CN111705284A - 一种耐腐蚀复合彩涂板及其制备方法 - Google Patents
一种耐腐蚀复合彩涂板及其制备方法 Download PDFInfo
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- CN111705284A CN111705284A CN202010585922.9A CN202010585922A CN111705284A CN 111705284 A CN111705284 A CN 111705284A CN 202010585922 A CN202010585922 A CN 202010585922A CN 111705284 A CN111705284 A CN 111705284A
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- coating
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- 230000007797 corrosion Effects 0.000 title claims abstract description 53
- 238000005260 corrosion Methods 0.000 title claims abstract description 53
- 239000002131 composite material Substances 0.000 title claims abstract description 26
- 238000002360 preparation method Methods 0.000 title abstract description 10
- 239000011248 coating agent Substances 0.000 claims abstract description 63
- 238000000576 coating method Methods 0.000 claims abstract description 63
- 239000000758 substrate Substances 0.000 claims abstract description 52
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 38
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 38
- 239000011701 zinc Substances 0.000 claims abstract description 38
- 239000010410 layer Substances 0.000 claims abstract description 23
- 239000002987 primer (paints) Substances 0.000 claims abstract description 13
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 11
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 10
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 8
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 7
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 7
- 239000005002 finish coating Substances 0.000 claims abstract description 5
- 239000012535 impurity Substances 0.000 claims abstract description 5
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 5
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 5
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 4
- 229910052758 niobium Inorganic materials 0.000 claims abstract description 3
- 238000002161 passivation Methods 0.000 claims description 45
- 239000003973 paint Substances 0.000 claims description 21
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 14
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 12
- 238000005238 degreasing Methods 0.000 claims description 12
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 11
