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High reactivity with standard peroxide initiators for rapid gel time control.
Excellent mechanical strength and dimensional stability after curing.
Good resistance to water, dilute acids, and alkaline environments.
Low viscosity for easy handling, impregnation, and compatibility with fiberglass reinforcements.
Consistent batch-to-batch performance ensured by strict in-process QC protocols.
Fiberglass-reinforced plastic (FRP) tanks and chemical storage vessels.
Marine deck and hull laminates requiring corrosion resistance.
Industrial grating and structural panels for wastewater treatment plants.
Wind turbine blade root sections and secondary structural components.
Automotive under-hood composite parts exposed to moderate thermal cycling.
| Chemical Type | Unsaturated orthophthalic polyester resin |
| Product Form | Liquid, ready-to-use |
| Appearance | Clear to pale yellow, homogeneous liquid |
| Viscosity (25°C, mPa·s) | 350–450 |
| Acid Value (mg KOH/g) | 18–22 |
| Gel Time (at 25°C with 1.0% MEKP) | 12–16 minutes |
| Solids Content (% w/w) | 99.5–100.0 |
| Storage Stability (25°C) | ≥6 months in sealed container |
Q1: What is the primary application field for EL-6400?
A: EL-6400 is a high-performance unsaturated polyester resin designed primarily for structural and semi-structural composite applications, including pultrusion, filament winding, and reinforced thermoset laminates used in construction, transportation, and industrial equipment.
Q2: Is EL-6400 compatible with common curing agents and accelerators?
A: Yes, EL-6400 is formulated to be compatible with standard methyl ethyl ketone peroxide (MEKP) initiators and cobalt-based accelerators. Cure profiles can be adjusted based on ambient conditions and process requirements, supporting both room-temperature and elevated-temperature processing.
Q3: How does EL-6400 perform in terms of mechanical strength and dimensional stability?
A: EL-6400 delivers excellent tensile and flexural strength after full cure, along with low shrinkage and good resistance to warpage—making it well-suited for precision components requiring consistent geometry and long-term load-bearing capability.
Q4: Can EL-6400 be used in outdoor or UV-exposed applications?
A: While EL-6400 offers inherent weather resistance, prolonged direct UV exposure may lead to surface chalking or gloss loss over time. For extended outdoor service life, we recommend pairing it with a UV-stabilized gel coat or topcoat system.
Q5: What are the recommended storage conditions for EL-6400?
A: Store EL-6400 in its original sealed container in a cool, dry, and well-ventilated area, away from direct sunlight and heat sources. Avoid freezing, and maintain temperatures between 10°C and 30°C for optimal shelf life and handling consistency.
Contact With Us:
E-mail: wangxingqiang@ericwchem.com
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Building A1, Jiete Industrial Park, Huangpu District, Guangzhou City, Guangdong Province, China
