EK-M04
High-gloss modified polysilazane coating
High-gloss decorative-protective modified polysilazane coating: ≥7H pencil hardness, >110° water contact angle, service to 200 °C.
FORM
One-component coating
APPEARANCE
Light yellow to colorless transparent liquid
CURING
Ambient / 180 · >24 / <0.5 h
Documents
TDS · SDS
The material
How this grade works and where it fits — exact parameters are defined in the TDS.
This product uses polysilazane as the film-forming substance, combined with other resins and a range of additives including diluents, polymerization retarders and leveling agents. It addresses the problem — difficult to achieve with conventional metal coatings — of room-temperature application with ambient-temperature curing. Pencil hardness exceeds 7H, with high gloss and high build. Typical uses include paint-surface protective coatings, voltage-resistant insulating coatings, wear-resistant fire-protection coatings, hydrophobic self-cleaning anti-aging coatings for outdoor use, and skin-friendly antibacterial insulating main coats. After curing, the coating forms covalent bonds with the substrate; this chemical bonding greatly increases the mechanical strength of the coating.
Choose this grade for visible surfaces where finish quality matters: high-gloss decorative-protective coating, ≥7H, >110° water contact angle, -30…200 °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
TBC in TDS
—
Max service temperature
-30 to 200 °C service · 300 °C peak
Depends on cure & film build
Curing conditions
Ambient / 180 · >24 / <0.5 h
Per application process
Recommended film thickness
20–150 µm
—
Shelf life
12 months (storage at 5–30 °C)
Storage conditions apply
Service temperature. Suitable for outdoor service at temperatures below 200 °C and for short-term high-temperature exposure at 300 °C. Depending on the temperature resistance of the substrate, the temperature resistance of the coating varies accordingly; the coating withstands hot-cold cycling and thermal shock (note: the product supplied differs depending on the substrate).
Coating Film Properties
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): ≥7H — GB/T 6739-2006
Adhesion: Grade 0 — GB-T 9286-1998
Neutral salt spray resistance: >500 h — GB-T 10125-2021
Water contact angle (hydrophobicity): >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
Resistance (Ωm): ≥10¹³ — GB/T 35856-2018
Basic Application Parameters
Coating solids content (%): >50
Molecular weight: 3500
Theoretical coverage (m²/kg): 6–8
Dry film thickness (µm): 20–150
Working time (pot life) (h): 4
Diluent: Aromatic hydrocarbons, esters, ethers, etc.
Flash point (°C): <22 (solvent flash point)
Volatility: Solvent evaporates readily
Light transmittance: >91%
Curing temperature (°C): Ambient / 180
Curing time (h): >24 / <0.5
Maximum transient temperature resistance (°C): 300
Recommended service temperature (°C): -30 to 200
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
Carbon steel, stainless steel, cast iron, aluminum alloys, titanium alloys, high-temperature alloy steels, glass-ceramic panels, ceramics, cement and similar materials are all suitable. Note: The coating formulation differs depending on the substrate. 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 must be dry, cool and well ventilated, away from heat sources and open flames. Keep packaging containers tightly sealed and place them with care.
Maintain a storage temperature of 5–30 °C; the shelf life is 12 months.
Reseal opened containers of unused coating promptly and store them tightly closed.
Prepared coating that is not 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 meets specification.
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-M04 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. Surface roughening has a major influence on coating performance: Sa2.5 is optimal and St3 with no mill scale is the minimum (GB/T 30790.4-2014), so give this step full attention.
Cleaning. Use a dedicated cleaner or degreaser to remove residual oil, dust and other contaminants from the roughened surface.
Substrate drying. Before coating, ensure the substrate surface is dry and clean.
Coating mixing. This product is one-component; take the required amount and filter it through a 120-mesh screen before use.
Coating application. For laboratory spray application, a 1.0 mm nozzle spray gun gives better appearance and uniformity. The cured coating is somewhat hydrophobic and oleophobic, so recoating is not recommended.
Curing. After spraying, with room-temperature curing the coating should be 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 (180 °C for 20 minutes).
Note: This product is a one-component self-curing product; once the container is opened, use the coating within 4 hours. During longer breaks in application, clean the application tools thoroughly to prevent them from setting up. Application in a single spray pass is recommended, with a dry film thickness not exceeding 150 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
→
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.