| 1 | The production technology, applications and product prices of polyimide film were overviewed in this article. | |
| 2 | The effect and characteristic of the photosensitive diamidogen in the synthesis of photosensitive polyimides are described. | |
| 3 | Thermal expand coefficient of polyimide films at each temperature was measured in the process of thermal cycling. | |
| 4 | Then, the array was got soaked in liquid polyimide so as to make a sub-micron insulating layer, and it was evaporated. | |
| 5 | This paper reviews the research progress in sulfonated polyimidesas materials for proton exchange membrane fuel cell. |