Polyimide-Classification-Custom Design Circuit

Board Electronic Pcb

Classification

According to the composition of their main chain, polyimides can be:

• Aliphatic (linear polyimides),

• Semi-aromatic,

• Aromatic: these are the most used polyimides because of their thermostability.

According to the type of interactions between the main chains, polyimides can be:

• Thermoplastic: very often called pseudothermoplastic.

• Thermosetting: commercially available as uncured resins, polyimide solutions, stock shapes, thin sheets, laminates and machined parts.