As Gas Vehicles Phase Out, Mica Becomes an Essential Safety Material for New Energy Vehicles
Published time:
2026-07-19 09:56
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The Era of Gas Vehicle Phase-out Arrives: Mica Serves as the Core Safety Cornerstone for Green Mobility Amid the New Energy Wave
The global low-carbon transition has become an irreversible trend. Phasing-out and sales-restriction policies for fuel vehicles have been rolled out across regions, gradually phasing out conventional internal combustion engine vehicles. New energy vehicles, energy storage systems and rail transit will dominate the future mobility sector.
Zero-emission, low-cost and intelligent new energy vehicles are rapidly capturing the consumer market. 800V high-voltage fast charging and high-capacity power batteries have become standard industry configurations, giving rise to an entirely new high-voltage & high-temperature electrical system.
Amid this energy and mobility transformation, mica materials, though seemingly unremarkable, act as irreplaceable core inorganic insulators that guarantee the safe and stable operation of new energy equipment, bringing explosive growth to its industrial value.
Fuel Vehicles Accelerate Phase-out, New Energy Reshapes the Underlying Logic of Mobility
Dual Carbon goals are steadily implemented, pushing deep clean energy restructuring. Fuel vehicles stand out for high emissions, high running costs and intricate fuel systems, facing long-term industrial decline.
Centered on batteries, motors and electronic controls, new energy vehicles overhaul conventional fuel car designs. They deliver zero exhaust emissions, lower power expenses and easy maintenance, fitting low-carbon mobility demands. Faster technical upgrades, widespread high-voltage platforms and higher-density batteries fuel growth in energy storage, electric vessels and high-speed rail, advancing electrified transport.
Nevertheless, high voltage, high temperature and dense energy storage create new safety hazards. Thermal runaway of battery cells generates extreme heat instantly, while high-voltage wires risk arc burns. Conventional plastic and film insulators carbonize rapidly under heat and fail strict vehicle safety standards. Heat-resistant, flame-retardant, high-voltage and low-smoke halogen-free mica insulators have become essential for the new energy sector.
Mica: An Indispensable Safety Barrier Across the Entire New Energy Industrial Chain
Featuring unique layered silicate crystal structure, mica boasts core strengths including stable performance at 1200°C, superior dielectric strength, Class A flame retardancy and low-smoke halogen-free properties. It fits all new energy protection scenarios, covering four key segments: power batteries, drive motors, vehicle high-voltage cables and vehicle heating assemblies, acting as an upgraded substitute unmatched by conventional insulating materials used for fuel vehicles.
1. Power Battery Packs: Core Thermal Barrier Against Thermal Runaway
As the safety core of new energy vehicles, power batteries are prone to cascading fire risks once thermal runaway occurs. Mica products form multi-layer safety protection systems:
Mica separators between cells block heat transfer and slow thermal propagation to win evacuation time for passengers. Synthetic mica tape wrapped around high-voltage busbars and internal wiring forms dense ceramic shielding under high heat to prevent short circuits. Custom-shaped mica parts and battery cover plates balance insulation, shock resistance and lightweight design to fit various battery modules.
Industry statistics show 15 to 20 tons of mica insulation materials are required per GWh of power batteries. Vehicles equipped with 800V high-voltage platforms impose stricter standards on mica’s voltage and heat resistance, leading to rising mica consumption per vehicle year by year.
2. Drive Motors & Electronic Control Systems: Core Carrier for High-Voltage Insulation
New energy motors run continuously at high speed under 800V high voltage, exposed to sustained high temperature and electric fields that may trigger partial discharge breakdown. Winding coils wrapped with synthetic and calcined mica tape, alongside mica tubes for electrode isolation, sustain long-term resistance to high voltage thanks to outstanding dielectric strength. Their service life is 3 to 5 times longer than common organic insulators, widely applied in passenger and commercial vehicle drive systems.
