EK-D13
High-temperature thermal-conductive coating
Thermally conductive, heat-dissipating coating with high-temperature curing; thermal conductivity up to 248 W/(m·K) per client data.
FORM
Two-component coating
APPEARANCE
Black/gray
CURING
80 (air) · 60 h
Documents
TDS · SDS
The material
How this grade works and where it fits — exact parameters are defined in the TDS.
This product is a two-component coating formulated with high-thermal-conductivity polysilazane as the binder, compounded with graphene, aluminum silver powder, plastic fillers, compatibilizing additives and other components. After medium-temperature curing, the coating converts into a polysilazane–graphene composite coating. The Si–H-rich polysilazane oligomers form a dense, covalently bonded film with the fillers, imparting excellent corrosion resistance, thermal stability and thermal conductivity to the thermally conductive fillers. The coating withstands long-term service in a 500 °C environment without cracking or flaking.
Applications: (1) heat dissipation and thermal conduction for high-temperature devices and high-temperature sensor components; (2) surfaces of metallurgical equipment, molds and casting equipment; (3) electric heating elements, tanks, enclosures, heat exchangers and radiators; (4) small household appliances and kitchenware (burner caps, rice cookers, etc.); (5) high-temperature components in the chemical and metallurgical industries; (6) other applications requiring thermal management.
Choose this grade when heat must pass through the coating rather than be blocked: graphene/aluminium-filled thermally conductive system, two-component, -30…500 °C service.
Final fit is confirmed during technical review — send your substrate, operating environment and application process, and the team will confirm this grade or point you to a closer one.
Suitable for
Industrial applications within the TDS parameters
Metal, glass, ceramic and stone substrates — per grade
Professional application and curing processes
Not intended for
Consumer or DIY use — industrial B2B supply only
Conditions outside the parameters defined in the TDS
Food-contact or medical use unless explicitly confirmed
Applications
Recommended application areas for this grade, based on its TDS. Application fit is confirmed during technical review.
Recommended applications for this grade:
Technical data
Key values from this grade's TDS. The complete measured data set follows below; the official document is available on request.
PROPERTY
TYPICAL VALUE
NOTES
Solid content
>50 %
—
Viscosity
Adjustable to suit application conditions
—
Max service temperature
-30 to 500 °C service
Depends on cure & film build
Curing conditions
80 (air) · 60 h
Per application process
Recommended film thickness
10–40 µm
—
Shelf life
6 months (storage at 10–30 °C)
Storage conditions apply
Service temperature. Maximum withstand temperature 800 °C; can be used long-term at 500 °C and withstands prolonged scouring by high-temperature gas flow at 500 °C. The temperature resistance of the coating varies according to the temperature resistance of the substrate (note: product performance differs depending on the substrate).
Basic Coating Data
Coating appearance: Black/gray — Visual inspection
Coating components: Two-component (A:B = 6:4)
Mixed density: 1.78–1.95 g/cm³ — Measured
Coating Film Properties
Condition in container: Uniform, free of caking and sediment — Visual inspection
Mixed color: Black/gray — Visual inspection
Mixed viscosity: Adjustable to suit application conditions — GB/T 1723-1993
Adhesion (cross-cut): Grade 0 — GB/T 9286-1998
Film hardness: ≥6H — GB/T 6739-2006
Aging resistance: 30 d: no rusting, no chalking, no cracking, no discoloration — GB/T 1865-2009
Neutral salt spray resistance: After exposure to 800 °C, 30 d: no blistering, no rust spots — GB/T 10125-2021
High-temperature test: 500 °C/10 h: no flaking, no cracking — GB/T 30873-2014
Thermal conductivity: >10 W/m·K — Transient hot-wire method
Basic Application Parameters
Solids content (%): >50
Theoretical coverage (m²/kg): 8–15
Dry film thickness (µm): 10–40
Working time (pot life) (h): 4
Thinner: Alkanes, esters, ethers, etc.
