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公开(公告)号:JPH0388778A
公开(公告)日:1991-04-15
申请号:JP23175789
申请日:1989-09-08
Applicant: UBE INDUSTRIES
Inventor: YAMAMURA TAKETAMI , KUGIMOTO JUNICHI , ISHIKAWA TOSHIHIRO , SHIOJI YASUHIRO , SHIBUYA MASAKI
IPC: C04B35/80
Abstract: PURPOSE:To reduce the lowering of strength at high temp. and to improve the thermal shock resistance of the composite material by obtaining the inorg. fiber of the material from a silicon-contg. polycyclic aromatic polymer and specifying the composition. CONSTITUTION:The fiber is obtained from a silicon-contg. polycyclic aromatic polymer, and is the aggregate consisting of (a) a carbonaceous material derived from the mesophase polycyclic aromatic compd. constituting the polymer and exhibiting >=1 kinds of crystal arrangement among radial, onion, random, core- radial, skin-onion and mosaic structures, (b) non-oriented crystalline and/or amorphous carbon derived from an optically isotropic polycyclic aromatic compd. contg. an org. solvent-insoluble component constituting the polymer and (c) the amorphous phase consisting of Si, C and/or the crystalline superfine grains consisting of beta-Sic and having =1 kinds among the carbide, nitride, oxide and glass ceramic.
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公开(公告)号:JPH0284436A
公开(公告)日:1990-03-26
申请号:JP23357588
申请日:1988-09-20
Applicant: UBE INDUSTRIES
Inventor: YAMAMURA TAKETAMI , KUGIMOTO JUNICHI , ISHIKAWA TOSHIHIRO , SHIOJI YASUHIRO , SHIBUYA MASAKI
Abstract: PURPOSE:To obtain the subject polymer giving an inorganic fiber having excellent mechanical properties, etc., by infusibilization and baking by thermally reacting a polycyclic aromatic compound with a random copolymer containing an organic silicon polymer bonded to the aromatic ring of a polycyclic aromatic compound. CONSTITUTION:The objective polymer can be produced by heating (melting) (A) 100 pts.wt. of a random copolymer composed mainly of (i) an Si-CH2 bond unit and (ii) an Si-Si bond unit, having H, lower alkyl, phenyl or silyl on the side chain of Si atom, having a ratio (i/ii) of 1/(0-20), containing (iii) petroleum or coal-based pitch (or its heat-treated product) as (a part of) Si atom of the organic silicon polymer and bonded to C atom on the aromatic ring of a polycyclic aromatic compound derived from a pitch free from component insoluble in organic solvent and (B) 2-3,900 pts.wt. of a polycyclic aromatic compound composed of mesophase (and optically isotropic phase) obtained by the heat- treatment of petroleum or coal-based pitch. The heating temperature is 200-500 deg.C.
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公开(公告)号:JPS63265620A
公开(公告)日:1988-11-02
申请号:JP10127787
申请日:1987-04-24
Applicant: TOYOTA CENTRAL RES & DEV , UBE INDUSTRIES
Inventor: YAMADA SENICHI , TOWATA SHINICHI , IKUNO HAJIME , KAWAMURA TAKETAMI , ISHIKAWA TOSHIHIRO , SHIBUYA MASAKI
Abstract: PURPOSE:To improve mechanical characteristics, by reinforcing a matrix plastic with a bundle of continuous filaments on the surfaces of which fine particles and short fibers and/or whiskers are adhered or with a woven fabric made of the bundle of continuous filaments. CONSTITUTION:A bundle of continuous filaments made of continuous filaments whose constitutional components is at least one selected from a group consisting of ceramic, carbon and metal or a woven fabric made of a bundle of continuous filaments is immersed in a treating liquid wherein fine particles consisting of at least one selected from heat resistant substances such as ceramic, carbon, metal and so on and short fibers and/or whiskers are suspended. Fibers prepared by adhering fine particles and said short fibers and/or whiskers in the surface of each continuous filament are impregnated with a plastic and thereafter solidified.
