发明授权
- 专利标题: Optically anisotropic pitch for manufacturing high compressive strength carbon fibers and method of manufacturing high compressive strength carbon fibers
- 专利标题(中): 用于制造高抗压强度碳纤维的光学各向异性节距和制造高抗压强度碳纤维的方法
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申请号: US306222申请日: 1994-09-15
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公开(公告)号: US5540905A公开(公告)日: 1996-07-30
- 发明人: Tsutomu Naito , Takashi Hino , Masaru Miura , Kazuyuki Murakami
- 申请人: Tsutomu Naito , Takashi Hino , Masaru Miura , Kazuyuki Murakami
- 申请人地址: JPX Tokyo JPX Tokyo
- 专利权人: Tonen Corporation,Mitsubishi Gas Chemical Co., Inc.
- 当前专利权人: Tonen Corporation,Mitsubishi Gas Chemical Co., Inc.
- 当前专利权人地址: JPX Tokyo JPX Tokyo
- 优先权: JPX3-194723 19910709
- 主分类号: C10C3/02
- IPC分类号: C10C3/02 ; C10C3/08 ; D01F9/145 ; D01F9/155 ; C08L95/00
摘要:
An optically anisotropic pitch, which is suited for manufacturing particularly high compressive strength carbon fibers in a stable fashion, with satisfactory productivity and continuously, and also a method of manufacturing high compressive strength carbon fibers using the optically anisotropic pitch.The optically anisotropic pitch for manufacturing high compressive strength carbon fibers is composed of a benzene soluble component (BS) and a benzene insoluble component (BI) and has a Q value (i.e., weight-average molecular weight divided by number-average molecular weight) of 1.6 or below, a number-average molecular weight ratio of the benzene soluble component to the benzene insoluble component of 2.5 or below, an aromatic carbon fraction factor (fa) of 0.8 or below, a C/H atomic ratio of 1.85 or below and an optically anisotropic phase of 90% or more.
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