Flame-retardant PC, PP, and PVC bent Mylar sheets are key materials in the field of electronic insulation, and are widely used in high-demand scenarios such as new energy batteries and automotive electronics due to their flame-retardant properties, electrical insulation, and ease of processing (especially the bending adaptability).
Key features:
- Flame retardancy: Up to UL94 V-0 level, halogen-free models (such as PC-1860B) comply with environmental standards like RoHS and REACH.
- Temperature resistance: Long-term resistance to 120°C - 135°C, short-term up to 150°C.
- Mechanical properties: High impact resistance (strength is over 250 times that of glass), but with high brittleness, and care should be taken regarding stress cracking risks during bending.
- Electrical properties: Surface insulation resistance up to 10¹⁵ Ω, with EMI shielding function (when adhered to metal foil).
- Processing properties: Support for die-cutting, hot pressing, and bending, with matte/sanded surface treatment (such as one side of PC1860B being matte and the other side sandblasted).
Typical applications:
- New energy batteries: Battery pack cover insulation pads (high temperature + flame retardant).
- High-precision electronics: Display mainboard insulation, keyboard backlight film, power supply.
- Structural components: Printed panels (utilizing its surface decorative properties).
II. Flame-retardant PP Mylar sheet
Key features:
- Flexible and fold-resistant: Soft material, not prone to breakage even after repeated bending, with better processing performance than PC/PET.
- Flame retardancy and temperature resistance: 94V-0 flame retardant grade, long-term resistance to 115°C.
- Chemical stability: Resistant to acid and alkali corrosion, suitable for humid environments.
- Thickness range: 0.125 - 1.5mm, mainly thin type.
Typical applications:
- Battery buffer pads: Internal buffer separators in new energy battery packs (such as MPP foam composite).
- Coil/motor insulation: Motor slot gasket, transformer interlayer insulation.
- Soft packaging: Need for multiple bends, such as cable wrapping and flexible circuit board substrate.
III. Flame-retardant PVC Mylar sheet
Key features:
- Basic flame retardancy: Up to 94V-0, but the lowest temperature resistance (≤90°C).
- Cost advantage: The lowest price, suitable for non-high-temperature scenarios.
- Convenient processing: Easy die-cutting, back adhesive composite, multiple colors (white, black, transparent).
Typical applications:
- Consumer electronics: Charging pad internal insulation sheet, low-voltage circuit separation.
- Appearance protection: Household appliance surface decorative film, screen protection pad.