TERNARY HOT-DIP GALVANNEALED STEEL SHEET SURFACE TREATMENT SOLUTION COMPOSITION FOR PROVIDING EXCELLENT BLACKENING RESISTANCE AND ALKALI RESISTANCE, TERNARY HOT-DIP GALVANNEALED STEEL SHEET SURFACE-TREATED USING SAME, AND MANUFACTURING METHOD THEREFOR

• Main Authors: CHO, Soo-Hyoun, SON, Won-Ho
• Format: Patent
• Language: English; French; Korean
• Published: 01.04.2021
• 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; 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; 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; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; USE OF MATERIALS THEREFOR; WOODSTAINS

The present invention relates to a surface treatment composition comprising, on the basis of 100 wt% of the solid part of the composition, 20-40 wt% of a water-soluble polyurethane resin, 40-60 wt% of a silane-based sol-gel resin in which three types of silane compounds are cross-linked, 5-15 wt% of a curing agent, 0.5-1.5 wt% of a corrosion inhibitor, 0.1-1.0 wt% of a molybdenum-based compound, 1.0-3.0 wt% of a silane coupling agent; 1.0-2.0 wt% of an organometallic complex,1.0-2.0 wt% of an acid scavenger, 0.1-1.0 wt% of an aluminum-based compound, and 1.0-2.0 wt% of a lubricant. A ternary hot-dip galvannealed steel sheet treated with a chromium-free surface treatment coating agent, according to one embodiment of the present invention, in particular, has excellent blackening resistance, alkali resistance and corrosion resistance and provides excellent effects without concern for problems, in chromium treatment, of additional equipment installation, an increase in manufacturing costs and environmental pollution. La présente invention concerne une composition de traitement de surface comprenant, sur la base de 100 % en poids de la partie solide de la composition, 20 à 40 % en poids d'une résine de polyuréthane hydrosoluble, 40 à 60 % en poids d'une résine sol-gel à base de silane dans laquelle trois types de composés de silane sont réticulés, 5 à 15 % en poids d'un agent durcisseur, 0,5 à 1,5 % en poids d'un inhibiteur de corrosion, 0,1 à 1,0 % en poids d'un composé à base de molybdène, 1,0 à 3,0 % en poids d'un agent de couplage au silane ; 1,0 à 2,0 % en poids d'un complexe organométallique, 1,0 à 2,0 % en poids d'un capteur d'acide, 0,1 à 1,0 % en poids d'un composé à base d'aluminium, et 1,0 à 2,0 % en poids d'un lubrifiant. Une tôle d'acier galvanisée par immersion à chaud ternaire traitée avec un agent de revêtement de traitement de surface exempt de chrome, selon un mode de réalisation de la présente invention, présente plus particulièrement une excellente résistance au noircissement, aux alcalis et à la corrosion, et fournit d'excellents effets sans risque de problèmes, dans le traitement au chrome, au niveau d'une installation d'équipement supplémentaire, d'augmentation des coûts de fabrication et de pollution environnementale. 본 발명은 조성물의 고형분 100 중량%에 대하여, 수용성 폴리우레탄수지 20 내지 40 중량%; 3종의 실란 화합물이 가교 결합된 실란계 졸-겔 수지 40 내지 60중량%; 경화제 5 내지 15 중량%; 방청 내식제 0.5 내지 1.5중량%; 몰리브덴계 화합물 0.1 내지 1.0 중량%; 실란 커플링제 1.0 내지 3.0 중량%; 유기금속 착화합물 1.0 내지 2.0 중량%; 산제거제(Acid scavenger) 1.0 내지 2.0 중량%;알루미늄계 화합물 0.1 내지 1.0 중량%; 및 윤활제 1.0 내지 2.0 중량%를 포함하는 표면처리 조성물에 관한 것이다. 본 발명의 일 실시예에 따른 크롬프리 표면처리 코팅물로 처리된 삼원계 용융아연합금도금강판은 특히 내흑변성, 내알칼리성 및 내식성이 우수한 효과가 있으며, 크롬을 처리하기 위하여 부가설비 설치문제, 제조비용 상승문제, 및 환경오염 문제의 염려 없이 우수한 효과를 제공할 수 있다.