WOVEN AND KNITTED CLOTH CONSISTING OF SILICON-CARBON CONJUGATED FIBER AND PRODUCTION THEREOF

    公开(公告)号:JPH01229874A

    公开(公告)日:1989-09-13

    申请号:JP5023488

    申请日:1988-03-02

    Abstract: PURPOSE:To improve physical properties such as antioxidation and mechanical strength of woven cloth by forming a silicon and/or silicon carbide coating film layer on the surface of yarn of woven and knitted cloth consisting of carbon fiber. CONSTITUTION:Woven and knitted cloth consisting of carbon fiber is maintained in vapor of silicon and/or silicon carbide, then heat-treated at 1,300-2,600 deg.C and the carbon fiber yarn is silicified to give the aimed woven and knitted cloth. For example, first Si is piled on the surface of the carbon fiber yarn and reacted with the carbon fiber yarn by the successive heat treatment to form an interfacial layer consisting of SiC between Si and C (type I). Coating films of types II, III and IV are formed by heating condition, heat-treating condition and retention time thereof. Physical properties of the woven and knitted cloth consisting of the silicon-carbon conjugated fiber thus obtained are improved and the woven and knitted cloth is useful as a reinforcing base material of composite material obtained by combining the woven and knitted cloth with ceramic (glass, etc.), metal (aluminum, etc.), etc.

    METAL CHLORIDE-PERCHLORIC ACID-GRAPHITE MULTIPLE INTERCALATION COMPOUND AND ITS PRODUCTION

    公开(公告)号:JPH0388705A

    公开(公告)日:1991-04-15

    申请号:JP22624289

    申请日:1989-08-30

    Abstract: PURPOSE:To obtain the graphite multiple intercalation compd. having high conductivity in a short reaction time by allowing graphite to react with a metal chloride in a sealed tube and anodizing the obtained intercalation compd. in perchloric acid with the compd. as a working electrode and platinum as the counter electrode. CONSTITUTION:Graphite is allowed to react with a metal chloride in an evacuated sealed tube to form an (n)th-stage graphite intercalation compd. (n=2, 3). The compd. is then anodized in perchloric acid with the compd. as a working electrode and platinum as the counter electrode to intercalate the perchloric acid into the void between the graphite layers, and the desired graphite multiple intercalation compd. is obtained. The compd. is shown by the formula (x is 7-9 and y is 0.8-1.2 when z=1). The chlorides of transition metals such as iron chloride, aluminum chloride and bismuth chloride are used as the metal chloride. Bismuth chloride is most preferably used.

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