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SilSo Lite 21030
SilSo Lite 21030
SilSo Lite 21030 – Medium-Density, Self-Blowing Silicone Foam for Lightweight Potting
SilSo Lite 21030 is a two-component, platinum-cure, self-blowing silicone foam engineered for lightweight potting and encapsulation where thermal protection, shock absorption, and reduced mass are critical. Upon mixing, it expands 2–3× its dispensed volume via hydrogen gas generation, forming a closed-cell, opaque black foam with excellent flow and low-pressure rise ideal for sensitive electronics and complex geometries.
Designed for liquid dispensing systems, SilSo Lite 21030 offers a fast 6-minute gel time at 25°C and cures to a stable, hydrolytically resistant foam with a final density of 0.3 g/cm³ less than one-third that of standard silicones. Its forgiving processing window and compatibility with static mixers make it ideal for EV battery modules, PCB staking, and thermal insulation in high-volume production.
Key Features
- Self-blowing expansion – 2–3× volume increase without external blowing agents
- Ultra-low cured density: 0.3 g/cm³, significant weight savings vs. solid silicones
- Fast gel time: 6 minutes at 25°C, suited for automated dispensing
- Low-pressure rise – minimises stress on delicate components during foaming
- Excellent flowability – fills intricate assemblies before gelation
- Hydrolytically stable & reversion resistant – reliable in humid or high-temp environments
- Electrical insulation and environmental protection against moisture, dust, and vibration
Typical Applications
- Lightweight potting of EV battery modules and power electronics
- PCB staking and component fixation requiring shock absorption
- Thermal and acoustic insulation in aerospace and automotive systems
- Encapsulation of sensitive assemblies where minimal cure pressure is essential
Technical Notes
- Mix ratio: 1:1 by volume (1.12:1 by weight)
- Mixed viscosity: 7,000 cP
- Cured colour: Opaque black
- Max service temperature: 200°C (392°F)
- Self-bonding: Yes – adheres to many substrates without primer
- Inhibition sensitivity: Avoid contact with sulphur-, nitrogen-, tin-, or PVC-based materials (e.g., latex gloves, sulphur-cured rubbers)
Processing Recommendations
- Dispense by volume using static mixers
- Ideal dispense rate: 1–2 grams/second for uniform cell structure
- Ambient temperature: 20–30°C (68–85°F) for optimal foam quality
- Purge between dispenses: Recommended within ¼ of gel time (~90 seconds) to prevent nozzle clogging
- Do not confine in sealed cavities without venting, as internal pressure may build during expansion
Storage & Shelf Life
- Shelf life: 12 months in original, unopened containers
- Max storage temperature: 38°C (100°F)
Packaging Options
- Available in matched A/B bulk kits for automated meter-mix-dispense systems.
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SilSo Lite 21030 – Medium-Density, Self-Blowing Silicone Foam for Lightweight Potting
SilSo Lite 21030 is a two-component, platinum-cure, self-blowing silicone foam engineered for lightweight potting and encapsulation where thermal protection, shock absorption, and reduced mass are critical. Upon mixing, it expands 2–3× its dispensed volume via hydrogen gas generation, forming a closed-cell, opaque black foam with excellent flow and low-pressure rise ideal for sensitive electronics and complex geometries.
Designed for liquid dispensing systems, SilSo Lite 21030 offers a fast 6-minute gel time at 25°C and cures to a stable, hydrolytically resistant foam with a final density of 0.3 g/cm³ less than one-third that of standard silicones. Its forgiving processing window and compatibility with static mixers make it ideal for EV battery modules, PCB staking, and thermal insulation in high-volume production.