers (2) and (2') formed on both sides of a heat-resistant polyolefin film (1). It has a structure in which an adhesive layer (3) made of a Yuboquine resin composition having adhesive properties at room temperature is formed on one layer (2) of the polyolefin layer.
本発明の熱硬化性防食テープの接着剤層(3)を形成す
るエポキシ樹脂組成物は、エポキシ樹脂及び(又は)変
性エポキシ樹脂とこれを硬化し得る硬化剤を必須成分と
して含み、必要に応して硬化促進剤、充填剤、軟化剤、
接着性付与剤、着色剤、熱可塑性樹脂、ゴム、老化性防
止剤、カンプリング剤等の各種添加剤を含むものである
。The epoxy resin composition forming the adhesive layer (3) of the thermosetting anticorrosion tape of the present invention contains as essential components an epoxy resin and/or a modified epoxy resin and a curing agent capable of curing this, and optionally curing accelerator, filler, softener,
It contains various additives such as an adhesion promoter, a coloring agent, a thermoplastic resin, a rubber, an anti-aging agent, and a compressing agent.
エポキシ樹脂としては、常温で粘着性を与えるために、
常温で液状のエポキシ樹脂と常温で固形のエポキシ樹脂
を併用するのが好ましい。使用出来るエポキシ樹脂とし
ては、ビスフェノール系、ノボラック系の如きグリシジ
ルエーテル型、グリシジルエステル型、グリシジルアミ
ン型等のエポキシ樹脂がある。また、変性エポキシ樹脂
としてはエポキシウレタン樹脂、エポキシエステル樹脂
、エポキシアルキド樹脂、エポキシフェノール樹脂、エ
ポキシアルキドメラミン樹脂、ゴム変性エポキシ樹脂等
がある。これ等の1種を単独で、又は2種以上を併用し
て使用する。As an epoxy resin, in order to give it tackiness at room temperature,
It is preferable to use an epoxy resin that is liquid at room temperature and an epoxy resin that is solid at room temperature in combination. Epoxy resins that can be used include glycidyl ether type, glycidyl ester type, glycidyl amine type epoxy resins such as bisphenol type and novolac type. Examples of modified epoxy resins include epoxy urethane resins, epoxy ester resins, epoxy alkyd resins, epoxy phenol resins, epoxy alkyd melamine resins, and rubber-modified epoxy resins. One of these may be used alone or two or more may be used in combination.
これ等を硬化させるための硬化剤は、エポキシ樹脂に通
常用いられる硬化剤が適用されるが、その通用部位を考
慮して120℃以下で硬化し得るものが良い0例えばジ
アミノジフェニルアミンの如き芳香族ジアミン、脂肪族
アミンと脂肪族ジカルボン酸の縮合物、ジシアンジアミ
ド、イミダゾール類などのアミン系硬化剤、無水テトラ
ヒドロフタル酸、無水ベンゾフェノンテトラカルボン酸
、無水トリメリット酸などの有fi酸無水物系硬化剤、
フェノール樹脂、ビスフェノールAなどのフェノール系
硬化剤などがあげられる。これ等硬化剤は1種または2
種以上で使用される。As the curing agent for curing these, the curing agent normally used for epoxy resins is applied, but it is preferable to use a curing agent that can be cured at 120°C or less, taking into account the common parts.For example, aromatic curing agents such as diaminodiphenylamine Amine-based curing agents such as diamines, condensates of aliphatic amines and aliphatic dicarboxylic acids, dicyandiamide, imidazoles, etc., fi acid anhydride-based curing agents such as tetrahydrophthalic anhydride, benzophenonetetracarboxylic anhydride, trimellitic anhydride, etc. ,
Examples include phenolic resins and phenolic curing agents such as bisphenol A. These hardening agents are one or two types.
Used by more than one species.
また、エポキシ樹脂とその硬化剤の選定にあたってはそ
の硬化物のガラス転移温度が防食施工物の使用温度環境
より高いものが好ましい。In addition, when selecting an epoxy resin and its curing agent, it is preferable that the cured product has a glass transition temperature higher than the temperature environment in which the anticorrosive construction product is used.
またエポキシ樹脂組成物には必要に応して次の様な各種
添加剤を含有することが出来る。たとえば接着剤層の粘
度調整及び硬化後の強度向上の目的で、炭酸カルシウム
、タルク、アスベスト、けい酸類、カーボンブラック、
コロイダルシリカ等の充填剤が用いられる。配合量は、
エポキシ樹脂100重量部に対して通常O〜300重量
部程度とすれば良い。更に、粘度を下げ、ぬれ性を向上
させる目的で、ブチルグリシツルエーテル、長鎖アルコ
ールのモノグリシジルエーテル等の反応性希釈剤、ジオ
クチルフタレートの如きフタル酸系可塑剤、トリクレン
ジホスフェートの如きりん酸系可塑剤等を配合出来る。Further, the epoxy resin composition can contain various additives such as those described below, if necessary. For example, for the purpose of adjusting the viscosity of the adhesive layer and improving the strength after curing, calcium carbonate, talc, asbestos, silicic acids, carbon black,
A filler such as colloidal silica is used. The compounding amount is
The amount may normally be about 0 to 300 parts by weight per 100 parts by weight of the epoxy resin. Furthermore, in order to lower the viscosity and improve wettability, reactive diluents such as butyl glycytyl ether and monoglycidyl ethers of long-chain alcohols, phthalic acid plasticizers such as dioctyl phthalate, and phosphoric acids such as triclean diphosphate are used. Can be blended with plasticizers, etc.
