Pi (stylized as π) [a] is a 1998 American conceptual psychological thriller film written and directed by Darren Aronofsky (in his feature directorial debut). Pi was filmed on high-contrast black-and-white reversal film. The title refers to the mathematical constant pi.

Pi: Directed by Darren Aronofsky. With Sean Gullette, Mark Margolis, Ben Shenkman, Pamela Hart. A paranoid mathematician searches for a key number that will unlock the universal patterns found in nature.

电工级pi膜因要求较低国内已能大规模生产且性能与国外产品没有明显差别；电子级pi膜是随着 fccl 的发展而产生的，是pi膜最大的应用领域，其除了要保持电工类pi膜优良的物理力学性能外，对薄膜的 热膨胀系数 ，面内 各向同性 （厚度均匀性）提出了更严格的 ...

什麼是pi膜？聚醯亞胺膜用途是什麼？解析聚醯亞胺薄膜的特性、如何生產製備pi膜、產品應用及全球pi膜產業概況，pi膜是世界上性能最好的薄膜類絕緣材料。

英文名(polyimide film;PI film)，包括均苯型聚酰亚胺薄膜和联苯型聚酰亚胺薄膜两类。 前者为美国杜邦公司产品，商品名Kapton，由均苯四甲酸酐与二氨基二苯醚制得。

聚酰亚胺是分子结构含有酰亚胺基链节的芳杂环高分子化合物，英文名Polyimide(简称 PI) ，是目前工程塑料中耐热性最好的品种之一。PI作为一种特种工程材料，已广泛应 用在航空、航天、微电子、纳米、液晶、分离膜、激光等领域。

聚醯亞胺薄膜(PI 膜)是一個種耐熱性佳的高分子薄膜，具有優異的物理，化學和電性特性，其操作區間可在較寬廣的溫度範圍下使用，依據不同應用開發不同屬性PI膜 (Polyimide Film):

PIAM : Polyimide Film for FCCL and FPCs PI Advanced Materials is supplying PI film as basic material for various fields such as smartphone, semiconductor, IT industry, space, aviation and industrial power generation. <Characteristics> ㆍHigh Thermal Properties ㆍMatching CTE with Copper ㆍ A variety of Thickness (5~75um) ㆍ FCCL, Coverlay ...

Twenty-five years later, Darren Aronofsky honored Pi's 25th anniversary with an 8K restoration for IMAX re-release on March 14, 2023. The film will be available digitally and on Blu-ray later this year.