- SOGAXMICEFXMKE-UHFFFAOYSA-N Butylmethacrylate Chemical compound CCCCOC(=O)C(C)=C SOGAXMICEFXMKE-UHFFFAOYSA-N 0.000 claims description 8
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 claims description 8
- 239000000049 pigment Substances 0.000 claims description 8
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims description 7
- QYEXBYZXHDUPRC-UHFFFAOYSA-N B#[Ti]#B Chemical compound B#[Ti]#B QYEXBYZXHDUPRC-UHFFFAOYSA-N 0.000 claims description 7
- 239000005062 Polybutadiene Substances 0.000 claims description 7
- 229910033181 TiB2 Inorganic materials 0.000 claims description 7
- 229910052782 aluminium Inorganic materials 0.000 claims description 7
- APUPEJJSWDHEBO-UHFFFAOYSA-P ammonium molybdate Chemical compound [NH4+].[NH4+].[O-][Mo]([O-])(=O)=O APUPEJJSWDHEBO-UHFFFAOYSA-P 0.000 claims description 7
- 239000000440 bentonite Substances 0.000 claims description 7
- 229910000278 bentonite Inorganic materials 0.000 claims description 7
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 7
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 7
- 239000012188 paraffin wax Substances 0.000 claims description 7
- 229920002857 polybutadiene Polymers 0.000 claims description 7
- 239000011347 resin Substances 0.000 claims description 7
- 229920005989 resin Polymers 0.000 claims description 7
- 239000004408 titanium dioxide Substances 0.000 claims description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 239000010936 titanium Substances 0.000 claims description 6
- 229910052684 Cerium Inorganic materials 0.000 claims description 4
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 claims description 4
- 239000003513 alkali Substances 0.000 claims description 4
- 229940010552 ammonium molybdate Drugs 0.000 claims description 4
- 235000018660 ammonium molybdate Nutrition 0.000 claims description 4
- 239000011609 ammonium molybdate Substances 0.000 claims description 4
- OEIWPNWSDYFMIL-UHFFFAOYSA-N dioctyl benzene-1,4-dicarboxylate Chemical compound CCCCCCCCOC(=O)C1=CC=C(C(=O)OCCCCCCCC)C=C1 OEIWPNWSDYFMIL-UHFFFAOYSA-N 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 229910052746 lanthanum Inorganic materials 0.000 claims description 4
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 239000004814 polyurethane Substances 0.000 claims description 4
