采用一种新型的成膜技术——气相沉积聚合(V DP)法,利用热蒸发VDP沉积装置,以均苯四甲酸二酐和4,4-二氨基二苯醚为单体原料,通过控制加热温度、沉积速率和沉积时间,在玻璃衬底上沉积并合成聚酰胺酸(PAA)薄膜,再进行热亚胺化,就得到了成膜性能较好的PI薄膜.采用FTIR,TG,UV,AFM和接触角测试等分析手段对样品的性能进行了分析和探讨.结果表明:VDP法制备的PI薄膜具有高热稳定性、易透光性、低表面粗糙度和低表面能等优点,说明用该方法制备性能优异的PI薄膜是可行的.
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