INFRALIT EP 8040-00
Epoxy powder
- Powder coating
- Primer
- Powder coating
- Primer
INFRALIT EP 8040-00 is a powder coating based on epoxy resin. At elevated temperatures the powder will melt, cure and form the final paint film.
INFRALIT EP 8040-00 is used for product coating within the metal industry, e.g. for lighting fixtures, apparatuses, furniture, shop fittings, agricultural and household appliances. Also suitable for use on many special areas in the heavy metal and chemical industry. The resultant paint film has excellent mechanical properties, i.e. good abrasion and impact resistance and elasticity. Film is not scratched easily and withstands action by acids, alkalis, greases and solvents. Its anticorrosive properties are also good. The product can be used for base coating in systems where powder coating is used as topcoat. On outdoor exposure the paint film has a tendency towards chalking. This phenomenon, however, affects only the appearance, not the protective power. An alternative material for outdoor use is INFRALIT Polyester powder, which chalks only very little.
Surface preparation
Remove all grease and dirt with care. Mere degreasing can be done e.g. by trichloroethylene vapour bath or alkali wash. Blast-clean or etch and phosphate rusty and mill-scaled surfaces.
The profile of the blast-cleaned surface must be at least medium (reference comparator "G"). See standard ISO 8503-2 (G).
COLD-ROLLED SURFACES: Degrease by trichloroethylene vapour bath or alkali wash. Application by electrostatic spraying to a film thickness of 80 - 150 µm.
ALUMINIUM SURFACES: Degrease by e.g. alkali wash. Surfaces to be exposed to severe atmospheric conditions should also be chromated.
HOT-DIP-GALVANIZED AND ZINC-ELECTROPLATED SURFACES: Remove grease and white rust by e.g. alkali wash. Depending on exposure conditions, zinc phosphating or chromating is also required.
HOT-ROLLED SURFACES AND CASTINGS: Remove grease and dirt. Blast-clean at least to grade Sa 2½ (ISO 8501-1). The surface profile at least medium (G) ISO 8503-2. Remove the dust.
Blast-cleaning is also recommended for other surfaces, such as cast iron, whenever it is practicable, since it provides an excellent adhesion for epoxy powder.
Curing instruction when used as a primer layer
When INFRALIT EP 8040-00 is applied as a primer, a Pre-cure is recommended prior to topcoat application and cure. During Pre-cure, the primer should be baked for a reduced time compared to the full curing schedule to achieve a uniform melt and leveling without completing the crosslinking process. This method promotes optimal intercoat adhesion during the final curing stage.
Condition after partial cure: The primer must exhibit a smooth, fully melted appearance without dry or unmelted areas.
Handling caution: An undercured film will have reduced mechanical strength and may be brittle. Careful handling of primed components is essential to avoid damage.
Avoid overcuring: Excessive primer curing before topcoat reduces adhesion between layers.
Topcoat application window: Apply the topcoat preferably right after cooling down to 50°C but latest within 48 hours of priming to maintain surface reactivity and minimize contamination risks.
Final cure requirements: After topcoat application, cure at a minimum 200°C (substrate temperature) and ensure full crosslinking of both coating layers. If the topcoat’s curing schedule specifies a higher temperature and/or longer time than mentioned for the primer, always follow the topcoat manufacturer’s instructions.
For additional guidance or clarification, please contact Teknos Technical Support or Sales Department.
Storage
The storage life is minimum 18 months in dry and cool conditions when the temperature during storage and transportation is max. +25°C.
Take special care during high temperature seasons. Avoid storing close to heat sources and heaters in trucks and storages. Don’t store in direct sunlight. The recommended expiry date of the powder coating that has been stored according to the instructions is shown on the package label.
| Gloss | Matt |
|---|---|
| Practical spreading rate | 4 - 15 m²/kg depending on the film thickness. |
| Spraying | TRIBO/CORONA |
| Curing time | 10 min/200°C (metal temperature) |
| Colours | By agreement. |
| Packages | 15 kg or 20 kg according to the density of the powder. |
| Safety markings | See safety data sheet. The powder itself is non-flammable, but with air it can form an explosive mixture that in presence of adequate ignition energy ignites. The lower explosion limit of typical powder coatings is between 20 g/m³ and 80 g/m³ (CEPE, Safe Powder Coating Guideline 8th Edition, 2020). Ventilation of the spray booth should be adjusted so that the concentration of powder in the air is less than 50% of the lower explosive limit value. On calculation of the powder concentration in the spray booth, the powder deposited on the workpiece is not taken into account. In order to avoid the discharge of powder from the booth into adjacent working spaces, the speed of air flow in the apertures of the booth must not fall below 0.5 m/s. Spray painters should wear dust masks and protective gloves. Any spatter of powder on the skin should be washed off with water and soap. |
| Gloss value | 9-19 |