Waterborne Epoxy Zinc-RichPrimer
KF-WZ500 Water-Based Epoxy Zinc-Rich Primer
KF-WZ500 Waterborne Epoxy Zinc-Rich Primer is based on waterborne epoxy resin and waterborne curing agent, with ultrafine zinc powder content greater than 70%. It uses water as thinner, with VOC approaching zero, making it environmentally friendly. The coating provides excellent cathodic protection and anti-rust performance, with salt spray resistance greater than 2000h. It is an environmentally friendly upgrade solution for solvent-based epoxy zinc-rich primers. Widely used in environmentally friendly heavy-duty anti-corrosion coating for steel structures, bridges, wind power, petrochemical and other industries.
ProductsOverview
Waterborne Epoxy Zinc-Rich Primer is a heavy-duty anti-corrosion coating designed by KeXin New Material in accordance with ISO 12944 standards. It is scientifically formulated with high-quality resins and high-performance anti-rust pigments, offering excellent anti-corrosion performance and adhesion. Widely used for protective coating in heavy-duty anti-corrosion fields such as steel structures, bridges, petrochemicals, and ships.
The product has passed rigorous salt spray testing (>1000h) and adhesion testing (>5MPa), and with a complete base-intermediate-topcoat system, it can provide long-lasting protection for 15-25 years. Kexin provides free coating design solutions and technical support services.
Why choose waterborne epoxy zinc-rich primer?
CoreAdvantages
Zinc content >70% · Cathodic protection
Ultrafine spherical zinc powder (particle size 3-5 microns) content greater than 70% ensures electrical contact between zinc particles. The coating provides reliable cathodic protection (sacrificial anode) to prevent steel corrosion. Salt spray resistance greater than 2000h, rust creep at scribe less than 2mm. Anti-rust performance comparable to solvent-based epoxy zinc-rich primers.
Waterborne and eco-friendly · Zero VOC
Uses water as thinner, VOC approaching zero. Odorless, workers do not need to wear gas masks. Non-flammable and non-explosive, storage and transportation do not require hazardous chemical qualifications. Certified by HJ2537 China Environmental Labeling and Green Coating Product Certification. Helps enterprises reduce VOC emissions and achieve green manufacturing.
Primer and topcoat compatibility · Full waterborne system
Compatible with waterborne epoxy micaceous iron oxide intermediate coat and waterborne polyurethane topcoat to form a full waterborne heavy-duty anti-corrosion coating system. For C3-C4 corrosion environments, total dry film thickness of 280 microns, design life greater than 15 years. Can replace solvent-based three-coat systems to achieve environmental friendliness throughout the coating process.
Professional coating technology support services
Kexin has an experienced coating R&D and application team providing full-process support — from substrate analysis, coating selection and process-parameter optimization to on-site application guidance.
Eco-compliant green manufacturing system
All products are certified against the ROHS/REACH environmental regulations and their VOC content meets national environmental standards. Environmental performance test reports issued by authoritative third-party laboratories such as SGS and CTI are provided.
Complete quality control and batch traceability
A full-process quality control system, from incoming raw materials to dispatch of finished goods. Every batch passes rigorous physico-chemical testing and simulated coating trials. Each shipment is released with a batch test report and a product warranty.
TechnicalSpecifications
Basic parameters
Performance
The technical parameters above are taken from test data of the Kexin New Materials laboratory (ISO 17025 accredited); actual values may differ slightly depending on application conditions and substrate. Please contact technical support to obtain a current COA test report.
Frequently AskedFAQ
ApplicationProcess
Surface preparation
Clean substrates thoroughly of oil and rust. Blast steel to Sa2.5. Pre-treat per product spec to keep the substrate clean. Ambient 5-40°C, relative humidity<85%。
Primer / pre-treatment
Select the matching primer or pre-treatment per substrate and system. Mix strictly at the stated ratio and control DFT. Proceed after the primer dries; pre-stripe critical areas.
Main-coat application
Apply the main coat per the process spec, strictly controlling DFT, temperature/humidity and flash-off to keep the film uniform without sagging or pinholes.
Curing process
Cure fully by stoving or by ambient air drying as the product requires. Keep oven temperature uniform within ±5°C and ramp up gradually to avoid coating defects. For ambient-curing grades, ensure adequate ventilation and suitable humidity.
Inspection & acceptance
Inspect all parameters: dry film thickness, adhesion, gloss, colour difference and chemical resistance. Full performance testing is carried out against the relevant standards. Only after everything passes are the test report and warranty issued, and the goods are packed and shipped in dust-free conditions.
ApplicationsCases
Steel structure waterborne epoxy zinc-rich
Industrial plant steel structure waterborne epoxy zinc-rich primer spray coating eco-friendly anti-rust
Bridge steel structure — waterborne zinc-rich
Waterborne Epoxy Zinc-Rich Primer Spraying for Highway Bridge Steel Structures C3-C4 Anti-Corrosion
Wind turbine tower — waterborne zinc-rich
Waterborne Epoxy Zinc-Rich Primer Spraying for Wind Power Tower Steel Structures Wind Power Coating
Petrochemical steel structure — waterborne zinc-rich
Waterborne Epoxy Zinc-Rich Primer Spraying for Petrochemical Plant Steel Structures Heavy-Duty Anti-Corrosion
Shipbuilding steel structure — waterborne zinc-rich
Waterborne Epoxy Zinc-Rich Primer Spraying for Ship Block Steel Structures Shipbuilding Coating
Waterborne Zinc-Rich for Steel Structure Buildings
Waterborne Epoxy Zinc-Rich Primer Spraying for High-Rise Steel Structure Buildings
Waterborne Zinc-Rich Primer for Pipelines
Waterborne Epoxy Zinc-Rich Primer Spraying for Metal Pipelines Pipe Rack Anti-Corrosion
Storage tank — waterborne zinc-rich primer
Spraying of Waterborne Epoxy Zinc-Rich Primer for Large Steel Storage Tanks
Transmission tower — waterborne zinc-rich
Outdoor Spraying of Waterborne Epoxy Zinc-Rich Primer for High-Voltage Transmission Towers
Waterborne Zinc-Rich for Steel Bridge Decks
Spraying of Waterborne Epoxy Zinc-Rich Primer for Orthotropic Steel Bridge Decks
Waterborne Zinc-Rich for Steel Formwork
Waterborne Epoxy Zinc-Rich Primer Coating for Turnover Protection of Building Steel Formwork
Marine steel structure — waterborne zinc-rich
Spraying of Waterborne Epoxy Zinc-Rich Primer for Steel Structures in Marine Environment C5 Environment
Related coatingsRecommended
Epoxy MIO intermediate coat
Single-channel 150μm · Mica iron oxide shielding · Adhesion ≥5MPa
Learn more→
Polyurethane acrylic topcoat
95GU Gloss · QUV2000h · Color and Gloss Retention
Learn more→
Inorganic zinc silicate primer
Temperature resistant up to 400℃ · Marine engineering specific · Inorganic bonding
Learn more→
Direct-to-rust primer
No sandblasting required; can be applied to rust-covered surfaces; saves 60% on costs.
Learn more→Waterborne Epoxy Zinc-Rich Primer·Factory direct supply
Kexin waterborne epoxy zinc-rich primer — supplied directly from our factory. Free sample testing, on-site guidance by technical engineers, and ISO-certified quality assurance.
Related articles & news
Further reading: technical articles and industry news from Kexin New Materials