Water-based silicone high-temperature resistant coating-Holy Hong Chemical (Dalian) Co., Ltd.

Water-based silicone high-temperature resistant coating

Waterborne Organic Silicone High-Temperature Coating

Home page

I. Product Description

This product is composed of water-based high-temperature-resistant silicone emulsion, water-based aluminum-silver paste, additives, and water. After curing, it forms an outstandingly performing anti-corrosion coating with low volatile organic compound content and excellent decorative properties. The product exhibits temperature resistance ranging from 150°C to 400°C and can be widely used on substrates such as metals, providing superior protective performance.

II. Recommended Uses

Suitable for application after spraying a water-based inorganic zinc-rich primer or a water-based high-temperature-resistant primer onto bare steel surfaces that have undergone rigorous sandblasting treatment; applicable to various high-temperature-resistant equipment such as blast furnaces, chimneys, boilers, silencers, and petroleum equipment in steel mills.

III. Physical Parameters

Project	Instructions
Color	Silver or as agreed
Specific gravity	1.0-1.1g/cm3
Volume solids content	≥35%

	Drying time		Coating time
Temperature	Surface dry	Hard work	Minimum	Maximum
25℃	60 minutes	24 hours	5 hours	Unlimited

The above data were measured under conditions of a dry film thickness of 25 microns and a relative humidity of 40–60%. Higher coating film thickness, insufficient ventilation, high humidity, or lower temperatures will all prolong the curing time.

4. Film Thickness and Coating Rate

Project	Instructions
Dry film thickness	20–30 microns (surface is not smooth; thickness is for reference only)
Theoretical coating rate	11 m²/kg, 12 m²/L at 25 microns
Actual coating rate	Allow an appropriate loss coefficient.

V. Construction Reference

Project	Instructions
Mixing ratio	Single-component product
Air spraying	Recommended nozzle diameter: 1.5–2.0 mm
Brush coating application	Suitable for pre-coating and small-area repairs
Roller application construction	Suitable for small-area repairs; using a short-nap roller can achieve a better finish.
Time can be made.	After use, any leftover paint should be promptly sealed and stored to prevent skinning and ensure proper usability.
Cleaning equipment	Immediately after use, clean the equipment with clean water. It is also recommended to periodically flush the spraying equipment during the construction process.
Work paused	Do not leave paint in the paint tube, spray gun, or spraying equipment. Thoroughly rinse the equipment with clean water.

6. Surface Treatment

Oil and grease shall be solvent-cleaned according to the SSPC-SP1 standard, sandblasted to Sa2.5 grade or derusted with power tools to St3 grade, achieving a surface roughness of 40–70 microns, and ensuring the surface remains clean and dry.

Due to the nature of water-based coatings, they tend to flow away from sharp edges and corners, creating a “corner effect.” To protect these edges and corners from corrosion, it’s necessary to smooth them down and apply a primer coat beforehand.

Before construction begins, all surfaces must be assessed and prepared in accordance with ISO 8504. When applying water-based coatings, it is crucial to strictly adhere to all cleanliness standards.

VII. Precautions

During construction and drying, the ambient and substrate temperatures must be above 10℃, and the relative humidity should be below 75%. The substrate temperature should be at least 3℃ higher than the dew point, and adequate ventilation must be ensured. Avoid outdoor construction during nighttime when temperatures are low, especially in seasons characterized by condensation or rainfall.

Primer coat: A water-based silicone high-temperature anti-rust primer can be selected, or it can be applied over other high-temperature coatings—compatibility testing is required. For specific matching recommendations, please consult Holy Hong’s technical sales engineers.

The durability of water-based paints largely depends on proper application. For instance, sharp edges, rivets, and areas with spot welding require extra care during application to avoid excessively thick paint films with each coat; it’s best to apply an additional touch-up coat.

Preparation and Cleaning Steps for Construction Equipment:
To prevent water-based coatings from being contaminated by solvents, the spraying equipment must be thoroughly cleaned before use. All equipment that comes into contact with solvents—such as pumps, pipes, and guns—must be completely cleaned according to the steps outlined below:

Before spraying: Circulate and flush the equipment and pipelines with the original solvent-based paint thinner, then use Holy Hong No. 1 thinner, and finally rinse with clean fresh water.

If the construction equipment is made of stainless steel and is specifically designed for applying water-based coatings, this preparation and cleaning work is not required.

8. Storage and Warranty

During storage and transportation, always take care to protect the product from freezing. The recommended storage temperature is between 4°C and 25°C. Store sealed in a cool place, with a shelf life of 12 months.

9. Health and Safety:

Since the paint liquid is not harmless, effective measures should still be taken to prevent skin and eye contact with the coating (such as wearing work clothes, gloves, goggles, face masks, and protective oils). If the product accidentally comes into contact with the skin, thoroughly wash it off with warm water and soap or an appropriate industrial cleaner. If the eyes are contaminated, rinse them with clean water for at least 10 minutes and seek medical attention immediately. It is recommended to wear a ventilated face mask to avoid inhaling paint mist and harmful volatile substances, especially when working in poorly ventilated environments. Disposal of paint waste must comply with national and local regulations.

Statement:

The above information and data are based on laboratory tests and practical experience. Due to individual circumstances (such as construction techniques, testing methods, or improvements in coatings), the data may vary. We reserve the right to modify this instruction manual without prior notice.

You can send it to us by filling out the form, and we’ll get in touch with you!