KR102627440B1 - Whinstone Pattern Coating Composition for Manufacturing Pre-Coated Metal Color Sheet and Color Sheet using the Same - Google Patents
Whinstone Pattern Coating Composition for Manufacturing Pre-Coated Metal Color Sheet and Color Sheet using the Same Download PDFInfo
- Publication number
- KR102627440B1 KR102627440B1 KR1020220053559A KR20220053559A KR102627440B1 KR 102627440 B1 KR102627440 B1 KR 102627440B1 KR 1020220053559 A KR1020220053559 A KR 1020220053559A KR 20220053559 A KR20220053559 A KR 20220053559A KR 102627440 B1 KR102627440 B1 KR 102627440B1
- Authority
- KR
- South Korea
- Prior art keywords
- layer
- basalt
- steel sheet
- color steel
- polyester resin
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 18
- 239000008199 coating composition Substances 0.000 title abstract description 9
- 229910052751 metal Inorganic materials 0.000 title description 2
- 239000002184 metal Substances 0.000 title description 2
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 73
- 239000010959 steel Substances 0.000 claims abstract description 73
- 229920001225 polyester resin Polymers 0.000 claims abstract description 31
- 239000004645 polyester resin Substances 0.000 claims abstract description 31
- 239000000203 mixture Substances 0.000 claims abstract description 30
- 239000000049 pigment Substances 0.000 claims abstract description 29
- 230000009477 glass transition Effects 0.000 claims abstract description 27
- 239000004952 Polyamide Substances 0.000 claims abstract description 25
- 229920002647 polyamide Polymers 0.000 claims abstract description 25
- 239000003960 organic solvent Substances 0.000 claims abstract description 18
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 16
- 239000002253 acid Substances 0.000 claims abstract description 14
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 14
- CJMZLCRLBNZJQR-UHFFFAOYSA-N ethyl 2-amino-4-(4-fluorophenyl)thiophene-3-carboxylate Chemical compound CCOC(=O)C1=C(N)SC=C1C1=CC=C(F)C=C1 CJMZLCRLBNZJQR-UHFFFAOYSA-N 0.000 claims abstract description 13
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims abstract description 12
- 239000004215 Carbon black (E152) Substances 0.000 claims abstract description 10
- 229930195733 hydrocarbon Natural products 0.000 claims abstract description 10
- 150000002430 hydrocarbons Chemical class 0.000 claims abstract description 10
- 229920001296 polysiloxane Polymers 0.000 claims abstract description 7
- 239000010410 layer Substances 0.000 claims description 79
- 239000011247 coating layer Substances 0.000 claims description 24
- 239000011248 coating agent Substances 0.000 claims description 18
- 238000000576 coating method Methods 0.000 claims description 18
- 238000007747 plating Methods 0.000 claims description 18
- NHGMTYQLILICLU-UHFFFAOYSA-N 2-N-methoxy-2-N,4-N,1,2,3,4-hexamethyl-1,3,5-triazine-2,4,6-triamine Chemical compound CNC1(N(C(N(C(=N1)N)C)(N(OC)C)C)C)C NHGMTYQLILICLU-UHFFFAOYSA-N 0.000 claims description 15
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 claims description 13
- -1 white: 15~20% Substances 0.000 claims description 12
- 239000004971 Cross linker Substances 0.000 claims description 10
- 150000002576 ketones Chemical class 0.000 claims description 9
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 8
- 238000003618 dip coating Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 150000002148 esters Chemical class 0.000 claims description 6
- 239000001023 inorganic pigment Substances 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- 239000012860 organic pigment Substances 0.000 claims description 5
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 4
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 4
- 229910052791 calcium Inorganic materials 0.000 claims description 4
- 239000011575 calcium Substances 0.000 claims description 4
- 239000003623 enhancer Substances 0.000 claims description 4
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 4
- 239000006224 matting agent Substances 0.000 claims description 4
- 239000010445 mica Substances 0.000 claims description 4
- 229910052618 mica group Inorganic materials 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- 239000000377 silicon dioxide Substances 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 3
- 229910000861 Mg alloy Inorganic materials 0.000 claims description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 3
- 229910000611 Zinc aluminium Inorganic materials 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- HXFVOUUOTHJFPX-UHFFFAOYSA-N alumane;zinc Chemical compound [AlH3].[Zn] HXFVOUUOTHJFPX-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 238000007739 conversion coating Methods 0.000 claims description 3
- 229910052725 zinc Inorganic materials 0.000 claims description 3
- 239000011701 zinc Substances 0.000 claims description 3
- 239000003973 paint Substances 0.000 abstract description 50
- DVWQHUGSDYKQIV-UHFFFAOYSA-N 2-n-methoxy-2-n-methyl-1,3,5-triazine-2,4,6-triamine Chemical compound CON(C)C1=NC(N)=NC(N)=N1 DVWQHUGSDYKQIV-UHFFFAOYSA-N 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 15
- 239000002904 solvent Substances 0.000 description 14
- 229920005989 resin Polymers 0.000 description 13
- 239000011347 resin Substances 0.000 description 13
- 230000000052 comparative effect Effects 0.000 description 9
- 239000000843 powder Substances 0.000 description 9
- 239000000654 additive Substances 0.000 description 8
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 6
- 239000013530 defoamer Substances 0.000 description 6
- 230000000996 additive effect Effects 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000010422 painting Methods 0.000 description 5
- 238000010998 test method Methods 0.000 description 5
- 238000012545 processing Methods 0.000 description 4
- 229920000877 Melamine resin Polymers 0.000 description 3
- 150000001408 amides Chemical class 0.000 description 3
- JBTWLSYIZRCDFO-UHFFFAOYSA-N ethyl methyl carbonate Chemical compound CCOC(=O)OC JBTWLSYIZRCDFO-UHFFFAOYSA-N 0.000 description 3
- 230000000704 physical effect Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- SLLUHROOFRDQLU-UHFFFAOYSA-N 2-n-butoxy-1,3,5-triazine-2,4,6-triamine Chemical compound CCCCONC1=NC(N)=NC(N)=N1 SLLUHROOFRDQLU-UHFFFAOYSA-N 0.000 description 1
- BLRJSXFWDNMKQT-UHFFFAOYSA-N 2-n-methoxy-1,3,5-triazine-2,4,6-triamine Chemical compound CONC1=NC(N)=NC(N)=N1 BLRJSXFWDNMKQT-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 239000004640 Melamine resin Substances 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000010960 cold rolled steel Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003759 ester based solvent Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000005246 galvanizing Methods 0.000 description 1
- 150000003949 imides Chemical class 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000005453 ketone based solvent Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000002436 steel type Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
-
- 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
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
- B05D5/06—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects
- B05D5/061—Special surface effect
-
- 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
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
-
- 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
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/50—Multilayers
- B05D7/52—Two layers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
- C08K5/0025—Crosslinking or vulcanising agents; including accelerators
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/3467—Heterocyclic compounds having nitrogen in the ring having more than two nitrogen atoms in the ring
- C08K5/3477—Six-membered rings
- C08K5/3492—Triazines
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/3467—Heterocyclic compounds having nitrogen in the ring having more than two nitrogen atoms in the ring
- C08K5/3477—Six-membered rings
- C08K5/3492—Triazines
- C08K5/34922—Melamine; Derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/36—Sulfur-, selenium-, or tellurium-containing compounds
- C08K5/41—Compounds containing sulfur bound to oxygen
- C08K5/42—Sulfonic acids; Derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/20—Diluents or solvents
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- 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
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/26—After-treatment
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- 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
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/34—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the shape of the material to be treated
- C23C2/36—Elongated material
- C23C2/40—Plates; Strips
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- 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
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
- C23C28/32—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- 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
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
- C23C28/34—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates
-
- 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
- B05D2202/00—Metallic substrate
- B05D2202/10—Metallic substrate based on Fe
Abstract
현무암무늬 컬러강판 제조용 도료 조성물 및 이에 의해 제조된 컬러강판이 제공된다.
본 발명의 컬러강판 제조용 도료 조성물은, 중량%로, 수평균 분자량(Mn)이 2,000~3,000이고 유리전이온도(Tg)가 20~30℃, OH기가 60~70mgKOH/g, 산가가 6~10 mgKOH/g인 변성 폴리에스테르 수지: 30~40%, 수평균 분자량(Mn)이 2,000~3,000이고 유리전이온도(Tg)가 -40~-50℃인 SOFT 폴리에스테르 수지: 10~20%, 헥사메틸메톡시멜라민 가교제:5~10%, 디노닐나프탈렌술폰산 경화촉진제: 0.5~1.5%, 안료: 0.5~5%, 탄화수소계 유기용제: 35∼50%, 폴리아마이드 왁스: 0.1~1% 및 실리콘 free 소포제: 0.5~1.0%를 포함한다. A coating composition for manufacturing basalt patterned colored steel sheets and a colored steel sheet manufactured thereby are provided.
