Epoxy Zinc-rich Primer XH4028HC is a zinc-rich primer of the epoxy coating system. An epoxy zinc dust coating used as a high-performance anti-corrosive primer for corrosion protection of facilities and equipment in severe environments such as petrochemical plants, chemical plants, power plants, bridges and offshore structures; it meets the requirements of ISO 12944 for zinc dust primers. Parameters on this page: volume solids 66 ± 2%, dry film thickness 60/80/100 µm, theoretical spreading rate 6.5 m²/L.
Parameter source: T&H manufacturer's Technical Data Sheet (TDS) "Epoxy Zinc-rich Primer XH4028HC"; 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 | 66 ± 2% |
|---|---|
| Dry Film Thickness | 60/80/100 µm |
| Theoretical Spreading Rate | 6.5 m2/L |
| VOC | 330g/L |
| Density / Specific Gravity | 2.43kg/L |
| Number of Components | Two-component |
| Flash Point | 25°C |
| Thinner | 0-10% |
| Mixing Ratio | Base : curing agent = 16:1 (by weight), 84:16 (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, bridges and offshore structures, complying with the ISO 12944 requirements for zinc dust primers.
| Colour | Zinc grey |
|---|---|
| Gloss | N/A |
| density | 2.43kg/L |
| Volume Solids | 66±2% |
| Volatile Organic Compounds | 330g/L |
| Flash Point | 25°C |
| Mixing ratio | Base : curing agent = 16:1 (by weight), 84:16 (by volume) |
| Typical dry film thickness | 60µm |
|---|---|
| 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 | 8h | 6h | 12h | / |
| 25°C | 1h | 6h | 4h | 8h | / |
| 40°C | 50min | 4h | 2h | 6h | / |
*The maximum recoat interval depends on the exposure environment and the end use of the coating.
All surfaces to be coated must be clean, dry and free of contaminants. Before application, all surfaces must be assessed and prepared in accordance with ISO 8504:2000. Abrasive blast clean to Sa 2½, with surface roughness 40–75 µm. Before rust removal, remove all oil and weld spatter and grind welds and sharp edges. Areas of the coating damaged mechanically and showing localised rust must be spot blast cleaned to Sa 2½ or cleaned with power tools to St 3 before local repair with this primer. If the old film shows chalking or zinc salts, remove the zinc salts and contaminants 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. The coating contains special fillers that improve intercoat adhesion, so a thin coating appears rough, but this does not affect anticorrosive performance. 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.
| 14 L per unit | Base 11.8 L | Curing agent 2.2 L |
| 34 kg per unit | 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. See the safety sheet and the safety data of the relevant materials for the coating and recommended thinner. This is a solvent-borne coating; inhalation of spray mist and solvent shall be avoided, and skin and eyes kept from exposure and contact with wet paint. 2. All work related to the application and use of this product shall be carried out in accordance 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; suitable personal protective equipment and adequate local exhaust ventilation are 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.
The factory item numbers of Epoxy Zinc-rich Primer XH4028HC are as follows.Item No.is the most accurate form when ordering;Colour/colour codecorresponds to the actual colour (RAL, GSB are colour chart codes);Packaging SpecificationsFactory complete-set specification format. Colors not listed may be ordered against the colour card.
| Item No. | Colour / colour code | Packaging Specifications |
|---|---|---|
| XH4028HC | — | 34 KG |
This model has a total of1item numbers, all listed on this page; colours outside the table (including special colours and bulk packaging) can be confirmed by phone, delivery dates are advised according to the factory's current production schedule and stock. In the packaging specification, the "+" indicates the complete-set notation for two-component products (base + curing agent), subject to the factory specification; a "—" in the colour column denotes an auxiliary product, or that the item has no colour code in the factory system.
