Polyimide (PI) tapes (e.g., Kapton®) can withstand short-term exposure up to 300°C and long-term use at 260°C.
PET tapes offer long-term耐温性能 of 180°C and short-term耐温性能 of 200°C.
Iron-fluorine (PTFE) tapes have a continuous operating temperature of -70°C to 260°C and short-term耐温性能 of 320°C.
Initial adhesion: Measured using tests like the "初粘环试验" (GB/T 4852-2002), which evaluates adhesion under high-temperature conditions.
Shear adhesion: Tested usingASTM D3654, which assesses the tape’s ability to resist sliding under constant load at elevated temperatures.
Repeatability: High-quality tapes maintain adhesion after multiple cycles of heating and cooling.
PI tapes and PET tapes are widely used for绝缘保护 in electronics, such as protecting PCB金手指 during wave soldering.
Iron-fluorine tapes offer high介电强度 (up to 6KV) and resist electrical interference.
PI tapes are resistant to strong acids (e.g., nitric acid) and organic solvents.
PET tapes are耐酸碱 and耐溶剂, making them suitable for electroplating遮蔽.
Tensile strength: PI tapes have a tensile strength of 135 N/25mm, while PET tapes offer 140 N/25mm.
Flexibility: PET tapes can be bent repeatedly without cracking, while PI tapes maintain柔韧性 at low temperatures (-268°C).
PCB protection: PI and PET tapes遮蔽金手指 during wave soldering and reflow焊接.
Component fixation: Used to secure resistors, capacitors, and sensors in high-temperature environments.
Engine compartment insulation: Protects cables and wires from高温 and腐蚀.
Paint masking: PET tapes遮蔽汽车车身在喷涂过程中。
Thermal shielding: PI tapes insulate avionics and fuel systems.
Cable management: Iron-fluorine tapes固定高温区域的电缆。
Pipe insulation: PET tapes protect管道在高温环境下。
Solar panel封装: PI tapes用于光伏组件的绝缘和密封。
Material | Base Material | Long-Term耐温性能 | Short-Term耐温性能 | Key Applications |
---|---|---|---|---|
PI tape | Polyimide | 260°C | 300°C | PCB遮蔽、绝缘 |
PET tape | Polyester | 180°C | 200°C | 喷涂遮蔽、电镀 |
Iron-fluorine tape | PTFE | -70°C to 260°C | 320°C | 电气绝缘、高温粘合 |
Initial adhesion test: Using a滚球法 (GB/T 4852-2002) to measure adhesion under high-temperature conditions.
Shear adhesion test:ASTM D3654评估剪切强度。
High-temperature aging: Exposing tapes to 260°C for 30 minutes to check for残胶 or shrinkage.
Dielectric strength: Measured usingASTM D150评估介电常数。
Cost: High-performance materials like PI are expensive.
Environmental concerns: Some adhesives contain volatile organic compounds (VOCs).
Material innovation: Development of纳米复合材料 to enhance耐高温性和导热性.
Green adhesives: Formulations using无毒、环保的胶粘剂.
Multifunctional tapes: Integrating导热、电磁屏蔽等功能.