1. Product Characteristics RIPOXY® S-520EX is a brominated bisphenol A epoxy resin with excellent flame-retardant properties. This resin is resistant to a wide range of acids, alkalis, bleaching agents, and organic compounds, making it suitable for many applications in the chemical industry.
2. Typical Liquid Resin Properties
- Acid Number (mg KOH/g): 7.0–11.0
- Viscosity (25°C, dPa•s): 3.0–5.0
3. Properties of Cured Resin Castings
- Tensile Strength (MPa): 70–85
- Elongation at Break (%): 4.0–6.0
- Flexural strength (MPa): 135–150
- Flexural modulus (GPa): 3.0–3.5
- Heat Deflection Temperature (°C): 110–115
- Barco hardness: 40
- Oxygen Index (O.I.): 28
- Curing Schedule: 24 hours at room temperature, followed by 2 hours at 120°C.
4. Properties of 3 mm Reinforced Laminate After Curing
- Tensile strength (MPa): 96
- Flexural strength (MPa): 147
- Flexural modulus (GPa): 7.8
- Barco Hardness: 50
- Typical Flame Retardancy (ASTM E84)
- Flame Spread Index (FSI): Class B
- 3 mm Reinforced Laminate: S/M/M/M/S, where S = glass fiber surface mat, 30 g/m²; M = chopped glass fiber mat, 450 g/m²
- Curing Schedule: 24 hours at room temperature, 2 hours at 120°C.
5. Applications and FRP Molding Methods S-520EX offers excellent corrosion resistance and is widely used in corrosion-resistant FRP products for pipelines, towers, and vessels.It is also used as a lining for steel tanks, concrete vessels, and concrete floors exposed to corrosive environments. FRP Molding Methods: Hand lay-up, pultrusion, filament winding, vacuum infusion molding, etc.
6. Storage: Store at temperatures below 27°C. Storage life decreases as storage temperature increases. Avoid exposure to direct sunlight or heat sources such as steam pipes. To prevent water contamination, do not store outdoors.