The present invention relates to a method for producing a polyimide insulating coating layer, the method comprising a step of:
applying a polyimide precursor composition to a substrate and baking the composition on the substrate,
wherein the polyimide precursor composition comprises a polyamic acid and a basic compound selected from the group consisting of imidazoles and amine compounds, and
wherein in the baking step,
the length of time for which the polyimide precursor composition is heated is 10 seconds to 180 seconds;
the average temperature increasing rate from 100°C to 280°C is 5°C/s or more; and
the highest heating temperature is 300°C to 500°C.
                            本发明涉及一种生产聚
酰亚胺绝缘涂层的方法,该方法包括以下步骤
将聚
酰亚胺前体组合物涂在基底上,并在基底上烘烤该组合物、
其中,聚
酰亚胺前体组合物包括聚酰胺酸和选自
咪唑类和
胺类化合物的碱性化合物,以及
其中在烘烤步骤中
加热聚
酰亚胺前体组合物的时间长度为 10 秒至 180 秒;
从 100°C 至 280°C 的平均升温速度为 5°C/s 或以上;以及
最高加热温度为 300°C 至 500°C。