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    INORGANIC FIBER REINFORCED CERAMIC COMPOSITE MATERIAL
    23.
    发明专利
    INORGANIC FIBER REINFORCED CERAMIC COMPOSITE MATERIAL 失效

    公开(公告)号：JPH08157269A

    公开(公告)日：1996-06-18

    申请号：JP29968094

    申请日：1994-12-02

    Applicant: UBE INDUSTRIES

    Inventor： SHIBUYA MASAKI

    IPC: C04B35/80

    Abstract: PURPOSE: To suppress the deterioration of mechanical characteristics at the time of use at a high temp. in an oxygen contg. atmosphere by incorporating specified inorg. fibers and a ceramic matrix. CONSTITUTION: Commercially available silicon carbide fibers are heated at 1,200-1,500 deg.C in a CO atmosphere to obtain a reinforcing material made of inorg. fibers each consisting of an inner layer, a 1st surface layer part formed in the surface of the fiber and a 2nd surface layer part formed between the inner layer and the 1st surface layer part. The compsn. of the inner layer consists of 40-60wt.% Si, 20-40wt.% C and 0.1-3wt.% O. The C content of the 2nd surface layer part is higher than that of the inner layer by >=5wt.% and the total C content is =5wt.% and the total O content is >=60wt.%. The reinforcing material is blended with a ceramic matrix having 0.1μm to 1mm diameter and an aspect ratio of 1.5-1,000 and the resultant blend is heated at 800-1,500 deg.C in an inert gaseous atmosphere.

    PRODUCTION OF INORGANIC FILAMENT
    25.
    发明专利
    PRODUCTION OF INORGANIC FILAMENT 失效

    公开(公告)号：JPH07118932A

    公开(公告)日：1995-05-09

    申请号：JP26742493

    申请日：1993-10-26

    Applicant: UBE INDUSTRIES

    Inventor： YAMAOKA HIROYUKI ,  KUMAKAWA KIYOSHI ,  SHIBUYA MASAKI

    IPC: D01F9/10

    Abstract: PURPOSE:To provide a process for producing an inorganic filament composed of silicon, carbon, titanium or zirconium and oxygen and having a carbon-rich layer on the surface. CONSTITUTION:Polymetallocarbasilane is subjected to melt spinning and the obtained fiber is infusibilized. The treated fiber is baked in a kiln supplied with an inert gas whose flow direction in the kiln is same as that of the running of the fiber to obtain the inorganic filament.

    INORGANIC FILAMENT
    26.
    发明专利
    INORGANIC FILAMENT 失效

    公开(公告)号：JPH06146115A

    公开(公告)日：1994-05-27

    申请号：JP29697092

    申请日：1992-11-06

    Applicant: UBE INDUSTRIES

    Inventor： YAMAMURA TAKETAMI ,  SHIBUYA MASAKI ,  KAJII SHINJI

    IPC: C01B33/00 ,  C04B35/56 ,  D01F9/08 ,  D01F9/10

    Abstract: PURPOSE:To provide an inorganic filament composed of amorphous substance consisting of Si, C, Ti, etc., Cr, etc., and O, having specific element ratios and high mechanical strength, exhibiting excellent wettability to various matrices and having heat-resistance. CONSTITUTION:Xylene is added to a mixture of polycarbosilane, titanium tetrabutoxide and dioxobis (acetylacetonato) molybdenum and the components are made to react under thermal refluxing at 120 deg.C for 0.5hr in nitrogen gas stream. After removing xylene, the reactional product is polymerized at 350 deg.C for 1hr and the obtained organometallic polymer is spun by melt-spinning to obtain a fiber. The fiber is infusibilized by heating at 190 deg.C for 4hr and baked by raising the temperature to 1300 deg.C in nitrogen gas stream without applying tension to obtain the objective inorganic filament composed of an amorphous substance consisting of Si, C, M (M is Ti and/or Zr), M (M is Cr and/or Mo) and O and having element ratios of 40-60wt.% of Si, 20-40wt.% of C, 0.5-10wt.% of M , 0.1-5wt.% of M and 0.01-30wt.% of O.

    HYBRID YARN
    27.
    发明专利
    HYBRID YARN 失效

    公开(公告)号：JPH03234820A

    公开(公告)日：1991-10-18

    申请号：JP2527890

    申请日：1990-02-06

    Applicant: UBE INDUSTRIES

    Inventor： YAMAMURA TAKETAMI ,  KUGIMOTO JUNICHI ,  ISHIKAWA TOSHIHIRO ,  SHIOJI YASUHIRO ,  SHIBUYA MASAKI

    IPC: C04B35/52 ,  C01B31/02 ,  D01F9/10 ,  D01F9/14

    Abstract: PURPOSE:To obtain the title yarn suitable as a reinforcing material for composite material, by using a yarn obtained from a silicon-containing polycyclic aromatic polymer and/or a polycyclic aromatic polymer containing one of Ti, Zr and Hf and silicon as the one component. CONSTITUTION:The objective hybrid yarn contains, as the one component, a yarn [containing carbonaceous substance in a crystal orientation state from a mesophase state and a crystalline substance in an amorphous state changed from an optically isotropic state and/or amorphous carbon and an Si-C-O substance having Si:C:O of (30-70):(20-60):(0.5-10)] obtained from a silicon-containing polycyclic aromatic polymer and/or a yarn [containing carbonaceous substance in a crystal orientation state changed from a mesophase state and carbonaceous substance in amorphous state changed from an optically isotropic state and an Si-M-C-O substance having Si:M:C:O of (5-70):(0.5-45):(20-40):(0.01-30) and M is Ti, Zr or Hf]. Carbon fibers, glass fibers and boron fibers, etc., are used as the other component.