The paint composition for manufacturing colored steel sheets of the present invention has a number average molecular weight (Mn) of 2,000 to 3,000 in weight percent, a glass transition temperature (Tg) of 20 to 30°C, an OH group of 60 to 70 mgKOH/g, and an acid value of 6 to 10. Modified polyester resin with mgKOH/g: 30~40%, SOFT polyester resin with number average molecular weight (Mn) of 2,000~3,000 and glass transition temperature (Tg) of -40~-50℃: 10~20%, hex. Methylmethoxymelamine crosslinking agent: 5~10%, dinonylnaphthalenesulfonic acid hardening accelerator: 0.5~1.5%, pigment: 0.5~5%, hydrocarbon organic solvent: 35~50%, polyamide wax: 0.1~1%, and silicone. Free antifoaming agent: Contains 0.5~1.0%.
Description
본 발명은 현무암무늬 피씨엠 컬러강판 제조용 피씨엠 도료 조성물 및 이에 의해 제조된 현무암 컬러강판에 관한 것으로서, 보다 상세하게는, 하도 특성을 지닌 베이스도료를 사용하고, 현무암무늬를 가진 상도를 도장하여 기존에 매트형이나 윙클도료와 다른 고경도 고가공 현무암무늬 도료 조성물 및 이에 의해 제조된 현무암무늬 컬러강판에 관한 것이다.The present invention relates to a PCM paint composition for manufacturing basalt pattern PCM color steel sheets and to basalt color steel sheets manufactured thereby, and more specifically, to use a base paint with base paint properties and apply a top coat with a basalt pattern to the existing coating composition. It relates to a high hardness, highly processed basalt pattern paint composition different from mat type or winkle paint, and a basalt pattern color steel sheet manufactured thereby.
철판에 도료를 도장하는 방식은 도장 후 가공하는 방식과 가공 후 도장하는 방식으로 대별된다. 상기 도장 후 가공한 강판을 피씨엠(Pre-Coated Metal)강판 또는 컬러강판이라 하는데, 여기에 사용되는 도료를 피씨엠 도료라 부르고 있다. 이러한 피씨엠 도료에 의해 도장된 피씨엠 강판은 도장 후에 별도의 가공 과정을 거치므로, 피씨엠 도료는 우수한 가공성과 밀착성을 가질 것이 요구되며, 용도에 따라 도막경도, 내후성, 내식성 등의 조건을 만족할 필요가 있다. The method of applying paint to a steel plate is broadly divided into a method of processing after painting and a method of painting after processing. The steel sheet processed after the above coating is called PCM (Pre-Coated Metal) steel sheet or color steel sheet, and the paint used here is called PCM paint. PCM steel sheets painted with these PCM paints undergo a separate processing process after painting, so PCM paints are required to have excellent processability and adhesion, and must satisfy conditions such as coating hardness, weather resistance, and corrosion resistance depending on the application. There is a need.
한편 상기 가공 후 도장하는 방식의 도료에는 선박용도료, 자동차용도료, 일반공업용도료(분체도료) 등을 들 수 있다. 그런데 이러한 기존의 가공 후 도장방식의 도료(공업용 액상, 분체도료)를 이용하여 함마톤이라는 이름으로 현무암 무늬도료를 도장하고 있었으나, PCM 방식으로는 그런 질감의 무늬를 제조하지 못하였다. 따라서 PCM에서도 함마톤무늬(현무암)의 칼라강판을 생산할 수 있는 기술개발에 대한 요구가 계속되어 오고 있는 실정이다. Meanwhile, paints that are applied after processing include marine paints, automotive paints, and general industrial paints (powder paints). However, basalt pattern paint was being applied under the name of hammertone using the existing post-processing paint (industrial liquid, powder paint), but it was not possible to produce a pattern with that texture using the PCM method. Therefore, there is a continuing demand for technology development that can produce color steel sheets with hammertone patterns (basalt) in PCM as well.
따라서 본 발명은 현무암 무늬 PCM 강판의 제조기술에 관한 것으로서, 하도 특성을 가진 베이스도료와 왁스를 이용한 표면장력 제어로 현무암의 외관 및 질감을 형성할 수 있는 상도도료를 적용하여 기존 액상이나 분체 함마톤강판 대비 보다우수한 가공성 및 경도를 가지는 피씨엠 도료 조성물을 제공함에 그 목적이 있다.Therefore, the present invention relates to a manufacturing technology for basalt-patterned PCM steel sheets, by applying a base paint with base paint properties and a top coat that can form the appearance and texture of basalt by controlling the surface tension using wax, compared to existing liquid or powder hammertone. The purpose is to provide a PCM paint composition with superior processability and hardness compared to steel plates.
또한 본 발명은 베이스 및 상도도료 조성물을 이용하여 제조된 현무암 무늬 컬러 강판을 제공함에 그 목적이 있다. Another object of the present invention is to provide a basalt pattern color steel sheet manufactured using a base and top coating composition.
또한 본 발명에서 이루고자 하는 기술적 과제들은 이상에서 언급한 기술적 과제들에 한정되지 않으며, 언급하지 않은 또 다른 기술적 과제들은 아래의 기재로부터 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에게 명확하게 이해될 수 있을 것이다. In addition, the technical problems to be achieved in the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned can be clearly understood by those skilled in the art from the description below. It could be.
따라서 본 발명의 일 측면은, Therefore, one aspect of the present invention is,
중량%로, 수평균 분자량(Mn)이 2,000~3,000이고 유리전이온도(Tg)가 20~30℃, OH기가 60~70mgKOH/g, 산가가 6~10 mgKOH/g인 변성 폴리에스테르 수지: 30~40%, 수평균 분자량(Mn)이 2,000~3,000이고 유리전이온도(Tg)가 -40~-50℃인 SOFT 폴리에스테르 수지: 10~20%, 헥사메틸메톡시멜라민(HexaMethylMethoxyMelamine) 가교제:5~10%, 디노닐나프탈렌술폰산(DiNonylNaphthaleneSulfonicAcid) 경화촉진제: 0.5~1.5%, 안료:0.5~5%, 탄화수소계 유기용제: 35∼50%, 폴리아마이드 왁스: 0.1~1% 및 실리콘 free 소포제: 0.5~1.0%를 포함하는 현무암무늬 컬러강판 제조용 피씨엠 상도 도료 조성물에 관한 것이다. In weight%, a modified polyester resin with a number average molecular weight (Mn) of 2,000 to 3,000, a glass transition temperature (Tg) of 20 to 30°C, an OH group of 60 to 70 mgKOH/g, and an acid value of 6 to 10 mgKOH/g: 30 ~40%, SOFT polyester resin with number average molecular weight (Mn) of 2,000~3,000 and glass transition temperature (Tg) of -40~-50℃: 10~20%, HexaMethylMethoxyMelamine crosslinker: 5 ~10%, DiNonylNaphthaleneSulfonicAcid curing accelerator: 0.5~1.5%, pigment: 0.5~5%, hydrocarbon organic solvent: 35~50%, polyamide wax: 0.1~1%, and silicone free defoamer: 0.5 It relates to a PCM topcoat composition for manufacturing basalt patterned color steel sheets containing ~1.0%.
상기 폴리아마이드 왁스는 Melting Point 120~140℃, 평균입자 size 30~50㎛인 Powder형 왁스를 이용할 수 있다. The polyamide wax can be a powder type wax with a melting point of 120~140℃ and an average particle size of 30~50㎛.
상기 탄화수소 유기용제에, 알콜계, Ester계, Ketone계 유기 용제를 단독 또는 혼합하여 사용함이 바람직하다. It is preferable to use alcohol-based, ester-based, or ketone-based organic solvents alone or in combination with the hydrocarbon organic solvent.
상기 안료로서 메탈릭, 마이카(펄) 또는 유무기안료를 사용할 수 있다. As the pigment, metallic, mica (pearl), or organic and inorganic pigments can be used.
