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Products Techniques PT-426F Low VOC Epoxy Topcoat

Products Techniques PT-426F Low VOC Epoxy Topcoat is a high performance, two component catalyst cure epoxy topcoat designed for exterior use on high performance aviation/aerospace, industrial, and marine applications. PT-426G Series Epoxy meets, and exceeds MIL-PRF-22750E, F & G Type I CL H GRADE B as well as BMS 10-11V Type II. This high performance coating contains no substance of know toxicity (under normal usage conditions) and provides ultimate protection. These epoxy topcoats provide a high quality finish to metal, wood, and most other materials capable of being coated and offer excellent chemical resistance properties.

Product Type: 2K (2 component) Coating, Top Coat

Application Area: Marine Applications

Compatible Substrates & Surfaces: Metal, Wood

Features: Chemical Resistant, High Performance, Low VOC

Application Method: Brush, Roller, Spray

Chemical Family: Epoxy & Epoxy Derivatives

Technical Data Sheet
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Identification & Functionality

Features & Benefits

Labeling Claims
Ready-to-Use Product Features

Applications & Uses

Application Area
Application Method
Compatible Substrates & Surfaces
Mixing Instructions

Shake component A in a paint shaker for 5 – 10 minutes for optimal results.
Admix by volume:
2 Part Component A (Base)
1 Part Component B (Catalyst)

Add the Catalyst into the Base.
Admixed material should be allowed a 15-minute induction time for best application results.

Reduce: Use reducer PT-1003 Type II no more than 10% by volume.

Application

This product can be applied by brushing, rolling or using conventional air spray equipment, HVLP spray system. Please consult with a PTI representative for specific equipment recommendations and settings.

  1. Make sure pots, guns, and lines are purged and cleaned
  2. Mix both base and catalyst thoroughly and filter/strain before spray application. Note: It is not recommended to strain flat/matte coatings.
  3. HVLP spray pressure: 7-10psi. Conventional spray pressure 15-30psi
  4. Always air-blow and tack wipe the surfaces to be painted. Aircraft should be grounded to prevent static.
  5. Best application results: fullest coverage apply 3 coats: 1 fog/tack coat & 2 full coats 0.6 – 1 mil thickness.
  6. Do not allow more than 48 hours to pass before applying the second coat.
  7. Recommended Dry Film Thickness is 1-2 mils. Some colors may require thicker films to achieve hiding.
  8. For wet sanding or buffing of coating, wait a minimum of 13 hours but not more than 26 hours. Note: If paint is allowed to cure for more than 48 hours wet sanding and buffing is not possible.

NOTE: Application of PTI products requires the use of all OSHA approved safety equipment, including proper ventilation. Additionally, PTI products require the recommended temperature/humidity conditions and film thickness ranges for optimal performance. The material, hangar, and aircraft skin temperatures should be no lower than 75°F / 25°C before, during and after application.

Drying and Curing Schedule

Dry times are based on the dry film thickness between 1-2 mils (25-50 microns).

Air Dry Times (75°F / 25°C and 50% Relative Humidity)
Set to touch: 4 hours
Dry hard: 8 hours
Full chemical: 7 days minimum

Force Dry Times: Must Air Dry For At Least 15 Minutes.
Dry hard: 2 hours at 150⁰F.
Full chemical: After “dry hard” 2 hours at 225⁰F

Equipment Cleaning

Use clean PT-1003 Type II Reducer. Do not allow material to dry or cure inside any equipment.

Recommended Reducers

PT-1003 Type II

Properties

Color
Typical Properties
ValueUnitsTest Method / Conditions
Admixed Solids by Weight67.0%
Admixed Viscosity (max #4 Ford)17.0seconds
Admixed Weight per Gallon8.45lbs.
Coatings VOC340.0g/L
Mix Ratio by Volume2 parts Base to 1 part Catalyst
Pot Life4.0hours
Recommended Dry Film Thickness1 - 2mil
Theoretical Coverage (1 mil thickness)400.0square ft.

Storage & Handling

Shelf Life

Shelf life is only applicable for materials stored in unopened and undamaged original factory filled containers. 1 year when stored between 50°-85° Fahrenheit.