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Views: 0 Author: Site Editor Publish Time: 2025-11-12 Origin: Site
Mica tape easily absorbs moisture and loses insulation over time. Discover why ceramic fireproof silicone tape offers superior heat resistance, durability, and electrical insulation for EV batteries and energy storage systems.
For decades, mica tape has been a common choice for electrical insulation and fire protection in motors, transformers, and battery systems. However, as technology advances and safety requirements become stricter, mica materials are revealing several critical limitations.
One major problem is moisture absorption.
Over time, mica tends to absorb water from the air, which degrades its dielectric strength and causes electrical performance failure, especially under humid or high-temperature conditions. In long-term use, the tape becomes brittle, delaminated, and loses its insulation reliability.
To address these issues, ceramic fireproof silicone tape has emerged as a new generation insulation material that provides higher safety, better flexibility, and stable electrical performance even in harsh environments.
Ceramic fireproof silicone tape is a composite material made of silicone rubber and ceramic fillers. The silicone matrix gives it excellent flexibility and can be adhesive properties, while the ceramic particles enhance heat and flame resistance.
Continuous temperature resistance up to 1200°C
UL 94-V0 flame retardancy
Excellent dielectric strength and low moisture absorption
Flexible, easy to cut and process
Optional adhesive backing for quick installation
These features make it a preferred choice in modern EV battery systems, energy storage cabinets, power distribution equipment, and electrical insulation applications.
Mica is a natural mineral with outstanding heat resistance, but it also has significant drawbacks for modern applications.
Mica tape can absorb moisture over time, especially in humid or outdoor environments.
When wet, mica’s dielectric strength decreases sharply, leading to electrical leakage or insulation breakdown.
Once the material absorbs water, it is very difficult to dry out completely.
After repeated heating and cooling cycles, mica layers often become brittle and crack, which makes installation and maintenance more difficult. The bonding resin between layers may also age and delaminate, further reducing insulation reliability.
Mica tape usually requires heat pressing or resin curing to achieve proper adhesion, increasing manufacturing complexity. It’s not suitable for automated production lines or flexible assembly processes commonly used in EV and energy industries.
| Property | Ceramic Fireproof Silicone Tape | Mica Tape |
|---|---|---|
| Temperature Resistance | Up to 1200°C | Up to 850°C |
| Moisture Resistance | Excellent, non-absorbent | Easily absorbs moisture |
| Flexibility | Soft, flexible | Brittle, prone to cracking |
| Dielectric Strength | Stable even after aging | Decreases when wet |
| Processing | Easy cutting, die-cutting | Requires resin curing |
| Fireproof Grade | UL94 V-0 | Limited |
| Service Life | Long-term stable | Degrades over time |
| Cost Performance | High | Moderate |
This comparison clearly shows why ceramic fireproof silicone tape is more suitable for long-term, high-performance insulation systems.
In modern industries such as electric vehicles, lithium battery modules, and energy storage systems, insulation materials must be thin, lightweight, and highly reliable.
Ceramic fireproof silicone tape provides effective thermal insulation between battery cells, preventing fire propagation in case of thermal runaway.
Unlike mica, it does not absorb moisture, ensuring stable insulation even after long operation cycles.
Its adhesive surface allows easy application on metal panels, busbars, and wire harnesses, replacing traditional mica sheets that require additional fixing processes.
Silicone-ceramic materials maintain their mechanical integrity and dielectric strength under continuous temperature fluctuations, guaranteeing reliable performance for over 10 years.
Eco-friendly formulation without asbestos or halogen
Automated die-cutting compatibility
Lower material waste compared to mica sheets
Excellent bonding with metals, glass, or plastic surfaces
These advantages make ceramic silicone tapes the material of choice for companies seeking sustainability and production efficiency.
As safety and durability standards rise, mica-based insulation materials are gradually being replaced by ceramic fireproof silicone tapes.
While mica may still serve in traditional electrical insulation, it cannot meet the moisture resistance, mechanical flexibility, and long-term stability demanded by modern power systems.
Ceramic fireproof silicone tape from KOMPA provides:
Superior heat and flame resistance
Excellent electrical insulation even under moisture
Flexible and durable structure for long-term performance
KOMPA provides customized ceramic fireproof silicone tapes for EV batteries, power cabinets, and high-voltage insulation.
Contact us today to request free samples or technical data sheets.
EV battery pack sealing & fire insulation
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.
Our Key Partners Include
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