    HEAT-RESISTANT FIBER REINFORCED INORGANIC COMPOSITE MATERIAL
    28.
    发明专利
    HEAT-RESISTANT FIBER REINFORCED INORGANIC COMPOSITE MATERIAL 失效

    公开(公告)号：JPH03232776A

    公开(公告)日：1991-10-16

    申请号：JP2528090

    申请日：1990-02-06

    Applicant: UBE INDUSTRIES

    Inventor： YAMAMURA TAKETAMI ,  KUGIMOTO JUNICHI ,  ISHIKAWA TOSHIHIRO ,  SHIOJI YASUHIRO ,  SHIBUYA MASAKI

    IPC: C04B35/565 ,  C04B35/52 ,  C04B35/56 ,  C04B35/80 ,  C04B35/83

    Abstract: PURPOSE:To prevent occurrence of heat stress cracking and make it possible to exhibit excellent oxidation resistance by each using an inorganic fiber obtained from a silicon-containing cyclic aromatic polymer as a reinforcing material and a crystalline carbon led from a polycyclic aromatic compound kept in mesophase state as a matrix. CONSTITUTION:An inorganic fiber obtained from a silicon-containing polycyclic aromatic polymer is used as a reinforcing material and crystalline carbon, etc., led from a polycyclic aromatic compound kept in mesophase state and constituting the polymer is used as a matrix to provide the aimed heat resistant fiber reinforced inorganic composition. The inorganic fiber is an aggregate consisting of a carbonaceous substance led from a polycyclic aromatic compound kept in mesophase state and constituting a polymer in the component and amorphous phase composed of Si, C and O and/or crystalline ultrafine grains composed of beta-SiC having

    FIBER REINFORCED CARBONACEOUS COMPOSITE MATERIAL
    29.
    发明专利
    FIBER REINFORCED CARBONACEOUS COMPOSITE MATERIAL 失效

    公开(公告)号：JPH03109265A

    公开(公告)日：1991-05-09

    申请号：JP24498189

    申请日：1989-09-22

    Applicant: UBE INDUSTRIES

    Inventor： YAMAMURA TAKETAMI ,  KUGIMOTO JUNICHI ,  ISHIKAWA TOSHIHIRO ,  SHIOJI YASUHIRO ,  SHIBUYA MASAKI

    IPC: C04B35/52 ,  C04B35/80 ,  C04B35/83

    Abstract: PURPOSE:To provide the above composite material which is excellent in strength, elasticity, toughness, etc., by using the specific high-strength and high- modulus inorg. fibers obtd. from a silicon-contg. polycyclic arom. polymer as a reinforcing material and a specific carbonaceous inorg. material as a matrix. CONSTITUTION:The fiber reinforced carbonaceous composite material is produced by using the high-strength and high-modulus inorg. fibers obtd. from the silicon-contg. polycyclic arom. polymer as the reinforcing material and the carbonaceous inorg. material obtd. from the silicon-contg. polyclic arom. polymer as the matrix. The constituting components of the inorg. fibers are the crystalline carbon derived from a polycyclic arom. compd. of a mesophase state constituting the polymer, the carbon in a non-oriented state derived from an optically isotropic polycyclic arom. compd. contg. the components insoluble in org. solvents constituting the polymer, and amorphous materials, etc., contg. Si, C, O, etc. The constituting components of the inorg. material are the crystalline carbon derived from the polycyclic arom. compd. constituting the polymer, amorphous carbon, and amorphous materials contg. Si, C, and O, etc.

    FIBER-REINFORCED CARBON MATERIAL
    30.
    发明专利
    FIBER-REINFORCED CARBON MATERIAL 失效

    公开(公告)号：JPH03103359A

    公开(公告)日：1991-04-30

    申请号：JP23693289

    申请日：1989-09-14

    Applicant: UBE INDUSTRIES

    Inventor： YAMAMURA TAKETAMI ,  KUGIMOTO JUNICHI ,  ISHIKAWA TOSHIHIRO ,  SHIOJI YASUHIRO ,  SHIBUYA MASAKI

    IPC: C04B35/52 ,  C01B31/02 ,  C04B35/80 ,  C04B35/83

    Abstract: PURPOSE:To improve mechanical characteristics, corrosion resistance, heat resistance and oxidation resistance by blending a specified inorganic fiber as a reinforcing material with carbon as a matrix. CONSTITUTION:By induction from a silicon-containing polycyclic aromatic polymer, (D) a carbonaceous inorganic filament composed of (A) a carbonaceous material produced from a mesophase polycyclic aromatic compound and having one or more crystalline orientation states selected from radial structure, onion one, random one, etc., (B) a non-orientated crystalline carbonaceous material and/or an amorphous carbon derived from an optically isotropic polycyclic aromatic compound and (C) an Si-C-O material consisting of an aggregate between an amorphous phase containing Si, C and O and/or crystalline ultrafine particles of beta-SiC having

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