EK-D12
High- and low-temperature resistant heavy-duty anticorrosive coating
Air-drying heavy-duty anticorrosive coating for -30…250 °C service, resistant to chemically aggressive media including hydrofluoric acid.
FORM
One-component coating
APPEARANCE
Army green
CURING
Air-drying · >24 h
Documents
TDS · SDS
Adhesives (via EK-D12D)
The material
How this grade works and where it fits — exact parameters are defined in the TDS.
EK-D12 is a heavy-duty anticorrosive coating resistant to high and low temperatures and to hydrofluoric acid — a new anticorrosive coating with excellent performance, one-component, and a semi-permanent service life. Compared with conventional coatings, it offers many distinctive properties: heavy-duty corrosion protection, high/low temperature resistance, abrasion resistance, impact resistance, and electrical insulation (the paint film has insulating properties). The main chain segments use a fluorosilicone polymer, partially end-capped with reactive isocyanate (NCO) groups, and the reactive groups are additionally encapsulated. In use, the presence of oxygen in the air releases the reactive groups, which then form stronger chemical bonds with the polar surface of the protected material while chain-extending and crosslinking on their own, forming an interpenetrating polymer network (PIN).
Because viscosity is low in the initial low-molecular-weight stage, the coating penetrates the protected material and fills the pits on its surface, achieving a firm bond between the anticorrosive material and the protected substrate and ultimately forming an airtight, dense surface layer. This effectively prevents atmospheric oxygen and moisture from reaching the protected surface, thereby achieving corrosion protection.
Choose this grade for chemically aggressive service including hydrofluoric-acid media: air-drying heavy-duty anticorrosive, -30…250 °C, 180-day immersion test record.
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
45 %
—
Viscosity
50–70 s
—
Max service temperature
-30 to 250 °C service · 400 °C peak
Depends on cure & film build
Curing conditions
Air-drying · >24 h
Per application process
Recommended film thickness
30–200 µm
—
Shelf life
6 months (storage at 5–30 °C)
Storage conditions apply
Service temperature. Service temperature and environment: this grade offers good acid and alkali resistance, with good durability in acid, alkali, salt, and organic-solvent media. It operates stably over the long term at -50 °C to 280 °C; specially treated versions withstand high temperatures above 400 °C.
Basic Coating Data
Coating appearance: Army green — Visual inspection
Coating components: Two-component (A:B = 5:1)
Mixed density: 1.61–1.72 g/cm³ — Measured
Coating Film Properties
Condition in container: Uniform, free of caking and sediment — Visual inspection
Mixed color: Army green — Visual inspection
Mixed viscosity: 50–70 s — GB-T 1723-1993
Adhesion: Grade 0 (cross-cut) — GB-T 9286-1998
Film hardness: ≥5H — GB-T 6739-2006
Neutral salt spray resistance: 180 d: no blistering, no cracking, no rust spots — GB-T 10125-2021
Artificial weathering resistance: 30 d: no rusting, no chalking, no cracking, slight discoloration — GB-T 1865-2009
Thermal shock test: 200 °C, 1 h, water-quench method, four or more cycles: no visible cracking — GB/T 30873-2014
Basic Application Parameters
Coating solids content (%): 45
Volatility: Low volatility
Theoretical coverage (m²/kg): 10–15
Curing temperature (°C): Air-drying
Dry film thickness (µm): 30–200
Curing time (h): >24
Working time (pot life) (h): 6
Maximum instantaneous temperature resistance (°C): 400
Thinner: Alkanes, esters, ethers, etc.
Recommended service temperature (°C): -30 to 250
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
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 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. The storage environment must be dry, cool, and well ventilated, away from heat and ignition sources. Keep packaging containers tightly sealed and handle with care.
Maintain a storage temperature of 5–30 °C; the shelf life is 6 months.
Once opened, containers of unused coating must be tightly resealed with the lid for storage.
Mixed 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-D12 application → Curing
Abrasive roughening. Before coating, sand or abrasive-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 pay close attention to this step.
Cleaning. Use a dedicated cleaner 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 is a two-component product: measure out the required amounts at the specified ratio, stir until thoroughly and uniformly mixed, and filter through a 300-mesh screen before use.
Coating application. For laboratory spray application, a spray gun with a 1.0 nozzle orifice gives better appearance and uniformity.
Curing. Curing time is closely related to film thickness, curing temperature, and forced-air velocity. At a given thickness and air velocity, the approximate relationship between surface-dry time and temperature is as follows: under normal temperature and humidity (temperature 20 ± 15 °C, relative humidity 65 ± 20% RH) and without added curing agent, the surface-dry time is about 6 hours; about 5 hours at 30 °C; about 4 hours at 40 °C; about 3 hours at 50 °C. (Note: when the surface-dry time falls below 3 hours, the risk of quality defects increases correspondingly. Also pay attention to the gradient of the heating curve — going directly to a high-temperature state immediately after application will impair coating quality.)
Note: This is a two-component, room-temperature-curing product; use the mixed coating within 6 hours. During longer breaks in application, clean application tools thoroughly to prevent them from setting up. Application in a single spray pass is recommended, with a dry film thickness not exceeding 200 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.