PolyurethaneSơn phủ acrylic
KF-PU500 Polyurethane Acrylic Topcoat
KeXin KF-PU500 polyurethane acrylic topcoat uses imported aliphatic isocyanate (HDI trimer) as the curing agent and highly weather-resistant acrylic resin as the main agent. The coating possesses excellent UV aging resistance and decorative appearance retention. As the final topcoat of a heavy-duty anti-corrosion coating system, it provides steel structures with comprehensive triple protection: weather resistance, chemical medium resistance, and decorative appearance. Xenon lamp aging 2000h ΔE<3，户外10年Độ bóng保持率>70%。
ProductsTổng quan
Polyurethane acrylic topcoat is a professional coating product developed by KeXin New Material for the automotive coating industry. It uses imported resins and highly durable pigments, with precise color matching and excellent application performance. It is widely used in automotive OEM production lines and aftermarket repair spraying.
Sản phẩm đáp ứng các tiêu chuẩn của nhà sản xuất thiết bị gốc (OEM) và nhu cầu của thị trường sửa chữa phụ tùng ô tô, với độ bóng trên 95GU và không bị phai màu đáng kể sau 2000 giờ thử nghiệm lão hóa QUV. Hệ thống phối màu hoàn chỉnh và hỗ trợ kỹ thuật được cung cấp.
Why choose polyurethane acrylic topcoat?
Cốt lõiƯu điểm
Superior weather resistance · Like new for ten years
It uses top-grade aliphatic isocyanate (HDI trimer) as the curing agent, combined with a dual light stabilization system of highly effective ultraviolet absorbers (UVA) and hindered amine light stabilizers (HALS). Xenon lamp accelerated aging 2000h (equivalent to 10 years outdoors) color difference ΔE<3，Độ bóng保持率>70%. The coating does not chalk, yellow, or lose gloss.
High-gloss decorative
High-solids acrylic resin provides excellent leveling and fullness. 20° gloss >85GU, 60° gloss >92GU. The coating surface is smooth and even, with vivid colors and a full texture. It offers any color selection from 30+ color systems such as RAL, Pantone, and national standard color cards, and supports precise computer color matching and paint formulation.
Comprehensive chemical resistance
Resistant to 93# gasoline/diesel/engine oil (no change for 24h). Resistant to 10% sulfuric acid/10% hydrochloric acid/10% sodium hydroxide/saturated sodium chloride solution (no change for 7d). Resistant to acidic pollutants such as SO₂, H₂S, NOx in industrial atmosphere. Suitable for harsh environments such as chemical plant areas, refineries, and coastal industrial areas.
Excellent physical and mechanical properties
Film flexibility ≤1mm (ISO 1519 mandrel bend without cracking). Impact resistance 50kg·cm (direct and reverse impact). Abrasion resistance (Taber CS-17)<50mg/1000转。Độ cứng≥H（Độ cứng bút chì）。Coating经得起Vận chuyển吊装安装过程中的碰撞和摩擦，不易产生hư hỏng cơ học。
Wide application adaptability
Supports various application methods including high-pressure airless spraying, air spraying, roller coating, and brush coating. 5°C low-temperature curing formula adapts to construction under different climate conditions. Pot life ≥4h (25°C), providing ample working time for coating large components. Good leveling properties, not prone to brush marks and roller marks.
Environmental compliance · Green manufacturing
Hàm lượng VOC<420g/L，CompliesGB 30981-2020Bảo vệ công nghiệpsơn有害chất限量Tiêu chuẩn。不含铅、铬、汞等Kim loại nặng。通过REACH和RoHSChứng nhận。生产过程和Products本身均Complies国家Môi trường政策导向。ProvidesSGS/CTIKiểm định bên thứ ba报告。
Kỹ thuậtSpecifications
Thông số cơ bản
Chỉ tiêu hiệu năng
Các thông số kỹ thuật ở trên được lấy từ số liệu thử nghiệm của phòng thí nghiệm Kexin New Materials (công nhận ISO 17025); giá trị thực tế có thể chênh lệch đôi chút tùy điều kiện thi công và nền liệu. Vui lòng liên hệ bộ phận hỗ trợ kỹ thuật để nhận báo cáo thử nghiệm COA mới nhất.