또한 본 발명은, In addition, the present invention,
소지강판;base steel plate;
상기 소지강판의 적어도 일면에 형성된 용융도금층;A hot-dip coating layer formed on at least one surface of the base steel plate;
상기 용융도금층상에 형성된 하도 겸용 베이스층; 및 A base layer that doubles as an undercoat formed on the hot-dip plating layer; and
상기 하도 겸용 베이스층 상에 형성된 상도도장층을 포함하고,It includes a top coat layer formed on the undercoat base layer,
상기 상도도장층은, 중량%로, 수평균 분자량(Mn)이 2,000~3,000이고 유리전이온도(Tg)가 20~30℃, OH기가 60~70mgKOH/g, 산가가 6~10 mgKOH/g인 변성 폴리에스테르 수지: 50~60%, 수평균 분자량(Mn)이 2,000~3,000이고 유리전이온도(Tg)가 -40~-50℃인 SOFT 폴리에스테르 수지: 20~30%, 헥사메틸메톡시멜라민(HexaMethylMethoxyMelamine) 가교제: 5~10%, 디노닐나프탈렌술폰산(DiNonylNaphthaleneSulfonicAcid) 경화촉진제: 0.5~1.5%, 안료: 0.5~5.0%, 폴리아마이드 왁스: 0.1~1.0% 및 실리콘 free 소포제: 0.5~1.0%를 포함하는 현무암무늬 컬러강판에 관한 것이다. The top coating layer has a number average molecular weight (Mn) of 2,000 to 3,000 in weight percent, a glass transition temperature (Tg) of 20 to 30°C, an OH group of 60 to 70 mgKOH/g, and an acid value of 6 to 10 mgKOH/g. Modified polyester resin: 50~60%, SOFT polyester resin with number average molecular weight (Mn) of 2,000~3,000 and glass transition temperature (Tg) of -40~-50℃: 20~30%, hexamethylmethoxymelamine (HexaMethylMethoxyMelamine) crosslinking agent: 5~10%, DiNonylNaphthaleneSulfonicAcid curing accelerator: 0.5~1.5%, pigment: 0.5~5.0%, polyamide wax: 0.1~1.0%, and silicone free antifoaming agent: 0.5~1.0%. It relates to a basalt patterned color steel sheet including:
상기 하도 겸용 베이스층은, 중량%로, 수평균 분자량(Mn)이 15,000~20,000이고 유리전이온도(Tg)가 5~10℃, OH기가 5~15mgKOH/g, 산가가 3mgKOH/g이하인 변성 폴리에스테르 수지: 60~70%, 헥사메틸메톡시멜라민(HexaMethylMethoxyMelamine) 가교제: 5~10 %, 디노닐나프탈렌술폰산(DiNonylNaphthaleneSulfonicAcid) 경화촉진제: 0.5~1.5%, 백색 포함한 유색안료: 15~20%, 칼슘실리카계 방청안료:1~5%, 소포제,레벨링제,부착증진제 및 소광제: 각 0.1~2 %를 포함하여 조성됨이 바람직하다. The undercoating base layer is a modified polyester having a number average molecular weight (Mn) of 15,000 to 20,000 in weight percent, a glass transition temperature (Tg) of 5 to 10°C, an OH group of 5 to 15 mgKOH/g, and an acid value of 3 mgKOH/g or less. Ester resin: 60~70%, HexaMethylMethoxyMelamine crosslinker: 5~10%, DiNonylNaphthaleneSulfonicAcid curing accelerator: 0.5~1.5%, colored pigments including white: 15~20%, calcium silica It is preferable that the composition includes anti-rust pigment: 1-5%, anti-foaming agent, leveling agent, adhesion enhancer, and matting agent: 0.1-2% each.
상기 용융도금층은 아연도금층, 알루미늄도금층, 아연-알루미늄 합금 도금층 및 또는 아연-알루미늄-마그네슘 합금 도금층 중 하나인 것이 바람직하다. The hot-dip plating layer is preferably one of a zinc plating layer, an aluminum plating layer, a zinc-aluminum alloy plating layer, and a zinc-aluminum-magnesium alloy plating layer.
상기 소지강판과 용융도금층 사이에 인산피막층, 크로메이트층 및 논(non)-크로메이트 화성피막층 중 하나로 이루어진 전처리층을 포함함이 바람직하다. It is preferable to include a pretreatment layer made of one of a phosphoric acid coating layer, a chromate layer, and a non-chromate chemical conversion coating layer between the base steel sheet and the hot-dip coating layer.
상기 하도 겸용 베이스층은 그 건조도막 두께가 10~20㎛일 수 있다. The base layer used as an undercoat may have a dry film thickness of 10 to 20 μm.
상기 상도 도장층은 그 건조도막 두께가 10~30㎛일 수 있다. The top coat layer may have a dry film thickness of 10 to 30 μm.
상기 상도 도장층상에 건조 도막두께가 5~20㎛인 클리어도장층을 형성할 수도 있다. A clear coating layer having a dry coating thickness of 5 to 20 μm may be formed on the top coating layer.
상술한 구성의 본 발명에 따르면, 하도겸용 베이스층에 폴리아마이드 왁스를 포함한 도료를 코팅함으로써 표면장력이 제어된 상도도장층을 형성하여 현무암무늬의 외관 및 질감을 갖는 컬러강판의 제조에 유용한 효과가 있다. According to the present invention of the above-described configuration, a top coating layer with controlled surface tension is formed by coating a paint containing polyamide wax on the base layer for both undercoat and a useful effect in the production of colored steel sheets with a basalt pattern appearance and texture. there is.
또한 본 발명은 종래의 액상이나 분체 함마톤을 도장한 선가공 강판 대비 우세한 가공성을 확보할 수 있으며, 나아가. 경도, 내스래치성 및 내식성 등이 우수한 도장층을 효과적으로 형성할 수 있다.In addition, the present invention can secure superior processability compared to pre-processed steel sheets coated with conventional liquid or powder hammertone, and further. It is possible to effectively form a coating layer with excellent hardness, scratch resistance, and corrosion resistance.
아울러, 본 발명의 현무암무늬 컬러강판은 기존의 작은 윙클로 제조되는 매트(극무광)형이나, 아민과 여러 종류의 필러로 구현되는 윙클도료와 다른 윈스톤무늬를 효과적으로 구현할 수 있는 장점이 있다. In addition, the basalt patterned color steel sheet of the present invention has the advantage of being able to effectively implement a winkle pattern that is different from the existing matte (extremely matte) type manufactured with small winkles or winkle paints implemented with amines and various types of fillers.
도 1은 본 발명의 실시예에 따른 컬러 강판의 단면을 모식적으로 나타낸 그림이다.
도 2는 종래 액상이나 분체 함마톤 도장강판에 대한 표면 사진이다.
도 3은 본 발명의 실시예에 따라 제조된 질감형 컬러강판에 대한 표면 사진이다. Figure 1 is a diagram schematically showing a cross section of a color steel sheet according to an embodiment of the present invention.
Figure 2 is a surface photograph of a conventional liquid or powder hammertone coated steel sheet.
Figure 3 is a surface photograph of a textured color steel sheet manufactured according to an embodiment of the present invention.
이하, 본 발명을 설명한다.Hereinafter, the present invention will be described.
본 발명은 하도겸용 베이스도료에 폴리아마이드 왁스를 포함한 도료를 코팅함으로써 표면장력이 제어된 상도도장층을 형성하여 현무암무늬의 외관 및 질감을 갖는 컬러강판의 제조할 수 있으며, 나아가, 종래의 액상이나 분체 함마톤을 도장한 선가공 강판 대비 우세한 가공성을 확보할 수 있고, 경도, 내스래치성, 내식성 등을 향상시킬 수 있는 컬러강판용 피시엠 상도 도료 조성물을 제공함을 특징으로 한다. The present invention forms a top coating layer with controlled surface tension by coating a paint containing polyamide wax on an undercoating base paint, making it possible to manufacture colored steel sheets with a basalt patterned appearance and texture. Furthermore, it is possible to manufacture colored steel sheets with a basalt pattern appearance and texture by coating a paint containing polyamide wax on an undercoating base paint. It is characterized by providing a PCM topcoat composition for colored steel sheets that can secure superior processability compared to pre-processed steel sheets coated with powder hammertone and improve hardness, scratch resistance, corrosion resistance, etc.
이러한 본 발명의 컬러강판용 피시엠 상도 도료 조성물은, 중량%로, 수평균 분자량(Mn)이 2,000~3,000이고 유리전이온도(Tg)가 20~30℃, OH기가 60~70mgKOH/g, 산가가 6~10 mgKOH/g인 변성 폴리에스테르 수지: 30~40%, 수평균 분자량(Mn)이 2,000~3,000이고 유리전이온도(Tg)가 -40~-50℃인 SOFT 폴리에스테르 수지: 10~20%, 헥사메틸메톡시멜라민(HexaMethylMethoxyMelamine) 가교제:5~10%, 디노닐나프탈렌술폰산(DiNonylNaphthaleneSulfonicAcid) 경화촉진제: 0.5~1.5%, 안료:0.5~5.0%, 탄화수소계 유기용제: 35∼50%, 폴리아마이드 왁스: 0.1~1.0% 및 실리콘 free 소포제: 0.5~1.0%를 포함한다. The PCM topcoat composition for colored steel sheets of the present invention has a number average molecular weight (Mn) of 2,000 to 3,000 in weight percent, a glass transition temperature (Tg) of 20 to 30°C, an OH group of 60 to 70 mgKOH/g, and an acid value of Modified polyester resin with 6~10 mgKOH/g: 30~40%, SOFT polyester resin with number average molecular weight (Mn) of 2,000~3,000 and glass transition temperature (Tg) of -40~-50℃: 10~20 %, HexaMethylMethoxyMelamine crosslinking agent: 5~10%, DiNonylNaphthaleneSulfonicAcid curing accelerator: 0.5~1.5%, pigment: 0.5~5.0%, hydrocarbon organic solvent: 35~50%, poly Contains amide wax: 0.1~1.0% and silicone free defoamer: 0.5~1.0%.
이하, 본 발명에 따른 현무암 무늬형 컬러강판 제조용 피씨엠 상도 도료 조성물의 각 성분에 대하여 상세히 설명한다. 아래에서 "%"는 "중량%"를 의미한다. Hereinafter, each component of the PCM topcoat composition for manufacturing basalt patterned color steel sheet according to the present invention will be described in detail. Below, “%” means “% by weight.”
