High-Performance Polyurethane Potting Compound for LED and Automotive Lighting

BZ-6803 is a two-component polyurethane encapsulant designed for insulation, sealing, and moisture protection in LED lights, automotive lighting systems, power controllers, and circuit boards. Its optimized liquid state ensures deep penetration and uniform coverage of intricate geometries, delivering robust environmental resilience and mechanical durability. Fully compliant with RoHS/REACH and halogen-free, this material supports continuous operation from –40°C to 120°C, with tensile strength ≥8 MPa and water absorption ≤0.5%, ensuring long-term reliability in demanding outdoor and vehicular environments.

Key Product Features

– Color Options: Supplied in white, black, or beige to accommodate aesthetic and functional design needs.
– Mechanical Robustness: Shore A hardness 72–88, tensile strength ≥8 MPa, elongation ≥50%, offering excellent resistance to shock and vibration.
– Dielectric Performance: Volume resistivity ≥1.0×10¹³ Ω·cm, dielectric strength ≥16 kV/mm, ensuring dependable electrical isolation.
– Efficient Processing: Mix ratio 1:4, pot life 24–40 minutes; tack-free in 2–3 hours, fully cured in 4–6 hours at 25°C (or ≤60 minutes at 60°C).
– Thermal Durability: Maintains stability across –40°C to 120°C, withstanding both severe cold and prolonged high-temperature exposure.
– Regulatory Compliance: Meets global environmental standards with full RoHS/REACH conformity and halogen-free formulation.

Technical Parameters 

Product Applications

1. LED Lighting Drivers: Provides thermal management and fire safety for indoor/outdoor LED fixtures.
2. Power Supply Units: Seals AC/DC power supplies, inverters, and chargers against moisture and dust.
3. Home Appliance Control Boards: Insulates sensitive circuits in refrigerators, HVAC systems, and washing machines.
4. Industrial Electronics: Protects PLCs, motor controllers, and sensors from vibration and chemical exposure.
5. Custom Assemblies: Versatile sealing for medical devices, automotive electronics, and IoT sensors with strict safety requirements.

Directions for Use

1. Pre-potting Preparation: Calibrate scales, prepare potting tools, cleaning tools, check machine settings, check vacuum pump force, etc. 
2. Product Pre-treatment: Place product on a level surface or fixture. Remove dust, clean, degrease, and dry if necessary.
3. Accurate Proportioning: Manual operation requires precise mixing according to the specified ratio and recording. Machine potting requires calibrated ratios and first-article confirmation is recommended.
4. Mixing & Stirring: Manual operation requires thorough stirring or using electric stirrers to ensure homogeneous mixing. Machine potting requires sufficient stirring speed, adjust as needed.
5. Uniform Potting: Manual operation should be done in small, multiple batches to ensure uniformity. Machine potting should follow the programmed path for quantitative dispensing.
6. Inspection or Secondary Potting: After potting, visually inspect as needed. Perform touch-up, bubble removal, or secondary potting if required.
7. Curing: Allow the potted and inspected products to cure at room temperature or with heat assistance (recommended 60°C if needed), according to product and process requirements.
8. Final Product Confirmation: Perform visual inspection and performance testing as required by the customer.

Packing 

1. Hardener: Typically 5KG/10KG/25KG/200KG metal or plastic drums.
2. Resin: Typically 25KG/200KG metal or plastic drums.