Preparation and thermo-mechanical properties of 4-component polyimide films

Abstract

To enhance the thermo-mechanical properties of polyimide films which have potential application for the FCCL, we have synthesized the poly(amic acid)s composed of 4-components PMDA/BTDA and PDA/ODA as monomer system, and then they were effectively converted into 4-component polyimide films by thermal imidization process. It has been found that CTE values in the range of 100 similar to 200 degrees C dcreased with the amount of PDA, which also caused 36% and 59% increases in tensile modulus and strength respectively. And also. peel test results on 3-layered copper clad laminate using 4-component polyimide films showed excellent adhesion strength above 1.8 kgf/cm. On the basis of obtained results it can be concluded that 4-component polyimide films may be applied for the high performance FCCL base films.