Application of LC-CC8102 Conformal Coating
1. PCB Environmental Protection
Applied to PCBs in smart metering, household consumer appliances, and automotive electronics to protect against moisture ingress, salt spray (IEC 60068-2-52), mildew growth, and corrosive atmospheric gases (SO₂, H₂S, Cl₂). Volume resistivity of 8.5 × 10¹⁵ Ω·cm and dielectric strength of 30 kV/mm maintain electrical isolation between conductors under humidity and condensation exposure conditions.
2. UV Inspection
Built-in fluorescent UV tracer fluoresces under 365 nm UV blacklight, enabling automated optical inspection (AOI) or manual visual verification of coating coverage, film continuity, and absence of voids or holidays. Inspect immediately after tack-free time is reached (5 minutes at 23°C) before full cure to allow rework while the film is still solvent-removable with reduced effort.
Typical Uncured Liquid Properties of LC-CC8102 Conformal Coating
Color | Colorless to light yellow liquid |
Viscosity(mPa.s) | 52 |
Specific gravity | 0.83 |
Tack-Free Time (23℃, 80µm thickness) | 5min |
Cured Film Profile & Electrical Properties of LC-CC8102 Conformal Coating
Full cure time(80µm thickness) | 24 hours @ Room Temp |
2 hours @ 70℃ |
Hardness(Shore A) | 60 |
Adhesion (Cross-Cut Test) | Class 0 (Excellent / No detachment) |
Elongation at Break(%) | 20 |
Volume resistivity (ohm-cm) | 8.5×1015 |
Dielectric strength (KV/mm) | 30 |
Surface resistance (ohm) | 4.3×1014 |
Using temperature (°C) | -40~120 |
Standard conditions: temperature 23±2°C, relative humidity 50±5%RH.
Application Guidelines of LC-CC8102 Conformal Coating
Surface Preparation
Clean PCB surfaces of all flux residues, dust, grease, and ionic contaminants before coating. Residual flux or ionic contamination beneath the cured film will cause adhesion failure and accelerated corrosion under humidity conditions. Use isopropanol (IPA) or a dedicated PCB cleaner; verify cleanliness by ion contamination test (IPC-TM-650 2.3.25 or equivalent) on critical assemblies.
Application Methods
CC8102 is suitable for spray, dip, and brush application. Maintain target wet film thickness of 80 µm to achieve published cured film properties; film thickness outside this range will alter tack-free time, electrical properties, and flexibility. Agitate container thoroughly before use to redistribute UV tracer uniformly.
Board Orientation
Maintain PCBs in a horizontal position during coating and throughout the initial flash-off period (minimum 10 minutes at 23°C) to prevent wet film flow, edge pooling, or thinning on vertical surfaces before solvent evaporation achieves tack-free state.
Cure Conditions
Allow 24 hours at room temperature (23°C, 50% RH) for full cure before exposing coated assemblies to service conditions. Accelerated cure at 70°C for 2 hours may be used in production; allow assemblies to cool to ambient temperature before handling or electrical testing.
Inspection and Rework
Inspect under 365 nm UV blacklight after coating and after cure. For rework, apply Silfluo Conformal Coating Remover to the area requiring repair; allow penetration time per remover instructions before mechanical removal. Recoat and re-inspect after rework.
Safety & Handling Precautions of LC-CC8102 Conformal Coating
Safety: Once fully cured, the coating is completely safe and non-toxic. However, the uncured liquid contains solvents. Avoid direct skin contact and prolonged inhalation of vapors. If splashed into the eyes, flush immediately with copious amounts of clean water and seek medical attention. Always refer to the Material Safety Data Sheet (MSDS) before use.
Packaging & Storage of LC-CC8102 Conformal Coating
Packaging: Available in 1kg and 5kg containers. (Customized industrial packaging available upon request).
Storage: Store in a cool, dry, and well-ventilated environment. Strictly avoid direct sunlight and ignition sources. Maintain storage temperatures between 5°C and 28°C.
Shelf Life: 12 months in original, unopened packaging.
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