これ等の量は、エポキシ樹、11100重量部に対して
通常O〜30重量部程度とするのが良い。These amounts are usually about 0 to 30 parts by weight based on 11,100 parts by weight of the epoxy tree.
また接着性ポリオレフィン層(2)、(2′)と接着剤
層(3)の接着性を良好にするために、エポキシ樹脂組
成物に接着性ポリオレフィン層に用いる樹脂を配合する
ことも出来る。この場合の配合量はエポキシ樹脂100
重量部に対して接着性ポリオレフィンをO〜30ffi
量部程度とす乙部程度い。Further, in order to improve the adhesion between the adhesive polyolefin layers (2), (2') and the adhesive layer (3), a resin used for the adhesive polyolefin layer can be blended into the epoxy resin composition. In this case, the blending amount is epoxy resin 100
O~30ffi of adhesive polyolefin based on parts by weight
There are about 1 part and 2 parts.
次に本発明の防食テープの支持体を形成する耐熱性ポリ
オレフィンフィルム(1)は、使用環境温度で軟化しな
いことが必要であり、好ましくはビカツト軟化点(AS
TM−D 1525.1kg荷重)が120℃以上のポ
リプロピレン、ポリエチレンを使用し、これ等のI J
fを単独で、又は2種以上を積層又は混合して使用する
。また上記耐熱性ポリオレフィン層は必要に応じて、着
色剤、酸化防止剤、充填剤等各種添加剤を配合すること
が出来る。また、支持体はテープとしての柔軟性を確保
するため通常5〜1000μm、好ましくは10〜60
0μmの厚みにする。Next, it is necessary that the heat-resistant polyolefin film (1) forming the support of the anticorrosion tape of the present invention does not soften at the usage environment temperature, and preferably the Vikato softening point (AS
TM-D 1525.1kg load) is made of polypropylene or polyethylene with a temperature of 120℃ or higher, and these IJ
f can be used alone, or two or more kinds can be used in a stacked or mixed manner. Further, the heat-resistant polyolefin layer may contain various additives such as colorants, antioxidants, fillers, etc., if necessary. In addition, the support is usually 5 to 1000 μm, preferably 10 to 60 μm in order to ensure flexibility as a tape.
Make the thickness 0 μm.
一般に高い軟化温度を有するプラスチックフィルムはそ
れ自体柔軟性に乏しいものが多く、支持体の厚みを厚く
しすぎるとテープとしての柔軟性が極端に損なわれ、テ
ープ巻き付は作業性の低下等を起こしやすい。In general, many plastic films that have a high softening temperature themselves have poor flexibility, and if the thickness of the support is too thick, the flexibility of the tape will be extremely impaired, and the workability of tape wrapping will decrease. Cheap.
第1図にて説明した通り、本発明の防食テープに於いて
は、該耐熱性ポリオレフィンフィルム(1)は、その両
面に接着性ポリオレフィン層(2)、(2′)を介して
接着剤層(3)が形成されている。As explained in FIG. 1, in the anticorrosion tape of the present invention, the heat-resistant polyolefin film (1) has an adhesive layer on both sides with adhesive polyolefin layers (2) and (2') interposed therebetween. (3) is formed.
耐熱性ポリオレフィンフィルム(1)は透水性が非常に
低く、接着剤層の吸水による劣化を防ぐのに極めて有効
なものであるが、一般に極性が低いことに起因してエポ
キシ樹脂との接着性が劣るものである。このため、耐熱
性ポリオレフィンフィルム(1)の表面に接着処理を施
す必要があり、また、本発明のテープの代表的な使用形
態の一つにパイプ等にランプ巻き(重ね巻き)する使い
方があるため、耐熱性ポリオレフィンフィルム(1)の
両面に変性ポリオレフィン層(2)、 (2′)を形成
する必要がある。Heat-resistant polyolefin film (1) has very low water permeability and is extremely effective in preventing deterioration of the adhesive layer due to water absorption, but it generally has poor adhesion with epoxy resin due to its low polarity. It is inferior. For this reason, it is necessary to apply an adhesive treatment to the surface of the heat-resistant polyolefin film (1), and one of the typical uses of the tape of the present invention is to wrap it around a pipe, etc. Therefore, it is necessary to form modified polyolefin layers (2) and (2') on both sides of the heat-resistant polyolefin film (1).
