【摘要】 本文通过研究、分析 ,选择用偏光显微镜测定聚酰亚胺薄膜双折射的方法 ,解决了聚酰亚胺薄膜分子取向的评定问题。更多还原

【Abstract】 The paper studies the measuring birefraction method of polyimide film by polarized microscope.It can be easy to evaluate the molecular oriention extent of polyimide film.Compare with X-ray method,it is more convenient,exact,cheap and its result contain molecular oriention in crystal and noncrystal phase.更多还原