3. PROMEK – ECRA-SHM – Dip coating

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Application

Corrosion Protection
Reduce Mould and Bacteria
Keep coil clean long
Saving Energy

PROMEK-Brochure-2020 ECRA-SHM DATA SHEET 2020

Promek ECRA-SHM is a water based self-etching epoxy resin is supplied various colours at the required viscosity used for the coating of all ferrous and non-ferrous metals (as used in A/C coil manufacture) to give long term corrosion protection.

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Specification

Colour : Translucent, light blue / green / black finish (colour can be adjusted to meet manufacturer’s needs).
Super Hydrophobic: Additive to increase condensation and improve corrosion resistance.
Gloss Level: Full.
Chemical Resistance: Excellent (with the exception of strong alkalis or oxidising chemicals), see chemical resistance information. In addition, the ECRA SHM demonstrates excellent resistance to fumes from the following: Lactic Acid, Oxalic Acid, Humic Acid and Saltwater.
Temperature Range:Up to 180 °C
Fin pattern: Standard and also suitable for enhanced fin designs
Fin Type: Aluminium, Copper and all Ferrous and Non Ferrous Metals
Application Method: Total Coil Immersion or spraying
Immersion Cycle: Dependent upon coil size
Curing Cycle:Dependent upon coil size
Film thickness: 7-9 microns d.f.t. (dry film thickness) per coat
Heat Transfer: Negligible impairment at the given thickness 85 grams/Litre

Neutral Salt Spray:

5000 hrs ASTM B117 (AS 2331.32 – 1980) Source: Hawker de Havilland (Boeing)
ASTM B117 (American Standards Test Method) and AS 2331.32 -‐‑ 1980 (Australian Standard) are test procedures used for the Neutral Salt Spray testing

Acidified Salt Spray:

2000 hrs ASTM G85 A5 Source Jotun Malaysia
2000 hour American Standards Test Method used with the very aggressive corrosion testing using the Acidified Salt Spray testing

ECRA SHM is also resistant to the following materials:

Food acids: Vinegar, Milk and Diary products, Confectionary, Citric Acid, Oleic Acid, Oxlic Acid, Allyl Sulphide ( from onion and garlic)
Vegetable and fruits contain various acids which mainly attack to copper.
Environmental /Ambient: H2S, Nitrous Oxides ( Car emission) found in various concentrations near transport routes. CO2 wide ambient presence. Salt spray, acidified salt spray where is coastal, near coastal regions leading to corrosion of aluminum and other anodic metals.
Alcohol beverages manufacturer/ processing: Ethanol vapors, wood processing where Humic Acid selectively and rapidly attacks copper tube of coils during timber drying/aging. Hydrochloric acid vapor from metal foundries.

Feature

Advantages: The coating provides protection from environmental and chemical exposures. It is a long-term protective coating that improves the long-term efficiency (structural and performance) of the system. The efficiency improvements come from four distinct features of the product.

SUPER Hydrophobic

The permanent super hydrophobic surface improves condensation characteristics and allows for faster run off of the condensate which improves heat exchange. The super hydrophobic surface also reduces dirt and dust consolidation reducing cleaning of the coil.

Corrosion Protection

The entire surface of the coil is protected, including tubes, which remain free of corrosion allowing the coil to maintain its long-term heat exchange efficiency.

Reduce Mould and Bacteria

The coating contains permanent Ag+ technology (Ag+ = Silver ion) reducing mould and bacteria growth within the coil. The coil stays clean and free of micro-biological contamination. A clean dry, bio-film free coil uses far less energy than a wet dirty coil.

Very Thin

The coating is only 6-8 microns which does not affect heat exchange or air flow Indoor Air Quality Treatment:

Silver Ion additive to complete kill all bacteria, viruses and mould that comes into contact with the heat exchange surface.
Permanent disinfectant additive added within the resin as a HYBRID to maximise exposure and durability of the disinfectant.
Strong adhesion of the resin to all metal substrates including copper, aluminium and galvanised steel.
Five plus years long term microbial protection

Registration of Anti Bacteria Additive