ここで使用する接着性ポリオレフィン樹脂とはポリオレ
フィン樹脂に不飽和カルボン酸又はその無水物又は不飽
和エポキシ単量体を変成剤としてグラフト重合させた変
成ポリオレフィン樹脂であり、変成剤の量は変成ポリオ
レフィン樹脂1(t。The adhesive polyolefin resin used here is a modified polyolefin resin obtained by graft polymerizing an unsaturated carboxylic acid or its anhydride or an unsaturated epoxy monomer to a polyolefin resin as a modifying agent, and the amount of the modifying agent is determined by the modified polyolefin resin. 1 (t.
重量部に対して0.1〜20重量部好ましくは0.2〜
15重量部更に好ましくは0.5〜lO重量部である。0.1 to 20 parts by weight, preferably 0.2 to 20 parts by weight
The amount is preferably 15 parts by weight, more preferably 0.5 to 10 parts by weight.
上記変成ポリオレフィン樹脂のベースとなるポリオレフ
ィン樹脂にはポリエチレン、ポリプロピレン、エチレン
−エチルアクリレート共重合体、エチレン−ビニルアセ
テート共重合体(熱可塑性共重合ポリエステル)がある
。Polyolefin resins serving as the base of the above-mentioned modified polyolefin resin include polyethylene, polypropylene, ethylene-ethyl acrylate copolymer, and ethylene-vinyl acetate copolymer (thermoplastic copolymerized polyester).
また上記変成剤としての不飽和カルボン酸及びその無水
物としてはアクリル酸、メタクリル酸、マレイン酸、フ
マル酸、無水マレイン酸、無水フマル酸、イタコン酸等
があり、不飽和エポキシ単量体としてはグリシジルアク
リレート、グリシジルメタクリレート、イタコン酸のモ
ノ、ジおよびトリグリシジルエステル、アクリルグリシ
ジルエーテル、3.4−エポキシ−1−ブテン等があり
、好ましくはアクリル酸、メタクリル酸、マレイン酸、
無水マレイシ酸、グリシジルアクリレート、グリシジル
メタクリレート等を用いる。In addition, the unsaturated carboxylic acids and their anhydrides used as the above-mentioned modification agents include acrylic acid, methacrylic acid, maleic acid, fumaric acid, maleic anhydride, fumaric anhydride, itaconic acid, etc., and the unsaturated epoxy monomers include Examples include glycidyl acrylate, glycidyl methacrylate, mono-, di- and triglycidyl esters of itaconic acid, acrylic glycidyl ether, 3,4-epoxy-1-butene, etc., preferably acrylic acid, methacrylic acid, maleic acid,
Malesiic anhydride, glycidyl acrylate, glycidyl methacrylate, etc. are used.
上記接着性ポリオレフィン層(2)、 (2′)の厚み
は、10〜80μm、好ましくは15〜50μm程度で
ある。この厚みがあまりにも小さすぎるとffN !、
性ポリオレフィンフィルム(1)と接着剤層(3)との
密若性が不十分となり、また厚みがあまりにも大きすぎ
る場合は、耐熱性ポリオレフィンフィルム(1)と接着
剤層(3)との間へ水分が侵入しやすくなり高温多湿環
境下での耐久性に聞届を生しることがある。The thickness of the adhesive polyolefin layer (2), (2') is about 10 to 80 μm, preferably about 15 to 50 μm. If this thickness is too small, ffN! ,
If the tightness between the heat-resistant polyolefin film (1) and the adhesive layer (3) is insufficient or the thickness is too large, the gap between the heat-resistant polyolefin film (1) and the adhesive layer (3) may be insufficient. Moisture can easily penetrate into the product, which may affect its durability in hot and humid environments.
また、上記接着性ポリオレフィン樹脂は使用環境温度で
の接着力を確保するためにビカット軟化点が100℃以
上であることが好ましい。Further, it is preferable that the adhesive polyolefin resin has a Vicat softening point of 100° C. or higher to ensure adhesive strength at the operating temperature.
このような構成からなる本発明の熱硬化性テープの製造
方法の一例を示すと次の通りである。先ずテープの支持
体層に関しての製法としては(イ)#JI熱性ポリオレ
フィン樹脂をカレンダー加工や押出成形によりピンホー
ル等の欠陥の無い1層又は2層以上の構造を有するフィ
ルムとし、インフレーション成形等により作った接着性
ポリオレフィンフィルムと貼り合せする方法、(ロ)耐
熱性ポリオレフィン樹脂と接着性ポリオレフィン樹脂と
を多層押出成形法により耐熱性ポリオレフィン層の両側
に接着性ポリオレフィン層を有する多層構造のフィルム
とする方法等があり、これ等の方法によりテープの支持
体層を作成することが出来る。An example of a method for manufacturing the thermosetting tape of the present invention having such a configuration is as follows. First, as for the manufacturing method for the support layer of the tape, (a) #JI thermal polyolefin resin is made into a film having a structure of one or more layers without defects such as pinholes by calendering or extrusion molding, and then by inflation molding etc. A method of laminating the produced adhesive polyolefin film, (b) forming a multilayer structure film having adhesive polyolefin layers on both sides of the heat resistant polyolefin layer by multilayer extrusion molding of the heat resistant polyolefin resin and the adhesive polyolefin resin. There are various methods, and the support layer of the tape can be created using these methods.