- 229920002635 polyurethane Polymers 0.000 claims description 4
- 229910000162 sodium phosphate Inorganic materials 0.000 claims description 4
- 239000001488 sodium phosphate Substances 0.000 claims description 4
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 claims description 4
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 claims description 4
- 238000005406 washing Methods 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- SZVJSHCCFOBDDC-UHFFFAOYSA-N ferrosoferric oxide Chemical compound O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 claims description 2
- HEQBUZNAOJCRSL-UHFFFAOYSA-N iron(ii) chromite Chemical compound [O-2].[O-2].[O-2].[Cr+3].[Fe+3] HEQBUZNAOJCRSL-UHFFFAOYSA-N 0.000 claims description 2
- MOUPNEIJQCETIW-UHFFFAOYSA-N lead chromate Chemical compound [Pb+2].[O-][Cr]([O-])(=O)=O MOUPNEIJQCETIW-UHFFFAOYSA-N 0.000 claims description 2
- 239000011247 coating layer Substances 0.000 claims 2
- AUNAPVYQLLNFOI-UHFFFAOYSA-L [Pb++].[Pb++].[Pb++].[O-]S([O-])(=O)=O.[O-][Cr]([O-])(=O)=O.[O-][Mo]([O-])(=O)=O Chemical compound [Pb++].[Pb++].[Pb++].[O-]S([O-])(=O)=O.[O-][Cr]([O-])(=O)=O.[O-][Mo]([O-])(=O)=O AUNAPVYQLLNFOI-UHFFFAOYSA-L 0.000 claims 1
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims 1
- 239000002344 surface layer Substances 0.000 abstract description 5
- 229910000831 Steel Inorganic materials 0.000 description 26
- 239000010959 steel Substances 0.000 description 26
- 239000000243 solution Substances 0.000 description 19
- 239000002585 base Substances 0.000 description 10
- 239000000203 mixture Substances 0.000 description 8
- 239000011572 manganese Substances 0.000 description 6
- VLKZOEOYAKHREP-UHFFFAOYSA-N methyl pentane Natural products CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 6
- 239000011241 protective layer Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 229910052750 molybdenum Inorganic materials 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 238000005187 foaming Methods 0.000 description 4
- 239000004593 Epoxy Substances 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 230000032683 aging Effects 0.000 description 3
- ZMIGMASIKSOYAM-UHFFFAOYSA-N cerium Chemical compound [Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce] ZMIGMASIKSOYAM-UHFFFAOYSA-N 0.000 description 3
- 238000005536 corrosion prevention Methods 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 3
