Polyimide tape, commonly known as Kapton tape, is a special tape with polyimide film as the base material and coated with silicone or acrylic glue. Its core features include:
Extreme temperature resistance: -269℃~260℃ continuous operation
Ultra-high insulation strength: dielectric strength ≥6kV/mm
Ultra-thin flexibility: thickness 0.03-0.15mm, suitable for precision parts
Chemical inertness: acid, alkali, solvent corrosion resistance
Core application areas
Electronic component manufacturing
Pad shielding; Prevent wave soldering tin leakage
New energy vehicles
Power battery module insulation; Motor winding high temperature protection
Aerospace
Satellite circuit insulation; Rocket engine wiring harness bundling
Flexible display technology
OLED screen bonding; Anti-fingerprint nano-coating substrate
Selection technology guide
1. Thickness selection logic
Below 0.05mm: mobile phone camera module, micro sensor
0.08-0.12mm: automotive wiring harness wrapping, PCB board shielding
2. Adhesive system selection strategy
Silicone: excellent high temperature resistance (300℃+), but weak adhesion
Acrylic adhesive: strong room temperature adhesion (initial peel force is 30% higher), upper temperature resistance limit is 180℃
3. Safety certification investigation
EU: EN 45545-2 rail transit fire protection certification
North America: UL 94 V-0 flame retardant grade
Japan and South Korea: JIS Z2801 antibacterial test
FAQ
Q: What is the difference between polyimide tape and Teflon tape?
A: Polyimide has higher temperature resistance (260℃ vs 200℃), and the tear strength is increased by 3 times
Q: Will it become brittle after long-term use?
A: High-quality products pass a 2000-hour wet heat aging test (85℃/85%RH), and the elongation remains>80%
Q: How to avoid residual glue after tearing?
A: Choose glue with a curing degree of>95%, or use the heating degumming method.