次いで、上記テープ支持体層に押出成形で・去、カレン
ダー加工法等によりシート化したエボキノ樹脂組成物屓
を貼り合わせることにより本発明の熱硬化性テープが得
られる。Next, the thermosetting tape of the present invention is obtained by laminating the evoquino resin composition sheet formed into a sheet by extrusion molding, calendering, etc. to the tape support layer.
いずれの場合も、接着剤層の厚みは、良好な接着力を得
るために20μm以上であるのが好ましい。また、テー
プとして使用する際に巻き戻しが困難な場合には、予め
接着剤層に離型用フィルムを貼り付けておき使用時にこ
の離型フィルムを離しながらテープを配管に巻き付ける
のが好ましい。In either case, the thickness of the adhesive layer is preferably 20 μm or more in order to obtain good adhesive strength. If it is difficult to unwind the tape when used as a tape, it is preferable to attach a release film to the adhesive layer in advance and then wrap the tape around the piping while releasing the release film during use.
本発明法を実施する方法については便宜上鋼管をもって
以下に説明する。まず、施工すべき鋼管外面を必要に応
じてプラストやサンドペーパー等で錆落とし及び表面調
整を行う0次に上記下塗り剤をヘラ、刷毛、スプレー等
の適宜な手段により有機溶剤揮発後の厚みがo、 o
o s〜0.5a+m好ましくは0.01〜0.2mm
となるようにi布する。下塗り剤の塗布量が少なすぎる
場合には、ぬれの1氏下、鋼管とテープの接着剤層との
界面での接着低下を生じて好ましくない。また、下塗り
剤の塗布量が多すぎる場合には塗布後の下塗り剤のタレ
、タレによる塗布厚みの不均一、テープ巻き付は後の下
塗り剤の多大なはみだし等を生じ、施工作業上好ましく
ない。For convenience, the method of carrying out the method of the present invention will be explained below using a steel pipe. First, remove rust and surface condition the outer surface of the steel pipe to be constructed using plastic or sandpaper as necessary.Next, apply the above primer using an appropriate means such as a spatula, brush, or spray to reduce the thickness after the organic solvent has evaporated. o, o
o s~0.5a+m preferably 0.01~0.2mm
Cloth i so that If the amount of undercoat applied is too small, adhesion at the interface between the steel pipe and the adhesive layer of the tape will decrease after 1 degree of wetting, which is not preferable. In addition, if too much primer is applied, the primer will sag after application, the thickness of the coating will be uneven due to the sag, and if the tape is wrapped, a large amount of the primer will ooze out, which is undesirable for construction work. .
次に、下塗り剤の有la溶剤が揮発しないうちに、すみ
やかに防食テープを重ね巻きでスパイラル状に巻き付け
る。巻きはじめ、巻き終りはフッソ樹脂テープ等の耐熱
テープで仮り止めしておくのが好ましい。Next, before the laminated solvent of the undercoat agent evaporates, the anticorrosion tape is quickly wrapped in a spiral shape in overlapping layers. It is preferable to temporarily secure the beginning and end of the winding with heat-resistant tape such as fluorine resin tape.
また、地中埋設等、外部から大きな力を受けるような場
合は、上記テープを巻き付けた外側に、更に保護テープ
を巻くことにより、より完全な防食性能が確保される。Furthermore, in cases where a large force is applied from the outside, such as when buried underground, a more complete anti-corrosion performance can be ensured by further wrapping a protective tape around the outside of the tape.
この際の保護テープには、その支持体が、テープとして
取り扱える範囲内で、高い弾性率を有するプラスチック
シートまたはゴムシートであるのが好ましく、その接着
剤層は非極性ゴムを主成分とする粘着性コンパウンドが
好ましい。保護テープは、少なくとも本発明の防食テー
プの接着剤層が硬化するまでの間では、土圧、石等の外
力からテープを保護し、テープのずれ、皺の発生を防止
する効果がある。In this case, the support of the protective tape is preferably a plastic sheet or a rubber sheet with a high elastic modulus within the range that can be handled as a tape, and the adhesive layer is an adhesive mainly composed of non-polar rubber. Compounds are preferred. The protective tape has the effect of protecting the tape from external forces such as earth pressure and stones, and preventing the tape from shifting and wrinkles, at least until the adhesive layer of the anticorrosion tape of the present invention hardens.
