Method of producing fiber assembly and method of producing prepreg sheet
AssigneeMitsubishi Chemical Corporation
InventorsKazuki Tsujikawa, Takeshi Ishikawa, Jun Matsui, Masashi Ikeda
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Abstract
A method for producing a fiber assembly, including: putting a plurality of fibers and a fiber treatment agent into a stirring tank; and stirring a mixture of the fibers and the fiber treatment agent with a stirring blade to granulate the mixture, wherein the fibers include carbon fibers, and the mixture is granulated such that the fibers are aligned. A method for producing a fiber assembly, wherein a plurality of fibers containing carbon fibers and a liquid are put into a stirring tank and the mixture of the fibers and the liquid is stirred with a stirring blade, thereby obtaining a fiber assembly which has a spheroidal shape or a strand shape.
Claims14
A method of producing a fiber assembly, comprising:
- heat treating a plurality of fibers in a cotton form in an oxidizing atmosphere to remove resin residue included in the plurality of fibers,
- putting the plurality of fibers and a fiber treatment agent into a stirring tank;
- and
- stirring a mixture of the plurality of fibers and the fiber treatment agent with a stirring blade to granulate the mixture so that the plurality of fibers are aligned;
- wherein the plurality of fibers includes carbon fibers,
- the plurality of fibers has an average fiber length of 2 to 12 mm, and
- the fiber assembly has a bulk density of 0.3 g/cm3 or more.
Dependencies are inferred from the claim text.