[수지][profit]
본 발명에 따른 피씨엠 상도 도료 조성물은 변성 폴리에스테르 수지를 포함한다. 구체적으로, 상기 수지는 폴리에스테르 수지로서, 전체 도료 조성물에 대하여, 수평균 분자량(Mn)이 2,000~3,000이고 유리전이온도(Tg)가 20~30℃, OH기가 60~70mgKOH/g, 산가가 6~10 mgKOH/g인 변성 폴리에스테르 수지 30~40%와, 수평균 분자량(Mn)이 2,000~3,000이고 유리전이온도(Tg)가 -40~-50℃인 SOFT 폴리에스테르 수지 10~20%를 혼합하여 사용하는 것이 바람직하다. 만일 상기 SOFT 폴리에스테르 수지 함량이 20%를 초과할 경우 도막의 경도가 취약해지는 단점이 있고, 10% 미만이 되면 도막 유연성 및 가공성이 감소될 수 있다. 또한 주 수지의 수평균 분자량이 2,000 미만이 되면 가공성이 취약해지는 단점이 있고, 3,000을 초과할 경우 현무암 무늬가 불균일해 지는 경향이 있다. 본 발명에서 폴리에스테르 수지는 경도와 가공성의 발란스 등을 위하여 혼합 사용한다. The PCM topcoat composition according to the present invention includes a modified polyester resin. Specifically, the resin is a polyester resin, and with respect to the entire paint composition, the number average molecular weight (Mn) is 2,000 to 3,000, the glass transition temperature (Tg) is 20 to 30°C, the OH group is 60 to 70 mgKOH/g, and the acid value is 30 to 40% of modified polyester resin with 6 to 10 mgKOH/g, and 10 to 20% of SOFT polyester resin with a number average molecular weight (Mn) of 2,000 to 3,000 and a glass transition temperature (Tg) of -40 to -50℃. It is preferable to use a mixture of. If the SOFT polyester resin content exceeds 20%, the hardness of the coating film becomes weak, and if it is less than 10%, coating film flexibility and processability may be reduced. In addition, if the number average molecular weight of the main resin is less than 2,000, processability becomes weak, and if it exceeds 3,000, the basalt pattern tends to become uneven. In the present invention, polyester resins are mixed and used to balance hardness and processability.
[가교제][Cross-linking agent]
가교제는 상기 변성 폴리에스테르수지 성분과 함께 도막을 형성하는 것으로서, 멜라민수지를 사용할 수 있다. 본 발명의 가교제는 메틸메톡시기가 6개인 헥사메틸메톡시멜라민(HMMM:HexaMethylMethoxyMelamine) 수지를 5~10% 사용하는 것이 경화도, 가공성, 경도 측면에서 바람직하다.The crosslinking agent forms a coating film together with the modified polyester resin component, and melamine resin can be used. The crosslinking agent of the present invention preferably uses 5 to 10% of HexaMethylMethoxyMelamine (HMMM) resin, which has six methyl methoxy groups, in terms of degree of cure, processability, and hardness.
멜라민 가교제 중 이미드 멜라민은 경화도가 너무 빨라 파핑(Popping, 도막기포)이 발생하고 가공성에 저해될 수 있고, 부톡시 멜라민은 경화도 저하로 경도에 취약할 수 있어 메톡시 멜라민이 바람직하다. 또한, 5% 미만 사용시 경화도가 낮게 되어 경도, 스크래치성에 저해가 되고, 10% 초과 사용 시 경화도가 높게 되어 가공성에 저해가 되므로 5~10% 범위로 함유됨이 바람직하다.Among melamine crosslinking agents, imide melamine hardens too quickly, causing popping (coat film bubbles) and may impede processability, and butoxy melamine may be vulnerable to hardness due to a decrease in hardness, so methoxy melamine is preferable. In addition, when less than 5% is used, the degree of hardness becomes low, which impairs hardness and scratchability, and when more than 10% is used, the degree of hardness becomes high, which impairs processability, so it is preferable to contain it in the range of 5 to 10%.
[안료] [Pigment]
본 발명에 사용되는 안료는 현무암 무늬를 저해하지 않아야 하므로, 일반적인 유무기안료 보다 메탈릭안료나 MICA(펄)안료가 적합하지만, 용도에 따라 유무기안료도 사용가능하다. 일반적으로 메탈릭안료나 MICA안료는 색상에 따라 0.5~5%가 적당하며, 유무기안료는 3% 미만을 사용하여야 현무암무늬에 저해가 되지 않는다.Since the pigment used in the present invention must not interfere with the basalt pattern, metallic pigments or MICA (pearl) pigments are more suitable than general organic and inorganic pigments, but organic and inorganic pigments can also be used depending on the purpose. Generally, 0.5 to 5% of metallic pigment or MICA pigment is appropriate depending on the color, and less than 3% of organic or inorganic pigment should be used to avoid interfering with the basalt pattern.
[용제][solvent]
용제는 도료 제조시 수지내 포함되어 있는 용제와 후첨으로 투입된 용제를 기본적으로 함유하며, 도료 도장 시 유동성이 부족하거나, 점도가 높아 도장하기 어려울 경우에 도장하기 알맞게 희석하여 점도를 낮추는 역할을 한다. 본 발명의 도료 조성물에 첨가되는 용제는 유기용제이며, 수지 및 기타 성분을 분산시킬 수 있어야 한다. The solvent basically contains the solvent contained in the resin when manufacturing the paint and the solvent added as a post-addition. When applying the paint, when it is difficult to paint due to insufficient fluidity or high viscosity, it serves to lower the viscosity by diluting it appropriately for painting. The solvent added to the coating composition of the present invention is an organic solvent and must be able to disperse the resin and other components.
본 발명에서는 상기 유기용제로서 탄화수소계 유기용제를 이용하며, 이를 전체 도료 조성물에 대하여 35~50% 범위로 함유한다. 보다 바람직하게는, 상기 탄화수소계 유기용제에, 알콜계, Ester계, Ketone계 유기 용제를 단독 또는 혼합하여 사용하는 것이다. In the present invention, a hydrocarbon-based organic solvent is used as the organic solvent, and it is contained in the range of 35 to 50% of the total paint composition. More preferably, the hydrocarbon-based organic solvent is used alone or in combination with an alcohol-based, ester-based, or ketone-based organic solvent.
[첨가제][additive]
상기 도료 조성물의 기본적인 구성요소로는 수지, 안료, 용제이지만, 이들만으로는 도료에 요구되는 많은 성능을 만족시키기 어렵다. 따라서 기타 다양한 첨가제를 이용하여 도료 물성의 개량할 필요가 있으며, 첨가제의 배합량은 적지만 도료에 있어서 아주 중요하다.The basic components of the paint composition include resin, pigment, and solvent, but it is difficult to satisfy many of the performances required for the paint with these alone. Therefore, it is necessary to improve the physical properties of paints by using various other additives, and although the amount of additives is small, they are very important in paints.
일반적으로 첨가제의 종류는 기능과 용도에 따라 나누어지며, 나아가, 도료의 종류에 따라서도 달라지는 경우가 있으므로 도료에 적합한 첨가제를 선택할 필요가 있다.In general, types of additives are divided according to function and purpose, and may also vary depending on the type of paint, so it is necessary to select an additive suitable for the paint.
본 발명에서는 상기 첨가제로 폴리아마이드 왁스를 사용함을 특징으로 한다. 상기 아마이드 왁스 첨가제는 도막 표면에 현무암무늬의 외관 및 질감을 형성하는데 핵심적인 역할을 한다. 상기 아마이드 왁스는 건조 과정 중 Melting Point 이상의 고온에서 열을 받아 Powder 형태가 녹아 표면장력이 높은 기본 도료와 현무암무늬로 뭉쳐짐으로 특유의 현무암 무늬가 발현된다. The present invention is characterized by using polyamide wax as the additive. The amide wax additive plays a key role in forming the appearance and texture of the basalt pattern on the surface of the paint film. The amide wax is heated at a high temperature above the melting point during the drying process, melts the powder form, and agglomerates into a basic paint with high surface tension and a basalt pattern, resulting in a unique basalt pattern.
본 발명에서 상기 폴리아마이드 왁스는 Melting Point 120~140℃, 평균입자size 30~50㎛인 Powder형 왁스를 사용하며 0.1~1.0% 범위로 첨가함이 바람직하다. In the present invention, the polyamide wax is a powder-type wax with a melting point of 120-140°C and an average particle size of 30-50㎛, and is preferably added in the range of 0.1-1.0%.
한편 레벨링제는 현무암무늬 발현에 저해가 됨으로 본 발명에서는 사용하지 않는다.Meanwhile, the leveling agent is not used in the present invention because it inhibits the expression of basalt patterns.
그리고 롤코팅에서 발생되는 기포를 제거하기 위해 사용되는 소포제는 최소량을 사용해야 하며, 본 발명에서는 실리콘(Silicone) free인 Acrylate류의 소포제를 사용하며 0.5~1.0%를 사용함이 바람직하다. Additionally, the minimum amount of defoaming agent used to remove air bubbles generated during roll coating must be used. In the present invention, a silicone-free acrylate type defoaming agent is used, and it is preferable to use 0.5 to 1.0%.
다음으로, 본 발명의 현무암무늬 컬러강판을 설명한다. Next, the basalt patterned color steel sheet of the present invention will be described.
도 1은 본 발명의 실시예에 따른 컬러 강판의 단면을 모식적으로 나타낸 그림이다. Figure 1 is a diagram schematically showing a cross section of a color steel sheet according to an embodiment of the present invention.