以下本発明を実施例により説明する。但し以下部とある
のは重量部を意味するや
実施例1
ユJLL剋配m虜
主剤:
0ビスフエノールA型エポキシ樹脂
(エポキシ当量190)・・・・・・・・100部0テ
トラプロピレングリコール・・・・・・・・ 30Mジ
グリシジルエーテル
0カーボンブラツク・・・・・・・・・・・・・・・・
・・ 3部0微粉末シリカ・・・・・・・・・・・・
・・・・・・・・・・ 1部硬化剤:
02−エチル−4−メチル・・・・・・・・・・・・1
00部イミダゾール
O微粉末タルク・・・・・・・・・・・・・・・・・・
・・・・100f?I+0微扮未シリカ・・・・・・・
・・・・・・・・・・・・・・・ 5部0メチル・エ
チルケトン・・・・・・・・・・・・・・200部彷遺
j−じ乙λl戊
0耐熱性ポリオレフィン層:ビカット軟化点155℃、
メルトフローインデックス0.5g/10分のポリプロ
ピレン、厚さ300.cam。The present invention will be explained below with reference to Examples. However, the following parts refer to parts by weight. Example 1 Main agent: 0 bisphenol A type epoxy resin (epoxy equivalent: 190) 100 parts 0 Tetrapropylene glycol・・・・・・・・・ 30M diglycidyl ether 0 carbon black・・・・・・・・・・・・・・・・
・・3 parts 0 fine powder silica・・・・・・・・・・・・
・・・・・・・・・・・・ 1 part Curing agent: 02-ethyl-4-methyl・・・・・・・・・・・・1
00 parts Imidazole O fine powder talc・・・・・・・・・・・・・・・・・・
...100f? I+0 slightly undressed silica...
・・・・・・・・・・・・・・・ 5 parts 0 Methyl ethyl ketone ・・・・・・・・・・・・・ 200 parts Heat-resistant polyolefin layer : Vicat softening point 155℃,
Polypropylene with melt flow index 0.5g/10min, thickness 300. cam.
0接着性ポリオレフィン層:上記ポリプロピレンに無水
マレイン酸をグラフトした変性ポリプロピレン(ポリプ
ロレン100重量部に対する無水マレイン酸の付加量2
.0部、ビカフト軟化点140℃、メルトフローインデ
ックス0.8g/10分)、厚さ30部m。0 Adhesive polyolefin layer: Modified polypropylene obtained by grafting maleic anhydride onto the above polypropylene (additional amount of maleic anhydride 2 to 100 parts by weight of polyprolene)
.. 0 parts, Vikaft softening point 140°C, melt flow index 0.8 g/10 minutes), thickness 30 parts m.
耐熱性ポリオレフィン層の両面に形成。Formed on both sides of heat-resistant polyolefin layer.
0接着剤層:厚さ200μm
援1月厘皿金供威
0ビスフエノールA型エポキシ樹脂・・・・100部(
エポキシ当量190)
0フエノキシ樹脂・・・・・・・・・・・・・・・・・
・・・ 20部(分子量40000)
0ブチルジグリシジルエーテル・・・・・・・・ 10
部0微粉末タルク・・・・・・・・・・・・・・・・・
・・・・・ 50部0ビニロン短繊維・・・・・・・・
・・・・・・・・・・・・101(太さ20μm、平均
長さ20mm)
0カーボン短繊維・・・・・・・・・・・・・・・・・
・・・ 50部(太さ10μm、平均長さ20mm)
0γ−グリシドキシプロピルメチル・・・・ 1部ジ
ェトキシシラン
0ジシアンジアミド・・・・・・・・・・・・・・・・
・・ 5部O2ウンデシルイミダゾール・・・・・・
・・・・ 1 s外径50mmの鋼管の表面をサンド
ペーパー(#240)で研磨した後、上記配合で調整し
た下塗り剤を、重量比で主剤:硬化剤−100:20と
なるように混合し、ただちに刷毛によりメチルエチルケ
トンが揮発した後の下塗り剤厚みが0.11になるよう
に塗布し、その後上記構成を有する巾50vwのテープ
をハーフラップで重ね巻きし、その巻き終りをフッ素樹
脂テープで仮り止めした。0 Adhesive layer: 200 μm thick Bisphenol A type epoxy resin 100 parts (
Epoxy equivalent: 190) 0 Phenoxy resin・・・・・・・・・・・・・・・・・・
... 20 parts (molecular weight 40,000) 0 Butyl diglycidyl ether 10
Part 0 Fine powder talc・・・・・・・・・・・・・・・・・・
...50 parts 0 vinylon short fibers...
・・・・・・・・・・・・101 (thickness 20μm, average length 20mm) 0 Carbon short fibers・・・・・・・・・・・・・・・・・・
... 50 parts (thickness 10 μm, average length 20 mm) 0 gamma-glycidoxypropylmethyl ... 1 part jetoxysilane 0 dicyandiamide ......
... 5 parts O2 undecyl imidazole...
... 1s After polishing the surface of a steel pipe with an outer diameter of 50 mm with sandpaper (#240), the undercoat prepared according to the above composition was mixed at a weight ratio of main agent: hardening agent - 100:20. Immediately apply the undercoat with a brush so that the thickness of the undercoat after the methyl ethyl ketone has evaporated is 0.11, then wrap a tape with a width of 50 VW with the above structure in a half-wrap, and wrap the end of the wrap with fluororesin tape. I stopped it temporarily.
実施例2
実施例1に於いて、防食テープの構成及び接着剤層の配
合組成を下記とし、その他は実施例1と同様に処理した
。Example 2 In Example 1, the structure of the anticorrosive tape and the composition of the adhesive layer were as shown below, and the other conditions were the same as in Example 1.
