Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

KEY-211 Lotus Rhyme Fluorine-Free High-Temperature Nano Coating

KEY-211 Lotus Rhyme is a fluorine-free high-temperature nano coating from the Lotus Rhyme series, engineered for thermal stability up to 600°C. It forms ultra-hydrophobic, self-cleaning surfaces via nanoscale silica-titania hybrid structure. Ideal for industrial ovens, exhaust systems, and ceramic substrates, it replaces PFAS-based coatings with eco-friendly performance, offering exceptional oxidation resistance, adhesion, and durability without compromising environmental safety or regulatory compliance.
  • key 211 lotus rhyme fluorine free high temperature nano coating_5bbd0de5
  • key 211 lotus rhyme fluorine free high temperature nano coating_5bbd0de5

Features Of KEY-211 Lotus Rhyme Fluorine-Free High-Temperature Nano Coating

  1. Fluorine-free formulation ensures compliance with global PFAS restrictions and eliminates long-term environmental persistence concerns.

  2. Thermal stability up to 600 °C enables reliable performance in high-temperature industrial processes without decomposition or outgassing.

  3. Nano-engineered ceramic-silica hybrid matrix delivers exceptional hydrophobicity, oleophobicity, and self-cleaning behavior via lotus-leaf effect.

  4. Low surface energy and ultra-smooth film formation reduce fouling, scaling, and adhesion of molten metals, polymers, and carbonaceous residues.

  5. Water-based, low-VOC dispersion simplifies handling, reduces workplace hazards, and supports EHS-compliant application via spray, dip, or brush methods.

Typical Applications Of KEY-211 Lotus Rhyme Fluorine-Free High-Temperature Nano Coating

  1. Release coatings for aluminum die-casting molds operating above 500 °C.

  2. Protective barrier layers on sintering trays, kiln furniture, and furnace linings in powder metallurgy and ceramics manufacturing.

  3. Anti-stick treatment for extrusion dies, hot-runner systems, and thermoforming tooling in high-performance polymer processing.

  4. Surface functionalization of graphite crucibles and heating elements used in vacuum and inert-atmosphere furnaces.

  5. Corrosion-inhibiting topcoat for stainless steel and Inconel components exposed to cyclic thermal shock and aggressive process vapors.

Specifications Of KEY-211 Lotus Rhyme Fluorine-Free High-Temperature Nano Coating



Chemical TypeCeramic-silica nanohybrid (fluorine-free)
Product FormAqueous colloidal dispersion
AppearanceTranslucent milky liquid, slight opalescence
Storage Stability≥12 months at 5–30 °C, unopened
Primary ApplicationsHigh-temperature anti-adhesion, thermal barrier, and corrosion-resistant coating
Key FeaturesLotus-leaf surface morphology, nano-scale uniformity, fluorine-free chemistry
BenefitsExtended mold life, reduced cleaning frequency, lower energy consumption during release
Regulatory ComplianceREACH SVHC-free; compliant with EU Directive 2019/1021 (PFAS restriction proposal); RoHS 3 compliant


Compatible Systems Of KEY-211 Lotus Rhyme Fluorine-Free High-Temperature Nano Coating

Common Compatible SystemsSuitability
Aluminum alloy die-casting molds (e.g., H13, SKD61)Highly Recommended – Forms stable, non-reactive interface up to 600 °C; no intermetallic diffusion observed
Graphite crucibles and sintering traysHighly Recommended – Excellent adhesion after thermal curing; prevents metal infiltration and oxidation
Stainless steel (304/316) and Inconel® 600/625 substratesRecommended – Requires light grit-blasting and silane primer for optimal bond strength
Alumina and silicon carbide ceramic componentsSuitable – Achieves strong van der Waals adhesion; no binder required for short-cycle applications

KEY-211 Lotus Rhyme Fluorine-Free High-Temperature Nano Coating – Frequently Asked Questions (FAQ)

Q1: What is the CAS Registry Number for KEY-211?

A: KEY-211 is a proprietary multi-component nanodispersion and does not have a single CAS number; its primary constituents are registered under CAS 68441-70-7 (colloidal silica), CAS 112926-00-8 (surface-modified alumina nanoparticles), and CAS 14464-46-1 (cerium oxide nanoparticles).


Q2: What is the recommended dry-film thickness and typical coverage rate?

A: Optimal dry-film thickness is 8–12 µm per coat. Coverage averages 8–10 m²/L (wet) on smooth metal surfaces; two coats with intermediate curing at 200 °C for 30 minutes are standard for full functionality.


Q3: How does KEY-211 differ from conventional fluoropolymer-based high-temp coatings?

A: Unlike fluoropolymers (e.g., PTFE, FEP), KEY-211 contains zero C–F bonds, eliminating PFAS-related regulatory risk, thermal degradation into toxic HF gas, and bioaccumulation potential — while matching or exceeding release performance above 450 °C.


Q4: Has KEY-211 been tested for extractables/migration under food-contact or pharmaceutical conditions?

A: Yes — validated per USP <788> and ISO 10993-12 protocols; no detectable leachables (LOD <0.1 ppb) observed after exposure to 10% ethanol, 0.1 N HCl, and purified water at 121 °C for 24 h; pending FDA Letter of Non-Objection for indirect food contact use.



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