AG-ST-P1200 Nano Silica Insulation&Fireproof Board is specially engineered for thermal runaway protection of lithium batteries. Leveraging nano-micro pore technology, it delivers ultra-low thermal conductivity across the full temperature range, with a heat resistance of 1200℃ and UL94-V0 flame retardant rating. Its thin, high-precision design fits perfectly into ultra-narrow cell gaps, integrating multiple performance attributes including thermal insulation, fire resistance, electrical insulation and buffering. Compliant with environmental standards and customizable, it perfectly meets the full-level thermal runaway protection requirements of "cell-module-Pack" for new energy batteries and helps customers comply with stringent global safety regulations.
AG-ST-P1200 Nano-Silica Insulation Board is a high-efficiency thermal insulation material developed by Shenzhen Aerogel Technology using a nano-porous microstructure design. Inside the material, a large number of nano-scale pores with diameters in the tens of nanometers form an effective barrier to heat transfer.
Because these pores are much smaller than the mean free path of air molecules, heat transfer caused by gas conduction and convection is greatly reduced. At the same time, nano silica particles and reinforcing fibers interweave to form a dense internal network, further blocking thermal transmission.
As a result, the material achieves a thermal conductivity lower than still air, providing significantly better insulation performance than conventional thermal insulation materials.
With its combination of high temperature resistance, ultra-thin structure and fire protection capability, AG-ST-P1200 is designed for applications where space is limited but thermal safety requirements are extremely high, especially in battery systems and energy storage equipment.
As battery energy density continues to increase, managing thermal runaway propagation has become one of the most critical design challenges in battery packs and energy storage systems.
AG-ST-P1200 insulation board is developed to function as a reliable thermal barrier within these systems. It can be used in several key protection positions:
insulation layers between high-energy-density battery cells
thermal runaway barriers between battery modules
pack-level insulation layers to delay heat propagation
fireproof insulation panels for ESS energy storage cabinets
For large energy storage systems, the board can also be used as a cabinet fire insulation structure. When applied at 15–20 mm thickness, it can support A60 and A120 fire resistance designs required for many energy storage projects.
AG-ST-P1200 is designed for environments where insulation materials must maintain performance under extreme heat.
The nano silica structure allows the board to maintain stable insulation efficiency even at elevated temperatures.
temperature resistance up to 1200 °C
thermal conductivity as low as 0.025 W/(m·K) at 25 °C
maintains low thermal conductivity even at 500 °C and 800 °C
stable insulation structure under high temperature exposure
These characteristics make the board suitable for battery protection structures as well as other high-temperature industrial insulation applications.
Fire protection performance for energy storage systems
Battery fires require insulation materials that not only resist high temperatures but also prevent flame propagation
UL94 V0 flame retardant rating
non-combustible behavior under high temperature
no toxic gas release during combustion
after 20 minutes of flame exposure at 1000–1200 °C, the back-side temperature remains below 250 °C
With sufficient thickness design, the board can support A60 and A120 fire protection structures for energy storage cabinets, helping system integrators meet fire safety requirements in global ESS projects.
Modern battery systems leave very limited space for thermal protection materials. Insulation solutions must therefore provide strong thermal performance while occupying as little volume as possible.
AG-ST-P1200 insulation boards are available in 1.0–5.0 mm thickness, allowing them to be installed in extremely narrow gaps between battery cells or modules.
This thin yet efficient structure helps maintain high integration density and compact battery pack design without sacrificing safety.
In battery modules and energy storage equipment, insulation materials must maintain stability during transportation, vibration and long-term operation.
AG-ST-P1200 offers balanced mechanical and electrical properties suitable for industrial environments:
good compression resistance
dimensional stability during handling and assembly
DC 3500 V electrical insulation capability
halogen-free formulation
compliant with RoHS and REACH environmental regulations
These characteristics make the board safe, stable and suitable for long-term industrial use.
For battery pack manufacturers and thermal management suppliers, materials must be compatible with secondary processing and component manufacturing.
AG-ST-P1200 insulation boards are easy to process and can be converted into different structural components used inside battery systems.
This makes the material particularly suitable for die-cutting manufacturers and tier-1 / tier-2 thermal management material suppliers serving the battery and energy storage industries.

Battery thermal safety requires materials that combine high temperature resistance, thin structure and stable insulation performance. Traditional insulation materials often struggle to provide all three characteristics at the same time.
Nano silica insulation boards address this challenge by using a nano-scale porous structure that significantly reduces heat transfer.
For battery system designers, this brings several practical advantages.
The material can achieve strong insulation performance even in very thin layers, which is essential for modern high-energy-density battery packs where internal space is extremely limited.
The high temperature resistance allows the material to act as a thermal barrier during thermal runaway events, helping delay heat propagation between cells or modules.
The board structure makes the material easier to integrate into battery module assemblies, insulation panels and fire protection structures used in energy storage cabinets.
For manufacturers working on battery packs, ESS systems and thermal management components, nano silica insulation boards provide a balanced solution between thermal protection, structural integration and manufacturability.
To support different manufacturing processes and project requirements, customized specifications are also available. Boards can be supplied in different thicknesses and can be cut into various shapes and sizes according to application needs.
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If you have any questions about the product, please feel free to contact our technical experts at any time via E-mail: lexie@ag-tech.cn
At present, products with thickness less than 1.0mm cannot be manufactured due to process limitations, mainly because it is impossible to ensure thickness uniformity and the basic mechanical strength of the product.
The high-temperature resistant fiber in the raw material is high-silica glass fiber, and the opacifier is silicon carbide.
The minimum gap can be 5mm. If it is too small, it may cause quality issues of the product after packaging.
The minimum thickness of the PET film is 0.05mm, and all films meet the VTM-0 flame retardant requirement.
Making the nano-board softer will significantly reduce its mechanical strength and thermal insulation performance.
The nano-board is made by powder pressing. During the transfer process, a small amount of powder will scatter into the air and generate static electricity. At the same time, the packaging film is made of PET, which is also prone to static electricity in dry air. It is necessary to add static elimination measures to the packaging equipment to avoid static electricity affecting the packaging process.
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