The reasons for choosing H-grade polyimide film as an interlayer insulating material for copper foil typically involve its superior performance and applicability. Here are some of the key reasons for selecting H-grade polyimide film:

High-temperature performance: H-grade polyimide film exhibits excellent high-temperature performance, typically remaining stable at temperatures above 150°C. This is crucial for electronic devices, circuit boards, and other high-temperature applications.

Electrical insulation properties: H-grade polyimide film has good electrical insulating properties, effectively isolating copper foil layers to prevent short circuits or interference in circuits. This is particularly important for high-density circuit boards and radio frequency (RF) applications.

Mechanical properties: H-grade polyimide film typically possesses good mechanical properties such as bending strength and wear resistance, making it suitable for various engineering applications, including flexible electronic devices and thin-film circuit boards.

Chemical stability: This polyimide film exhibits resistance to chemicals, withstanding the corrosion of certain solvents and chemicals, thus enhancing circuit stability.

Film thickness control: H-grade polyimide film can be manufactured in very thin layers, providing precise control over the spacing between copper foils, which is critical for high-density circuit design.

Radiation resistance: H-grade polyimide film generally offers good radiation resistance, making it suitable for applications in some radiation environments.

It's important to note that H-grade polyimide film is relatively expensive, so material selection should take into consideration performance requirements and cost. Additionally, specific application requirements and environmental factors can also influence material choice, so a careful evaluation of various factors is necessary based on the specific situation.

LuShan, est. 1975,  is a Chinese professional manufacturer specializing in power transformers and reactors for 48 years. Leading products are single-phase transformer, three-phase transformers, DC inductors, AC reactors, filtering reactor, expoxy resin high-voltage transformer and intermediate, high-frequency products. Our transformers and reactors are widely used in 10 application areas: rapid transit, construction machinery, renewable energy, intelligent manufacturing, medical equipment, coal mine explosion prevention , excitation system, vacuum sintering, central air conditioning.

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