도 1에 나타난 바와 같이, 본 발명의 질감형 컬러강판(10)은, 소지 강판(1), 상기 소지 강판의 적어도 일면에 형성된 용융도금층(3), 상기 용융도금층 상에 형성된 하도 겸용 베이스층(5) 및 상기 베이스층 상에 형성된 상도 도장층(7)을 포함한ㄷ다As shown in Figure 1, the textured color steel sheet 10 of the present invention includes a base steel sheet 1, a hot-dip coating layer 3 formed on at least one surface of the base steel sheet, and a base layer ( 5) and a top coat layer (7) formed on the base layer.
또한 본 발명에서는, 상기 용융도금층(3)과 상기 하도 겸용 베이스층(4) 사에에 전처리층(4)을 형성할 수도 있으며, 상기 상도 도장층(7)상에 클리어층(9)을 형성할 수도 있다. In addition, in the present invention, a pretreatment layer (4) may be formed between the hot-dip plating layer (3) and the base layer (4), and a clear layer (9) may be formed on the top coat layer (7). You may.
본 발명의 컬러강판(10)은 먼저, 소지강판(1)을 포함한다. 본 발명에서 상기 소지강판(1)의 특정한 조성 및 종류 등에 제한되지 않으며, 냉연강판 또는 열연강판 등 다양한 강종의 강판을 제한없이 이용할 수 있다. The colored steel sheet 10 of the present invention first includes a base steel sheet 1. In the present invention, there is no limitation to the specific composition and type of the base steel sheet 1, and various steel types such as cold-rolled steel sheets or hot-rolled steel sheets can be used without limitation.
본 발명의 컬러강판(10)은 또한 상기 소지강판(1) 상에 형성된 용융도금층(3)을 포함한다. 본 발명에서 상기 용융도금층(3)은 아연도금층, 알루미늄도금층, 아연-알루미늄 합금 도금층 및 아연-알루미늄-마그네슘 합금 도금층 중 하나 일 수 있다. The colored steel sheet 10 of the present invention also includes a hot-dip coating layer 3 formed on the base steel sheet 1. In the present invention, the hot-dip plating layer 3 may be one of a zinc plating layer, an aluminum plating layer, a zinc-aluminum alloy plating layer, and a zinc-aluminum-magnesium alloy plating layer.
또한 본 발명의 컬러강판(10)은, 선택적으로, 상기 용융도금층(2)상에 형성된 전처리층(4)을 포함할 수 있으며, 본 발명은 이러한 전처리층(4)을 형성하는 구체적인 방법에 제한되지 않는다. 예를 들어, 상기 전처리층(4)은 인산피막층, 크로메이트, 또는 논(non)-크로메이트 화성피막층일 수 있다. In addition, the colored steel sheet 10 of the present invention may optionally include a pretreatment layer 4 formed on the hot-dip galvanizing layer 2, and the present invention is limited to a specific method of forming this pretreatment layer 4. It doesn't work. For example, the pretreatment layer 4 may be a phosphoric acid coating layer, a chromate layer, or a non-chromate chemical conversion coating layer.
이와 같이, 상기 용융도금층(3) 표면에 인산피막, 크로메이트, 또는 논-크로메이트 화성피막을 형성함으로써 소지 강판(1)과 후술하는 하도 도장층(5)과의 밀착력을 높여주고, 제품의 내식성을 향상시키는 역할을 한다. In this way, by forming a phosphoric acid film, chromate, or non-chromate chemical conversion film on the surface of the hot-dip coating layer (3), the adhesion between the base steel sheet (1) and the undercoating layer (5) to be described later is increased, and the corrosion resistance of the product is improved. It plays an improving role.
본 발명에서 상기 전처리층(4)의 두께는 30~90㎎/㎡로 인 것이 바람직하다.In the present invention, the thickness of the pretreatment layer 4 is preferably 30 to 90 mg/m2.
또한 본 발명에 따른 현무암무늬 컬러강판은 상기 용융도금층(3) 또는 전처리층(4)상에 형성된 하도 겸용 베이스층(5)을 포함한다. 상기 하도 겸용 베이스층(5)은, 중량%로, 수평균 분자량(Mn)이 15,000~20,000이고 유리전이온도(Tg)가 5~10℃, OH기가 5~15mgKOH/g, 산가가 3mgKOH/g이하인 변성 폴리에스테르 수지: 60~70%, 헥사메틸메톡시멜라민(HexaMethylMethoxyMelamine) 가교제: 5~10 %, 디노닐나프탈렌술폰산(DiNonylNaphthaleneSulfonicAcid) 경화촉진제: 0.5~1.5%, 백색 포함한 유색안료: 15~20%, 칼슘실리카계 방청안료:1~5%, 소포제,레벨링제,부착증진제 및 소광제: 각 0.1~2 %를 포함하여 조성됨이 바람직하다. In addition, the basalt patterned color steel sheet according to the present invention includes a base layer (5) formed on the hot-dip coating layer (3) or the pretreatment layer (4). The base layer (5), in weight percent, has a number average molecular weight (Mn) of 15,000 to 20,000, a glass transition temperature (Tg) of 5 to 10°C, an OH group of 5 to 15 mgKOH/g, and an acid value of 3 mgKOH/g. Modified polyester resin: 60~70%, HexaMethylMethoxyMelamine crosslinker: 5~10%, DiNonylNaphthaleneSulfonicAcid curing accelerator: 0.5~1.5%, colored pigments including white: 15~20% , Calcium silica-based rust preventive pigment: 1~5%, antifoaming agent, leveling agent, adhesion enhancer, and matting agent: 0.1~2% each.
아울러, 본 발명에서 상기 하도 겸용 베이스(5)의 도막두께는 10~20㎛인 것이 바람직하다.In addition, in the present invention, the coating film thickness of the undercoating base 5 is preferably 10 to 20 μm.
그리고 본 발명의 질감형 컬러강판은 또한 상기 하도 겸용 베이스층(5)상에 형성된 상도 도장층(7)을 포함한다. And the textured color steel sheet of the present invention also includes a top coating layer (7) formed on the base layer (5) for both undercoat and coating.
본 발명에서 상기 상도 도장층(7)은 최종 제품의 외관과 광택도를 부여하고, 최종 제품의 가공성, 내구성, 내식성, 내후성 등 물리적 특성을 결정하는 중요한 역할을 한다.In the present invention, the top coat layer 7 provides the appearance and gloss of the final product and plays an important role in determining physical properties such as processability, durability, corrosion resistance, and weather resistance of the final product.
본 발명에서 상기 상도 도장층(7)은, 중량%로, 수평균 분자량(Mn)이 2,000~3,000이고 유리전이온도(Tg)가 20~30℃, OH기가 60~70mgKOH/g, 산가가 6~10 mgKOH/g인 변성 폴리에스테르 수지: 50~60%, 30~40%, 수평균 분자량(Mn)이 2,000~3,000이고 유리전이온도(Tg)가 -40~-50℃인 SOFT 폴리에스테르 수지: 20~30%, 헥사메틸메톡시멜라민(HexaMethylMethoxyMelamine) 가교제: 5~10%, 디노닐나프탈렌술폰산(DiNonylNaphthaleneSulfonicAcid) 경화촉진제: 0.5~1.5%, 안료: 0.5~5.0%, 폴리아마이드 왁스: 0.1~1.0% 및 실리콘 free 소포제: 0.5~1.0%를 포함하는 것이 바람직하다. In the present invention, the top coat layer 7 has a number average molecular weight (Mn) of 2,000 to 3,000 in weight percent, a glass transition temperature (Tg) of 20 to 30°C, an OH group of 60 to 70 mgKOH/g, and an acid value of 6. Modified polyester resin with ~10 mgKOH/g: 50~60%, 30~40%, SOFT polyester resin with number average molecular weight (Mn) of 2,000~3,000 and glass transition temperature (Tg) of -40~-50℃. : 20~30%, HexaMethylMethoxyMelamine crosslinking agent: 5~10%, DiNonylNaphthaleneSulfonicAcid curing accelerator: 0.5~1.5%, pigment: 0.5~5.0%, polyamide wax: 0.1~1.0 % and silicone-free antifoaming agent: preferably 0.5 to 1.0%.
본 발명에서 상기 상도 도장층(7)을 이루는 조성 성분은 실제상 상술한 상도 도료층의 구성성분과 동일하며, 해당 성분의 첨가 이유 또한 상술한 바와 같다. 다만 본 발명의 상도 도료층에는 유기용매가 다량 포함됨에 비하여, 상기 상도 도장층(7)에는 유기용매가 포함되지 않는다. 왜냐하면 상기 유기용매는 상기 상도 도료층의 코팅 후 경화시 모두 기화되어 버리기 때문이다. 따라서 상기 상도 도장층(7)을 이루는 각 조성성분의 함량은 상술한 상도 도료층 대비 유기용매를 제외한 성분들의 합에 대한 중량비를 나타낸 것이다. In the present invention, the composition of the topcoat layer 7 is substantially the same as the composition of the topcoat layer described above, and the reason for adding the component is also the same as described above. However, while the topcoat layer of the present invention contains a large amount of organic solvent, the topcoat layer 7 does not contain an organic solvent. This is because the organic solvent is all vaporized when the top coat layer is coated and cured. Therefore, the content of each component forming the topcoat layer 7 represents the weight ratio of the sum of the components excluding the organic solvent compared to the above-mentioned topcoat layer.
