Epoxy Zinc-rich Primer XH4027L is a zinc-rich primer of the epoxy coating system. As an epoxy zinc dust coating, it is used as a high-performance anti-rust primer for the corrosion protection of facilities and equipment in harsh environments such as petrochemical plants, chemical plants, power plants and bridges; its performance and composition meet the requirements of HG/T3668. Parameters on this page: volume solids 58 ± 2%, dry film thickness 50/80/100 µm, theoretical spreading rate 5.3 m²/L.
Parameter source: T&H original technical data sheet (TDS) for Epoxy Zinc-rich Primer XH4027L; 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 | 58 ± 2% |
|---|---|
| Dry Film Thickness | 50/80/100 µm |
| Theoretical Spreading Rate | 5.3 m2/L |
| VOC | 410g/L |
| Density / Specific Gravity | 2.3 kg/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 dust coating used as a high-performance anticorrosive primer for the corrosion protection of facilities and equipment in severe environments such as petrochemical plants, chemical plants, power plants and bridges; performance and composition comply with HG/T 3668.
| Colour | Zinc grey |
|---|---|
| Gloss | N/A |
| density | 2.3 kg/L |
| Volume Solids | 58±2% |
| Volatile Organic Compounds | 410g/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 | 50–100 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) | 50 | 80 | 100 |
| Wet film thickness (µm) | 91 | 145 | 182 |
| Theoretical spreading rate (m²/L) | 10.6 | 6.6 | 5.3 |
| 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 | 8h | / |
| 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 contamination. Before application, all surfaces shall be assessed and prepared in accordance with ISO 8504:2000. Blast clean to Sa2½ with a surface profile of 40–75 µm. Before derusting, remove all oil, grease and weld spatter, and grind welds and sharp edges. Where the coating film has suffered mechanical damage with localised rusting, spot blast to Sa2½ or power-tool clean to St3 before local repair of the primer. If the old film shows chalking or zinc salts, remove the zinc salts and contamination before applying the intermediate coat or topcoat.
1. During application, ensure good ventilation and exhaust, keep away from ignition sources, and wear a mask, gloves and other protective equipment; adequate ventilation shall also be maintained during curing. 2. When mixing, first stir the base thoroughly, then add the curing agent in the specified ratio and mix uniformly; adjust the thinner amount according to application requirements and temperature changes, mix and induce thoroughly, strain through a 120-mesh sieve before use, and stir continuously during use. 3. Excessive thinner reduces sag resistance; the thinner amount shall never exceed the limits of environmental regulations. 4. The product is suitable only for application over blast-cleaned steel surfaces and over approved epoxy zinc dust and inorganic zinc silicate coatings, and shall not be applied over other types of coatings. Alkyd and alkyd-modified coatings shall not be applied directly over this product. 5. During application and curing, the substrate temperature shall be above 5 °C and at least 3 °C above the dew point, and the relative humidity shall not exceed 85%. 6. Cutting structures coated with this coating produces fumes; appropriate protection shall be taken. 7. The product is not suitable for underwater use. 8. During application, avoid dry spray and over-thick application. Over a dry-sprayed coat, pinholes may appear when the next coat is applied; over-thick application extends curing, handling and overcoating times. The film thickness shall match the surface profile; a low film thickness shall not be applied over a high-profile surface, and over-thick application shall also be avoided. 9. When work is interrupted, do not leave paint in hoses, spray guns or spray equipment. Flush all equipment thoroughly with thinner. If work is interrupted for too long, remix a fresh batch of paint before resuming. 10. All equipment shall be cleaned with thinner immediately after use. Periodically flushing spray equipment during the daily work is good practice. The frequency of cleaning depends on the quantity sprayed, temperature, spraying time and interruptions. 11. Remaining paint and empty cans shall be disposed of in accordance with relevant local regulations.
| 34 kg per unit | Base 32 kg | Curing agent 2 kg |
| 14.5 L per unit | Base 12.3 L | Curing agent 2.2 L |
*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 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.
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.
