PPG NovaGuard 890 Conductive is two-component, solvent-free amine cured novolac phenolic epoxy coating.

This one-coat conductive tank coating system with excellent resistance to crude oil up to 120°C, suitable for storage of unleaded gasolines blended up to 100% ethanol (E5 up to E100). Approved by German building authorities according to DIBt building code for storage of flammable fuels.

Please note: This product is subject to a minimum order quantity of 440L and has an approximate delivery lead time of 21-28 days

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• Features & Benefits
• Technical Data
• Recommended Substrate Conditions and Temperatures
• Instructions For Use
• Additional Data
• Safety Precautions
• References

Features & Benefits

• One coat conductive tank coating system
• Excellent resistance to crude oil up to 120°C (250°F)
• Approved by German building authorities according to DIBt building code for storage of flammable fuels
• Suitable for storage of unleaded gasolines blended up to 100% ethanol (E5 up to E100)
• Prevents build-up of static electricity in liquids during loading operations
• Suitable for storage of biodiesel (EN14214)
• Good chemical resistance against a wide range of chemicals and solvents
• Extensive chemical resistance list available
• Glossy and smooth appearance
• Reduced explosion risk and fire hazard
• Good conductivity property (longitudinal conductivity < 1x10^8 Ohm and conductivity to the steel < 1x10^6 Ohm)

Technical Data

Basic data (at 20°C)

Notes:

See Additional Data further below for details on spreading rate and film thickness, overcoating intervals, and curing times.

Recommended Substrate Conditions and Temperatures

Substrate conditions

Steel; blast cleaned to a minimum of ISO-Sa2½, blasting profile 50 – 100 µm (2.0 – 4.0 mils)

Substrate temperature and application conditions

• Substrate temperature during application and curing should be above 5°C
• Substrate temperature during application should be at least 3°C above dew point

Instructions For Use

Mixing ratio by volume: base to hardener 66.7:33.3 (2:1)

• The temperature of the mixed base and hardener should preferably be, depending on application method between 30°C and 40°C
• No thinner should be added

Induction time

• None

Pot life

• 20 minutes at 40°C

See Additional Data for pot life.

Airless spray

• Single feed airless spray with a maximum paint hose of 30 meters (98 ft) with in-line heater at 30°C
• Twin feed airless spray with both components at 40°C (104°F) with paint hose up to 100 meters (328 ft)

Recommended thinner

• No thinner should be added

Nozzle orifice

• Approx. 0.53 mm

Nozzle pressure

• At 40°C paint temperature min. 20.0 MPa (approx. 200 bar; 2901 p.s.i.)

Brush/roller

• For stripe coating and spot repair only

Recommended thinner

• No thinner should be added

Cleaning solvent

THINNER 90-53 or THINNER 90-83

Notes:

• All application equipment must be cleaned immediately after use
• Paint inside the spraying equipment must be removed before the pot life has been expired

Additional Data

Note: Maximum DFT when brushing: 150 µm (6.0 mils)

Measuring wet film thickness

• A difference is often obtained between the measured apparent WFT and the real applied WFT. This is due to the thixotropy and the surface tension of the paint, which retards the release of air, trapped in the paint film for some time
• Recommendation is to apply a WFT, which is equal to the specified DFT plus 60 µm (2.4 mils)

Measuring dry film thickness

• Because of low initial hardness the DFT cannot be measured within some days, due to the penetration of the measuring device into the soft paint film
• The DFT should be measured using a calibration foil of known thickness placed in between the coating and the measuring device

Note: Surface should be dry and free from any contamination

Note: Adequate ventilation must be maintained during application and curing (please refer to INFORMATION SHEETS 1433 and 1434)

Note: Due to exothermic reaction, temperature during and after mixing may increase

Safety Precautions

• For paint and recommended thinners see INFORMATION SHEETS 1430, 1431 and relevant Material Safety Data Sheets
• Although this is a solvent-free paint, care should be taken to avoid inhalation of spray mist, as well as contact between the wet paint and exposed skin or eyes
• No solvent present; however, spray mist is not harmless, a fresh air mask should be used during spraying
• Ventilation should be provided in confined spaces to maintain good visibility

References