PC80 Epoxy Mastic

Designed to be an anti-corrosive protection of steel structures surfaces prepared by abrasive blast cleaning. Suitable for use under appropriate coating systems for exposed or immersed conditions. Patch primer for the repair of damaged surfaces. Tolerant to application over manually prepared surfaces.

• Excellent anti-corrosive performance.
• Excellent resistance to moisture.
• Excellent resistance to petroleum solvents and aliphatic solvents.
• Good resistance to corrosive chemicals.
• Excellent resistance to abrasion.
• Excellent resistance to weather.

• Volume Solids: 70-80%
• Coverage*: 6.4 m2/L (DFT 100-125 microns)
• Type: Two component
• Packing Ratio: 4L Base (Part A) : 1L Hardener (Part B)
• Color Availability: Red Oxide/ Light Grey/ White and selected range.
• Flash Point: 25oC
• Thinner: AT-02

PRACTICAL APPLICATION RATES – microns per coa

AVERAGE DRYING TIME

SURFACE PREPARATION

Steel: Abrasive blast clean to a minimum standard of Sa2.5 (ISO8501-1:1988) or SSPCSP10. An average surface profile of 50-75 microns is required. The surface to be coated must be clean and dry and free from all visible traces of surface contaminants. Manually prepared surfaces should be prepared to a minimum standard of St3 (ISO8501-1:1988) at the time of coating.

APPLICATION DATA

• Application methods: Brush/ Roller, Airless Spray, and Conventional Spray.
• Mixing ratio (by volume): 4 parts Base to 1 part Hardener.
• Thinner: Thinner AT02 (Maximum 5% addition).
• Airless Spray: Nozzle Size: 0.46mm (18 thou) Fan Angle: 65°. Operating Pressure: 155kg/cm² (2200 psi).
• Conventional Spray: Nozzle Size: 1.27mm (50 thou). Atomising Pressure: 2.8 kg/cm² (40 psi). Fluid Pressure: 0.4 kg/cm² (6 psi).
• Brush/Roller: This product is suitable for brush application. Application of more than one coat may be necessary to give equivalent dry film thickness to a single spray-applied coat.

APPLICATION CONDITIONS AND OVERCOATING

This product should preferably be applied at a temperature in excess of 10°C. In conditions of high relative humidity i.e. 80-85%, good ventilation conditions are essential. The substrate temperature should be at least 3°C above the dew point. At application temperature below 10°C, drying and curing time will be significantly impaired. Application at a temperature below 5°C is not recommended. In order to achieve optimum water and chemical resistance, the temperature needs to be maintained above 10°C during curing.

Consult Safety Data Sheet for information on the safe handling and application of this product.