또한, 상기 상도도장층의 두께는 10~30㎛인 것이 바람직하다. 만일, 상기 상도 도장층의 두께가 10㎛ 미만인 경우에는 무늬가 작아 현무암무늬가 발현되지 않고, 도막경화도,경도,가공성 등이 저하되며, 30㎛ 초과시에는 도막에 기포가 발생할 수 있다. Additionally, the thickness of the top coat layer is preferably 10 to 30 μm. If the thickness of the top coat layer is less than 10㎛, the pattern is small and the basalt pattern is not expressed, and the film hardness, hardness, and workability decrease, and if it exceeds 30㎛, bubbles may be generated in the coating film.
한편 본 발명에서는 상기 상도 도장층(7)의 도장 후 수요가의 요구(무광)에 따라 클리어 도막층(9)을 추가하여 도장할 수도 있으며, 이때, 그 도막두께는 5~20㎛인 것이 바람직하다. Meanwhile, in the present invention, after painting the top coat layer (7), a clear coat layer (9) may be added and painted according to the demand of the customer (matte), and at this time, the thickness of the coat layer is preferably 5 to 20㎛. do.
이하, 실시예를 통하여 본 발명을 상세히 설명한다.Hereinafter, the present invention will be described in detail through examples.
(실시예)(Example)
이하, 본 발명의 목적을 달성하는데, 적합한 도료를 선정하기 위한 종래예, 비교예 및 실시예에 대해 더욱 상세히 살펴보기로 한다.Hereinafter, we will look in more detail at conventional examples, comparative examples, and examples for selecting a suitable paint to achieve the purpose of the present invention.
이때 사용된 소재의 규격 및 시험조건, 시편 제작방법 등은 아래와 같다.The specifications and test conditions of the materials used at this time, specimen production method, etc. are as follows.
가) 소재규격 및 작업조건A) Material specifications and working conditions
- 시험소재 : 0.6T MACOSTA강판(Zinc Magnesium Aluminium Alloy Coated Steel)- Test material: 0.6T MACOSTA steel plate (Zinc Magnesium Aluminum Alloy Coated Steel)
- 전처리 : 90㎎/㎡ 크로메이트- Pretreatment: 90㎎/㎡ chromate
- 건조도막 : 하도겸베이스 13㎛ / 상도 18㎛- Dry film: Base 13㎛ / Top coat 18㎛
- MPT : 하도겸베이스 216℃ / 상도 224℃- MPT: Hadokyeom base 216℃ / top coat 224℃
나) 시편제작방법B) Specimen production method
0.6T MACOSTA강판을 메틸에틸케톤으로 탈지하고, 하도겸베이스층를 건조 도막 15㎛로 바코팅한 후 MPT(Metal Peak Temperature) 216℃로 소부하였다. 그리고 그 위에 하기 표 1의 각각의 도료를 건조도막두께 20㎛가 되도록 바코팅한 후, PMT 224℃로 소부하여 상도 도장층을 갖는 시험시편을 제작하였다. 이때, 각 시험시편에 있어서, 상기 하도베이층은, 중량%로, 수평균 분자량(Mn)이 15,000~20,000이고 유리전이온도(Tg)가 5~10℃, OH기가 5~15mgKOH/g, 산가가 3mgKOH/g이하인 변성 폴리에스테르 수지: 40%, 헥사메틸메톡시멜라민 가교제: 6.7%, 디노닐나프탈렌술폰산 경화촉진제: 1.1%, 백색 포함한 유색안료: 18%, 유기용제:28%, 칼슘실리카계 방청안료:3%, 소포제: 0.5% 레벨링제:1.0%, 부착증진제:0.5 및 소광제: 1%를 포함하는 도료를 이용하여 마련되었다. The 0.6T MACOSTA steel sheet was degreased with methyl ethyl ketone, the base layer was bar-coated with a dry film of 15㎛, and then baked at MPT (Metal Peak Temperature) 216°C. Then, each of the paints in Table 1 below was bar-coated to a dry film thickness of 20㎛, and then baked at PMT 224°C to produce a test specimen with a top coat layer. At this time, in each test specimen, the base layer had a number average molecular weight (Mn) of 15,000 to 20,000 in weight percent, a glass transition temperature (Tg) of 5 to 10°C, an OH group of 5 to 15 mgKOH/g, and an acid value of Modified polyester resin with a value of 3 mgKOH/g or less: 40%, hexamethylmethoxymelamine crosslinker: 6.7%, dinonylnaphthalenesulfonic acid curing accelerator: 1.1%, colored pigments including white: 18%, organic solvent: 28%, calcium silica-based It was prepared using a paint containing anti-rust pigment: 3%, anti-foaming agent: 0.5%, leveling agent: 1.0%, adhesion enhancer: 0.5, and matting agent: 1%.
구체적인 시험편 구성 및 제조방법은 아래와 같다. The specific test specimen composition and manufacturing method are as follows.
(1)종래예(1) Conventional example
MACOSTA강판의 표면에 두께 90㎎/㎡ 크로메이트 전처리를 실시하였다. 그리고 상기 전처리층 위에 전술한 바와 같은 조성을 갖는 하도겸용 베이스도료를 건조도막 두께 13㎛으로 도포한 후, MPT 216℃의 조건으로 이를 건조하였다. 이후, 그 표면에 상도 도료 조성물[수평균 분자량(Mn)이 2,000~3,000이고, 유리전이온도(Tg)가 20~30℃인 폴리에스테르 수지 55중량%, 헥사메틸메톡시멜라민 가교제 8%, 디노닐나프탈렌술폰산 경화촉진제 1%, 안료 1중량%, 용제 40중량 % 및 소포제 함유]을 도포한 후, MPT 224℃의 조건으로 건조하여 건조 도막 두께 18.0㎛의 상도 도장층을 형성하였다. Chromate pretreatment with a thickness of 90 mg/m2 was performed on the surface of the MACOSTA steel sheet. Then, the base paint having the composition as described above was applied on the pretreatment layer to a dry film thickness of 13㎛, and then dried under the conditions of MPT 216°C. Afterwards, a top coating composition was applied to the surface [55% by weight of polyester resin with a number average molecular weight (Mn) of 2,000 to 3,000 and a glass transition temperature (Tg) of 20 to 30°C, 8% by weight of hexamethylmethoxymelamine crosslinker, Dino [Containing 1% by weight of nilnaphthalenesulfonic acid curing accelerator, 1% by weight of pigment, 40% by weight of solvent, and antifoaming agent] was applied and dried under MPT conditions of 224°C to form a top coat layer with a dry film thickness of 18.0㎛.
(2)비교예1(2) Comparative example 1
MACOSTA강판의 표면에 두께 90㎎/㎡ 크로메이트 전처리를 실시하였다. 그리고 상기 전처리층 위에 전술한 바와 같은 조성을 갖는 하도겸용 베이스도료를 건조도막 두께 13㎛으로 도포한 후, MPT 216℃의 조건으로 이를 건조하였다. 이후, 그 표면에 상도 도료 조성물[수평균 분자량(Mn)이 2,000~3,000이고, 유리전이온도(Tg)가 20~30℃인 폴리에스테르 수지 55중량%, 헥사메틸메톡시멜라민 가교제 8%, 디노닐나프탈렌술폰산 경화촉진제 1%, 안료 1중량%, 용제 40중량%, 폴리아마이드 왁스 0.2% 및 소포제 함유]을 도포한 후, MPT 224℃의 조건으로 건조하여 건조 도막 두께 18.0㎛의 상도 도장층을 형성하였다. Chromate pretreatment with a thickness of 90 mg/m2 was performed on the surface of the MACOSTA steel sheet. Then, the base paint having the composition as described above was applied on the pretreatment layer to a dry film thickness of 13㎛, and then dried under the conditions of MPT 216°C. Afterwards, a top coating composition was applied to the surface [55% by weight of polyester resin with a number average molecular weight (Mn) of 2,000 to 3,000 and a glass transition temperature (Tg) of 20 to 30°C, 8% by weight of hexamethylmethoxymelamine crosslinker, Dino After applying [containing 1% of nilnaphthalenesulfonic acid curing accelerator, 1% by weight of pigment, 40% by weight of solvent, 0.2% of polyamide wax and antifoaming agent], it was dried under MPT conditions of 224°C to form a top coat layer with a dry film thickness of 18.0㎛. formed.
