1. Product characteristics RIPOXY? S-520EX is a brominated bisphenol A epoxy resin with high flame retardant properties. The resin is resistant to a wide range of acids, bases, bleaches and organic compounds and is suitable for many chemical industry applications.

2. Typical liquid resin properties

• Acid value (KOH mg/g): 7.0~11.0
• Viscosity (25℃, dPa-s): 3.0~5.0

3. Properties of cured resin castings

• Tensile strength (MPa): 70～85
• Tensile strength at break (%): 4.0～6.0
• Bending strength (MPa): 135-150
• Flexural modulus (GPa): 3.0～3.5
• Heat distortion temperature (℃): 110～115
• Bakelite hardness: 40
• Oxygen Index (O.I.): 28
• Curing program: 24 hours at room temperature, 2 hours at 120°C.

4. 3 mm reinforced laminate properties after curing

• Tensile strength (MPa): 96
• Bending strength (MPa): 147
• Flexural Modulus (GPa): 7.8
• Barco hardness: 50
• Typical Flame Retardancy (ASTM E84)

  • Flame Spread Index (FSI): Class B

• 3mm reinforced laminate: S/M/M/M/S, S=glass surface mat, 30g/m2; M=chopped fiberglass mat, 450g/m2
• Curing program: 24 hours at room temperature, 2 hours at 120°C.

5. Applications and FRP molding methods S-520EX has excellent corrosion resistance and is widely used as a corrosion-resistant FRP product for pipes, towers and vessels. It is also used for lining steel tanks, concrete containers and concrete floors exposed to corrosive environments. FRP molding methods: hand lamination, pultrusion, fiber winding, and vacuum impregnation molding.

6. Storage Store below 27°C. Storage life decreases as storage temperature increases. Avoid exposure to direct sunlight or heat sources such as steam pipes. To avoid water contamination of the product, do not store outdoors.