EP0307968A2
Expired / Lapsed
EP
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Process for producing high strength carbon-carbon composite
Assignee: Petoca Ltd
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Filing: 1988-09-22
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Granted: —
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Expires: 2008-09-22
Abstract
Abstract A process for producing a high density, high strength carbon-carbon composite which does not require high cost secondary reinforcement treatment. This process comprises impregnating an aggregate such as a bundle of a carbon fiber with a liquid dispersion of a carbonaceous material of specified size of a fine powder or a short fiber of carbonaceous material to form a reinforcement material of a carbon fiber having the fine powder or the short fiber of a carbonaceous material distributed on the surface as well as in the inside of said bundle of a carbon fiber, and impregnating said aggregate of a carbon fiber with one or more of liquid carbonaceous material selected from the group consisting of a phenolic resin, a furan resin and a pitch and carbonizing the impregnated bundle of a carbon fiber, and if necessary, graphitizing the carbonized product.
Inventors
- 👤 Minoru Kashima Seiyusho Takabatake
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-26 17:16
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/71; C04B35/78; C04B35/80; C04B35/83
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
143 words
A process for producing a carbon-carbon composite which comprises impregnating an aggregate of a carbon fiber with a liquid dispersion of a carbonaceous material selected from the group consisting of (i) a carbonaceous fine powder material having an average particle diameter of 12 - 0.07 micron and (ii) a carbonaceous short fiber cut or ground to a fiber length not longer than 2 mm, to form a reinforcement material of a carbon fiber having the fine powder or the short fiber of the carbonaceous material distributed substantially on the surface and in the inside of said aggregate of a carbon fiber, impregnating said reinforcement material of a carbon fiber with one or more of liquid carbonizable material selected from the group consisting of a thermosetting phenolic resin and furan resin, and a pitch, and carbonizing the impregnated reinforcement material of a carbon fiber.
Claim 2
Dependent Claim
143 words
A process for producing a carbon-carbon composite which comprises impregnating an aggregate of a carbon fiber with a liquid dispersion of a carbonaceous material selected from the group consisting of (i) a carbonaceous fine powder material having an average particle diameter of 12 - 0.07 micron and (ii) a carbonaceous short fiber cut or ground to a fiber length not longer than 2 mm, to form a reinforcement material of a carbon fiber having the fine powder or the short fiber of the carbonaceous material distributed substantially on the surface and in the inside of said aggregate of a carbon fiber, impregnating said reinforcement material of a carbon fiber with one or more of liquid carbonizable material selected from the group consisting of a thermosetting phenolic resin and furan resin, and a pitch, and carbonizing the impregnated reinforcement material of a carbon fiber.
Claim 3
Dependent Claim
156 words
A process for producing a carbon-carbon composite which comprises impregnating an aggregate of a carbon fiber with a liquid dispersion of a carbonaceous material selected from the group consisting of (i) fine powder of a carbonaceous material having an average particle diameter of 12 - 0.07 micron and (ii) a carbonaceous short fiber cut or ground to a fiber length not longer than 2 mm to form a reinforcement material of a carbon fiber having the fine powder or the short fiber of the carbonaceous material distributed substantially on the surface as well as in the inside of the said aggregate of a carbon fiber, impregnating said reinforcement material of a carbon fiber with one or more of liquid carbonizable material selected from the group consisting of a thermosetting phenolic resin and furan resin and a pitch, carbonizing the impregnated reinforcement material of a carbon fiber, and graphitizing the carbonized reinforcement material of a carbon fiber.
Claim 4
Dependent Claim
156 words
A process for producing a carbon-carbon composite which comprises impregnating an aggregate of a carbon fiber with a liquid dispersion of a carbonaceous material selected from the group consisting of (i) fine powder of a carbonaceous material having an average particle diameter of 12 - 0.07 micron and (ii) a carbonaceous short fiber cut or ground to a fiber length not longer than 2 mm to form a reinforcement material of a carbon fiber having the fine powder or the short fiber of the carbonaceous material distributed substantially on the surface as well as in the inside of the said aggregate of a carbon fiber, impregnating said reinforcement material of a carbon fiber with one or more of liquid carbonizable material selected from the group consisting of a thermosetting phenolic resin and furan resin and a pitch, carbonizing the impregnated reinforcement material of a carbon fiber, and graphitizing the carbonized reinforcement material of a carbon fiber.
Claim 5
Dependent Claim
20 words
A process according to the claim 1 or 2 in which the said fine powder of carbonaceous material is graphite.
Claim 6
Dependent Claim
21 words
A process according to the claim 1 or 2 in which the said fine powder of carbonaceous material is carbon powder.
Claim 7
Dependent Claim
30 words
A process according to the claim 1 or 2 in which the said fine powder of carbonaceous material is carbon black. said fine powder of carbonaceous material is carbon black.
Claim 8
Dependent Claim
25 words
A process according to the claim 1 or 2 in which the said short fiber is a pitch fiber having been subjected to infusiblization treatment.
Claim 9
Dependent Claim
27 words
A process according to the claim 1 or 2 in which said short fiber is a pitch-based carbon fiber carbonized at a temperature not higher than 2200°C.
Claim 10
Dependent Claim
18 words
A process according to the claim 1 or 2 in which carbonization is carried out under pressurized state.
Claim 11
Dependent Claim
15 words
A process according to claim 1 or 2 in which said aggregate is a bundle.
