Water-borne Epoxy Zinc-rich Primer XH4726 is a zinc-rich primer in a water-borne system. Water-borne two-component epoxy zinc-rich coating, used as a high-performance anti-corrosion primer for the corrosion protection of facilities and equipment in harsh environments such as petrochemical plants, chemical plants and power plants; performance and composition conform to HG/T3668. Parameters on this page: volume solids 48 ± 2%, dry film thickness 60/80/90 µm, theoretical spreading rate 5.3 m²/L.
Parameter source: T&H manufacturer's Technical Data Sheet (TDS) "Water-borne Epoxy Zinc-rich Primer XH4726"; spreading rate and other values are converted from the TDS parameters and provided for product selection reference only.
The above content is compiled from the manufacturer's datasheet and this site's parameter tables. For selection, coating systems and lead times, pleaseContact Usfor confirmation.
This page carries the full TDS for this product, translated from the manufacturer's original document. No file download is needed; for an original-language copy, send an enquiry.
| Volume Solids | 48 ± 2% |
|---|---|
| Dry Film Thickness | 60/80/90 µm |
| Theoretical Spreading Rate | 5.3 m2/L |
| VOC | 220g/L |
| Density / Specific Gravity | 2.2kg/L |
| Number of Components | Two-component |
| Thinner | 0-5% |
| Mixing Ratio | Base : curing agent = 3.5:1 (by weight), 52:48 (by volume) |
| Colour / Appearance | Zinc grey |
For more Q&A on selection, application, acceptance and defect diagnosis, seeFAQsection.
Thinner: deionised water
Water-borne two-component epoxy zinc-rich coating, used as a high-performance anti-corrosion primer for the corrosion protection of facilities and equipment in harsh environments such as petrochemical plants, chemical plants and power plants; performance and composition conform to HG/T3668.
| Colour | Zinc grey |
|---|---|
| Gloss | N/A |
| density | 2.2kg/L |
| Volume Solids | 48±2% |
| Volatile Organic Compounds | 220g/L |
| Flash Point | Base 12 °C, hardener >100 °C |
| Mixing ratio | Base : curing agent = 3.5:1 (by weight), 52:48 (by volume) |
| Typical dry film thickness | 80µm |
|---|---|
| Recommended dry film thickness | 60–90 µm, depending on system requirements |
| Induction time (20 °C) | 10~15min |
| Thinner quantity (by volume) | Airless spray 0–5% | Air spray 0–10% | Roller or brush 0–5% |
| Recommended nozzle size | 0.43~0.64mm | 2.0~3.0mm | None |
| Recommended spray pressure | 15~20MP | 0.3~0.6MPa | None |
| Application suitability | Recommended | Applicable | Suitable for small-area repair |
*Do not add water arbitrarily; for the maximum water addition, refer to the Precautions.
| Dry film thickness (µm) | 60 | 80 | 90 |
| Wet film thickness (µm) | 125 | 167 | 187 |
| Theoretical spreading rate (m²/L) | 8 | 6 | 5.3 |
Application data (typical dry film thickness 60 µm, RH = 55%):
| Temperature | Surface Dry | Hard Dry | Pot Life | Recoat interval | |
| Minimum | Maximum* | ||||
| 10°C | 4h | 36 | No data | 36h | / |
| 15°C | 2h | 24 | 4 | 24h | / |
| 25°C | 1h | 18 | 4 | 24h | / |
| 40°C | 40min | 12 | 2 | 24h | / |
*The maximum recoat interval depends on the exposure environment and the end use of the coating.
1. All surfaces to be coated shall be clean, dry and free of contaminants. Prior to coating, all surfaces shall be assessed and prepared in accordance with ISO 8504:2000. 2. Blast clean to Sa2½ with a surface roughness of 40–75 µm. Before derusting, remove all oil, grease and welding spatter from the surface and grind welds and sharp edges. Where a coating film of this product is mechanically damaged and local rusting occurs, local blast cleaning to Sa2½ or power tool cleaning to St3 shall be carried out before local repair with this primer. If chalking or zinc salts appear on the surface of the old coating film, remove the zinc salts and contaminants from the surface before applying the intermediate coat or topcoat.
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 as well. 2. When mixing, first stir the base uniformly, then add the curing agent according to the mixing ratio and mix uniformly. Adjust the water amount according to application requirements and temperature changes, stir thoroughly and allow to induct. Filtration through a 120-mesh screen before use is recommended, and keep stirring during use. Note: Do not add water directly to the zinc powder component; water may be added for dilution only after thorough mixing with the curing agent, otherwise the zinc powder component will precipitate and the paint will be scrapped. 3. Excessive water dilution will cause flocculation and precipitation of the coating or reduce sag resistance. The water amount must not exceed 7% of the total weight of the mixed coating. 4. This product is suitable only for application on blast-cleaned steel surfaces and on approved epoxy zinc powder coatings and inorganic zinc silicate coatings; it must not be applied over other types of coatings. Alkyd and alkyd-modified coatings must not be applied directly over the coating of this product. 5. 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 80%. In low-temperature and high-humidity environments, film drying will slow down significantly and flash rusting may even occur. Compared with solvent-borne zinc powder coatings, this product requires greater consideration of temperature, humidity and ventilation conditions during application. 6. Cutting structures coated with this product generates fumes and dust; appropriate protection shall be provided. 7. This product is not suitable for underwater use. 8. In low-humidity and high-temperature seasons, avoid dry spray or excessive film thickness during application. Applying the subsequent coat over a dry-sprayed coating may cause pinholes, and excessive film thickness will prolong curing time, handling time and recoating time. Coating thickness must match the surface roughness; low film thickness shall not be applied on surfaces with high roughness, and excessive film thickness shall be avoided. 9. When work is suspended, do not leave coating in paint lines, spray guns or spray equipment. Flush all equipment thoroughly with clean water. If the suspension is too long, it is recommended to mix a fresh batch of paint for application. 10. All equipment shall be cleaned with clean water immediately after use. During cleaning, special attention shall be paid: the base that has not been fully mixed and emulsified with the curing agent will form flocculent matter when cleaned with water, and may even cause gun blockage. Periodically flushing spray equipment during daily work is a good practice. The flushing frequency depends on spray volume, temperature, spray time, including interruption time and other factors. 11. Residual paint and empty cans shall be disposed of in accordance with relevant regional regulations.
| 36 kg per unit | Base 28 kg | Curing agent 8 kg |
| 16.5 L per unit | Base 8.5 L | Curing agent 8 L |
*In some special cases, other packaging sizes may be used.
Store sealed in a ventilated, cool and dry place, away from ignition sources, for a minimum of 6 months.
1. For the coating and its recommended thinners, see the safety sheets and the safety data of the relevant materials. 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.
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.
Packaging specifications and batch lead times are subject to actual availability. PleaseContact Uscontact us for project-based calculation.
