Polyimide fiber paper using thermoplastic polymer
AssigneesDu Pont-Toray Co., Ltd., Toyota Tsusho Matex Corporation
InventorsHideaki Machida, Gen Ueta, Naruaki Takahashi
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Abstract
A method is provided for manufacturing a polyimide fiber paper intermediate structure, which includes: a short fiber preparing step for preparing shaved short fibers of a non-thermoplastic polyimide; and an intermediate structure forming step for forming a polyimide fiber paper intermediate structure in which the short fibers are temporarily bonded using a water-soluble and/or water-insoluble thermoplastic polymer having a melting point lower than a glass transition point of a polyimide.
Claims9
A method for manufacturing a polyimide fiber material, the method comprising:
- a short fiber preparing step for preparing shaved short fibers of a non-thermoplastic polyimide, fiber lengths of the short fivers being in a range of 1 mm to 10 mm;
- and
- an intermediate structure X forming step for forming a polyimide fiber paper intermediate structure X in which the short fibers are temporarily bonded using a water-insoluble thermoplastic polymer having a melting point lower than a glass transition point of a polyimide.
Dependencies are inferred from the claim text.