Pitch-based carbon fiber having excellent compression property and production thereof专利检索- 焦油沥青石油沥青天然沥青的加工石油沥青和其他天然沥青材料的组成入 C08L 95/00专利检索查询-专利查询网

Pitch-based carbon fiber having excellent compression property and production thereof
申请号	JP16068388	申请日	1988-06-30	公开(公告)号	JPH0214023A	公开(公告)日	1990-01-18
申请人	Nippon Oil Co Ltd;			发明人	TAKASHIMA HIROAKI; KATO OSAMU; AZAMI KIYOSHI; NAKAJIMA HAJIME;
摘要	PURPOSE: To obtain the subject pitch-based carbon fiber having novel structure by spinning pitch containing specific amount of optically anisotropic phase obtained by hydrolyzing carbonaceous pitch, heat treating and extracting with respectively specific two organic solvents, infusibilizing and carbonizing. CONSTITUTION: Carbonaceous pitch is hydrolyzed with hydrolyzing catalyst and ≥2mol hydrogen per a pitch molecule is added, then heattreated under normal pressure or reduced pressure, thus pitch containing 5-40vol% optically anisotropic phase. Said pitch is extracted with an organic solvent having 7.4-9.0 solubility parameter at 25°C and insoluble component is extracted with an organic solvent having 9.2-11.0 solubility parameter at 25°C, then soluble component is spun, infusibilized and carbonized to obtain the aimed pitch-based carbon fiber having ≥50vol% fine texture comprising of respectively ≤1000Å La and Lc values in X-ray diffraction and ≤1000Å fibril width, 1.95-2.12g/cm 3 density and a relation expressed by the formula of layer spacing d 002 in X-ray diffraction and density. COPYRIGHT: (C)1990,JPO&Japio
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