Claim 12
Dependent Claim
46 words
A process for producing a carbon-carbon composite which comprises impregnating an aggregate of a carbon fiber with a liquid dispersion of a carbonaceous material selected from the group consisting of (i) carbonaceous fine powder material having an average particle diameter of 12 - 0.07 micron and
Claim 13
Dependent Claim
46 words
A process for producing a carbon-carbon composite which comprises impregnating an aggregate of a carbon fiber with a liquid dispersion of a carbonaceous material selected from the group consisting of (i) carbonaceous fine powder material having an average particle diameter of 12 - 0.07 micron and
Claim 14
Dependent Claim
79 words
(ii) a carbonaceous short fiber cut or ground to a fiber length not longer than 2 mm, to form a reinforcement material of a carbon fiber having fine powder or short fiber of carbonaceous material distributed substantially on the surface and in the inside of said aggregate of a carbon fiber, impregnating said reinforcement material of a carbon fiber with a pitch, and carbonizing the impregnated reinforcement material of a carbon fiber under inert atmosphere at substantially atmospheric pressure.
Claim 15
Dependent Claim
79 words
(ii) a carbonaceous short fiber cut or ground to a fiber length not longer than 2 mm, to form a reinforcement material of a carbon fiber having fine powder or short fiber of carbonaceous material distributed substantially on the surface and in the inside of said aggregate of a carbon fiber, impregnating said reinforcement material of a carbon fiber with a pitch, and carbonizing the impregnated reinforcement material of a carbon fiber under inert atmosphere at substantially atmospheric pressure.
Claim 16
Dependent Claim
130 words
A process for producing a carbon-carbon composite which comprises impregnating a aggregate of a carbon fiber with a liquid dispersion of a carbonaceous material selected from the group consisting of (i) carbonaceous fine powder material having an average particle diameter of 12 - 0.07 micron and (ii) a carbonaceous short fiber cut or ground to a fiber length not longer than 2 mm, to form a reinforcement material of a carbon fiber having fine powder or short fiber of carbonaceous material distributed substantially on the surface and in the inside of said aggregate of a carbon fiber, impregnating said reinforcement material of a carbon fiber with a pitch, and carbonizing the impregnated reinforcement material of a carbon fiber under inert atmosphere at substantially atmospheric pressure, and graphitizing the carbonized product.
Claim 17
Dependent Claim
130 words
A process for producing a carbon-carbon composite which comprises impregnating a aggregate of a carbon fiber with a liquid dispersion of a carbonaceous material selected from the group consisting of (i) carbonaceous fine powder material having an average particle diameter of 12 - 0.07 micron and (ii) a carbonaceous short fiber cut or ground to a fiber length not longer than 2 mm, to form a reinforcement material of a carbon fiber having fine powder or short fiber of carbonaceous material distributed substantially on the surface and in the inside of said aggregate of a carbon fiber, impregnating said reinforcement material of a carbon fiber with a pitch, and carbonizing the impregnated reinforcement material of a carbon fiber under inert atmosphere at substantially atmospheric pressure, and graphitizing the carbonized product.
Claim 18
Dependent Claim
18 words
A process according to claim 10 or 11, in wh.ich said fine powder of carbonaceous material is graphite.
Claim 19
Dependent Claim
21 words
A process according to the claim 10 or 11 in which the said fine powder of carbonaceous material is carbon powder.
Claim 20
Dependent Claim
20 words
A process according to the claim 10 or 11 in which said fine powder of carbonaceous material is carbon black.
Claim 21
Dependent Claim
24 words
A process according to the claim 10 or 11 in which said short fiber is a pitch fiber having been subjected to infusiblization treatment.
Claim 22
Dependent Claim
27 words
A process according to the claim 10 or 11 in which said short fiber is a pitch-based carbon fiber carbonized at a temperature not higher than 2200°C.
Claim 23
Dependent Claim
15 words
A process according to claim 10 or 11 in which said aggregate is a bundle.
Claim 24
Dependent Claim
137 words
A carbon-carbon composite comprising a reinforcement material of a carbon fiber, a matrix of a carbonized material filling the interstices formed between said reinforcement carbon fiber and bonded to said reinforcement material, and a fine carbonaceous material selected from the group consisting of fine powder of a carbonaceous material of graphite, carbon or carbon black having an average particle diameter of 12 to 0.07 micron, and a car bonaceous short fiber of an infusiblized pitch fiber or a pitch based carbon fiber carbonized 2200 °C or lower, said carbonaceous short fiber being cut or ground to a fiber length of 2 mm or shorter, said fine carbonaceous material distributed substantially evenly on the surfaces of said reinforcement carbon fiber, said matrix being a carbonized material from a thermosetting phenolic resin or a furan resin or a pitch.
Claim 25
Dependent Claim
137 words
A carbon-carbon composite comprising a reinforcement material of a carbon fiber, a matrix of a carbonized material filling the interstices formed between said reinforcement carbon fiber and bonded to said reinforcement material, and a fine carbonaceous material selected from the group consisting of fine powder of a carbonaceous material of graphite, carbon or carbon black having an average particle diameter of 12 to 0.07 micron, and a car bonaceous short fiber of an infusiblized pitch fiber or a pitch based carbon fiber carbonized 2200 °C or lower, said carbonaceous short fiber being cut or ground to a fiber length of 2 mm or shorter, said fine carbonaceous material distributed substantially evenly on the surfaces of said reinforcement carbon fiber, said matrix being a carbonized material from a thermosetting phenolic resin or a furan resin or a pitch.
References Cited (Backward Citations)
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