High Temperature Coatings

DY-25

High-Temperature Infrared Radiation Coating

High-temperature infrared radiation coating for compatible industrial furnace, kiln and heating-equipment surfaces.

Technical parameters Contact technical team

DY-25 high-temperature infrared radiation coating package

High Emissivity Coating for Industrial Furnaces

DY-25 is a high-temperature infrared radiation coating for compatible surfaces in industrial furnaces, kilns and heating equipment. It is positioned as a high emissivity furnace coating where radiative heat transfer is part of the thermal-management objective. The product should not be treated as a generic anti-corrosion coating or selected from a keyword alone. Furnace geometry, substrate, operating temperature, atmosphere, existing lining condition and the intended heat-transfer role all require review. Application planning must also consider access, surface preparation, film continuity and the verified curing procedure. No emissivity value should be assumed unless it is stated in the controlled product information supplied for the project.

A modified inorganic-binder coating with zirconia, boron nitride, nano-ceramic powders and rare-earth oxides for high-temperature refractory and equipment surfaces.

Problems addressed

Low furnace-lining emissivityHigh-temperature surface protectionCoking and contamination on refractory surfaces

Furnace and Kiln Applications

When this product direction fits

Infrared-emissive coating for kiln linings, refractory materials and high-temperature equipment.

How this system differs

DY-25 has an infrared-emissive surface-coating role for kiln linings, refractory materials and high-temperature equipment. Its documented radiation-management purpose is distinct from the family's anti-corrosion coating, sealer-primer and adhesive roles.

What must be confirmed

Suitability depends on the actual substrate, medium, concentration, temperature cycle, exposure mode and application window. Final system selection and project-specific instructions require technical review.

Product features and advantages

High infrared emissivity

High-temperature stability

Hard ceramic surface

Barrier against corrosive atmosphere

Typical application context

Infrared Radiation and Furnace Heat Transfer

Cement · Steel · Petrochemical & Refining: application review for Industrial kiln · Cracking furnace · High-temperature process equipment.

Protective systems selected for the actual temperature, thermal cycle, substrate and corrosive exposure. Confirm the substrate, exposure and maintenance access before final selection.

Suitable equipment

Industrial kilnCracking furnaceHigh-temperature process equipment

Industries

Cement

Steel

Petrochemical & Refining

Power & Energy

Substrates and areas

Stainless steel · Refractory brick · Castable refractory · Ceramics · Refractory fibre

Operating conditions

400°C to 1750°C stated service range

DY-25

Technical parameters

Only values available in the reviewed product source are shown.

Technical parametersValueSource

Mixing Ratio1.8-2:1 by weight for two-component form

Recommended Dry Film Thickness125 μm

Touch Dry Time≤2 h at 25±1°C

Hard Dry Time≤48 h at 25±1°C

AppearanceLight green or grey; smoothProduct source

Density2.0-2.3 g/mlProduct source

Theoretical Coverage2.5 m²/kg at 125 μmProduct source

Drying TimeTouch dry ≤2 h; hard dry ≤48 h at 25±1°CProduct source

Solid Content75% by volumeProduct source

AdhesionGrade 1Product source

Infrared Emissivity>0.93Product source

Hardness6HProduct source

Linear Expansion Coefficient5-7×10⁻⁶/°CProduct source

Thermal Shock Resistance1000°C to room temperature, 20 cycles; no cracking or delaminationProduct source

Application Conditions and Inspection

Confirm substrate condition, contamination, corrosion, defects and access before work starts.

Remove oil, dust and loose material; prepare cleanliness and profile to the reviewed product procedure.

Check compatibility of retained coatings and complete a representative trial area when the existing system is uncertain.

Prepare and mix only according to the product source; do not improvise ratio, thinner or pot life.

Build a continuous system in controlled layers, with special attention to edges, welds, joints and shadow zones.

Protect the applied area through curing, then inspect continuity, visible defects and recorded source-backed acceptance items.

Source-specific procedure

Surface Preparation

Metal to Sa 2.5 or St 3 for local repair; non-metal surfaces clean and free of coke, dust and loose material.

Application Environment

5-60°C; relative humidity ≤85%; substrate ≥3°C above dew point.

Mixing

Single-component: stir until uniform. Two-component: mix powder:liquid at 1.8-2:1 by weight for 3-5 minutes.

Application Tools

Air spray or airless spray, 30-40 cm from substrate.

Curing

24 h stated in application section.

Precautions

Do not use organic solvent thinners or tools contaminated by oil-based coatings.

Packaging, storage and transport

PackagingSingle- or two-component form; 20 kg/pail

StorageDry, cool area away from sunlight, heat and ignition sources; 5-40°C

Shelf Life12 months unopened

TransportMaintain 5-40°C

Official product source: High-temperature infrared radiation energy-saving coating / DY-25 PDF

Quality checks

Check surface-preparation records, environmental conditions, layer continuity, edges, welds and visible defects. Use only acceptance criteria stated in the reviewed product or project documents.

Maintenance and repair

Inspect representative high-risk locations during planned maintenance. Clean the area, identify the cause of damage, feather sound edges and verify compatibility before local repair.

Scope and limitations

Technical documents

Documents for project evaluation

TDS, SDS, MSDS, test reports and other project-related technical documents are available based on specific project requirements. Please contact us through WhatsApp.

Request via WhatsApp

Frequently Asked Questions

What is a high emissivity coating?

It is a coating selected to influence radiative heat transfer from a compatible surface. The system must be reviewed against the furnace substrate, temperature, atmosphere and intended thermal function.

Where are high emissivity coatings used in furnaces?

They may be considered on compatible furnace, kiln and heating-equipment surfaces where radiative heat transfer is part of the engineering objective.

How is an infrared radiation coating selected?

Review substrate, service temperature, atmosphere, furnace geometry, surface condition and application sequence. Do not assume an emissivity value that is not present in verified project data.