- 239000005416 organic matter Substances 0.000 description 3
- 230000001590 oxidative effect Effects 0.000 description 3
- 239000011574 phosphorus Substances 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 239000006104 solid solution Substances 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011733 molybdenum Substances 0.000 description 2
- FPSFKBGHBCHTOE-UHFFFAOYSA-M sodium 1-[(3-methyl-5-oxo-1-phenyl-4H-pyrazol-4-yl)diazenyl]-4-sulfonaphthalen-2-olate Chemical compound [Na+].O=C1C(N=NC=2C3=CC=CC=C3C(=CC=2O)S([O-])(=O)=O)C(C)=NN1C1=CC=CC=C1 FPSFKBGHBCHTOE-UHFFFAOYSA-M 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910001335 Galvanized steel Inorganic materials 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 1
- 229910001297 Zn alloy Inorganic materials 0.000 description 1
- GXDVEXJTVGRLNW-UHFFFAOYSA-N [Cr].[Cu] Chemical group [Cr].[Cu] GXDVEXJTVGRLNW-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 229910001567 cementite Inorganic materials 0.000 description 1
- 239000010960 cold rolled steel Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011437 continuous method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000008397 galvanized steel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- KFZAUHNPPZCSCR-UHFFFAOYSA-N iron zinc Chemical compound [Fe].[Zn] KFZAUHNPPZCSCR-UHFFFAOYSA-N 0.000 description 1
- KSOKAHYVTMZFBJ-UHFFFAOYSA-N iron;methane Chemical compound C.[Fe].[Fe].[Fe] KSOKAHYVTMZFBJ-UHFFFAOYSA-N 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Classifications
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
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- C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
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- C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/40—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing molybdates, tungstates or vanadates
- C23C22/42—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing molybdates, tungstates or vanadates containing also phosphates
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- B05D2202/30—Metallic substrate based on refractory metals (Ti, V, Cr, Zr, Nb, Mo, Hf, Ta, W)
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2601/00—Inorganic fillers
- B05D2601/20—Inorganic fillers used for non-pigmentation effect
