Epoxy Resin Potable Water Tank Coating XH4205

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Product Description

Solvent-free high-strength epoxy coating. For long-term protection of the internal walls of pipes, storage tanks and storage basins for potable water and industrial wastewater. Complies with GB/T 5749-2006 hygiene standard.

Product Characteristics

• Good sag resistance, allowing a high dry film thickness in one coat
• Excellent water resistance
• Excellent hardness, abrasion resistance and impact resistance
• Good adhesion to both concrete and steel substrates
• Solvent-free, meets environmental requirements

Basic physical and chemical data

Application parameters

Application Methods

*Other recommended thinners are used in different seasons; the recommended heating temperature for two-component airless spray is 50–60 °C.

Theoretical Spreading Rate

Application Data (typical dry film thickness 300 µm)

*The maximum recoat interval depends on the coating exposure environment and use. The minimum recoat interval is data for airless spray with 10% solvent,

For two-component heated spray, the minimum recoat interval is unlimited.

Surface Preparation

All surfaces to be coated shall be clean, dry and free from contaminants. Before coating, all surfaces shall be assessed and prepared in accordance with ISO 8504:2000. When used as a primer, the substrate shall be abrasive blast cleaned to Sa2½ with a surface roughness of 40–75 µm. Before derusting, oil, grease, welding spatter shall be completely removed from the surface and welds and sharp edges shall be ground. If the coating film surface is mechanically damaged and local rusting occurs, local abrasive blast cleaning to Sa2½ or power tool cleaning to St3 is required before local repair. When coating over other old coatings, the surface shall be thoroughly cleaned of chalking, loose old paint, grease and other contaminants by appropriate methods. When coating over inorganic zinc silicate primer or sprayed metal surfaces, an approved tie coat or intermediate coat shall be used. For concrete protection, the concrete shall meet curing requirements, and the water content and surface condition shall comply with relevant regulations.

Precautions

1. During application, ensure ventilation and exhaust, keep away from ignition sources, and wear protective equipment such as masks and gloves. Maintain adequate ventilation during curing. 2. For single-line airless spray, first stir the base component uniformly, then add the curing agent according to the mixing ratio and mix uniformly. Addition of thinner is generally not recommended; if the application equipment cannot meet the spray pressure and atomization requirements, adjust the amount of thinner according to application needs and temperature changes, stir thoroughly and allow to induct. 3. When using two-component airless spray equipment, measure and calibrate the volumes of Component A and Component B on the spray equipment, and operate at the specified heating temperature; the recommended heating temperature is 50–60 °C. 4. Over-thinning will reduce sag resistance and slow curing. 5. When thinner is used, excessive coating thickness will seriously affect drying and curing, recoatability and handling time. To obtain better coating performance, when the film thickness exceeds 200 µm, multiple coats shall be applied to improve coating density. Avoid applying excessive thickness in a single coat at edges, corners, welds and similar areas; once these areas are coated too thick, extend the recoat time of subsequent coats to ensure solvent evaporation from the coating, otherwise cracking may occur during service. 6. After long-term exposure, if chalking occurs on the coating, clean with high-pressure water or sand the surface before applying subsequent coatings. 7. Roller application cannot achieve high film thickness and a good continuous film in a single coat; multiple coats are required. 8. During application and curing, the substrate temperature must be above 10 °C and at least 3 °C above the dew point, and the relative humidity must not exceed 85%. 9. Cutting structures coated with this product generates fumes and dust; appropriate protection shall be provided. 10. When work is paused, do not leave coating in the paint line, spray gun or spray equipment. Thoroughly flush all equipment with thinner. If the pause is too long, it is recommended to mix a fresh batch of paint for application. 11. All equipment shall be cleaned with thinner immediately after use. Periodic flushing of spray equipment during daily work is good practice. Cleaning frequency depends on spray volume, temperature, spray time, including interruption time and other factors. 12. Residual paint and empty cans shall be disposed of in accordance with relevant regional regulations.

Packaging

Storage

Keep sealed in a ventilated, cool, dry place away from sources of ignition. Minimum 12 months.

Safety Precautions

1. For the coating and its recommended thinners, see the safety sheets and the safety data of the relevant materials. This is a solvent-borne coating; avoid inhaling spray mist and solvent vapours, and avoid exposing skin and eyes and contact with uncured paint as far as possible. 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. If welding or flame cutting is required on metal coated with this product, dust and fumes will be generated; 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.