Epoxy Zinc-rich Primer XH4027HB is a zinc-rich primer of the epoxy coating system. An epoxy zinc-rich coating used as a high-performance anti-corrosive primer for the corrosion protection of facilities and equipment such as petrochemical plants, chemical plants, power plants and bridges in harsh environments; its performance and composition meet the requirements of HG/T3668. Parameters on this page: volume solids 65 ± 2%, dry film thickness 60/80/100 µm, theoretical spreading rate 6.5 m²/L.
Parameter source: T&H original technical data sheet (TDS) for Epoxy Zinc-rich Primer XH4027HB; spreading rate and other values are converted from 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 | 65 ± 2% |
|---|---|
| Dry Film Thickness | 60/80/100 µm |
| Theoretical Spreading Rate | 6.5 m2/L |
| VOC | 340g/L |
| Density / Specific Gravity | 2.27kg/L |
| Number of Components | Two-component |
| Flash Point | 25°C |
| Thinner | 0-10% |
| Mixing Ratio | Base : curing agent = 16:1 (by weight), 85:15 (by volume) |
For more Q&A on selection, application, acceptance and defect diagnosis, seeFAQsection.
An epoxy zinc-rich coating used as a high-performance anti-corrosive primer for the corrosion protection of facilities and equipment such as petrochemical plants, chemical plants, power plants and bridges in harsh environments; its performance and composition meet the requirements of HG/T3668.
| Colour | Zinc grey |
|---|---|
| Gloss | N/A |
| density | 2.27kg/L |
| Volume Solids | 65±2% |
| Volatile Organic Compounds | 340g/L |
| Flash Point | 25°C |
| Mixing ratio | Base : curing agent = 16:1 (by weight), 85:15 (by volume) |
| Typical dry film thickness | 80µm |
|---|---|
| Recommended dry film thickness | 60–100 µm, depending on system requirements |
| Induction time (20 °C) | 10~15min |
| Thinner quantity (by volume) | Airless spray 0–10% | Air spray 10–20% | Roller or brush 0–10% |
| Recommended nozzle size | 0.43~0.64mm | 2.0~3.0mm | None |
| Recommended spray pressure | 15~20MPa | 0.3~0.6MPa | None |
| Application suitability | Recommended | Applicable | Suitable for small-area repair |
*Use a slow thinner in hot weather
| Dry film thickness (µm) | 60 | 80 | 100 |
| Wet film thickness (µm) | 92 | 123 | 154 |
| Theoretical spreading rate (m²/L) | 10.8 | 8.1 | 6.5 |
| Temperature | Surface Dry | Hard Dry | Pot Life | Recoat interval | |
| Minimum | Maximum* | ||||
| 5°C | 2h | 24h | No data | 24h | / |
| 15°C | 1.5h | 12h | 6h | 12h | / |
| 25°C | 1h | 8h | 4h | 12h | / |
| 40°C | 50min | 6h | 2h | 8h | / |
*The maximum recoat interval depends on the exposure environment and the end use of the coating.
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. Abrasive blast cleaning to Sa2½, surface roughness 40–75 µm. Before derusting, oil, grease and welding spatter shall be removed completely from the surface, and welds and sharp edges ground. Where a paint film of this coating has suffered mechanical damage and localised rusting, the affected areas shall be locally abrasive blast cleaned to Sa2½ or power tool cleaned to St3 before local repair of the primer is carried out. If chalking or zinc salts appear on the surface of the old paint film, remove the zinc salts and contaminants from the surface before applying the intermediate coat or topcoat.
1. Ensure ventilation and air extraction during application, keep away from ignition sources, and wear protective equipment such as masks and gloves; maintain adequate ventilation during curing. 2. When mixing, first stir the base uniformly, then add the hardener in the specified ratio and mix uniformly. Adjust the thinner quantity according to application requirements and temperature variation, stir thoroughly and allow to induct. Filtration through a 120-mesh screen before use is recommended, and continuous stirring is required during use. 3. Excessive addition of thinner will reduce sag resistance; the thinner quantity must not exceed the limits of environmental regulations. 4. This product is suitable only for application to abrasive blast cleaned steel surfaces and to approved epoxy zinc powder coatings and inorganic zinc silicate coatings, and must not be applied over other types of coating. Alkyd and alkyd-modified coatings must not be applied directly over a coating of this product. 5. During application and curing, the substrate temperature must be above 5°C and at least 3°C above the dew point, and the relative humidity must not exceed 85%. 6. Cutting structures coated with this paint generates fume and dust; suitable protection shall be provided. 7. This product is not suitable for underwater service. 8. During application, dry spray and over-application shall be avoided as far as possible; applying the next coat over a “dry spray” film may cause pinholing, and over-application will extend curing, handling and recoating times. Coating thickness must match the surface roughness; a low film thickness shall not be applied to a surface with high roughness, and over-application shall be avoided. The paint contains special fillers that improve intercoat adhesion, so the film appears relatively rough at low thickness, which does not affect anti-corrosive performance. 9. When work is paused, do not leave paint in the hose, spray gun or spray equipment. Flush all equipment thoroughly with thinner. If the pause is too long, mixing a fresh batch of paint for application is recommended. 10. All equipment shall be cleaned with thinner immediately after use. Flushing spray equipment at regular intervals during daily work is good practice. Cleaning frequency depends on spray volume, temperature, spraying time and interruption time. 11. Surplus paint and empty containers shall be disposed of in accordance with the relevant regional regulations.
| 15 L per unit | Base 12.8 L | Curing agent 2.2 L |
| 34 kg per set | Base 32 kg | Curing agent 2 kg |
*In some special cases, other packaging sizes may be used.
Keep sealed in a ventilated, cool, dry place away from sources of ignition. Minimum 12 months.
1. For the paint and recommended thinner, refer to the safety data sheet and the safety data for the related materials. This is a solvent-borne paint; inhalation of paint mist and solvent must be avoided, exposure of skin and eyes shall be minimised, and contact with wet paint shall be avoided. 2. All work relating to the application and use of this product must be carried out in accordance with the various relevant national health, safety and environmental standards and regulations. 3. Welding or flame cutting of metal coated with this product generates dust and fume; suitable personal protective equipment and adequate local ventilation are therefore required.
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.
