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.

综述了芳香烃中间相沥青的制备、结构、性能及其在各种领域的应用，以阐明其在碳科学技术中的独特性质。研究发现，HF/BF3催化剂可将多种芳烃齐聚成从二聚体到十聚体的齐聚物，这些齐聚体携带着芳基生成的环烷氢，反映了它们的起始结构和聚合条件。例如，100%各向异性沥青的软化点在210-300ﾟC之间。中间相沥青在常压下表现出80-90%的良好碳产率，在3.1Mpa下表现出90%以上的碳产率。在空气中氧化的高反应性和在惰性气氛下的热稳定性是本沥青的另一个优点。这些性质使其在碳纤维、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了广泛的应用。

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)