- B05D2601/24—Titanium dioxide, e.g. rutile
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2602/00—Organic fillers
Abstract
本发明公开了一种耐腐蚀复合彩涂板及其制备方法。该耐腐蚀复合彩涂板包括基板,基板的上表面和下表面由内而外依次设置有镀锌层、底漆涂层、耐腐蚀面漆涂层;其中,所述的基板包括按重量百分比的以下成分:C 0.05%‑0.09%,Si 0.10%‑0.30%,Mn 0.60%‑0.80%,P 0.025%‑0.040%,S≤0.005%,Als 0.01%‑0.03%,N≤0.005%,Ti 0.01‑0.03%,Ni 0.01‑0.03%,Nb 0.02%‑0.04%,其余为Fe和不可避免的微量杂质;所述基板设置镀锌层后进行钝化处理。本发明将复合彩涂板的表层和内层的耐腐蚀性能都进行了提高,大大提高了彩涂板的使用寿命。
Description
技术领域
本发明涉及技术领域,特别是涉及一种耐腐蚀复合彩涂板及其制备方法。
背景技术
彩涂板是将有机涂料涂覆在基板表面得到的产品;彩涂板作为一种复合材料,不仅轻质、美观、强度高、易成型,而且具有良好的耐腐蚀性能,给建筑业、造船业、车辆制造业、家具行业、电气行业等提供一种新型原材料,起到了以钢代木、高效施工、节约能源、防止污染等良好的效果。常规彩涂板以冷轧钢板或镀锌板为基础,经过表面预处理后以连续的方法涂上涂料,经过烘烤和冷却而制成。
现有彩涂板的主要问题一是在于在受到空气中水分、有害气体或盐分作用下,腐蚀速度会加快,使用寿命大大降低。二是在于涂层与基层钢板附着力小且不均匀,会出现易划伤、易脱落的现象,暴露在空气中的部分,极易被腐蚀从而急速降低使用寿命。
发明内容
本发明就是针对上述存在的缺陷而提供一种耐腐蚀复合彩涂板及其制备方法。本发明从基层钢板组成、彩涂板制备到涂层成分等方面进行优化改进,将复合彩涂板的表层和内层的耐腐蚀性能都进行了提高,大大提高了彩涂板的使用寿命。
本发明的一种耐腐蚀复合彩涂板及其制备方法技术方案为,一种耐腐蚀复合彩涂板,包括基板,基板的上表面和下表面由内而外依次设置有镀锌层、底漆涂层、耐腐蚀面漆涂层;
其中,所述的基板包括按重量百分比的以下成分:C 0.05%-0.09%,Si0.10%-0.30%,Mn 0.60%-0.80%,P 0.025%-0.040%,S≤0.005%,Als 0.01%-0.03%,N≤0.005%,Ti 0.01-0.03%,Ni 0.01-0.03%,Nb 0.02%-0.04%,其余为Fe和不可避免的微量杂质;所述基板设置镀锌层后进行钝化处理。
本发明的基板的C含量选择在0.05-0.09%。由于渗碳体相对于碳钢是阴极。因此,当碳含量增加时,增加了阴极数量及面积,相应地其腐蚀电流增加了,因而导致其耐腐蚀性降低。碳含量对热镀锌铝有显著的影响,含碳量愈高,铁-锌合金层容易变厚,使镀锌层粘附性变坏。因此在保证基板力学性能的前提下,需对C含量进行严格的控制,碳含量为0.05-0.09%。
本发明的Si含量0.10%-0.30%。加入一定量的硅可提高基板的强度,但基板中较高的含硅量对会热镀锌铝产生不利影响。必须将硅含量控制在合适的范围内。
本发明的Mn含量0.60%-0.80%。Mn能强化铁素体,而且还固溶增加基板强度。此外,加入锰能防止在热加工时因硫引起脆化,但随着Mn的含量越高,其加工性能将逐渐下降。因此,Mn含量需严格控制。
本发明的P含量0.025%-0.040%。磷对基板的强化使延性很少恶化,且对塑性应变值影响较小。但磷的加入量过多,可能导致磷在晶界的偏析,引起钢的脆化,可焊性变差。因此,P含量0.025%-0.040%。
S的含量越小耐蚀性越好。因此,S含量≤0.005%。
随着Als会导致基板夹杂物数量增多,夹杂物尺寸也将变大,将导致基板镀层附着力、耐蚀性能及冲压加工性能变差。但为了保证钢中N与Al充分结合生成AlN,控制Als0.01%-0.03%。
N与C一样,也是固溶元素。N含量的增加,将导致冲压加工性能变坏,同时,固溶N对于应变时效作用很大,要求N尽量低。综合上述,N含量应≤0.005%。
本发明Ti 0.01-0.03%,微量钛与钢中的C、N结合,形成细小稳定的C、N化物颗粒,在板坯加热过程中可有效阻止奥氏体晶粒的粗化,钛的氮化物在焊接时可以抑制焊接热影响区的晶粒粗化,从而改善基体金属和焊接热影响区的低温韧性。
本发明Ni 0.01-0.03%,镍能有效改善钢的低温韧性和耐腐蚀性能,但随着镍含量的增多,生成成本会显著增加,本发明镍含量控制在0.01-0.03%。
本发明的Nb含量为0.02~0.04%,Nb的作用是细化晶粒,在提高钢强度的同时,改善钢的韧性,提高钢的强度。随钢中Nb含量的增大,强度提高,但塑性降低。
本发明的基板,具有涂层附着力优良、耐腐蚀好的优点,有利于提高彩涂板的使用寿命,降低成本。本发明加入微量Nb等合金,保障了彩涂板的强度,具有强度高、冲压加工性能好、耐腐蚀性优良的特点。
所述的底漆涂层采用改性聚氨酯底漆,涂层厚度为5-15μm。
所述的耐腐蚀面漆涂层涂层厚度为10-25μm。
所述的耐腐蚀面漆涂层涂层所用面漆包括按重量份的以下成分环氧化聚丁二烯树脂20-60、甲基丙烯酸丁酯7-15、乙二胺3-6、对苯二甲酸二辛脂1-3、二氧化钛8-12、二硼化钛2-5、石蜡0.5-2、氧化铝1-2、丙烯酰胺0.5-2、碳化钨5-10、膨润土3-6、2,5-二甲基-2,5二叔丁基过氧基己烷0.5-3、颜料5-10。