(3)비교예2 (3) Comparative example 2
MACOSTA강판의 표면에 두께 90㎎/㎡ 크로메이트 전처리를 실시하였다. 그리고 상기 전처리층 위에 전술한 바와 같은 조성을 갖는 하도겸용 베이스도료를 건조도막 두께 13㎛으로 도포한 후, 이를 MPT 216℃의 조건으로 건조하였다. 이후, 그 표면에 상도도료 조성물[수평균 분자량(Mn)이 2,000~3,000이고, 유리전이온도(Tg)가 20~30℃인 폴리에스테르 수지 40중량%, 수평균 분자량(Mn)이 2,000~3,000이고, 유리전이온도(Tg)가 -40~-50℃인 SOFT 폴리에스테르 수지 15 중량%, 헥사메틸메톡시멜라민 가교제 8%, 디노닐나프탈렌술폰산 경화촉진제 1%, 안료 1중량%, 케톤,에스테르 용제 40중량%, 폴리아마이드 왁스 0.2% 및 소포제 함유]을 도포한 후, MPT 224℃의 조건으로 건조하여 건조 도막 두께 18.0㎛의 상도 도장층을 형성하였다. Chromate pretreatment with a thickness of 90 mg/m2 was performed on the surface of the MACOSTA steel plate. Then, the base paint having the composition as described above was applied on the pretreatment layer to a dry film thickness of 13㎛, and then dried under MPT conditions of 216°C. Afterwards, a topcoat composition [40% by weight of polyester resin with a number average molecular weight (Mn) of 2,000 to 3,000 and a glass transition temperature (Tg) of 20 to 30°C, a number average molecular weight (Mn) of 2,000 to 3,000 is applied to the surface. 15% by weight of SOFT polyester resin with a glass transition temperature (Tg) of -40 to -50℃, 8% hexamethylmethoxymelamine crosslinker, 1% dinonylnaphthalenesulfonic acid curing accelerator, 1% by weight pigment, ketone, ester. Containing 40% by weight of solvent, 0.2% of polyamide wax, and antifoaming agent] was applied and then dried under MPT conditions of 224°C to form a topcoat layer with a dry film thickness of 18.0㎛.
(4)발명예1(4) Invention Example 1
MACOSTA강판의 표면에 두께 90㎎/㎡ 크로메이트 전처리를 실시하였다. 그리고 상기 전처리층 위에 전술한 바와 같은 조성을 갖는 하도겸용 베이스도료를 건조도막 두께 13㎛으로 도포한 후, MPT 216℃의 조건으로 이를 건조하였다. 이후, 그 표면에 상도 도료 조성물[수평균 분자량(Mn)이 2,000~3,000이고, 유리전이온도(Tg)가 20~30℃인 폴리에스테르 수지 40중량%, 수평균 분자량(Mn)이 2,000~3,000이고, 유리전이온도(Tg)가 -40~-50℃인 SOFT 폴리에스테르 수지 15 중량%, 헥사메틸메톡시멜라민 가교제 8%, 디노닐나프탈렌술폰산 경화촉진제 1%, 안료 1 중량%, 케톤,에스테르 용제 20중량%, 하이드로카본 용제 20중량%, 폴리아마이드 왁스 0.2% 및 소포제 함유]을 도포한 후, MPT 224℃의 조건으로 건조하여 건조 도막 두께 18.0㎛의 상도 도장층을 형성하였다. Chromate pretreatment with a thickness of 90 mg/m2 was performed on the surface of the MACOSTA steel sheet. Then, the base paint having the composition as described above was applied on the pretreatment layer to a dry film thickness of 13㎛, and then dried under the conditions of MPT 216°C. Afterwards, a top coat composition [40% by weight of polyester resin with a number average molecular weight (Mn) of 2,000 to 3,000 and a glass transition temperature (Tg) of 20 to 30°C, and a number average molecular weight (Mn) of 2,000 to 3,000 are applied to the surface. and 15% by weight of SOFT polyester resin with a glass transition temperature (Tg) of -40 to -50℃, 8% hexamethylmethoxymelamine crosslinker, 1% dinonylnaphthalenesulfonic acid curing accelerator, 1% by weight pigment, ketone, ester. Containing 20% by weight of solvent, 20% by weight of hydrocarbon solvent, 0.2% of polyamide wax, and antifoaming agent] was applied and dried under MPT conditions of 224°C to form a top coat layer with a dry film thickness of 18.0㎛.
케톤, 에스테르 용제
가교제
경화촉진제
소포제
레벨링제
폴리아미드 왁스 미함유Single molecule resin only
Ketone, ester solvent
crosslinking agent
Hardening accelerator
defoamer
leveling agent
Polyamide wax free
케톤, 에스테르용제
가교제
경화촉진제
소포제
폴리아미드 왁스 0.2%Single molecule resin only
Ketone, ester solvent
crosslinking agent
Hardening accelerator
defoamer
Polyamide wax 0.2%
케톤, 에스테르 용제
가교제
경화촉진제
소포제
폴리아미드 왁스 0.2%SOFT resin mixing
Ketone, ester solvent
crosslinking agent
Hardening accelerator
defoamer
Polyamide wax 0.2%
하이드로카본 용제
가교제
경화촉진제
소포제
폴리아미드 왁스 0.2%SOFT resin mixing
hydrocarbon solvent
crosslinking agent
Hardening accelerator
defoamer
Polyamide wax 0.2%
*표 1에서 X는 열위, △는 보통, ○는 양호, ◎는 우수를 나타냄*In Table 1,
상기 제작된 시편들의 도막 물성 비교 시험 결과를 상기 표 1에 나타내었다. 구체적으로, 상기 제조방법으로 제조된 각각의 현무암무늬 컬러강판에 대해, 광택, 경화도, 가공성, 부착성, 연필경도, 현무암무늬를 평가하여 그 결과를 상기 표 1에 나타내었다. The comparative test results of the coating film properties of the manufactured specimens are shown in Table 1 above. Specifically, for each basalt pattern color steel sheet manufactured by the above manufacturing method, gloss, hardness, processability, adhesion, pencil hardness, and basalt pattern were evaluated, and the results are shown in Table 1 above.
이때, 그 구체적인 물성 평가기준은 아래와 같다. At this time, the specific physical property evaluation criteria are as follows.
광택Polish
ASTM D523 시험방법에 따라 시험판을 수평으로 놓고 광택기로 60°로 3회 측정후 평균값을 기록하였다.According to the ASTM D523 test method, the test plate was placed horizontally and measured three times at 60° with a polisher, and the average value was recorded.
경화도degree of hardening
ASTM D5402 시험방법에 따라 시험판을 수평으로 놓고 한 손으로 고정하고, 나머지 한 손으로는 손가락에 거즈 4~6매 정도를 감아 적당한 양의 용제(METHYL ETHYL KETONE)를 묻혀서 상하로 도막면을 문질러서, 소재의 노출이 있을 때 시험을 종료하고 이때까지의 횟수를 측정하였다.According to the ASTM D5402 test method, place the test panel horizontally and fix it with one hand. With the other hand, wrap about 4 to 6 pieces of gauze around your finger, apply an appropriate amount of solvent (METHYL ETHYL KETONE), and rub the coated surface up and down. The test was terminated when there was exposure of the material, and the number of times until this point was measured.
가공성Processability
KS D 3520 굽힘시험 시험방법에 따라 테스트 시편을 제조한 후, 바이스를 이용하여 180도 T-Bending을 하여 CRACK 유무를 평가하였다.After manufacturing the test specimen according to the KS D 3520 bending test method, the presence or absence of CRACK was evaluated by T-bending 180 degrees using a vise.
부착성Adhesion
STM D3359 시험방법에 따라 평가하였다. 시험편을 1mm간격 # 형태로 cross-cut한 후, TESTER(Erichsen tester)에 놓고 반지름형상의 펀치을 인접시킨후 일정한 깊이(6mm)로 밀어내어 성형부위에 TAPE밀착 후 벗겨내어 도막박리 여부를 관찰하였다.It was evaluated according to the STM D3359 test method. The test piece was cross-cut in the form of # at 1mm intervals, placed on a TESTER (Erichsen tester), adjacent to the radial punch, and then pushed out to a certain depth (6mm). After the tape was adhered to the molded area, it was peeled off and observed for peeling of the coating film.
연필경도pencil hardness
KS D 3520 연필경도시험 시험방법에 따라 평가하였다. 시험판을 수평으로 놓고, 한 손으로 고정하고, 심이 2㎜정도 노출되도록 끝부분이 평활하고 각이 날카롭게 되도록 깎은 연필로 45도 각도로 1㎏의 하중을 가하여 길이가 10cm이상 되도록 선을 5회 반복하여 긋고, 시험부위를 지우개로 지운 후 육안으로 관찰하였다.It was evaluated according to the KS D 3520 pencil hardness test test method. Place the test board horizontally, fix it with one hand, and apply a load of 1kg at a 45-degree angle with a sharpened pencil so that the core is exposed by about 2mm so that the end is smooth and the angle is sharp. Repeat the line 5 times until the length is at least 10cm. Then, the test area was erased with an eraser and observed with the naked eye.
현무암무늬basalt pattern
시험시편을 수평 및 각도를 움직이면서 무늬크기, 무늬의 일정함, 불량현상 유무를 평가하였다.The pattern size, pattern consistency, and presence of defects were evaluated while moving the test specimen horizontally and at an angle.
상기 표 1에 나타난 바와 같이, 본 발명의 주 혼합수지에 가교제, 경화촉진제, 안료, 용제, 폴리아마이드 왁스 및 실리콘 free 소포제가 적정량 혼합된 상도 도료 조성물을 이용하여 상도 도장층을 제조한 발명예1의 경우, 광택, 경화도, 가공성, 부착성, 연필경도, 현무암무늬의 측면에서 모두 우수한 결과를 가져옴을 알 수 있다. As shown in Table 1, Invention Example 1 in which a topcoat layer was manufactured using a topcoat composition in which the main mixed resin of the present invention was mixed with an appropriate amount of crosslinking agent, curing accelerator, pigment, solvent, polyamide wax, and silicone free antifoaming agent. In the case of , it can be seen that excellent results are obtained in terms of gloss, hardness, processability, adhesion, pencil hardness, and basalt pattern.
