Polyimide may adopt a thin film structure, which gives it certain advantages such as bendability and flexibility. Even though polyimide circuit boards have high flexibility, they also have excellent tensile strength, which means they can withstand heavy loads.
Polyimide PCB materials also have the characteristic of being resistant to corrosive chemicals. Its chemical structure is not easily degraded when interacting with solvents and substances. This feature makes it more suitable for medical applications.
Polyimide circuit boards can resist degradation even at high temperatures. The thermal stability of polymers is measured using a thermogravimetric analysis system, where mass loss is a function of time at a constant temperature. It can withstand temperatures ranging from 300 to 500 degrees Celsius, and its maximum operating temperature is the highest among other polymers.
Polyimide circuit boards also have good electrical properties, such as low dielectric constant and good electrical insulation performance. It is particularly suitable for high-pressure industrial applications. The low dielectric constant of polyimide circuit boards helps maintain signal integrity and reduce unnecessary capacitance between adjacent conductive traces.
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