本发明的面漆,环氧化聚丁二烯树脂与其他成分的配合提高了彩钢板表面的防腐防护能力,具有很好的耐水性和耐化学腐蚀性,二氧化钛、二硼化钛、氧化铝等成分可以提高面漆强度,减少彩钢板被划伤、损坏的几率,丙烯酰胺、膨润土、石蜡等各种成分的配合,可提高涂层的耐热性能,避免光线及高温天气对彩钢板带来的损耗,避免了腐蚀锈斑,提高了彩钢板的使用寿命。
所述的颜料为铬黄、钼铬红、氧化铁红、氧化铁黑、铜铬黑中的一种。
基板设置镀锌层具体为:将基板置入按重量百分比的以下成分的锌液中:铝3-8%,铈0.01-0.1%,镧0.01-0.1%,余量为锌。
镀锌层的镀层厚度为5-20μm。
基板设置镀锌层后经过脱脂、漂洗工序后进行钝化处理,其中,脱脂工序为1-2次,漂洗工序为2-3次,脱脂用碱液浓度为0.5-2%,温度为50-65℃。
钝化处理选用的钝化液为无铬钝化液。
无铬钝化液包括钼酸铵10g/L-50g/L,磷酸钠5g/L-35g/L,70%硫酸1ml/L-10ml/L,丙二酸的浓度为3g/L-30g/L,pH值3-5;钝化时间15-50s;钝化结束后进行水洗、干燥。
本发明的钝化液中不含有六价格,且稳定性好。经过钝化后得到的钝化膜中含有Mo、P。其中钼酸铵边氧化边成膜,使得钝化膜更致密、更平整;有机物能够与基板通过键合作用在镀层表面生成一层致密的吸附层,起到防护作用,也会使钝化膜的致密性增加。
本发明的镀锌层通过热镀的加工方式附着在基板两面,镀锌层表面光滑,钝化液保护层位于镀锌层表面,由铺在镀锌层两侧表面的钝化液与镀锌层反应生产的稳定保护层。
本发明的有益效果为:本发明从基层钢板组成、彩涂板制备到涂层成分等方面进行优化改进,将复合彩涂板的表层和内层的耐腐蚀性能都进行了提高,大大提高了彩涂板的使用寿命。
具体实施方式:
为了更好地理解本发明,下面用具体实例来详细说明本发明的技术方案,但是本发明并不局限于此。
实施例1
一种耐腐蚀复合彩涂板,包括基板,基板的上表面和下表面由内而外依次设置有镀锌层、底漆涂层、耐腐蚀面漆涂层;
其中,所述的基板包括按重量百分比的以下成分:C 0.06%,Si 0.20%,Mn0.70%,P 0.030%,S≤0.005%,Als 0.02%,N≤0.005%,Ti 0.02%,Ni 0.02%,Nb0.03%,其余为Fe和不可避免的微量杂质;
制得厚度为1.5mm的基板,经检测,抗拉强度Rm为490MPa,屈服强度Rp0.2为455MPa,断后伸长率A80mm为27%。
所述基板设置镀锌层后进行钝化处理。
基板设置镀锌层具体为:将基板置入按重量百分比的以下成分的锌液中:铝6%,铈0.05%,镧0.07%,余量为锌。
镀锌层的镀层厚度为10μm。
基板设置镀锌层后经过脱脂、漂洗工序后进行钝化处理,其中,脱脂工序为2次,漂洗工序为3次,脱脂用碱液浓度为1%,温度为65℃。
钝化处理选用的钝化液为无铬钝化液。
无铬钝化液包括钼酸铵35g/L,磷酸钠15g/L,70%硫酸5ml/L,丙二酸的浓度为20g/L,pH值3-5;钝化时间30s;钝化结束后进行水洗、干燥。
本发明的钝化液中不含有六价格,且稳定性好。经过钝化后得到的钝化膜中含有Mo、P。其中钼酸铵边氧化边成膜,使得钝化膜更致密、更平整;有机物能够与基板通过键合作用在镀层表面生成一层致密的吸附层,起到防护作用,也会使钝化膜的致密性增加。
本发明的镀锌层通过热镀的加工方式附着在基板两面,镀锌层表面光滑,钝化液保护层位于镀锌层表面,由铺在镀锌层两侧表面的钝化液与镀锌层反应生产的稳定保护层。
所述的底漆涂层采用改性聚氨酯底漆,涂层厚度为8μm。
所述的耐腐蚀面漆涂层涂层厚度为20μm。
所述的耐腐蚀面漆涂层涂层所用面漆包括按重量份的以下成分环氧化聚丁二烯树脂50、甲基丙烯酸丁酯10、乙二胺5、对苯二甲酸二辛脂2、二氧化钛10、二硼化钛3、石蜡1、氧化铝1.5、丙烯酰胺1、碳化钨8、膨润土5、2,5-二甲基-2,5二叔丁基过氧基己烷1.5、颜料8。
本发明的面漆,环氧化聚丁二烯树脂与其他成分的配合提高了彩钢板表面的防腐防护能力,具有很好的耐水性和耐化学腐蚀性,二氧化钛、二硼化钛、氧化铝等成分可以提高面漆强度,减少彩钢板被划伤、损坏的几率,丙烯酰胺、膨润土、石蜡等各种成分的配合,可提高涂层的耐热性能,避免光线及高温天气对彩钢板带来的损耗,避免了腐蚀锈斑,提高了彩钢板的使用寿命。
所述的颜料为铜铬黑。
本发明从基层钢板组成、彩涂板制备到涂层成分等方面进行优化改进,将复合彩涂板的表层和内层的耐腐蚀性能都进行了提高,大大提高了彩涂板的使用寿命。
产品耐冲击性(GB/T 1732)为64,耐盐雾(GB/T 1771)达到3600h不起泡、不脱落、无锈蚀;耐湿热(GB/T 1740)涂层完好;耐热性(GB/T 1735)120℃,24h涂层完好;耐酸性(GB/T 9274)5%硫酸,常温,1000h涂层完好;耐120#汽油,60℃(GB/T 1734)1500h涂层完好;面漆铅笔硬度≥HB(GBT6739-2006);QUV老化测试:用UVA340,600小时后,无起泡,开裂、粉化程度不大于GB/T1766中规定的I级,色差小于2.0。
实施例2
一种耐腐蚀复合彩涂板,包括基板,基板的上表面和下表面由内而外依次设置有镀锌层、底漆涂层、耐腐蚀面漆涂层;
其中,所述的基板包括按重量百分比的以下成分:C 0.08%%,Si 0.10%,Mn0.60%%,P 0.040%,S≤0.005%,Als 0.03%,N≤0.005%,Ti 0.03%,Ni 0.01,Nb0.02%,其余为Fe和不可避免的微量杂质;
