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KEY-221 Hejing · Electronic Nanocoating

KEY-221 Hejing · Electronic Nanocoating

Product Highlights

Water contact angle 125°	Coating thickness as low as 2-3 μm	Compliant with RoHS and REACH environmental directives
Suitable for various adhesion processes	Waterproof, moisture-proof and corrosion-resistant	Reduce dust adhesion
Wear-resistant	Suitable for glass and metal surfaces	Strong adhesion

Product Description

KEY-221 Hejing electronic nanocoating is a colorless, transparent, and low-odor liquid with ultra-low viscosity and ultra-high leveling properties. After simple impregnation, spraying, or other processes, and followed by room temperature drying or rapid baking, it can form a waterproof, moisture-proof, insulating, and corrosion-resistant coating on electronic PCBA circuit boards, various components, and ITO surfaces.

This coating is completely colorless and transparent, does not affect electronic signals or heat dissipation, is non-flammable and non-explosive, safe and environmentally friendly, and has wide applications in industries such as smart wearables, smart healthcare, smart homes, military communications, and new energy.

Features

High Hydrophobicity: Low surface energy (<10 dyne), capable of covering narrow gaps.
Ultra-thin: Coating thickness as low as 2-3μm, colorless and transparent.
Excellent Weatherability: Resistant to UV radiation, extreme temperature fluctuations, waterproof, rustproof, and corrosion-resistant (salt spray resistance, oxidation resistance, acid and alkali resistance).?
High Insulation: High impedance value, high density, minimal porosity.
No Impact on Signals or Heat Dissipation: Thin coating thickness with excellent thermal conductivity.
Superior Adhesion: Suitable for diverse substrates including metals, glass, ceramics, polymers, composites, and laminates.
Simple Process: Quick-drying formulation compatible with dip coating, spot coating, flow coating, spray coating, and other application methods.
Repairable: Supports direct solder repair; coating is easily removable and can be recoated for rework.
Environmentally Friendly & Non-Toxic: Utilizes eco-friendly electronic fluorinated liquid with minimal odor, posing no harm to humans and being environmentally compatible.

Industry Applications

Performance indicators?

KEY-221 Hejing · Electronic Nanocoating

Appearance	Colorless and transparent liquid
Density	(1.812±0.05) g/cm3
Surface drying time	Normal temperature: 2-5 minutes
Practical time	Normal temperature：12h；50～60 ℃ ：0.5h
Solvent	Fluorinated fluid
Solvent boiling point	118 ℃
Flash point	No (closed cup)
Compatibility	Insoluble in solvents such as heptane, toluene, and water.
Water contact angle	117-125°
Oleic acid contact angle	101-105°
Hardness	20-25HD
Adhesion	Level 0
Decomposition temperature	272 ℃

Test data

Test Project	Parameter	Detection methods
Salt spray corrosion resistance	72h（pH 6.5）	GB 10125-2012
Acid corrosion resistant	96h（pH 2.0）	GB-T 9274-1988
Acid corrosion resistant	96h（pH 12）	GB-T 9274-1988

Packaging specifications

5 kg、10 kg、15 kg、20 kg、25 kg、50 kg、100 kg

Transportation and storage

Transport as non-hazardous chemicals and non-corrosive chemicals.?

?Store away from light and heat.?

?Single packages must not be stacked more than two layers, and the bottom layer must be secured with a non-slip tray to prevent squeezing, deformation, or tipping.