Flash point (°C): <25 (solvent flash point)
Volatility: Low volatility
Curing temperature (°C): 80 (air)
Curing time (min): 60
Maximum temperature resistance (°C): 800
Recommended service temperature (°C): -30 to 500
Storage (°C): 10–30
Data above is taken from the manufacturer’s TDS. Request the official document via the documents section below.
Substrates & storage
Compatibility and handling essentials — confirmed per grade in the TDS and SDS.
Suitable substrates
Steel and stainless steel
Aluminium and other metals
Glass and ceramics
Stone and mineral surfaces
Aluminum, 310S stainless steel, 316 stainless steel and other high-temperature alloy steels. Note: the coating formulation differs for different substrates; within a certain range, it can be adjusted to match the substrate and its service conditions.
Storage, packaging & transport
Store in accordance with national regulations. The storage environment should be dry, cool and well ventilated, away from heat and ignition sources. Packaging containers must be kept tightly sealed and placed with care.
Storage temperature must be maintained between 10 °C and 30 °C; shelf life is 6 months.
Opened, partially used coating must be resealed tightly with the container lid for storage.
Mixed coating that is not used up cannot be reclaimed and should be disposed of in accordance with local regulations.
Product past its shelf life may be used only after testing confirms it still meets specifications.
Packaging
1 kg / 5 kg / 25 kg (grade-dependent)
Transport classification
Per SDS
Application process
General guidance — exact parameters are provided in the TDS and Application Guide.
01
Surface preparation
Clean, degrease and prepare the substrate.
02
Application
Spray, dip or wipe depending on grade.
03
Curing
Cure per the TDS conditions.
04
Quality control
Verify film build and adhesion.
Standard process: Surface cleaning → Abrasive roughening → Cleaning and blow-off → Spray/blade application → Curing
Abrasive roughening. Before coating, sand or blast the substrate surface to remove rust, dust, dirt and other contaminants adhering to the workpiece surface. Roughening has a significant effect on coating performance; Sa2.5 is optimal, with a minimum of St3 grade free of mill scale (GB/T 30790.4-2014), so pay close attention to this step.
Cleaning. Use a dedicated cleaning agent or degreaser to remove oil, dust and other residues remaining on the roughened surface.
Substrate drying. Before coating, ensure the substrate surface is dry and clean.
Coating mixing. This product is two-component; take appropriate amounts of coating according to the mixing ratio, stir until thoroughly and uniformly mixed, and filter through a 180-mesh screen before use.
Coating application. For laboratory spray application, a spray gun with a 1.0 nozzle gives better appearance and uniformity.
Curing. Air curing withstands 800 °C, with a long-term service temperature of 500 °C (nitrogen curing conditions available on request).
Note: This product is a two-component heat-curing product; use the mixed coating within 12 hours. For longer application sessions, clean application tools thoroughly to prevent them from setting. Dry film thickness should not exceed 35 µm, otherwise coating film performance will decline.
More grades
Browse the full catalogue by category, or send your requirements — we will recommend a grade for your case.
Organic Polysilazane Resins
→
Inorganic Polysilazane / Ceramic Precursors
→
Modified Polysilazane Coatings
→
Ready-to-use Ceramic Coatings
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High-temperature Ceramic Coatings
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Electrical Insulation Coatings
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Fluorosilanes & Surface Modifiers
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Adhesives
→
Additives
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Polycarbosilane
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SiC Fibers
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Ordering & logistics
Common questions from procurement and engineering teams.
What packaging formats are available?
Standard packaging is 1 kg, 5 kg and 25 kg containers, grade-dependent. Other formats, minimum order quantity, lead times, shipping terms and stock availability are confirmed on request.
What is the minimum order quantity for this product?
MOQ depends on the packaging format — confirmed by our team for your grade and volume.
What happens after I send an inquiry?
Our technical team reviews your requirement and responds with a recommendation, the relevant documents and next steps.
How do I get a quotation?
Include your estimated volume and application in the inquiry — a quotation follows the technical review.
How is the product shipped?
Packaging, transport classification and shipping details are provided per SDS — request packaging and shipping information with your inquiry.