이에 반하여, 폴리아마이드 왁스가 투입되지 않은 종래예는 일정한 현무암 무늬가 발생하지 않고 CRATER 형태의 외관이 발생하였다. In contrast, in the conventional example in which polyamide wax was not added, a certain basalt pattern was not generated and a CRATER-shaped appearance occurred.
또한 수평균 분자량(Mn)이 2,000~3,000이고, 유리전이온도(Tg)가 20~30℃인 폴리에스테르 수지를 주수지로 이용한 비교예1은 폴리아마이드 왁스가 첨가제로 투입됨에도 불구하고, 가공성에서 2T CRACK이 발생하였다.In addition, Comparative Example 1, which used a polyester resin with a number average molecular weight (Mn) of 2,000 to 3,000 and a glass transition temperature (Tg) of 20 to 30°C as the main resin, had poor processability despite the addition of polyamide wax as an additive. 2T CRACK occurred.
또한 본 발명의 도료 조성에서 또한 본 발명의 도료 조성에서 케톤과 에스테르 용제만으로 구성된 비교예2는 만족스러운 현무암무늬가 발현되지 않았다. In addition, Comparative Example 2, which consists of only ketone and ester solvents in the paint composition of the present invention, did not develop a satisfactory basalt pattern.
상술한 바와 같이, 본 발명의 상도 도료조성물을 이용하여 제조된 발명예1의 컬러강판이 그렇지 못한 종래예 및 비교예1-3 대비 기존 PCM강판으로 구현하지 못했던 현무암무늬의 칼라강판을 효과적으로 제조할 수 있음을 확인할 수 있다. As described above, the color steel sheet of Inventive Example 1 manufactured using the top coating composition of the present invention can effectively manufacture a color steel sheet with a basalt pattern that could not be achieved with the existing PCM steel sheet compared to the conventional examples and Comparative Examples 1-3, which did not use the top coating composition of the present invention. You can confirm that it is possible.
한편 도 2는 종래 액상이나 분체 함마톤 도장강판에 대한 표면 사진이며, 도 3은 본 발명예1에 따라 제조된 질감형 컬러강판에 대한 표면 사진이다. 도 2-3의 비교로부터 알 수 있는 바와 같이, 본 발명의 컬러강판이 종래재 대비 효과적으로 현무암무늬를 구현할 수 있음을 확인할 수 있다. Meanwhile, Figure 2 is a surface photograph of a conventional liquid or powder hammer-tone coated steel sheet, and Figure 3 is a surface photograph of a textured color steel sheet manufactured according to Example 1 of the present invention. As can be seen from the comparison of Figures 2-3, it can be confirmed that the color steel sheet of the present invention can effectively implement a basalt pattern compared to conventional materials.
이상에서 설명한 바와 같이, 본 발명의 상세한 설명에서는 본 발명의 바람직한 실시 예에 관하여 설명하였으나, 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자라면 본 발명의 범주에서 벗어나지 않는 한도 내에서 여러 가지 변형이 가능함은 물론이다. 따라서 본 발명의 권리 범위는 설명된 실시 예에 국한되어 정해져서는 안 되며, 후술하는 청구범위뿐만 아니라, 이와 균등한 것들에 의해 정해져야 한다.As described above, the detailed description of the present invention has described preferred embodiments of the present invention, but those skilled in the art can make various modifications without departing from the scope of the present invention. Of course this is possible. Therefore, the scope of rights of the present invention should not be limited to the described embodiments, but should be determined not only by the claims described later, but also by their equivalents.
Claims (12)
In weight%, a modified polyester resin with a number average molecular weight (Mn) of 2,000 to 3,000, a glass transition temperature (Tg) of 20 to 30°C, an OH group of 60 to 70 mgKOH/g, and an acid value of 6 to 10 mgKOH/g: 30 ~40%, SOFT polyester resin with number average molecular weight (Mn) of 2,000~3,000 and glass transition temperature (Tg) of -40~-50℃: 10~20%, hexamethylmethoxymelamine crosslinker: 5~10% , dinonylnaphthalenesulfonic acid curing accelerator: 0.5 to 1.5%, pigment: 0.5 to 5%, hydrocarbon organic solvent: 35 to 50%, polyamide wax: 0.1 to 1%, and silicone free defoaming agent: 0.5 to 1.0%. PCM topcoat composition for manufacturing basalt patterned color steel sheets.
The PCM topcoat composition according to claim 1, wherein the polyamide wax is a powder-type wax with a melting point of 120-140°C and an average particle size of 30-50㎛.
The PCM topcoat composition according to claim 1, wherein an alcohol-based, ester-based, or ketone-based organic solvent is used alone or in combination with the hydrocarbon-based organic solvent.
The PCM topcoat composition according to claim 1, wherein metallic, mica (pearl) or organic/inorganic pigments are used as the pigment.
상기 소지강판의 적어도 일면에 형성된 용융도금층;
상기 용융도금층 상에 형성된 하도 겸용 베이스층; 및
상기 하도 겸용 베이스층 상에 형성된 상도 도장층을 포함하고,
상기 상도 도장층은, 중량%로, 수평균 분자량(Mn)이 2,000~3,000이고 유리전이온도(Tg)가 20~30℃, OH기가 60~70mgKOH/g, 산가가 6~10 mgKOH/g인 변성 폴리에스테르 수지: 50~60%, 수평균 분자량(Mn)이 2,000~3,000이고 유리전이온도(Tg)가 -40~-50℃인 SOFT 폴리에스테르 수지: 20~30%, 헥사메틸메톡시멜라민 가교제: 5~10%, 디노닐나프탈렌술폰산 경화촉진제: 0.5~1.5%, 안료: 0.5~5.0%, 폴리아마이드 왁스: 0.1~1.0% 및 실리콘 free 소포제: 0.5~1.0%를 포함하는 현무암무늬 컬러강판.
base steel plate;
A hot-dip coating layer formed on at least one surface of the base steel plate;
A base layer that doubles as an undercoat formed on the hot-dip plating layer; and
It includes a top coat coating layer formed on the base layer for both undercoat and
The top coat layer has a number average molecular weight (Mn) of 2,000 to 3,000 in weight percent, a glass transition temperature (Tg) of 20 to 30°C, an OH group of 60 to 70 mgKOH/g, and an acid value of 6 to 10 mgKOH/g. Modified polyester resin: 50~60%, SOFT polyester resin with number average molecular weight (Mn) of 2,000~3,000 and glass transition temperature (Tg) of -40~-50℃: 20~30%, hexamethylmethoxymelamine Basalt patterned color steel sheet containing crosslinking agent: 5~10%, dinonylnaphthalenesulfonic acid hardening accelerator: 0.5~1.5%, pigment: 0.5~5.0%, polyamide wax: 0.1~1.0%, and silicone free antifoaming agent: 0.5~1.0%. .
The method of claim 5, wherein the undercoating base layer has a number average molecular weight (Mn) of 15,000 to 20,000 in weight percent, a glass transition temperature (Tg) of 5 to 10°C, an OH group of 5 to 15 mgKOH/g, and an acid value of Modified polyester resin less than 3mgKOH/g: 60~70%, hexamethylmethoxymelamine crosslinker: 5~10%, dinonylnaphthalenesulfonic acid hardening accelerator: 0.5~1.5%, colored pigments including white: 15~20%, calcium silica Basalt-patterned color steel sheet containing anti-rust pigments: 1~5%, antifoaming agent, leveling agent, adhesion enhancer, and matting agent: 0.1~2% each.
The basalt pattern color steel sheet according to claim 5, wherein the polyamide wax is a powder-type polyamide wax with a melting point of 120~140℃ and an average particle size of 30~50um.
The method of claim 5, wherein the hot-dip plating layer is one of a zinc plating layer, an aluminum plating layer, a zinc-aluminum alloy plating layer, and a zinc-aluminum-magnesium alloy plating layer, and a basalt pattern color steel sheet.
The basalt patterned color steel sheet according to claim 5, comprising a pretreatment layer comprised of one of a phosphoric acid coating layer, a chromate layer, and a non-chromate chemical conversion coating layer between the base steel plate and the hot-dip coating layer.
The basalt patterned color steel sheet according to claim 5, wherein the base layer for use as an undercoat has a dry coating thickness of 10 to 20㎛.
The basalt pattern color steel sheet according to claim 5, wherein the top coat layer has a dry coating thickness of 10 to 30 ㎛.
The basalt pattern color steel sheet according to claim 5, wherein a clear coating layer having a dry coating thickness of 5 to 20 ㎛ is formed on the top coating layer.
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| PCT/KR2023/005109 WO2023211031A1 (en) | 2022-04-29 | 2023-04-14 | Whinstone pattern coating composition for manufacturing pre-coated metal color sheet and color sheet using the same |
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| KR100892586B1 (en) * | 2007-06-14 | 2009-04-08 | 유니온스틸 주식회사 | A Hammer-tone Color Steel Sheet And Manufacturing Method Thereof |
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| KR102187979B1 (en) * | 2018-11-30 | 2020-12-07 | 주식회사 케이씨씨 | Coating Composition |
| KR20220043962A (en) * | 2020-09-28 | 2022-04-06 | 주식회사 포스코 | Complex resin composition having excellent weather resistance and heat radiation property, complex resin coated steel sheet using thereof, and method for manifactiring thereof |
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