EK-S08
Solid polysilazane resin, high-temperature curing
Solid high-molecular polysilazane resin with high-temperature curing. Used in ceramic-precursor routes, reactive flame-retardant systems and high-temperature adhesives.
FORM
Solid granules
APPEARANCE
Light-yellow off-white to colorless solid
CURING
260 °C · 1 h
Documents
TDS · SDS
Ceramic precursors · Additives · High-temperature adhesives
The material
How this grade works and where it fits — exact parameters are defined in the TDS.
EK-S08 solid polysilazane can be used for SiCN, SiCNO and SiO2 ceramic materials, silicon nitride fiber, composite materials and related applications. It can be applied to steel surfaces operating at 500–1300 °C, where it provides decorative, protective, rust-preventing and anticorrosion functions, and it offers excellent corrosion resistance, oxidation resistance, radiation resistance and high-temperature resistance. It is widely used in aerospace, photovoltaic cells, porous ceramics, high-temperature-resistant coatings, ceramic fibers, ceramic-matrix composites and other fields. The Si–N bond reacts readily with hydroxyl-containing substances, so the product can serve as an amine-type curing agent; it can also be used to modify hydroxyl-containing resins — such as phenolic, epoxy, alkyd and acrylic resins — to improve their temperature resistance and weatherability.
Choose this grade when you need polysilazane in solid form: granules for powder routes, melt processing and ceramic-yield work, -30…800 °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
>100%
—
Viscosity
TBC in TDS
—
Max service temperature
-30 to 800 °C service
Depends on cure & film build
Curing conditions
260 °C · 1 h
Per application process
Recommended film thickness
8 ± 5 µm
—
Shelf life
12 months (storage at 5–30 °C)
Storage conditions apply
Service temperature. Maximum tolerated temperature is 1300 °C, with long-term service at 800 °C. Coatings compounded from it with temperature-resistant nano-fillers withstand direct flame or high-temperature gas-flow impingement. The temperature resistance of the coating varies correspondingly with the temperature capability of the particular substrate; the coating withstands hot-cold cycling and offers thermal-shock resistance (note: the product supplied differs according to the substrate).
Coating Film Properties
Color and appearance: Light-yellow off-white to colorless solid — GB/T 1721-79
Quality specification (assay): ≥98% — Q/YX 10-2023
Solids content ((120 ± 2) °C): >100% — GB/T 1725-2007
Relative molecular mass: (0.7–1.8) × 10⁵ — GB/T 27843-2011
Hardness (pencil): ≥6H — GB/T 6739-2006
Adhesion: Grade 0 — GB/T 9286-1998
Salt spray resistance: >500 h — GB/T 10125-2021
Basic Application Parameters
Coating solids content (100%): Can be diluted to 10–70%
Volatility: Low (not readily volatile)
Theoretical coverage (m²/kg): 15–20
Cure temperature (°C): 260
Dry film thickness (µm): 8 ± 5
Cure time (h): 1
Working time (pot life) (h): 24
Peak short-term temperature resistance (°C): 1300
Thinner: Alkanes, esters, ethers, etc.
Recommended service temperature (°C): -30 to 800
Flash point (°C): <22 (solvent flash point)
Warehouse storage (°C): 0–30
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
Suitable for carbon steel, stainless steel, cast iron, aluminum alloys, titanium alloys, high-temperature alloy steels, glass-ceramic panels, ceramics, cement and other materials. Note: The coating formulation differs according to the substrate; within a certain range it can be adjusted and matched to the substrate and its service conditions.
Storage, packaging & transport
Store in accordance with national regulations. The storage environment must be dry, cool and well ventilated, away from heat and ignition sources. Packaging containers must be kept tightly closed and placed with care.The storage temperature must be maintained between 5 °C and 30 °C; the shelf life is 12 months.Opened, partially used coating must be resealed with the container lid and stored tightly closed.Mixed coating that has not been used up cannot be reclaimed; dispose of it in accordance with local regulations.Product past its shelf life may be used only after testing confirms that it still conforms to specification. Packaging: 1 kg and 5 kg vacuum packs.
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 → EK-S08 treatment → curing
Abrasive roughening. Before coating, grind or blast the substrate surface to remove rust, dust, dirt and other contaminants adhering to the workpiece. Surface roughening has a considerable effect on coating performance — Sa2.5 is optimal, and the minimum is St3 with no mill scale (GB/T 30790.4-2014) — so give it full attention.
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 that the substrate surface is dry and clean.
Coating mixing. This product is one-component; take the required quantity and filter it through a 120-mesh screen before use.
Coating application. For laboratory spray application, a spray gun with a 1.0 nozzle orifice gives better appearance and uniformity. After curing, the coating is somewhat hydrophobic and oleophobic, so repeated recoating is not recommended.
Curing. After spraying, allow 10 minutes for the surface to dry, then cure at 260 °C, held at temperature for 60 minutes.
Note: This product is a one-component heat-curing product; once the container has been opened, use the coating within 24 hours. During longer breaks in application, application tools should be cleaned thoroughly to prevent them from setting solid. Completing the application in a single spray pass is recommended, with a dry film thickness not exceeding 15 µm; otherwise the film properties will be somewhat reduced.
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
→
High-temperature Ceramic Coatings
→
Electrical Insulation Coatings
→
Fluorosilanes & Surface Modifiers
→
Adhesives
→
Additives
→
Polycarbosilane
→
SiC Fibers
→
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.