Silicone Aerogel Sealed Thermal Insulation Pad
Product Description
The silicone aerogel thermal insulation pad is a composite product made of ultra-thin aerogel and PET/PI films. It features an extremely low thermal conductivity of <0.035 W/m·K at room temperature and is lightweight, flexible, and non-fragile.
Product Features
Excellent insulation performance: Ultra-low thermal conductivity, highly effective thermal barrier.
Soft and flexible: Easy to bend and process, suitable for complex assembly spaces.
Waterproof and hydrophobic: No moisture absorption, maintains stability in humid environments.
High compressive resilience: Provides superior cushioning and compression resistance.
Product Applications
The silicone aerogel thermal pad is mainly used for thermal insulation and protection of new energy vehicle battery cells and modules.
When a single cell experiences thermal runaway, the thermal pad can effectively block heat transfer and delay propagation between cells, helping maintain system stability.
At the same time, it provides insulation, buffering, and flame-retardant properties.
| Item | Standard Requirement | Test Value | Reference Standard |
| Color | — | White | — |
| Thermal Conductivity (W/m·K) | |||
| @ 25°C | ≤ 0.023 | — | GB/T 10295-2008 |
| @ 500°C | ≤ 0.03 | — | GB/T 10294-2008 |
| @ 800°C | ≤ 0.036 | — | GB/T 10294-2008 |
| @ 500°C (alternate test) | ≤ 0.072 | — | GB/T 10294-2008 |
| Bulk Density (g/cm³) | 0.16–0.2 | 0.18 | GB/T 5480-2017 |
| Silicone Compression Strength (MPa) | 60A, compressed 25% | 1.23 | GB/T 7757-2009 |
| Silicone Compression Strength (MPa) | 60A, compressed 30% | 1.53 | GB/T 7757-2009 |
| Porosity (%) | ≥ 98% | 99.6 | GB/T 10299-2011 |
| Moisture Absorption (%) | ≤ 1.0 | 0.62 | GB/T 5480-2017 |
| Max Service Temperature (°C) | ≤ 650°C (continuous) | 650 | GB/T 17430-2015 |
| Flame Rating | UL | V0 | UL-94 V0 |
| Film Type | Thickness | Performance | Material Category |
| PET Hot-Melt Film | 0.05 mm / 0.08 mm | Heat resistance (≈180°C) | Thermosetting reactive adhesive |
| PI Film | 0.05 mm / 0.10 mm | Heat resistance (≈350°C) | High-temperature reactive composite |
| PI Composite Foil | 0.15 mm | Heat resistance (≈650°C) | Ceramic-reinforced composite |