Water-borne Epoxy Anti-corrosive XH4704

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Thinner: deionised water

Product Description

A two-component water-borne epoxy anticorrosive primer; as a high-performance water-borne primer, suitable for anticorrosive protection of steel structures, facilities and equipment, and also for the protection of superstructure facilities and cabin interiors of sand carriers and cargo ships.

Product Characteristics

• Fast-drying performance
• Good water resistance and anticorrosive performance
• Easy to apply, compliant with environmental regulations

Basic physical and chemical data

Application parameters

Application Methods

Theoretical Spreading Rate

Application data (typical dry film thickness 80 µm, RH = 55%):

*The minimum recoat interval depends on the type of subsequent coat; the maximum recoat interval depends on the exposure environment and use of the coating. For

coating systems outside the recommendations, carefully evaluate the recoat interval and compatibility when overcoating this primer. Full cure time under different conditions (typical film thickness 80 µm): at 25 °C, RH = 55%, full cure takes at least 14 days.

Surface Preparation

All surfaces to be coated must be clean, dry and free of contaminants. Before coating, all surfaces should be assessed and prepared to ISO 8504:2000. For steel structures, blast-clean the substrate to Sa 2½ with a surface roughness of 40–75 µm. Before derusting, remove oil/grease and weld spatter and smooth welds and sharp edges. Where a coated film is mechanically damaged or shows local rusting, prepare by local blast cleaning to Sa 2½ or power tool cleaning to St 3 before local repair of the primer. If the old film chalks, remove the surface contaminants before applying the intermediate or topcoat.

Precautions

1. During application, ensure ventilation and exhaust, and wear protective equipment such as masks and gloves; maintain adequate ventilation during curing; good ventilation gives faster drying. 2. When mixing, first stir the base thoroughly, then add the hardener in the specified ratio and mix evenly; adjust the thinner quantity according to application needs and temperature, mix thoroughly and allow induction. Strain through a screen before use and keep stirring during use. 3. Adding too much water reduces sag resistance. In particular, thinning with tap water increases soluble chloride ions in the coating and raises the risk of flash rust on the substrate. 4. During application and curing, the temperature should be above 10 °C and relative humidity no more than 80%. High humidity markedly slows drying, especially on blast-cleaned steel, where slow drying and moisture retention increase the risk of flash rust. 5. For wet-on-wet application, apply the subsequent coat only after the primer surface has no visible water film, and carefully evaluate compatibility. 6. Cutting structures coated with this product produces fumes and dust; take appropriate protection. 7. This product is not suitable for immersion environments. 8. Avoid dry spray and over-application; applying the next coat over a dry-sprayed film may cause pinholes, and over-application extends curing, handling and recoating times. The film thickness must match the surface roughness; do not apply low film thickness on high-roughness surfaces, while also avoiding over-application. 9. During work breaks, do not leave paint in the hose, spray gun or spray equipment. Flush all equipment thoroughly with clean water. If the break is too long, mix a fresh batch of coating for application. 10. Clean all equipment with clean water immediately after use. Flushing spray equipment regularly during work is good practice. Cleaning frequency depends on spray volume, temperature and spraying time including interruptions. 11. Dispose of leftover paint and empty cans in accordance with local regulations.

Packaging*

Storage

Store sealed in a ventilated, cool, dry place; storage temperature must not be below 5 °C or above 40 °C; 6 months at 5–35 °C.

Safety Precautions

1. Although this is a water-borne coating, avoid inhaling spray mist, minimise skin and eye exposure, and avoid contact with wet paint. 2. All work related to the application and use of this product must comply with the relevant national health, safety and environmental standards and regulations. 3. Welding or flame cutting on metal coated with this product produces dust and fumes; use appropriate personal protective equipment and adequate local ventilation. 4. If in doubt about the suitability of this product, consult the company.

Scope of liability

The information provided in this product data sheet is based on laboratory test results that we consider accurate, and is provided for application guidance only. All recommendations and advice given by T&H on the use of T&H products, whether in technical documents, special consultation or otherwise, are based on information we consider most reliable. Our products and the information provided are intended for users with the necessary knowledge and industrial experience, and it is for these end users to determine whether the products are suitable for their use. T&H cannot control the quality and condition of the substrate, nor the various factors affecting the use of the product. Therefore, T&H accepts no liability for any loss, injury or damage arising from the use of our products or from reliance on this product data sheet (unless otherwise agreed in writing). Data in this product data sheet may be revised as necessary based on practical experience and continued product development.

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.