Development of High-Efficiency, Continuous Process for Production and Surface Modification of Whiskers and Evaluation of Modified Whiskers as Composite material Element

开发高效、连续的晶须生产和表面改性工艺以及改性晶须作为复合材料元件的评估

• 批准号: 03453127
• 负责人: MOROOKA Shigeharu
• 金额: $ 3.78万
• 依托单位: 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: 1991
• 资助国家: 日本
• 起止时间: 1991 至 1992
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-03453127/
• 关键词: Ceramics; Wisker; CVD; Composite Material; Surface Modification; ウィスカ-; カ-ボンファイバ; コ-ティング; 流動層

1. Carbon wisker was produced in a tubular flow reactor by feeding ferrocene, thiophene and benzene as the reactants.2. Fine iron particles produced from ferrocene were sulfurized with thiophene, and acted as the catalyst for carbon wisker. Carbonaceous precursor generated by cracking of benzene was dissolved in a molten catalyst particle, and deposited as a wisker at the opposite side of the particle. The wisker formation thus consisted of a sequence of different reactions, and reactant concentrations and reaction temperature has to be precisely controlled.3. The sulfur source was changed to hydrogen sulfide, which expanded reaction conditions for wisker formation. Various carbon sources were also tested.4. Catalyst particles were formed on the surface of granular carbon particles, which were fluidized by ascending gas. By applying the fluidized bed system, the residence time of wisker in the bed was freely controlled.. Carbon wisker was coated by a CVD method with SiC thin film that prevented the wisker from reaction with a matrix component.6. Aluminum borate wisker was coated with electroconductive tin oxide film.

1. 以二茂铁、噻吩和苯为原料，在管流式反应器中制备碳晶须。用噻吩对二茂铁制备的细铁颗粒进行硫化，作为碳晶化的催化剂。将苯裂解产生的碳质前驱体溶解在熔融的催化剂颗粒中，并以晶须的形式沉积在颗粒的另一侧。因此，晶须的形成由一系列不同的反应组成，反应物浓度和反应温度必须精确控制。将硫源改为硫化氢，扩大了生成晶须的反应条件。还对各种碳源进行了测试。在颗粒状碳颗粒表面形成催化剂颗粒，通过升压气体使颗粒状碳颗粒流化。采用流化床系统，可自由控制晶须在床上的停留时间。采用CVD法在碳晶须表面涂覆SiC薄膜，防止晶须与基体组分发生反应。在硼酸铝晶须表面涂覆导电氧化锡薄膜。

项目成果

A.Kobata,K.Kusakabe,S.Morooka: "Growth and Crystal Transformation of TiO_2 Crystallites in Aerosol Reactor" AIChE J.37. 347-359 (1991)

A.Kobata，K.Kusakabe，S.Morooka：“气溶胶反应器中 TiO_2 微晶的生长和晶体转变”AIChE J.37。

諸岡 成治: "流動層による粒子のドライプロッセッシング" FC Report. 9. 465-472 (1991)

Seiji Morooka：“使用流化床对颗粒进行干燥处理”FC 报告 9. 465-472 (1991)。

Takafumi Kato, et al: "Production of Vapor-Grown Carbon Fibers on a Substrate" Annual Rep.of HVEM Lab.,Kyushu Univ.No.16. 35-36 (1992)

Takafumi Kato 等人：“在基材上生产气相生长碳纤维”年度报告 HVEM 实验室，九州大学第 16 号。

T.Kato,K.Haruta,K.Kusakabe,S.Morooka: "Formation of VaporーGrown Carbon Fiber on a Substrate with High Population Density" Carbon.

T.Kato、K.Haruta、K.Kusakabe、S.Morooka：“在高密度基底上形成气相生长碳纤维”碳。

Takafumi Kato: "Process of Formation of Vapor-Grown Carbon Fibers by Gas-Phase Reaction Using Ultrafine Iron Catalyst Particles" J.Mater.Sci.Letters. 11. 674-677 (1992)

Takafumi Kato：“使用超细铁催化剂颗粒通过气相反应形成气相生长碳纤维的过程”J.Mater.Sci.Letters。