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Excellent mechanical strength and dimensional stability after curing.
Good compatibility with standard MEKP initiators and low-profile additives.
Low viscosity for enhanced fiber wet-out and improved processability in RTM and hand lay-up.
Superior weather resistance and UV stability for outdoor applications.
Consistent batch-to-batch reproducibility meeting ISO 9001 manufacturing controls.
Fiberglass-reinforced plastic (FRP) tanks and chemical storage vessels.
Marine hulls, decks, and structural components requiring corrosion resistance.
Automotive body panels and under-hood composite parts.
Wind turbine blade root sections and nacelle covers.
Architectural cladding, grating, and decorative molded products.
| Chemical Type | Orthophthalic unsaturated polyester resin |
| Product Form | Liquid, ready-to-use |
| Appearance | Clear to pale yellow transparent liquid |
| Viscosity (25°C, mPa·s) | 350–450 |
| Gel Time (with 1.0% MEKP, 25°C, min) | 12–18 |
| Solid Content (% w/w) | 99.5–100.0 |
| Density (25°C, g/cm³) | 1.12–1.15 |
| Reactivity Profile | Moderate reactivity; optimized for ambient and elevated temperature curing |
Q1: What are the key performance characteristics of ETERSET 2867?
A: ETERSET 2867 is a medium-viscosity, styrene-containing unsaturated polyester resin designed for excellent mechanical strength, good chemical resistance, and balanced cure speed. It offers reliable gel time control under standard ambient and elevated temperature conditions, and delivers consistent surface finish and dimensional stability in reinforced composites.
Q2: Which curing agents are typically recommended for use with this resin?
A: ETERSET 2867 is compatible with standard methyl ethyl ketone peroxide (MEKP) initiators, commonly supplied as paste or liquid formulations. Catalyst selection and dosage depend on processing method (e.g., hand lay-up, spray-up, or RTM), ambient conditions, and desired pot life—users should perform small-scale trials to optimize initiation profile.
Q3: Can ETERSET 2867 be used in outdoor applications requiring UV resistance?
A: While ETERSET 2867 provides solid baseline weathering performance, it is not inherently UV-stabilized. For long-term outdoor exposure, incorporation of UV absorbers and HALS-type light stabilizers into the formulation—or application of a protective gel coat or topcoat—is strongly recommended to prevent chalking, gloss loss, and surface degradation.
Q4: Is this resin suitable for contact molding processes involving fiberglass reinforcement?
A: Yes, ETERSET 2867 is widely used in contact molding applications with woven roving, chopped strand mat, and triaxial fabrics. Its viscosity and reactivity support good wet-out of reinforcements and low air entrapment, contributing to high-quality laminates with minimal void content when proper technique and adequate compaction are applied.
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