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Views: 0 Author: Site Editor Publish Time: 2025-09-19 Origin: Site
In high-temperature applications such as EV battery packs, energy storage systems, and cable insulation, materials must perform under High temperature insulation applications. Two of the most popular fireproof insulation materials today are Ceramic Fireproof Silicone Tape and Mica Insulation.
Both are used for thermal protection, electrical insulation, and fire resistance, but they differ greatly in composition, performance, and cost-effectiveness. This article compares these two materials in detail to help engineers, designers, and manufacturers choose the right one for their applications.
Ceramic Fireproof Silicone Tape is a high-performance fire-resistant material made by combining silicone rubber with ceramic fillers and fiberglass fabric. When exposed to fire or extreme heat, the silicone layer ceramifies — it transforms into a hard, non-melting ceramic-like protective barrier.
This unique reaction gives it outstanding flame resistance, electrical insulation, and thermal stability even beyond 1000°C for short periods.
Self-ceramifying under fire exposure
Non-flammable and halogen-free
Excellent flexibility before burning
Maintains insulation after flame exposure
Resistant to high voltage
Typical Applications:
EV battery fire barrier
Energy storage cabinet insulation
Cable and wire fireproof wrapping
High-temperature sealing and protection
Mica Insulation is a traditional material widely used in the electrical and thermal insulation industry. Mica is a Mica ore raw materials that can withstand very high temperatures (up to 1000°C) without losing its structure.
It is often processed into mica tape, mica sheets, and special-shaped mica pieces, which are reinforced with glass fiber or silicone resin to enhance flexibility and strength.
Excellent dielectric strength
High temperature resistance (up to 1000°C)
Stable and non-combustible
Good thermal insulation properties
Electrical insulation for motors and transformers
Typical Applications:
Fire-resistant cables
Electrical insulation for motors and transformers
Furnace and heating element insulation
| Property | Ceramic Fireproof Silicone Tape | Mica Insulation |
|---|---|---|
| Base Material | Silicone rubber + ceramic+glassfiber | Natural mica mineral |
| Flexibility (Before Fire) | Excellent | Moderate |
| Flexibility (After Fire) | Becomes hard ceramic shell | Brittle |
| Fire Resistance | Self-ceramifying, withstands >1000°C | Stable up to 1000°C |
| Electrical Insulation | Excellent | Excellent |
| Water Resistance | Waterproof, moisture-proof | Poor (absorbs moisture) |
| Weight | Light | Moderate |
| Cost | Moderate | Low to moderate |
| Environmental Impact | Halogen-free, RoHS compliant | Natural, but not flexible |
Unlike traditional mica materials that simply resist fire, ceramic fireproof silicone tape actively transforms when exposed to flame.
The silicone rubber forms a dense ceramic protective shell, preventing fire from spreading and maintaining insulation integrity.
Ceramic fireproof silicone tape is soft and flexible before exposure to heat, making it easier to cut, wrap, or die-cut into complex shapes. This feature is especially useful in battery modules and cable assemblies, where precise fitting is critical.
Mica materials can absorb moisture over time, reducing insulation performance. Ceramic fireproof silicone tape, on the other hand, is waterproof and weather-resistant, maintaining stable performance even in humid environments.
Because it is silicone-based, this tape can easily bond with other silicone foams, thermal pads, or sealing materials, creating a unified insulation system.
Mica has been used for decades in the electrical and thermal insulation field. Its performance is well understood and consistent, especially in high-voltage and motor applications.
For applications where mechanical flexibility is not a priority — such as furnace linings or cable cores — mica tape remains a lower-cost and reliable solution.
Mica provides outstanding electrical insulation, making it ideal for transformers, heating elements, and high-voltage systems.
Slightly higher cost compared to mica
More color options (usually gray orange and others)
Brittle and less flexible, difficult to shape
Poor moisture resistance
May delaminate under vibration or bending
Your selection depends on the application environment and performance priorities:
| Application | Recommended Material | Reason |
|---|---|---|
| EV Battery Fire Protection | Ceramic Fireproof Silicone Tape | Flexible, lightweight, ceramifies under flame |
| Cable Fireproof Wrapping | Ceramic Fireproof Silicone Tape | Easy to wrap, maintains structure after fire |
| Transformer and Motor Insulation | Mica Tape | Excellent dielectric strength |
| Furnace and Heating Element Insulation | Mica Sheet | Stable under constant high temperature |
| Energy Storage Cabinet | Ceramic Fireproof Silicone Tape | Combines fire resistance and electrical insulation |
As modern industries — especially electric vehicles, renewable energy, and power storage systems — move toward lightweight and flexible fireproof solutions, ceramic fireproof silicone tape is emerging as the preferred mica replacement.
Manufacturers appreciate its ability to long-term durability under extreme thermal and insulation conditions.
This innovation aligns with global safety standards such as UL 94 V-0, IEC 60332, and RoHS environmental requirements, ensuring both safety and sustainability.
While Mica Insulation remains a proven material for traditional electrical insulation, Ceramic Fireproof Silicone Tape offers a next-generation alternative with superior flexibility, moisture resistance, and post-flame performance.
For engineers designing EV battery systems, fireproof cables, or energy storage units, switching to ceramic fireproof silicone tape provides a more reliable, lightweight, and safer solution — redefining what modern fireproof insulation can achieve.
Used as a sealing gasket around battery pack enclosures to prevent dust, moisture, and gas leakage.
Provides flame-retardant barriers and thermal insulation, helping slow fire propagation and protecting cells from thermal runaway.
Maintains long-term compression set resistance even under high temperatures and pressure cycles.
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Huawei – Global leader in communications, smart devices, and energy solutions
ZENERGY – Trusted supplier specializing in new energy battery systems
SAIC Motor – One of China’s largest and most innovative automotive manufacturers
Dongfeng Motor – Leading state-owned company in commercial and passenger vehicles
CRRC – World’s largest manufacturer of rail transit equipment and systems.
CALB – Global innovator in lithium battery technology and energy storage solutions
