公开(公告)号：US09745671B2

公开(公告)日：2017-08-29

申请号：US14897924

申请日：2014-07-24

Applicant: TOHO TENAX CO., LTD.

Inventor： Yoshinori Suzuki

IPC: D01F9/22 ,  D01F9/14 ,  D01F9/32 ,  C01B31/02

CPC classification number: D01F9/22 ,  C01B32/05 ,  C01B32/26 ,  D01F9/14 ,  D01F9/32 ,  D10B2101/12

Abstract: A carbonization method of carbonizing precursor fibers that are being conveyed includes carbonization performed using a plurality of carbonization furnaces for heating fibers arranged in the direction in which the fibers are conveyed. The plurality of carbonization furnaces include at least one carbonization furnace that heats the fibers using plasma when the fibers are passing through the inside of the at least one carbonization furnace. A carbon fiber production method includes a carbonization process of carbonizing precursor fibers that are being conveyed. The carbonization process is performed with the above carbonization method.

公开(公告)号：US10316433B2

公开(公告)日：2019-06-11

申请号：US15560634

申请日：2016-03-29

Applicant: TOHO TENAX CO.,LTD.

Inventor： Yoshinori Suzuki ,  Toshimichi Nakajima

IPC: D01F9/12 ,  D01F9/32 ,  D01F9/22 ,  D06M15/41 ,  D06M15/51 ,  D06M15/55 ,  D06M15/564 ,  C01B32/05 ,  D06M101/40

Abstract: Carbon fibers having a high tensile strength satisfy the relationship represented by formula (1) and one of the relationships represented by formulas (2) to (5): La≥1  (1), La≤−0.5+0.01×TM when 170≤TM≤230  (2), La≤−37.3+0.17×TM when 230

公开(公告)号：US20140057515A1

公开(公告)日：2014-02-27

申请号：US13981807

申请日：2012-03-21

Applicant: TOHO TENAX CO., Ltd.

Inventor： Takaya Suzuki ,  Toyoaki Ishiwata ,  Yoshinori Suzuki ,  Hiroshi Numata

IPC: D06M15/55 ,  B29D7/01

CPC classification number: D06M15/55 ,  B29C70/504 ,  B29D7/01 ,  C08G59/5033 ,  C08J5/24 ,  C08J2363/00 ,  C08L63/00 ,  Y10T442/2049

Abstract: The present invention provides a prepreg comprising: a primary pre-pregnant made of a reinforced fiber substrate and an epoxy resin composition containing at least epoxy resin and thermoplastic resin impregnated into the reinforcing fiber that forms the reinforced fiber substrate; and a surface layer made of epoxy resin composition containing at least an epoxy resin and an epoxy resin-soluble thermoplastic resin that dissolves in the epoxy resin, the surface layer being formed on one or both surfaces of the primary prepreg; the prepreg being characterized in that only one of either the epoxy resin composition of the primary prepreg or the epoxy resin composition of the surface layer contains a hardening agent for an epoxy resin.

Abstract translation: 本发明提供一种预浸料坯，其特征在于，包括：由增强纤维基材制成的初级预浸料和至少含有环氧树脂和浸渍在形成增强纤维基材的增强纤维中的热塑性树脂的环氧树脂组合物; 以及由环氧树脂组合物构成的表层，其至少含有环氧树脂和可溶于环氧树脂的环氧树脂可溶性热塑性树脂，所述表面层形成在所述一次预浸料的一个或两个表面上; 预浸料的特征在于，一次预浸料的环氧树脂组合物或表面层的环氧树脂组合物中只有一种含有环氧树脂用硬化剂。