公开(公告)号：US20240426034A1

公开(公告)日：2024-12-26

申请号：US18822718

申请日：2024-09-03

Applicant: MITSUBISHI CHEMICAL CORPORATION

Inventor： Masashi IKEDA ,  Kazuki TSUJIKAWA ,  Takeshi ISHIKAWA ,  Jun MATSUI

IPC: D04H1/60 ,  C08J5/04 ,  C08J5/24 ,  D04H1/4218 ,  D04H1/4242 ,  D04H1/4382 ,  D04H1/54 ,  D04H1/587

Abstract: Provided are a method for producing a carbon fiber bundle composite and a carbon fiber bundle composite. The method contains a step of mixing carbon fiber fluff made of short carbon fibers and a molten resin containing an epoxy resin component to obtain a carbon fiber bundle containing the molten resin, a step of solidifying the molten resin, and a step of mixing at least one type of epoxy curing agent into the molten resin. The carbon fiber bundle composite contains a plurality of short carbon fibers forming the bundle and an uncured solid epoxy resin composition. The positions of the tips of the short carbon fibers are uneven at each end of the bundle; and the uncured solid epoxy resin composition contains at least one type of epoxy curing agent.

公开(公告)号：US20240326293A1

公开(公告)日：2024-10-03

申请号：US18535665

申请日：2023-12-11

Applicant: Mitsubishi Chemical Corporation

Inventor： Kazuki TSUJIKAWA ,  Takeshi ISHIKAWA ,  Jun MATSUI ,  Masashi IKEDA

IPC: B29B9/14 ,  B29B17/04 ,  B29K105/12 ,  B29K105/26 ,  B29K307/04

CPC classification number: B29B9/14 ,  B29B2017/0496 ,  B29K2105/12 ,  B29K2105/26 ,  B29K2307/04 ,  B29K2995/0063

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.