UL-certified 0.25mm black PC polycarbonate film
This UL-certified 0.25mm black PC polycarbonate sheet, with its millimeter-thickness, meets the multiple requirements of flame retardancy, lightweighting, regulatory compliance, and aesthetics, becoming an "invisible fireproof guard" for key parts of electric vehicles.
- top leader plastic
- China
- 10-15 working days
- 500 tons/month
- Information
Fire prevention is a core concern throughout the safety system of new energy electric vehicles (especially pure electric vehicles). From the battery pack to the electronic control system, from the high-voltage wiring harness to the cabin interior, the materials selected for each component must undergo rigorous flame retardancy testing. Among the many fire-resistant materials, UL-certified 0.25mm black PC polycarbonate sheet, with its combination of thinness, high flame retardancy, and strong adaptability, has become the "safety standard" for key components in new energy electric vehicles. Today, we'll take a look at this material and see how, with its millimeter-level thickness, it supports the fire protection of electric vehicles.
The most critical fire protection areas in electric vehicles are the battery pack and the high-voltage electronic control system. Thermal runaway or short circuits in these two areas are highly susceptible to fire. The V-0 flame retardant properties of this PC sheet can effectively extinguish fires and prevent their spread at critical moments:
Quick self-extinguishing: If exposed to flames (such as a localized overheating in a battery pack), the material ignites and automatically extinguishes within 10 seconds, preventing continued combustion.
No dripping, no ignition: The combustion process produces no dripping (preventing ignition of other components below) and releases no combustion-supporting gases, effectively controlling the spread of fire at the source.
Sustainability in low-temperature environments: Even at temperatures as low as -40°C (such as winter in northern China), the material's flame retardant properties do not degrade, preventing a decrease in fire resistance due to temperature fluctuations.
Test data from a new energy vehicle company shows that using this PC sheet in battery pack separators reduces the flame spread rate by 60% compared to using conventional flame retardant materials in a simulated localized thermal runaway scenario, buying critical time for the battery pack's thermal runaway warning and fire extinguishing systems to activate.
New energy electric vehicles contain numerous electronic components (such as the battery management system (BMS) and central control screen), creating a clear need for light-blocking and anti-glare protection. Black PC sheets precisely meet these requirements:
Light-blocking protection: Black effectively blocks light penetration. When used as the cover on the top of the battery pack, it prevents direct sunlight from affecting the battery's temperature stability (especially when parked outdoors in the summer).
Anti-glare interference: When used on instrument panel trim and central control panels within the cabin, the black surface prevents light from reflecting and causing glare, enhancing the driver's visual comfort.
Uniform appearance: New energy electric vehicles often feature minimalist, technologically advanced interior designs. Black PC sheets can create a unified look with other black body components (such as seats and steering wheels), enhancing the overall visual quality of the vehicle.
Practical Applications: These critical areas are all covered.
In new energy electric vehicles, this UL-certified 0.25mm black PC sheet has a wide range of applications, primarily focused on areas requiring both high fire resistance and lightweighting:
1. Battery Pack: Fireproof Partitions and Insulation
The battery pack is the heart of the electric vehicle and the core area for fire protection. This PC sheet is primarily used for:
Cell Separators: These are placed between the cells in the battery pack. If a cell experiences thermal runaway, they prevent the spread of flames to adjacent cells, slowing the spread of thermal runaway.
High-Voltage Wiring Harness Protective Covers: These protect the high-voltage wiring harnesses (such as the positive and negative terminals) leading out of the battery pack. They provide V-0 flame retardancy and, through PC's electrical insulation (UL certification includes insulation testing), prevent short circuits. 2. Electronic Control System: Flame-Retardant Isolation and Exterior Components
The electronic control system (such as the motor controller and on-board charger (OBC)) is the "brain" of an electric vehicle. It contains numerous high-voltage components and requires flame-retardant materials for isolation:
Controller Housing Liner: Lined inside the metal housing of the electronic control unit. If an internal short circuit generates an arc, it prevents ignition of plastic components within the housing and reduces arc damage to the housing.
Connector Protective Cover: Protective cover for high-voltage connectors. The black design provides anti-glare and flame-retardant properties prevent high temperatures from igniting surrounding materials due to poor connector contact.
