Overview
Reactive epoxy emulsion is a water-based dispersion of epoxy resin particles, stabilized by surfactants. Unlike solvent-borne epoxies, it offers environmental advantages with minimal volatile organic compounds (VOCs). The emulsion cures when mixed with compatible hardeners, forming durable cross-linked polymers. Developed as an eco-friendly alternative, it retains key epoxy properties like high bond strength and chemical resistance. Major industries adopt it for compliance with environmental regulations while maintaining performance standards. Typical formulations contain 40-60% epoxy solids by weight.
Physical and Chemical Properties
The emulsion exhibits a milky appearance with viscosity ranging from 500-3000 cP at 25°C. Its stability depends on pH (typically 6-8) and storage conditions. Particle size distribution (0.1-1 µm) affects film formation and penetration. Key chemical properties include epoxy equivalent weight (EEW) of 450-550 g/eq and reactivity with amine or polyamide hardeners. It demonstrates excellent resistance to water, acids, and alkalis after curing, with tensile strength reaching 30-50 MPa in cured films.
Main Applications
Industrial flooring systems represent the largest application, where the emulsion provides seamless, chemical-resistant surfaces. It's favored for food processing plants and pharmaceutical facilities due to FDA compliance in some formulations. In construction, it serves as a binder for cementitious coatings and tile adhesives. Manufacturers also use it in automotive primers and coil coatings. Emerging applications include fiber-reinforced composites and 3D printing materials, leveraging its low shrinkage during curing.
Safety and Storage
While non-flammable, the emulsion requires precautions against skin contact and eye exposure. Use PPE including nitrile gloves and safety goggles. Spills should be contained with absorbent materials. Storage life ranges from 6-12 months in original sealed containers at controlled temperatures. Freezing causes irreversible separation. Always check for sedimentation or odor changes before use. Incompatible with strong acids, oxidizers, and some metallic salts.
B2B Procurement Guide
Procure from ISO-certified suppliers with batch consistency reports. Key specifications to verify include solids content (±2% tolerance), viscosity range, and gel time with standard hardeners. For large projects, request pilot batches to test compatibility with application equipment. Consider regional suppliers to minimize transportation risks. Bulk purchases (200+ kg drums) typically offer 10-15% cost savings versus small packaging. Negotiate technical support for first-time users.
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