EK-M09
Room-temperature-curing high-temperature insulating resin (high-voltage-resistant)
Room-temperature-curing polysilazane-based insulating resin: ≥10⁵ V/mm dielectric strength, -30…430 °C service with 550 °C peaks, >2000 h salt spray.
FORM
One-component resin
APPEARANCE
Light-yellow to colorless transparent liquid
CURING
Ambient / 140 · >12 (ambient) / <0.5 (140 °C)
Documents
TDS · SDS
The material
How this grade works and where it fits — exact parameters are defined in the TDS.
Polysilazane offers excellent temperature resistance and electrical insulation. This product is a polysilazane modified by a special process, supplied as a two-component system. The modified polysilazane exhibits excellent toughness, hardness, adhesion, heat resistance with yellowing resistance, and high-voltage withstand performance. Adhesion is excellent, at Grade 0 (cross-cut), and the paint film withstands 180° bending while remaining intact.
The unfilled clear varnish withstands temperatures above 430 °C with a withstand voltage above 10 kV; grades filled with functional powders withstand temperatures above 550 °C without yellowing, with a withstand voltage above 6000 V. This greatly extends the service performance and application range of polysilazane.
Choose this grade for high-voltage insulation without oven curing: ≥10⁵ V/mm dielectric strength at 430 °C service (550 °C peaks), >2000 h salt spray, room-temperature or 140 °C cure.
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
TBC in TDS
—
Max service temperature
-30 to 430 °C service · 550 °C peak
Depends on cure & film build
Curing conditions
Ambient / 140 · >12 (ambient) / <0.5 (140 °C)
Per application process
Recommended film thickness
20–150 µm
—
Shelf life
6 months (storage at 5–30 °C)
Storage conditions apply
Service temperature. Intended for outdoor service at ambient temperature; resin grades adjusted for hardness with good toughness can withstand high-temperature service conditions up to 450 °C. The coating's temperature resistance varies according to the temperature resistance of the particular substrate; withstand voltage reaches above 6000 V, and the coating resists cold–heat cycling and thermal shock (note: the product supplied differs depending on the substrate).
Coating Film Properties
State (as supplied): Two-component (A, B)
Color and appearance: Light-yellow to colorless transparent liquid — GB-T 1721-79
Solids content ((120±2) °C): >50% — GB/T 1725-2007
Density (g/mL): 0.86±0.02 — GB/T 6750-2007
Hardness (pencil): ~5H — GB/T 6739-2006
Adhesion: Grade 0 (cross-cut) — GB-T 9286-1998
Neutral salt spray resistance: >2000 h — GB-T 10125-2021
Water contact angle: 105°–110° — GB/T 26490-2011
Artificial weathering resistance: 30 d: no rusting, no chalking, no cracking, no discoloration — GB-T 1865-2009
Dielectric strength (V/mm): ≥10⁵ — ASTM-D149
Temperature resistance (at hardness H): >430 °C
Withstand voltage (V): >6000
Resistance (Ω·m): ≥10¹³ — GB/T 35856-2018
Basic Application Parameters
Coating solids content (%): >50
Volatility: Solvent evaporates readily
Theoretical coverage (m²/kg): 6–8
Curing temperature (°C): Ambient / 140
Dry film thickness (µm): 20–150
Curing time (h): >12 (ambient) / <0.5 (140 °C)
Working time (pot life) (h): 1–2 h
Maximum transient temperature resistance (°C): 550
Thinner: Butyl esters, xylene, ethers, etc.
Recommended service temperature (°C): -30 to 430
Flash point (°C): <22 (solvent flash point)
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
Stainless steel, glass, cast iron, aluminum alloy, titanium alloy, high-temperature alloy steel, manganese steel and similar materials are all suitable. Note: the coating formulation differs depending on 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 in a dry, cool, well-ventilated environment, away from heat and ignition sources. Keep packaging containers tightly closed and place them with care.
Maintain the storage temperature between 5 °C and 30 °C; the shelf life is 6 months.
Coating that has been opened but not used up must be stored with the container lid tightly sealed.
Mixed (thinned) 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 it still conforms.
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-M09 spray application → curing
Abrasive roughening. Before coating, sand or grit-blast the substrate surface to remove rust, dust, dirt and other contamination adhering to the workpiece surface. Roughening has a considerable influence on coating performance: Sa2.5 is optimal and the minimum is St3 with no mill scale (GB/T 30790.4-2014), so give this step full attention.
Cleaning. Remove residual oil, dust and other contamination from the roughened surface using a dedicated cleaning agent or degreaser.
Substrate drying. Before coating, ensure the substrate surface is dry and clean.
Coating mixing. Take the required amount of product as needed and filter it through a 120-mesh screen before use.
Coating application. For laboratory spray application, a spray gun with a 1.0 nozzle bore gives better appearance and uniformity. The cured coating is somewhat hydrophobic and oleophobic, so repeated recoating is not recommended.
Curing. After spraying, room-temperature curing should give surface-dry in 1 hour, touch-dry in more than 2 hours and through-dry in more than 24 hours; accelerated heat curing is also possible (hold at 140 °C for 20 minutes).
Note: This product is a two-component curing product; once the container is opened, use the coating within 2 hours. During longer intervals in application, clean the application tools thoroughly to prevent them from setting. Application in a single spray pass is recommended, with a dry film thickness not exceeding 100 µm.
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.