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High reactivity with standard styrene monomers for rapid gelation and efficient production cycles.
Excellent mechanical strength and dimensional stability in cured composites.
Good resistance to water, alkalis, and diluted acids under ambient service conditions.
Low viscosity at room temperature, enabling easy handling, impregnation, and mold filling.
Consistent batch-to-batch reproducibility meeting ISO 9001 manufacturing controls.
Fiberglass-reinforced plastic (FRP) tanks and chemical storage vessels.
Corrosion-resistant piping systems for industrial wastewater treatment.
Marine deck components and boat hull laminates requiring weather durability.
Automotive under-hood structural parts exposed to moderate thermal cycling.
Architectural cladding panels and decorative composite profiles.
| Chemical Type | Unsaturated orthophthalic polyester resin |
| Product Form | Liquid, ready-to-use |
| Appearance | Clear, pale yellow, transparent liquid |
| Viscosity (25°C) | 350–450 mPa·s |
| Acid Value | 18–22 mg KOH/g |
| Reactive Diluent | Styrene (38–42% w/w) |
| Flash Point (PMCC) | 36°C |
| Storage Stability | 6 months at ≤25°C in sealed containers |
Q1: What is the primary application field for YTMS-201 Polyester Resin?
A: YTMS-201 is specifically formulated for use in high-performance unsaturated polyester systems, commonly employed in marine gelcoats, corrosion-resistant linings, and structural composites where enhanced weather resistance and mechanical integrity are required.
Q2: Is YTMS-201 compatible with standard styrene monomers and common initiators?
A: Yes — YTMS-201 exhibits excellent miscibility with styrene and other reactive diluents, and it cures reliably with conventional peroxide initiators such as MEKP and BPO under ambient or elevated temperature conditions.
Q3: How does YTMS-201 perform in terms of hydrolytic stability and UV resistance?
A: YTMS-201 features a molecular structure designed to improve resistance to moisture ingress and long-term UV exposure, making it suitable for outdoor and humid-environment applications without rapid surface degradation or loss of gloss.
Q4: Can YTMS-201 be blended with other polyester resins or modified with additives?
A: Yes — YTMS-201 is fully blendable with most commercial unsaturated polyesters and responds well to common additives including thixotropes, pigments, and flame retardants, though compatibility testing is recommended for critical formulations.
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E-mail: wangxingqiang@ericwchem.com
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