symtheses of new carbonaceous mesophase pitch using HF/BF_3

HF/BF_3合成新型碳质中间相沥青

• 批准号: 02453087
• 负责人: MOCHIDA Isao
• 金额: $ 4.35万
• 依托单位: Institute of Advanced Material Study, Kyushu University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1990
• 资助国家: 日本
• 起止时间: 1990 至 1991
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-02453087/
• 关键词: carbonaceous liquid crystal; HF; BF_3; naphthalene; methylnaphthalene; pitch based carbon fiber; carbon materials; carbon-carbon composite; mesophase

Preparation, structure, properties and a variety of application of mesophase pitches from aromatic hydrocarbons were examined to clarify their unique natures in the carbon science and technology. It was found HF/BF_3 catalyst oligomerizes a variety of aromatic hydrocarbons into oligomeras ranging dimers to decamers, which carries naphthenic hydrogens produced through aryl-reflecting their starting structure and polymerization conditions. For example, softening points of 100% anisotropic pitch range from 210 to 300ﾟC. The mesophase pitches showes excellent carbon yields of 80-90% under atmospheric pressure and over 90% under 3.1 MPa. High reactivity for oxidation in the air and thermal stability under inert atmosphere are additional advantage of the present pitch. Such properties allow a number of their applications for the carbon fiber, carbon tape, composites, high density carbon, porous carbon composite and carbon ceramic composite.

对芳烃中间相沥青的制备、结构、性能和各种应用进行了研究，以阐明其在碳科学和技术中的独特性质。研究发现HF/BF_3催化剂可以将多种芳香烃齐聚成二聚体到十聚体的低聚物，这些低聚物带有通过反映其起始结构和聚合条件的芳基产生的环烷氢。例如，100%各向异性沥青的软化点范围为210℃至300℃。中间相沥青表现出优异的碳产率，在大气压下可达80-90%，在3.1 MPa下可达90%以上。在空气中的高氧化反应性和在惰性气氛下的热稳定性是本发明沥青的额外优点。这些特性使其能够在碳纤维、碳带、复合材料、高密度碳、多孔碳复合材料和碳陶瓷复合材料中得到广泛应用。

项目成果

Isao Mochida: "Blending of Mesophase Pitches to Enhance Their Stabilization Reactivity" Tanso. 149. 191-196 (1991)

Isao Mochida：“混合中间相沥青以增强其稳定反应性”Tanso。

Isao Mochida: "Mesophase pitch catalytically prepared from anthracene with HF/BF_3" Carbon.

Isao Mochida：“由蒽与 HF/BF_3 催化制备的中间相沥青”碳。

Isao Mochida: "The introduction of a skin-core structure in mesophase pitch fibers through a successive stabilization by oxidation and solvent extraction" Carbon. 29. 23-29 (1991)

Isao Mochida：“通过氧化和溶剂萃取的连续稳定，在中间相沥青纤维中引入皮芯结构”碳。

Isao Mochida: "Mesophase pitch catalytically prepared from anthracene with HF/BF_3" Carbon. 30. 55-61 (1992)

Isao Mochida：“由蒽与 HF/BF_3 催化制备的中间相沥青”碳。

Isao Mochida: "The introduction of a skinーcore structure in mesophase pitch fibers through a successive stabilization by oxidation and solvent extraction" Carbon. 29. 23-29 (1991)

Isao Mochida：“通过氧化和溶剂萃取连续稳定，在中间相沥青纤维中引入皮芯结构”Carbon。29. 23-29 (1991)