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AssigneeInstitute of Chemistry, Chinese Academy of Sciences
InventorsShiyong YANG, Jianjun HE, Haixia YANG, Zhiyuan WANG
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Provided are a polyimide film, preparation method, and application thereof. The polyimide film is a colorless transparent film with low thermal expansion. The polyimide film is obtained by taking a mixture of rigid aromatic diamine and fluorine-containing aromatic diamine, a mixture of rigid aromatic tetracarboxylic dianhydride and fluorine-containing aromatic tetracarboxylic dianhydride as raw materials, mixing the raw materials to obtain a resin solution, and then conducting imidizing and post-treating. The polyimide film not only has excellent transparency, but also has the advantages of low thermal expansion, high modulus, high glass transition temperature, and so on, and can be well applied to a flexible optoelectronic display substrate, a flexible printed circuit board, or an electronic packaging substrate.
A polyimide film comprising a colorless transparent film with low thermal expansion, wherein the polyimide film is obtained by mixing raw materials to obtain a resin solution, and conducting imidizing and post-treating, the raw materials comprise a mixture of rigid aromatic diamine and fluorine-containing aromatic diamine, and a mixture of rigid aromatic tetracarboxylic dianhydride and fluorine-containing aromatic tetracarboxylic dianhydride.
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A method for preparing a polyimide film with colorless, transparent, and low thermal expansion, comprising:
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