肱文之ニブ皇盪底
Q耐熱性ポリオレフィン層:ビカント軟化点128℃1
メルトフローインデックス0.5g/lo分の高密度ポ
リエチレン、厚さ300μ m。Elbow nib sole Q heat-resistant polyolefin layer: Vikant softening point 128℃1
High-density polyethylene with a melt flow index of 0.5 g/lo, thickness 300 μm.
0接着性ポリオレフィン層二上記ポリエチレンにメタク
リル酸をグラフトした変性ポリエチレン(ポリエチレン
100重量部に対するメタクリル酸付加量3.0部、ビ
カフト軟化点120℃、メルトフローインデックス0.
8g/10分)、厚さ30ttm、耐熱性ポリオレフィ
ン層の両面に形成。0 Adhesive Polyolefin Layer 2 Modified polyethylene obtained by grafting methacrylic acid onto the above polyethylene (methacrylic acid addition amount: 3.0 parts per 100 parts by weight of polyethylene, Vikaft softening point: 120°C, melt flow index: 0.
8g/10min), thickness 30ttm, formed on both sides of the heat-resistant polyolefin layer.
0接着剤rr1:厚さ300μm
層の A コ
OビスフェノールA型エポキシ樹脂・・・・ 70部(
エポキシ当量190)
0ビスフエノールA型エポキシ樹脂・・・・ 30部(
エポキシ当量1700)
0両末端にカルボキシル基を有する・・・・ 20部ア
クリロニトリルブタジェン共重合体
(平均分子量4000)
0結晶性シリカ粉末・・・・・・・・・・・・・・・・
・・100部(平均粒度20μm)
0ガラス短繊維・・・・・・・・・・・・・・・・・・
・・・・100部(太さ10μm、平均長さ20mm)
0γ−7ミノプロピルトリメトキシ・・・・ 1部シ
ラン
0アジピン酸ヒドラジド・・・・・・・・・・・・・・
5部02メチルイミダゾール・・・・・・・・・・
・・・・ 1部実施例3
実施例1に於いて防食テープの構成及び接着剤層配合組
成を下記とし、その他は実施際lと同様に処理した。0 Adhesive rr1: 300 μm thick layer of A co-O bisphenol A type epoxy resin...70 parts (
Epoxy equivalent: 190) 0 bisphenol A type epoxy resin... 30 parts (
Epoxy equivalent weight: 1700) 0 Having carboxyl groups at both ends... 20 parts acrylonitrile butadiene copolymer (average molecular weight: 4000) 0 Crystalline silica powder......
・・100 parts (average particle size 20μm) 0 short glass fibers・・・・・・・・・・・・・・・・・・・
...100 parts (thickness 10 μm, average length 20 mm) 0 gamma-7 minopropyl trimethoxy ... 1 part silane 0 adipic acid hydrazide ...
Part 5 02 Methylimidazole・・・・・・・・・
... 1 part Example 3 In Example 1, the structure of the anticorrosion tape and the composition of the adhesive layer were as shown below, and the other treatments were carried out in the same manner as in Example 1.
販食土二1立俳戊
0耐熱性ポリオレフィン層:ビカット軟化点150℃、
メルトフローインデックス0.7g/10分のポリプロ
ピレンとビカツト軟化点128℃、メルトフローインデ
ックス0.5g/10分の高密度ポリエチレンをit比
で1対1に混合したもの。厚み300μm。Heat-resistant polyolefin layer: Vicat softening point 150℃,
A mixture of polypropylene with a melt flow index of 0.7 g/10 min and high-density polyethylene with a Vikatsu softening point of 128°C and a melt flow index of 0.5 g/10 min in an IT ratio of 1:1. Thickness: 300μm.
0接着性ポリオレフィン層:エチレンエチルアクリレー
トにグリシジルメククリレートをグラフトした変成1部
脂(エチレンエチルアクリレート100ii1部に対す
るグリシジルメククリレートの付加量5.0重量部、ビ
カツト軟化点110℃、メルトフローインデックス1.
0g/10分)、厚み20μm、耐熱性ポリオレフィン
層の両αIIに形成。0-adhesive polyolefin layer: modified 1-part resin made by grafting glycidyl meccrylate onto ethylene ethyl acrylate (5.0 parts by weight of glycidyl meccrylate added to 1 part of 100ii ethylene ethyl acrylate, Vikatsu softening point 110°C, melt flow index) 1.
0 g/10 min), 20 μm thick, and a heat-resistant polyolefin layer was formed on both αII.