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公开(公告)号:JPS62299568A
公开(公告)日:1987-12-26
申请号:JP13929786
申请日:1986-06-17
Applicant: UBE INDUSTRIES , TOYOTA CENTRAL RES & DEV
Inventor: YAMADA SENICHI , TOWATA SHINICHI , YAMAMURA TAKETAMI , ISHIKAWA TOSHIHIRO , SHIBUYA MASAKI
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公开(公告)号:JPS62297332A
公开(公告)日:1987-12-24
申请号:JP13929986
申请日:1986-06-17
Applicant: UBE INDUSTRIES , TOYOTA CENTRAL RES & DEV
Inventor: YAMADA SENICHI , TOWATA SHINICHI , YAMAMURA TAKETAMI , ISHIKAWA TOSHIHIRO , SHIBUYA MASAKI
Abstract: PURPOSE:The titled composite material of a controlling fiber volume ratio and having sufficient strength, by casting a plastic to a fibrous material consisting of a specific filament inorganic fiber and short fiber, whisker or powder of a heat-resistant substance, compressing and solidifying. CONSTITUTION:(B) 0.5-500% (volume ratio) based on a component A of short fiber, whisker or powder of a heat-resistant substance (silicon carbide, etc.) is attached to (A) filament inorganic fiber or a fabric thereof consisting of (i) an amorphous substance substantially comprising Si, M(M is Ti or Zr), carbon and oxygen or (ii) an aggregate substantially comprising a solid solution of beta-SiC, MC, beta-SiC and MC and/or crystalline ultrafine particles MC1-x(x is in 0
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公开(公告)号:JPS62297278A
公开(公告)日:1987-12-24
申请号:JP13929586
申请日:1986-06-17
Applicant: UBE INDUSTRIES , TOYOTA CENTRAL RES & DEV
Inventor: YAMADA SENICHI , TOWATA SHINICHI , YAMAMURA TAKETAMI , ISHIKAWA TOSHIHIRO , SHIBUYA MASAKI
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公开(公告)号:JPS62289614A
公开(公告)日:1987-12-16
申请号:JP12731286
申请日:1986-06-03
Applicant: UBE INDUSTRIES
Inventor: YAMAMURA TAKETAMI , ISHIKAWA TOSHIHIRO , SHIBUYA MASAKI
Abstract: PURPOSE:The titled fibers having an inner layer of a specific inorganic material containing silicon, titanium or zirconium, carbon and oxygen and a surface layer of a specific inorganic material containing silicon, titanium or zirconium and oxygen and having good wettability. CONSTITUTION:Inorganic fibers having an inner layer of (A) an amorphous material of Si, M (M is Ti or Zr), C and O or (B) beta-SiC, MC or a solid solution of the beta-SiC with MC and/or each crystalline ultrafine particles, expressed by the formula MC1-X (0
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公开(公告)号:JPS62289613A
公开(公告)日:1987-12-16
申请号:JP12731186
申请日:1986-06-03
Applicant: UBE INDUSTRIES
Inventor: YAMAMURA TAKETAMI , ISHIKAWA TOSHIHIRO , SHIBUYA MASAKI
IPC: D01F9/10
Abstract: PURPOSE:To provide an inorganic fiber emitting beautiful reflecting light by itself and composed of a core layer consisting of a specific inorganic substance containing silicon, carbon and oxygen and a skin layer consisting of a specific inorganic substance containing silicon and oxygen. CONSTITUTION:The core layer of the present fiber consists of (A) an amorphous substance composed of Si, C and O, (B) an aggregate of crystalline ultrafine particles of beta-SiC having particle diameter of
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公开(公告)号:JPS58152009A
公开(公告)日:1983-09-09
申请号:JP3525682
申请日:1982-03-08
Applicant: UBE INDUSTRIES
Inventor: NAGASAWA TOSHIO , ISHIKAWA TOSHIHIRO , FUKUZAKI KOUICHIROU
IPC: C08F2/00 , C08F2/04 , C08F8/00 , C08F8/46 , C08F255/00 , C08F255/02
Abstract: PURPOSE:Powdery polyolefin is dipped and dispersed in a specific organic solvent and made to react with a vinyl compound with a polar group under special conditions to produce easily in a short time the titled polyolefin showing high adhesion to the surface of metallic materials. CONSTITUTION:(A) Powdery polyolefin, preferably ethylene homo or copolymer of less than 250 micrometer particle sizes, is dipped and dispersed in (B) an organic solvent that boils at a temperature lower than the melting point under the pressure in the reaction system and does dissolve component A such as acetone. Then, (C) a vinyl compound bearing a polar group, preferably glycidyl acrylate and a radical polymerization initiator such as benzoyl peroxide are added to the above suspension to effect their reaction at a temperature lower than the melting point component A. Further, the temperature is kept to distil off the solvent B from the reaction system to produce the objective polyolefin.
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公开(公告)号:JP2002186812A
公开(公告)日:2002-07-02
申请号:JP2000387033
申请日:2000-12-20
Applicant: UBE INDUSTRIES
Inventor: SUZUKI MICHIYUKI , KUMAKAWA KIYOSHI , YAMAOKA HIROYUKI , SATO MITSUHIKO , ISHIKAWA TOSHIHIRO
IPC: B01D39/20
Abstract: PROBLEM TO BE SOLVED: To provide a high temperature dust collecting ceramic filter having durability over a long period of time (minimum one year) in a gas atmosphere of an electric power producing system (pressure fluidized bed composite electric power producing system: about 900 deg.C, 1-1.5 MPa, oxidizable gas; coal gasifying composite electric power producing system: about 500 deg.C, 2-3 MPa, reducible gas) and also having high heat shock properties and high reliability against backwashing gas. SOLUTION: The high temperature dust collecting ceramic filter is constituted of a composite material of oxide ceramics reinforced by silicon carbide type ceramics fibers.
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