SURFACE TREATMENT COMPOSITION FOR TERNARY HOT DIP GALVANIZED STEEL SHEET, SURFACE-TREATED TERNARY HOT DIP GALVANIZED STEEL SHEET USING SAME, AND PREPARATION METHOD THEREOF

• Main Authors: CHO, Soo-Hyoun, SON, Won-Ho
• Format: Patent
• Language: English; French; Korean
• Published: 10.03.2022
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; CORRECTING FLUIDS; DIFFUSION TREATMENT OF METALLIC MATERIAL; DYES; FILLING PASTES; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; INKS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; POLISHES; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; USE OF MATERIALS THEREFOR; WOODSTAINS

The present invention provides a surface treatment composition capable of conferring corrosive resistance, blackening resistance, alkali resistance, and an intrinsic surface color property on a ternary hot dip galvanized steel sheet. The present invention provides a surface-treated composition comprising: 70 to 90 weight% of a resin mixture comprising a high-molecular weight polysilicon-modified polyurethane main resin, a low-molecular weight polysilicon-modified polyurethane auxiliary resin, and an acryl-urethane auxiliary resin; 5 to 25 weight% of a melamine-based curing agent; 0.5 to 10 weight% of an inorganic additive; 0.5 to 10 weight% of a silane coupling agent; 0.1 to 2 weight% of an adhesion promoter; 0.1 to 2 weight% of a coloring pigment; and 0.1 to 1 weight% of a pigment stabilizer, on the basis of 100 weight% of the solid content of the composition. La présente invention concerne une composition de traitement de surface capable de conférer une résistance à la corrosion, une résistance au noircissement, une résistance aux alcalis et une propriété de couleur de surface intrinsèque sur une tôle d'acier galvanisée par immersion à chaud ternaire. La présente invention concerne une composition traitée en surface comprenant : 70 à 90 % en poids d'un mélange de résine comprenant une résine principale de polyuréthane modifié par du polysilicium de haut poids moléculaire, une résine auxiliaire de polyuréthane de faible poids moléculaire modifié par du polysilicium, et une résine auxiliaire acrylique-uréthane ; 5 à 25 % en poids d'un agent de durcissement à base de mélamine ; 0,5 à 10 % en poids d'un additif inorganique ; 0,5 à 10 % en poids d'un agent de couplage au silane ; 0,1 à 2 % en poids d'un promoteur d'adhésion ; 0,1 à 2 % en poids d'un pigment colorant ; et 0,1 à 1 % en poids d'un stabilisant de pigment, sur la base de 100 % en poids de la teneur en solides de la composition. 본 발명은 삼원계 용융아연합금 도금강판에 우수한 내식성, 내흑변성, 내알칼리성 및 고유의 표면 색상 특성을 부여할 수 있는 표면처리 조성물을 제공하기 위한 것이다. 본 발명은 조성물의 고형분 100 중량%에 대하여, 고분자량 폴리실리콘 변성 폴리우레탄 주제수지, 저분자량 폴리실리콘 변성 폴리우레탄 보조수지 및 아크릴-우레탄 보조수지를 포함하는 수지 혼합물 70 내지 90 중량%; 멜라민계 경화제 5 내지 25 중량%; 무기 첨가제 0.5 내지 10 중량%; 실란 커플링제 0.5 내지 10 중량%; 밀착증진제 0.1 내지 2 중량%; 착색안료 0.1 내지 2 중량%; 및 안료 안정화제 0.1 내지 1 중량%를 포함하는 표면처리 조성물을 제공한다.