制得厚度为0.75mm的基板,经检测,抗拉强度Rm为480MPa,屈服强度Rp0.2为450MPa,断后伸长率A80mm为26%。
所述基板设置镀锌层后进行钝化处理。
基板设置镀锌层具体为:将基板置入按重量百分比的以下成分的锌液中:铝8%,铈0.01%,镧0.1%,余量为锌。
镀锌层的镀层厚度为20μm。
基板设置镀锌层后经过脱脂、漂洗工序后进行钝化处理,其中,脱脂工序为1次,漂洗工序为2次,脱脂用碱液浓度为0.5%,温度为65℃。
钝化处理选用的钝化液为无铬钝化液。
无铬钝化液包括钼酸铵50g/L,磷酸钠5g/L,70%硫酸10ml/L,丙二酸的浓度为30g/L,pH值3-5;钝化时间20s;钝化结束后进行水洗、干燥。
本发明的钝化液中不含有六价格,且稳定性好。经过钝化后得到的钝化膜中含有Mo、P。其中钼酸铵边氧化边成膜,使得钝化膜更致密、更平整;有机物能够与基板通过键合作用在镀层表面生成一层致密的吸附层,起到防护作用,也会使钝化膜的致密性增加。
本发明的镀锌层通过热镀的加工方式附着在基板两面,镀锌层表面光滑,钝化液保护层位于镀锌层表面,由铺在镀锌层两侧表面的钝化液与镀锌层反应生产的稳定保护层。
所述的底漆涂层采用改性聚氨酯底漆,涂层厚度为15μm。
所述的耐腐蚀面漆涂层涂层厚度为25μm。
所述的耐腐蚀面漆涂层涂层所用面漆包括按重量份的以下成分环氧化聚丁二烯树脂60、甲基丙烯酸丁酯7、乙二胺6、对苯二甲酸二辛脂3、二氧化钛12、二硼化钛2、石蜡2、氧化铝2、丙烯酰胺2、碳化钨10、膨润土6、2,5-二甲基-2,5二叔丁基过氧基己烷3、颜料10。
本发明的面漆,环氧化聚丁二烯树脂与其他成分的配合提高了彩钢板表面的防腐防护能力,具有很好的耐水性和耐化学腐蚀性,二氧化钛、二硼化钛、氧化铝等成分可以提高面漆强度,减少彩钢板被划伤、损坏的几率,丙烯酰胺、膨润土、石蜡等各种成分的配合,可提高涂层的耐热性能,避免光线及高温天气对彩钢板带来的损耗,避免了腐蚀锈斑,提高了彩钢板的使用寿命。
所述的颜料为钼铬红。
本发明从基层钢板组成、彩涂板制备到涂层成分等方面进行优化改进,将复合彩涂板的表层和内层的耐腐蚀性能都进行了提高,大大提高了彩涂板的使用寿命。
产品耐冲击性(GB/T 1732)为64,耐盐雾(GB/T 1771)达到3600h不起泡、不脱落、无锈蚀;耐湿热(GB/T 1740)涂层完好;耐热性(GB/T 1735)120℃,24h涂层完好;耐酸性(GB/T 9274)5%硫酸,常温,1000h涂层完好;耐120#汽油,60℃(GB/T 1734)1500h涂层完好;面漆铅笔硬度≥HB(GBT6739-2006);QUV老化测试:用UVA340,600小时后,无起泡,开裂、粉化程度不大于GB/T1766中规定的I级,色差小于2.0。
Claims (10)
1.一种耐腐蚀复合彩涂板,其特征在于,包括基板,基板的上表面和下表面由内而外依次设置有镀锌层、底漆涂层、耐腐蚀面漆涂层;
其中,所述的基板包括按重量百分比的以下成分:C 0.05%-0.09%,Si 0.10%-0.30%,Mn 0.60%-0.80%,P 0.025%-0.040%,S≤0.005%,Als 0.01%-0.03%,N≤0.005%,Ti 0.01-0.03%,Ni 0.01-0.03%,Nb 0.02%-0.04%,其余为Fe和不可避免的微量杂质;所述基板设置镀锌层后进行钝化处理。
2.根据权利要求1所述的一种耐腐蚀复合彩涂板,其特征在于,所述的底漆涂层采用改性聚氨酯底漆,涂层厚度为5-15μm。
3.根据权利要求1所述的一种耐腐蚀复合彩涂板,其特征在于,所述的耐腐蚀面漆涂层涂层厚度为10-25μm。
4.根据权利要求1所述的一种耐腐蚀复合彩涂板,其特征在于,所述的耐腐蚀面漆涂层涂层所用面漆包括按重量份的以下成分环氧化聚丁二烯树脂20-60、甲基丙烯酸丁酯7-15、乙二胺3-6、对苯二甲酸二辛脂1-3、二氧化钛8-12、二硼化钛2-5、石蜡0.5-2、氧化铝1-2、丙烯酰胺0.5-2、碳化钨5-10、膨润土3-6、2,5-二甲基-2,5二叔丁基过氧基己烷0.5-3、颜料5-10。
5.根据权利要求4所述的一种耐腐蚀复合彩涂板,其特征在于,所述的颜料为铬黄、钼铬红、氧化铁红、氧化铁黑、铜铬黑中的一种。
6.如权利要求1所述的一种耐腐蚀复合彩涂板的制备方法,其特征在于,基板设置镀锌层具体为:将基板置入按重量百分比的以下成分的锌液中:铝3-8%,铈0.01-0.1%,镧0.01-0.1%,余量为锌。
7.根据权利要求6所述的一种耐腐蚀复合彩涂板的制备方法,其特征在于,镀锌层的镀层厚度为5-20μm。
8.根据权利要求6所述的一种耐腐蚀复合彩涂板的制备方法,其特征在于,基板设置镀锌层后经过脱脂、漂洗工序后进行钝化处理,其中,脱脂工序为1-2次,漂洗工序为2-3次,脱脂用碱液浓度为0.5-2%,温度为50-65℃。
9.根据权利要求8所述的一种耐腐蚀复合彩涂板的制备方法,其特征在于,钝化处理选用的钝化液为无铬钝化液。
10.根据权利要求8所述的一种耐腐蚀复合彩涂板的制备方法,其特征在于,无铬钝化液包括钼酸铵10g/L-50g/L,磷酸钠5g/L-35g/L,70%硫酸1ml/L-10ml/L,丙二酸的浓度为3g/L-30g/L,pH值3-5;钝化时间15-50s;钝化结束后进行水洗、干燥。
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