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A two-part waterborne epoxy resin system formulated with WL-EP213 and WL-C040 curing agents, designed as ambient-cure polymers. These thermosetting resins specialize in producing heavy-duty primers and interior coatings for metal substrates, offering energy-efficient alternatives to heat-cured powder coatings.
Key Performance Features
1. Rapid curing with exceptional durability: Delivers tough, UV-resistant protective coatings featuring high ultimate hardness, mar resistance, and abrasion resistance
2. Low-volatility formulation: Enables water cleanup and reduces flammability risks compared to solvent-based systems
3. Superior adhesion: Compatible with diverse metal substrates including cast iron, steel, and aluminum
4. High heat resistance: Suitable for industrial and automotive applications
Applications
Waterborne epoxy flooring systems
Railway/locomotive, bridge, and container anti-corrosion paints
Marine and heavy-duty industrial coatings
| item | WL-EP213 | Test method |
| exterior | Ivory uniform fluid | visual |
| Non-volatile value(%) | 50±2 | GB/T1725-2007 |
| viscosity(m Pa·s) | ≤2000 | NDJ-79 rotary viscosimeter |
| pH value | 4.0~8.0 | GB 8325-1987 |
| Epoxy value(for solid) | 0.18~0.22 | Hydrochloric acidacetone solution |
The typical data of product:
A two-component coating formulated with WL-EP213 epoxy resin and WL-C040 curing agent.
Film thickness: 50-60um at 80℃ for 30 mins, salt fog resistance: over 800 hours
Coating film Test
Primer Test Result
| Item | Test Result | Test Method | |
| Physical and Chemical Properties | Original paint | Uniform liquid | Visual check |
| Paint film color | Light grey | Visual check | |
| Hiding power, g/m2 | 80 | GB/T 1720-1979 | |
| Original paint viscosity (T-4 cup at 25o) S | 132s | GB/T 1723-1993 | |
| Fineness, micron | ≤30 | GB/T1724-1979 | |
| Non-volatile matters, % | 52 | GB/T1725-2007 | |
| Surface drying time, min at 23℃ | 20 | GB 1728-1979 | |
| Hard drying time, h at 25℃ | 5 | GB 1728-1979 | |
| Baking time, min at 65℃ | 30 | GB/T1728-1979 | |
| Pot life, h at 25℃ | 3 | HG/T3668-2000-5.9 | |
| Mechanical Properties | Hardness (pencil) | H | GB/T 6739-2006 |
| Flexibility, mm | 1 | GB/T 1731-1993 | |
| Impact resistance, KgNaN/50cm | pass | GB/T 1732-1993 | |
| Grinability (20 times,320# sand paper | grindable | GB/T1770-2008 | |
| Adhesion (Cross-cut tape test) | 1 | GB/T9286-1998 | |
| Adhesion (circle-cut tape test) | 1 | GB/ 1720-1979 | |
| Matching | Compatibility with other coating | Good | |
| Corrosion resistance | Water resistance at 23℃ | 240 h , no bubbling, peeling off and rusting | GB/T 1733-1993 |
| Alkaline resistance (at 25℃, 0.1N NaOH) | 48 h | GB/T9274-1998 | |
| Acid resistance (at 25℃, 0.1N H2SO4) | 48 h, no bubbling | GB/T9274-1998 | |
| Oil resistance (at 25℃,10# Transformer oil) | 48 h, no change | HGT/ 9274-1998 | |
| Temperature alternating resistance (at -40℃ +60℃) | |||
| Salt fog resistance (480h) | Bubbling at cross, not bigger than 2 mm at a single side | GB 1771-2007 | |
