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: 20.04.2023
• Subjects: ADHESIVES; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL; 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; 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; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; PERFORMING OPERATIONS; POLISHES; PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL; SPRAYING OR ATOMISING IN GENERAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; TRANSPORTING; USE OF MATERIALS THEREFOR; WOODSTAINS

The objective of the present invention is to provide a surface treatment composition capable of imparting excellent 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 treatment composition comprising, with respect to 100% by weight of the solid content of the composition: 70-90% by weight of a resin mixture including a high molecular weight polysilicon-modified polyurethane main resin, a low molecular weight polysilicon-modified polyurethane auxiliary resin, and an auxiliary epoxy resin; 0.5-10% by weight of a tarnish inhibitor; 0.5-10% by weight of an adhesion promoter; 0.5-10% by weight of an anticorrosive agent; 0.1-2% by weight of a coloring pigment; and 0.1-1% by weight of a pigment stabilizer. L'objectif de la présente invention est de fournir une composition de traitement de surface capable de conférer d'excellentes résistance à la corrosion, résistance au noircissement, 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 de traitement de surface comprenant, par rapport à 100 % en poids de la teneur en matières solides de la composition : 70 à 90 % en poids d'un mélange de résines comprenant une résine principale de polyuréthane modifié par polysilicium de poids moléculaire élevé, une résine auxiliaire de polyuréthane modifié par polysilicium de faible poids moléculaire et une résine époxy auxiliaire ; 0,5 à 10 % en poids d'un inhibiteur de ternissement ; 0,5 à 10 % en poids d'un promoteur d'adhérence ; 0,5 à 10 % en poids d'un agent anticorrosion ; 0,1 à 2 % en poids d'un pigment colorant ; et 0,1 à 1 % en poids d'un stabilisant de pigment. 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 에폭시 보조수지를 포함하는 수지 혼합물 70 내지 90 중량%; 변색 방지제 0.5 내지 10 중량%; 밀착 증진제 0.5 내지 10 중량%; 방청 내식제 0.5 내지 10 중량%; 착색안료 0.1 내지 2 중량%; 및 안료 안정화제 0.1 내지 1 중량%를 포함하는 표면처리 조성물을 제공한다.