Chemistry of inorganic compounds – Carbon or compound thereof – Elemental carbon
Patent
1993-06-25
1995-03-07
Lewis, Michael
Chemistry of inorganic compounds
Carbon or compound thereof
Elemental carbon
D01F 912
Patent
active
053956079
ABSTRACT:
The pitch based carbon fiber has a uniform crystal structure in which substantially all crystal fibriles constituting the fiber have the thickness ranging from 30 to 200% of the average thickness Lav. Uniform stress distribution over uniform crystal fibriles can be obtained. This permits suppresion of non-linearity of the compressive modulus of elasticity of carbon fiber to greatly improve the compressive strength thereof. Typically, a compressive strength of 100 to 170 kg/mm.sup.2 can be obtained with a tensile modulus of elasticity of 50 ton/mm.sup.2. Such carbon fiber can be obtained by securing uniformity of molecular weight distribution of the liquid crystal pitch and also uniformity of the orientation of the liquid crystal constituent molecules by the application of multi-stage high shear spinning.
REFERENCES:
patent: 4600572 (1986-07-01), Hiramatsu et al.
patent: 4775589 (1988-10-01), Hamada et al.
patent: 4898723 (1990-02-01), Suto et al.
Database WPIL, No. 93-131 575, Derwent Publications Ltd. and Japanese Publication No. 05-071 018 Mar. 1993.
Database WPIL, No. 92-354 244, Derwent Publications Ltd. and Japanese Publication No. 04-257 321. Sep. 1992.
Hino Takashi
Murakami Kazuyuki
Naito Tsutomu
Toshima Hiroshi
Hendrickson Stuart L.
Lewis Michael
Tonen Corporation
LandOfFree
High compressive strength pitch based carbon fiber does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with High compressive strength pitch based carbon fiber, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High compressive strength pitch based carbon fiber will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1404632