Two Component Silicone Potting Compound 4.0 W/mK Photovoltaic Energy Storage Power Equipment UL94 V-0

Ultra-High Thermal Conductivity Silicone Potting Compound (4.0 W/m·K)

This two-component, addition-cure (platinum-catalysed) silicone potting compound delivers an ultra-high thermal conductivity of 4.0±0.1 W/m·K, purpose-built for high-power electronic components with demanding heat dissipation and temperature resistance requirements. It is especially suited to photovoltaic and energy storage power equipment.

Key Features

• Ultra-high thermal conductivity: 4.0±0.1 W/m·K for superior heat transfer in high-power modules
• Wide operating temperature range: −40°C to 200°C, maintaining rubber elasticity after cure
• UL94 V-0 flame retardancy for enhanced safety in electronic assemblies
• Excellent electrical insulation: volume resistivity ≥1.0×10¹⁴ Ω·cm
• 1:1 mix ratio by weight with good fluidity and self-levelling behaviour
• Flexible curing: room-temperature cure or heat-accelerated cure (80°C / 30 min)

Typical Applications

• Photovoltaic modules and junction boxes, inverters and combiner boxes
• Energy storage power equipment, battery packs and BMS power modules
• Potting and protection of high-power power modules and circuit boards
• Switching power supplies and driver power supplies
• Automotive HID lamp power modules and automotive ignition system power modules
• Home appliance controllers and new energy vehicle DC-DC converters

Technical Data (Cured Properties)

Mixing & Application

1. Pre-mix: Stir Component A thoroughly (fillers may settle). Shake or stir Component B to ensure homogeneity.
2. Weighing: Accurately weigh A and B per the 1:1 ratio by weight (not by volume) using a precision scale.
3. Mixing: Mix thoroughly until uniform in colour; scrape container walls and bottom.
4. Degassing (optional): Vacuum-degas for void-sensitive applications.
5. Pouring / Potting: Pour within pot life and ensure complete coverage without trapped air.
6. Curing: Cure at room temperature (4–8 h) or heat-accelerated (80°C / 30 min).

Packaging & Storage

• Component A: 25 kg plastic barrel  |  Component B: 25 kg plastic barrel  |  Kit (A+B): 50 kg/set
• Store in original, tightly sealed containers in a cool, dry, well-ventilated area (5–25°C). Protect from direct sunlight and moisture.
• Shelf life: 6 months from date of manufacture when stored as recommended.

Precautions

For industrial/professional use only. Wear nitrile gloves, safety goggles and protective clothing; avoid skin and eye contact and ensure adequate ventilation. Do not use in contact with condensation-cure (acetoxy) silicone, epoxy resin or polyurethane, and keep substrates free of sulfur, tin, amine, phosphorus and acidic contaminants to avoid cure inhibition.