0接着剤層:J!Xみ300μm
rの 4
0ビスフエノールA型エポキシ樹脂・・・・ 40部(
エポキシ当量190)
0ビスフエノールA型エポキシ樹脂・・・・ 30部(
エポキシ当量1700)
0工ポキシウレタン4M脂・・・・・・・・・・・・・
・ 30部(エポキシ当量600)
O結晶性シリカ粉末・・・・・・・・・・・・・・・・
・・ 80部(平均粒度20μm)
Oガラス短#3+維・・・・・・・・・・・・・・・・
・・・・・100部(太さ10μm、平均長さ20mm
)
OT−アミノプロピルトリメトキシ・・・・ 1部シ
ラン
0ジンアンジアミド・・・・・・・・・・・・・・・・
・・ 3部02−ウンデシルイミダゾール・・・・・
・・・・・ 2部実施例4
実施例1に於いて下塗り剤配合を下記の配合とし、下塗
り剤の混合比を1比で主剤:硬化剤=100:40とし
た。その他は実施例1と同様に処理した。0 adhesive layer: J! 40 bisphenol A type epoxy resin...40 parts (
Epoxy equivalent: 190) 0 bisphenol A type epoxy resin... 30 parts (
Epoxy equivalent: 1700) Zero engineering poxy urethane 4M resin...
・ 30 parts (epoxy equivalent: 600) O crystalline silica powder・・・・・・・・・・・・・・・
・・80 parts (average particle size 20 μm) O glass short #3 + fiber・・・・・・・・・・・・・・・・
...100 copies (thickness 10μm, average length 20mm
) OT-aminopropyltrimethoxy... 1 part silane 0 dianediamide...
・・Part 302-Undecylimidazole・・・・
... 2 parts Example 4 In Example 1, the undercoat was mixed as follows, and the mixing ratio of the undercoat was 1, and the base resin: curing agent = 100:40. The rest was treated in the same manner as in Example 1.
工1立M田金凪虞
主剤:
0ビスフエノールA型エポキシ樹脂・・・・100部(
エポキシ当量190)
0両末端にカルボキシル基を有する・・・・ 10部ア
クリロニトリル−ブタジェン共重合体(平均分子量35
00)
0テトラプロピレングリコールジグ・・・・ 30部リ
シジルエーテル
0カーボンブランク・・・・・・・・・・・・・・・・
・・ 3部硬化剤:
0アミン系硬化剤・・・・・・・・・・・・・・・・・
・・・100部(芳香族アミンと脂肪族アミンの混合物
、活性水素当量40)
0微粉末タルク・・・・・・・・・・・・・・・・・・
・・・・100部0微粉末シリカ・・・・・・・・・・
・・・・・・・・・・・・ 10部0メチルエチルケト
ン・・・・・・・・・・・・・・・・200部比較例1
実施例1に於いて下塗り剤を使用せずにテープを巻き付
けた。その他は実施例1と同様に処理した。Main agent: 0 bisphenol A type epoxy resin...100 parts (
Epoxy equivalent weight 190) 0 having carboxyl groups at both ends... 10 parts acrylonitrile-butadiene copolymer (average molecular weight 35
00) 0 Tetrapropylene glycol jig... 30 parts Lycidyl ether 0 Carbon blank...
・・3-part curing agent: 0 amine-based curing agent・・・・・・・・・・・・・・・・・・
...100 parts (mixture of aromatic amine and aliphatic amine, active hydrogen equivalent: 40) 0 Finely powdered talc ......
...100 parts 0 fine powder silica...
・・・・・・・・・・・・ 10 parts 0 Methyl ethyl ketone ・・・・・・・・・・・・・・ 200 parts Comparative example 1 Example 1 without using a primer I wrapped the tape around it. The rest was treated in the same manner as in Example 1.
比較例2
実施例1に於いて接着性ポリオレフィン層を形成しない
テープを巻き付けた。その他は実施例1と同様に処理し
た。Comparative Example 2 The same tape as in Example 1 was wound without forming an adhesive polyolefin layer. The rest was treated in the same manner as in Example 1.
比較例3
実施例1に於いて接着性ポリオレフィン層を耐熱性ポリ
オレフィン層側の片側のみ(接着剤層側のみ)に形成し
たテープを巻き付けた。その他は実施例1と同様に処理
した。Comparative Example 3 The tape in which the adhesive polyolefin layer was formed only on one side of the heat-resistant polyolefin layer (only on the adhesive layer side) in Example 1 was wound. The rest was treated in the same manner as in Example 1.
比較例4
実施例1に於いて接着剤層を形成しないテープを巻き付
けた。その他は実施例1と同様に処理した。Comparative Example 4 In Example 1, a tape without an adhesive layer was wound. The rest was treated in the same manner as in Example 1.
上記の実施例、並びに比較例の被NS’R管を、10℃
で20時間放置した後、以下の試験を行い第1表に示す
結果を得た。The NS'R tubes of the above examples and comparative examples were heated at 10°C.
After being left for 20 hours, the following tests were conducted and the results shown in Table 1 were obtained.
(1)熱水試験:被覆鋼管を100’C部水中に20日
間浸漬した後、被覆のふくれ
の発生の観察、ピンホールテスター
によりACIOKVでピンホールの
発生の確認を行った。(1) Hot water test: After the coated steel pipe was immersed in 100'C water for 20 days, the occurrence of blistering in the coating was observed, and the occurrence of pinholes was confirmed using ACIOKV using a pinhole tester.