3. Fire-Resistant Substrate for Vehicle & Energy Storage High-Voltage Cables
Cables for fuel vehicles only meet basic heat resistance standards, while high-voltage cables for new energy vehicles and large energy storage systems demand lasting fire resistance. Phlogopite and calcined mica tape serve as inner fire-resistant layers of cables, retaining complete insulation performance at 750°C and passing the national standard 90-minute fire integrity test. They are standard raw materials for high-voltage cables used in energy storage, rail transit and new energy vehicles.
4. Vehicle Thermal Control Heating Components
Mica silicon crystal heating films are adopted in battery preheating films, vehicle heaters and cabin temperature control modules. Featuring high thermal conversion efficiency and far-infrared constant temperature heating, they deliver safe insulation without electric leakage risks, achieving low carbon and energy saving to satisfy full-range temperature control demands of new energy vehicles.
Industrial Upgrading – High-Grade Mica Meets Booming New Energy Needs
As the new energy market keeps expanding, mica products have evolved from conventional electrical auxiliaries into core vehicle safety components, with the whole industry shifting toward high heat resistance, high voltage resistance and halogen-free flame retardancy.
1. Full-range Mica Products for Diverse New Energy Scenarios
Mainstream mica product lines are comprehensive. Synthetic mica withstands temperatures up to 1100°C, suitable for premium 800V high-voltage equipment. Calcined mica eliminates crystal water impurities and features low smoke and zero halogen, ideal for high-end cables used in ships and energy storage. Hard mica boards, soft mica boards and precision die-cut special-shaped mica parts can be customized in thickness, size and temperature resistance to match various special module structures per requests from vehicle and energy storage manufacturers.
2. Sound Technical & Quality Control Systems to Meet High-end Industry Access Standards
Established mica manufacturers deploy full automatic production lines and professional testing equipment, with independent capacity to develop modified mica formulas and a range of innovative technical achievements for mica tapes and mica boards. The whole production process complies with ISO9001 quality management, ISO14001 environmental management and ISO45001 occupational health & safety standards. Products have obtained multiple certifications including UL, CE, RoHS and IATF16949, and passed cable fire resistance tests to meet entry requirements of new energy vehicle and energy storage sectors.
3. Industry-Academia Collaboration to Address High-Voltage & High-Temperature Pain Points
Manufacturers cooperate with universities to develop modified mica materials exclusive for new energy, boosting corona resistance and thermal shock resistance. Custom mica products are developed for semi-solid batteries and ultra-high-voltage fast charging platforms to resolve key issues including thermal propagation and voltage breakdown, enabling domestic high-performance mica materials to replace imported alternatives.
Long-term Prospects: Mica Enters Steady Growth Amid New Energy Expansion
Industry research data indicates the global mica material market reached 18 billion RMB in 2022, and is projected to hit 41.81 billion RMB by 2027 with an annual compound growth rate of 18%. New energy vehicles and energy storage act as the core growth drivers.
The gradual phase-out of fuel vehicles is not a short-term market shift, but a long-term restructuring of the global energy mix and mobility patterns. Moving forward, the ownership of new energy vehicles will keep rising, alongside the expansion of large-scale energy storage stations, electric vessels and high-speed rail. Thermal and high-voltage insulation safety criteria for complete vehicles and storage equipment will only become stricter.
Restricted by their limited heat and flame resistance, organic insulating materials fail to resolve the safety bottlenecks of new energy. Inorganic fire-resistant insulating materials represented by mica will maintain an irreplaceable core position for a long time. Leveraging full industrial chains, self-developed technologies and mass production advantages, the mica manufacturing sector will be deeply integrated into the green mobility track. Amid the wave of fuel vehicle exit and booming new energy development, it will continuously build robust thermal and high-voltage safety barriers for electrical equipment worldwide.
Though often overlooked, mica delivers indispensable safety guarantees for low-carbon mobility, serving as an invisible core supporting material behind the thriving new energy industry.
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