Fast-dry Waterborne 2K Epoxy Coating Resin: 300+hr Salt Spray For Automotive Axles And Chassis

Our R&D team has successfully formulated a two-component (2K) epoxy coating system composed of:

• WL-AD203 epoxy dispersion (Component A)
• WL-AC040 water-based epoxy hardener (Component B)

Performance Characteristics:
• Fast surface drying properties
• Exceptional corrosion resistance (>300 hours salt spray test)
• Excellent water resistance (>15 days immersion)
• Economical formulation for metal substrate priming

Complete Automotive Coating Solution:
This advanced 2K epoxy primer system, when combined with our specially formulated one-component acrylic topcoat, provides comprehensive protection for:
• Critical automotive components (axles, frames, chassis)
• Heavy-duty corrosion prevention
• OEM coating manufacturer specifications

System Advantages:
✓ Superior rust protection
✓ Simplified application process
✓ Cost-effective production solution
✓ Meets industry performance standards

WL-AD203 is an aqueous epoxy dispersion formulation. When combined with its designated water-based epoxy curing agent, this system enables the production of high-performance waterborne epoxy coatings. The product is specifically engineered for:

• Corrosion-resistant primer applications
• Epoxy floor coatings
• Various metal substrate protection

Key Technical Features:
• Accelerated surface drying properties
• Compatibility with wet-on-wet application techniques
• Rapid hardness development
• Extended pot life for improved workability

WL-AC040 Epoxy curing agent

Item	Value	Testing Method
Appearance	Light yellow transparent liquid	Visual
Non-Volatile content(%)	40±2	GB/T 1725-2007
Viscosity(mPa.s)(25℃)	2000~8000	GB/T 21059-2007
Active hydrogen equivalent	300±10	----

WL-AC-040 Water-Soluble Polyamine Adduct

WL-AC-040 is a modified polyamine-based curing agent specifically formulated for waterborne epoxy resin systems. This advanced formulation is engineered for anti-corrosion primers and epoxy floor paints for various metal substrates.

Key Performance Characteristics:
• Rapid curing properties
• Minimal surface drying time
• Superior substrate adhesion
• Extended working time
• Exceptional cost-performance ratio

WL-SP1000 is a water-based emulsion of acrylic copolymer.

Item	Value	Testing Method
Appearance	Milky white liquid	Visual
Non-Volatile content(%)	47±1	GB/T1725-2007
Viscosity(mPa.s)(25℃)	50~500	GB/T 21059-2007
PH	7.0~9.0	GB/T 9724-2007
Minimum film forming	40	——

Features: excellent gloss, excellent initial water resistance, good water resistance, strong versatility, suitable for

primer and topcoat of various metal substrates.

A set of coating test data consisting of WL-AD203 epoxy/WL-AC040 curing agent primer + WL-SP1000 single

component topcoat

WL-SP1000 black paint film test
Neutral salt spray test	>500h
Initial water resistance	>120h
40'C water immersion	>120h

Drying conditions:
Primer leveling for 15 minutes, baking at 60'C for 2 hours, and curing for 1 day

Salt spray test 20 days , test continue Salt spray test 30 days failed

  Xiamen WangQin Chemical Technology Co., Ltd. is a technology-based enterprise integrating research and development (R&D), production, and operations. Equipped with advanced modern production facilities and comprehensive testing equipment. Since its establishment,WangQin has built its brand and core competitiveness through "technological innovation". Specializing in the R&D, production, and applied research of polymer materials, the company has obtained numerous national invention patents and possesses continuous independent innovation and technological R&D capabilities. 

  Backed by a dedicated team of 50 professionals, WangQin operates state-of-the-art manufacturing infrastructure and comprehensive product testing systems to rigorously uphold ISO9001-certified Quality Management Systems. With an annual production capacity of 20,000 tons for both water-borne and oil-based resins, WangQin Provide multi-field industries application resin material products, from standard resin formulations to custom-tailored resin material solutions designed for diverse market needs.   

Our Products‌:
Acrylic resins, alkyd resins, epoxy resins, polyester resins, amino resins, and other customizable products.

‌Service Fields‌:
Packaging printing, plastic products, metal products, glass products, construction machinery, construction, wood products, and new energy industries.

    While pursuing technological innovation and business growth, WangQin also actively fulfills its corporate social responsibility (CSR). Specializing in the research and development (R&D), production, and applied research of polymer materials, WangQin drives green and sustainable development within the industry by providing high-quality, environmentally friendly polymer matrials products. WangQin strictly adheres to environmental management system certifications to minimize the environmental impact of the production processes. Additionally, WangQin proactively collaborates with industry peers to enhance its R&D capabilities and accelerate the translation and application of scientific achievements, contributing to societal progress. ‌Wangqin demonstrates its corporate social responsibility through tangible actions, exemplifying the accountability and leadership expected of an industry pioneer.

Guided by a philosophy of green and sustainable development, WangQin is dedicated to researching and developing eco-friendly, high-performance new material products. With a senior technical R&D team and deep expertise in polymer materials, coupled with extensive market experience, WangQin consistently introduces innovative products that meet both market demands and environmental standards. These products not only deliver exceptional performance but also significantly reduce environmental pollution, reflecting the company’s profound commitment to sustainability and its proactive implementation of sustainable practices.

    WangQin leads the industry innovation, spearhead the digital transformation of production. By integrating intelligent sensing, big data analytics, and cloud computing technologies, we have achieved fully automated monitoring and management of production processes, significantly enhancing both efficiency and quality control precision. Within our digitalized workshops, every process is precisely controlled, ensuring that each step from raw materials to finished products—adheres to the highest standards. Empowered by digitalization, WangQin drives green intelligent manufacturing and sets a new benchmark for the industry.