(2)埋設試験:被覆鋼管内に熱媒オイルを流すことが
出来るように鋼管両端に耐熱、
耐圧ホースを取り付け、地下1mに
埋設した後、100℃の熱媒用オイ
ルを1000m l /sinの流量で20日間流し続
けた後、この被覆鋼管を取
り出し、常温に戻した後、被覆のふ
くれ、しわ等の外観変化を観察した。(2) Burial test: Heat-resistant and pressure-resistant hoses were attached to both ends of the steel pipe to allow heat medium oil to flow into the coated steel pipe, and after burying the pipe 1 m underground, heat medium oil at 100°C was poured at a rate of 1000 ml/sin. After continuing to flow at the same flow rate for 20 days, the coated steel pipe was taken out and returned to room temperature, and changes in appearance such as swelling and wrinkles of the coating were observed.
第 1 表
〔発明の効果〕
上記実施例からも明らかな様に本発明の防食方法による
と優れた耐熱性を有する防食処理鋼材が得られる。Table 1 [Effects of the Invention] As is clear from the above examples, according to the anticorrosion method of the present invention, anticorrosion-treated steel materials having excellent heat resistance can be obtained.
第1図は本発明法で使用する熱硬化性防食テープの一例
の断面図である。
(1)・・・・・・・・・・耐熱性ポリオレフィンフィ
ルム(2) (2’)・・・・接着性ポリオレフィン
層(3)・・・・・・・・・・エポキシ樹脂組成物から
成る接着剤層
(以上)FIG. 1 is a sectional view of an example of a thermosetting anticorrosive tape used in the method of the present invention. (1)...Heat-resistant polyolefin film (2) (2')...Adhesive polyolefin layer (3)......From epoxy resin composition Consists of adhesive layer (or more)
Claims (3)
物から成る下塗り剤を塗布した後に、熱硬化性テープを
重ね巻きする鋼材の防食方法に於いて、該熱硬化性テー
プが、耐熱性ポリオレフィンフィルムの両面に接着性ポ
リオレフィン層を形成し、該接着性ポリオレフィン層の
一方に常温で粘着性を有するエポキシ樹脂組成物よりな
る接着剤層を形成したものであることを特徴とする鋼材
の防食方法。(1) In a steel material corrosion prevention method in which a primer consisting of a two-component room-temperature curing epoxy resin composition is applied to the surface of the steel material, a thermosetting tape is repeatedly wrapped around the surface of the steel material, and the thermosetting tape is heat-resistant. An adhesive polyolefin layer is formed on both sides of a polyolefin film, and an adhesive layer made of an epoxy resin composition that is sticky at room temperature is formed on one side of the adhesive polyolefin layer. Corrosion prevention method.
ビカット軟化点を有するポリプロピレン及び(又は)ポ
リエチレンからなり、接着性ポリオレフィン層が100
℃以上のビカット軟化点を有し、また常温で粘着性を有
するエポキシ樹脂組成物がエポキシ樹脂及び(又は)変
性エポキシ樹脂と硬化剤とを必須成分として含有すると
共に120℃以下の温度で硬化可能なものであることを
特徴とする特許請求の範囲第1項記載の鋼材の防食方法
。(2) The heat-resistant polyolefin film is made of polypropylene and/or polyethylene having a Vicat softening point of 120°C or higher, and the adhesive polyolefin layer has a Vicat softening point of 120°C or higher.
An epoxy resin composition that has a Vicat softening point of 120°C or higher and is sticky at room temperature contains an epoxy resin and/or a modified epoxy resin and a curing agent as essential components, and can be cured at a temperature of 120°C or lower. 2. A method for preventing corrosion of steel according to claim 1, characterized in that:
の下塗り剤層の厚みが0.005〜0.5mmであるこ
とを特徴とする特許請求の範囲第1または第2項記載の
防食方法。(3) Corrosion prevention according to claim 1 or 2, characterized in that the thickness of the undercoat layer after the organic solvent contained in the undercoat has volatilized is 0.005 to 0.5 mm. Method.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7530686A JPS62259832A (en) | 1986-03-31 | 1986-03-31 | Method of corrosion-proofing steel material |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7530686A JPS62259832A (en) | 1986-03-31 | 1986-03-31 | Method of corrosion-proofing steel material |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS62259832A true JPS62259832A (en) | 1987-11-12 |
Family
ID=13572433
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7530686A Pending JPS62259832A (en) | 1986-03-31 | 1986-03-31 | Method of corrosion-proofing steel material |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS62259832A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0692529A1 (en) * | 1994-07-13 | 1996-01-17 | Sumitomo Chemical Company, Limited | A method of coating steel with a thermoplastic resin (composition) and a laminated article obtained by said method |
-
1986
- 1986-03-31 JP JP7530686A patent/JPS62259832A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0692529A1 (en) * | 1994-07-13 | 1996-01-17 | Sumitomo Chemical Company, Limited | A method of coating steel with a thermoplastic resin (composition) and a laminated article obtained by said method |
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