Electro-Conductive Ceramics Fiber from Polymeric Precursor

Research Project

Project/Area Number	62470095
Research Category	Grant-in-Aid for General Scientific Research (B)
Allocation Type	Single-year Grants
Research Field	高分子物性
Research Institution	Kyoto Institute of Technology
Principal Investigator	KITAO Toshio Kyoto Institute of Technology, Faculty of Textile Science Professor, 繊維学部, 教授 (70027879)
Co-Investigator(Kenkyū-buntansha)	YAMANE Hideki Kyoto Institute of Technology, Faculty of Textile Science Instructor, 繊維学部, 助手 (30191365) KIMURA Yoshiharu Kyoto Institute of Technology, Faculty of Textile Science, Associate Professor, 繊維学部, 助教授 (10132276)
Project Period (FY)	1987 – 1988
Project Status	Completed (Fiscal Year 1988)
Budget Amount *help	¥4,900,000 (Direct Cost: ¥4,900,000) Fiscal Year 1988: ¥1,600,000 (Direct Cost: ¥1,600,000) Fiscal Year 1987: ¥3,300,000 (Direct Cost: ¥3,300,000)
Keywords	poly[(acyloxy)aloxane] / anisic acid / dry-spun filament / calcination / alumina fiber / electro-conducting filament / 電気伝導性 / ポリアロキサン / 直鎖高分子 / ブレンド / 乾式紡糸 / 炭素含有アルミナ繊維 / 電気伝導度 / 伝導性アルミナ繊維 / 芳香族有機酸 / 10^2S cm^<-1>
Research Abstract	A poly[(acylocy)aloxane] was synthesized by a multistage reaction of triethyl-aluminum with water, 3-ethoxy propanoic acid, and m-anisic acid and then dry-spun into fine filaments. The asspun filament thus obtained was calcined in an electric furnace in nitrogen atmosphere up to 1200 ゜c. The electric volume conductivity of the resultant alumina filaments was ecaluated at temperatures ranging from 0 to 400 ゜c by using a four terminal technique. The volume conductivity was an increasing function of the calcination temperature and of the measuring temperature as well. The highest value ca. 1x10^2 S cm^<-1>, wsa recorded for the filament heated up to 1200 ゜C. An alternative principle employed in the present study was the use of bi-component polyblends comprising poly[(acyloxy)aloxane] and one of the thermally stable linear polymers with superior spinnability. An ultra high molecular weight polye-thylene and a moderate molecular weight poly(acrylo nitrile) were employed as the co-component of the blends. A concentrated decaline solution of poly[(acylocy)aloxane]-polyethylene blend was easily spun inyo fine filaments and drawn 10 times or higher in an oven at 150 ゜C, eliminating decaline from the filament. Unfortunately poor conductivities were obtained for the alumina filament prepared from the blend of this combination. The use of poly(acrylo nitrile), a precursor polymer for the commercial carbon fibers, as the co-component was much effective and gave an excellent coductivities, 2x10^1 to 4x10^1 S cm^<-1>.