| abstract |
The invention relates to the technical field of polymer materials, in particular to a transparent polymer material composition and its application. The polymer material composition of the present invention is prepared from the following components in parts by weight: 17-35 parts of aromatic tetracarboxylic dianhydride, 0.5-1 part of long-chain aliphatic diamine, 15-25 parts of aromatic diamine parts, 100-170 parts of solvent. The polymer material composition is coated on copper foil through a coating process, and a transparent polyimide layer is formed by baking to obtain a single-sided copper clad laminate; two sets of single-sided copper clad laminates are pressed to obtain a double-sided cladding copper plate. The invention effectively improves the light transmittance of the polyimide by introducing the alicyclic structure, making the PI transparent, and at the same time, the introduction of the long-chain structure reduces the glass transition temperature Tg of the transparent PI, and effectively improves the processability of the transparent PI. reduce its production cost. |