Heat-resistant paint is a specialized coating engineered to endure extreme temperatures, typically up to 750°C. Its primary application is on industrial metal surfaces such as incinerators, furnaces, and pipelines. In addition to its heat tolerance, this paint provides effective protection against corrosion, making it especially valuable in high-temperature environments or areas under insulation.

It is crucial to differentiate heat-resistant paint from intumescent or fire-retardant coatings. While heat-resistant paint withstands high temperatures, fire-retardant coatings are designed to inhibit flame spread, mitigating fire hazards.

Types of Heat-Resistant Paint

Heat-resistant paints come in a variety of formulations tailored to specific industrial needs. Below are the primary categories:

1. Epoxy Coatings

Epoxy coatings are widely utilized in the petrochemical and oil industries due to their exceptional resistance to impact and abrasion. These thermosetting materials remain stable under extreme heat without melting. However, they may fade or degrade under prolonged direct sunlight exposure.

2. Epoxy Phenolic

Designed for optimal performance when heat-cured at 175–200°C, epoxy phenolic coatings offer excellent adhesion, heat resistance, and chemical resistance. Increasing the phenolic content enhances chemical durability but may reduce flexibility, making this coating suitable for high-stress environments.

3. Epoxy Novolac

This variant is primarily used in crude oil and tanker industries for its strong resistance to oxidizing and non-oxidizing acids. It performs well in environments with temperatures between 175–182°C, offering long-lasting protection against harsh conditions.

4. Silicone Coatings

Silicone coatings are ideal for outdoor steel surfaces, such as exhaust stacks and boilers. They initially dry through air exposure but require curing at temperatures of at least 175°C to achieve their full protective potential.

5. Modified Silicone

Modified silicone coatings are less heat-resistant than standard silicone, with optimal performance at approximately 125°C. These coatings are often chosen for their glossy finish and adaptability to specific project needs.

6. Multi-Polymeric Matrix

Comprising fine particles of aluminum, iron oxide, and titanium, this high-performance coating is designed for extreme heat applications, withstanding temperatures up to 370°C. Its superior corrosion resistance makes it a preferred choice for demanding environments.

Enhancing Heat-Resistant Coatings with Evonik Additives

Evonik’s innovative additives and specialty resins elevate the performance of heat-resistant coatings across a wide range of applications. From industrial uses like mufflers and fireplaces to consumer products like cookware, Evonik offers solutions for both waterborne and solventborne systems.

• Waterborne additives focus on environmental sustainability without compromising performance.
• Solventborne options deliver exceptional durability under demanding conditions.

These additives optimize heat resistance, corrosion protection, and aesthetic appeal, enabling manufacturers to produce superior coatings that perform under extreme temperatures.

Evonik Heat-Resistant Solutions

SILIKOPHEN®

SILIKOPHEN® resins are air-drying silicone-based materials compatible with various binders. They provide excellent corrosion protection and heat resistance up to 850°C, making them suitable for ovens, grills, mufflers, exhaust systems, and pipelines.

SILIKOFTAL®

SILIKOFTAL® silicone polyesters are ideal for decorative applications with heat resistance up to 250°C. They offer exceptional gloss retention, resistance to alkaline detergents, and compliance with FDA standards.

TEGO® Therm

TEGO® Therm is a range of advanced thermal insulation solutions. Its offerings include microporous silica-based materials for superior insulation and waterborne silicone binders with outstanding heat stability, ideal for thermal coatings in industrial and consumer applications.

By integrating Evonik’s solutions, manufacturers can achieve coatings that excel in durability, aesthetics, and heat resistance, meeting the demands of both industrial and consumer markets.

Mercury Chemical is an official distributor of Evonik in Vietnam, providing the suitable solution Heat-Resistant Paint.