HI-AQU 8485 Water-borne Epoxy MIO Intermediate Coat

Browse Similar Models by CategoryThis model belongs to: Intermediate Coat, Water-borne, Epoxy

Product description

HI-AQU 8485 Water-based Epoxy Micaceous Iron Oxide Intermediate Coat is a two-component, fast-drying water-based epoxy micaceous iron oxide paint with excellent system corrosion protection and application performance.

Product use

As an environmentally friendly water-based paint with excellent coating system performance, it can be used as an intermediate coat in coating systems for new construction and maintenance of steel structures in moderate to severe corrosive atmospheric environments, such as bridges, petrochemical facilities, municipal engineering, the power industry, port machinery, and mining equipment. For corrosion protection of the inner walls of non-exposed steel box girders, it can be used as a primer/topcoat.

Physical properties

Surface Preparation

Remove oil and grease in accordance with SSPC-SP1 solvent cleaning.

Abrasive blast clean to Sa 2½ (ISO 8501-1:2007) or SSPC-SP6 (SSPC-SP10 gives better results). If the blasted surface oxidises before application, it must be re-prepared to the specified standard. Surface defects exposed after blasting must be ground, filled or otherwise suitably treated. Surface roughness should be 40–75 µm.

Repair of damaged areas: Where damaged areas reach the substrate, primer treatment requirements shall apply; abrasive blast cleaning to Sa21/2 (ISO8501-1:2007) or SSPC-SP6 is normally required (for ideal performance, blast clean to SSPC-SP10). If local areas cannot be blasted, mechanical grinding to St3 (ISO 8501-1:2007) is permitted. If the substrate is not reached, roughen the surface and clean it according to the application process requirements, then apply the primer or HI-AQU 8485 in sequence according to the coating system.

Before application of HI-AQU 8485, ensure the surface to be coated is clean and dry, and application must be carried out within the specified recoat interval (refer to the relevant product application instructions).

Other surfaces: if this coating is to be applied to other surfaces, consult the Nippon Paint Industrial Coatings Protective Coatings division.

Application is not recommended at ambient temperatures below 5 °C or above 50 °C, or relative humidity above 75%; steel

Application conditions

The temperature should be at least 3 °C above the dew point of the surrounding air.

Application guidance

The base and curing agent must be mixed thoroughly before use.

Once mixed, use within the pot life.

Application method

Roller/brush/air spray: for touch-up and small-area application. Airless spray: for large-area application. Regardless of the method, the specified dry film thickness must be achieved.

Application parameters

Note: *Before overcoating, the surface shall be free of chalking and contamination. When the film has been exposed outdoors for a long time and the surface is smooth or contaminated, overcoat adhesion may be affected; therefore the film surface shall be abraded, sweep-blasted or high-pressure water-jetted to ensure adequate adhesion.

The data above are for guidance only. Actual recoat and drying times may be shorter or longer depending on film thickness, ventilation, humidity, coating system, and prior hand or mechanical preparation conditions.

The following primers/topcoats can be recommended for use with HI-AQU 8485 Water-based Epoxy Micaceous Iron Oxide Intermediate Coat

Recommended system

Primer

• HI-AQU 8494 Water-based Epoxy Zinc-rich Primer
• HI-AQU 8471 Water-based Epoxy Primer

Topcoat

• HI-AQU 8430 Water-borne Epoxy Topcoat
• HI-AQU 8660 Water-borne Polyurethane Topcoat

Select the coating system according to the specific requirements; refer to the product manual or contact Nippon Paint for professional guidance.

Packaging; curing agent

Hardener: 6 months (25°C). Storage shall comply with national regulations. The product shall be stored in a sealed container in a dry, cool, and well-ventilated warehouse, away from heat and ignition sources. The above is the minimum shelf life; after expiry, testing is required to determine whether continued use is acceptable.

• Thin with deionised water; tap water may contain unknown impurities that affect coating performance.

Precautions

• Stir thoroughly before use to ensure uniform mixing.
• Thinned paint settles faster; stir while applying.
• Once opened, use the coating in one operation.
• At low ambient temperature or high relative humidity, drying slows; force drying may be used to speed it up.
• For professional use only. Refer to the safety information on the packaging and the Safety Data Sheet (SDS) before use.
• Use in a well-ventilated area. Avoid skin contact. In case of accidental splashes on skin, wash immediately with a suitable cleaner or soap and water.
• In case of eye contact, rinse immediately with plenty of clean water and seek medical examination.
• If swallowed, seek medical attention as soon as possible.
• Maintain good ventilation during application.
• If in doubt about the use of this product, consult Nippon Paint.

All information in this product data sheet is based on laboratory tests and practical experience. However, since the product is subject to many unforeseeable and uncontrollable factors in actual use, we guarantee only the quality of the product itself. Read this data sheet carefully and confirm with Nippon Paint that it is the latest version before using the product.

We reserve the right to modify this product data sheet without prior notice.

Information is subject to the manufacturer's latest version; the manufacturer's latest TDS prevails.
The technical parameters on this page are taken from the product's original manufacturer technical datasheet, the copyright of which belongs to the manufacturer. If a rights holder considers the presentation inappropriate, contact us for verification and handling.