Thường gặpCâu hỏi
ApplicationProcess
Kiểm tra bề mặt nền
The intermediate coat surface must be fully cured, clean and dry. Free of oil, dust, and condensation. If the intermediate coat has chalking, it must be sanded and removed. If there is local damage, the intermediate coat must be repaired by touch-up. Ambient temperature 5-40°C, relative humidity<85%。
Pha trộn
Strictly mix the main agent and curing agent at a 4:1 volume ratio. First stir the main agent until uniform, then slowly add the curing agent and stir for 5 min. Add an appropriate amount of PU thinner to adjust to a working viscosity of 16-20s (Ford cup No. 4). Filter through a 200-mesh screen before use. Induction time 15 min.
phun sơn màu
High-pressure airless spraying: nozzle 0.38-0.48mm / pressure 12-18MPa. Spray 2 coats with a total dry film thickness of 50-80μm. The first coat is a mist coat for coverage (20-30μm), with a 15-20min flash-off interval. The second coat is a full wet coat (30-50μm) to establish the final gloss.
Sấy khô đóng rắn
At 25°C, tack-free in 2h / hard dry in 24h. At low temperature 5°C, hard dry is extended to 48h. Polyurethane curing is sensitive to moisture; avoid contact with water during application and curing. Forced drying: 60°C × 60min can accelerate curing.
Final Inspection
Final acceptance shall be carried out 7 days after curing. Test gloss (60° gloss meter), color difference (spectrophotometer), adhesion (pull-off method ≥5MPa), and film thickness (ISO 2808). Visual inspection at 100cm shall show no color difference / orange peel / particles / sagging. Provide complete test reports and warranty certificate.
Ứng dụngTrường hợp
Topcoat for the exterior surface of steel bridge box girders
Polyurethane acrylic topcoat for the exterior surface of highway steel bridge box girders, high-gloss decorative long-term weather-resistant protection
Topcoat for the exterior wall of petrochemical storage tanks
Polyurethane topcoat for the exterior wall of large petrochemical storage tanks, white high reflectance reduces VOCs volatilization, energy-saving and environmentally friendly
Topcoat for steel structures of sports venues
Colored polyurethane topcoat for exposed steel structures of sports venues, a perfect combination of architectural aesthetics and anti-corrosion protection
Wind turbine tower exterior topcoat
Polyurethane topcoat for wind turbine tower exterior, all-weather outdoor weather resistance and UV aging strict protection
Port machinery topcoat
Polyurethane topcoat for large steel structures of port container quay cranes, long-term protection in coastal high salt spray environment
Airport terminal steel structure colored topcoat
Polyurethane colored topcoat for large-span steel structures of airport terminals, indoor long-term color and gloss retention decoration
Pipeline exterior topcoat anti-corrosion
Polyurethane topcoat for above-ground process pipeline exterior, comprehensive protection in industrial atmospheric environment
Railway steel bridge topcoat
Polyurethane topcoat for railway steel truss bridge exterior, professional anti-corrosion solution with vibration resistance and aging resistance
Hydraulic steel gate topcoat
Polyurethane topcoat for hydraulic engineering steel gate exterior, long-term protection in alternating dry and wet environment
Mining Equipment Topcoat Application
Polyurethane high-gloss topcoat application for the exterior surfaces of large mining equipment, providing comprehensive impact and wear protection
Commercial Building Steel Structure Topcoat
Polyurethane decorative topcoat application for steel structures in commercial complex spaces, meeting high-standard appearance quality requirements
Offshore Platform Topcoat Anti-Corrosion
Polyurethane topcoat application for the superstructure of offshore drilling platforms, withstanding harsh extreme marine environments
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KeXin Polyurethane Acrylic Topcoat supplied directly from the source factory. Free sample testing, on-site guidance by technical engineers, ISO-certified quality assurance.