EP0104639A2
Expired / Lapsed
EP
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Process for improving carbon fibers
Assignee: BP Corp North America Inc
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Filing: 1983-09-26
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Granted: —
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Expires: 2003-09-26
Abstract
Abstract A process for producing a carbon fiber having very high Young's modulus includes a post heat treatment for a carbon fiber wound onto a bobbin.
Inventors
- 👤 David Arthur Schulz
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 18:20
CPC Classifications
D; D01; D01F; D01F9/00; D01F9/08; D01F9/12; D01F9/14; D01F9/145; D01F9/20; D01F9/21; D01F9/22
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
54 words
A process for an improved carbon fiber, comprising the steps of winding a carbon fiber onto a bobbin which is thermally and mechanically stable at temperatures greater than 2000°C and which is chemically compatible with the carbon fiber, and thereafter, subjecting the carbon fiber to a heat treatment at a temperature greater than 2000°C.
Claim 2
Dependent Claim
54 words
A process for an improved carbon fiber, comprising the steps of winding a carbon fiber onto a bobbin which is thermally and mechanically stable at temperatures greater than 2000°C and which is chemically compatible with the carbon fiber, and thereafter, subjecting the carbon fiber to a heat treatment at a temperature greater than 2000°C.
Claim 3
Dependent Claim
26 words
The process of Claim 1, wherein the heat treatment is carried out by raising the temperature at a rate from about 200°C to 500°C per hour.
Claim 4
Dependent Claim
26 words
The process of Claim 1, wherein the heat treatment is carried out by raising the temperature at a rate from about 50°C to 100°C per hour.
Claim 5
Dependent Claim
20 words
The process of Claim 1, wherein the heat treatment is carried out by raising the temperature to more than 2700°C.
Claim 6
Dependent Claim
26 words
The process of Claim 1, wherein the heat treatment is carried out so that the carbon fiber has a Young's modulus greater than about - 100'Mspi.
Claim 7
Dependent Claim
26 words
The process of Claim 1, wherein the heat treatment is carried out so that the carbon fiber has a Young's modulus greater than about 90 Mpsi.
Claim 8
Dependent Claim
26 words
The process of Claim 1, wherein the heat treatment is carried out so that the carbon fiber has a Young's modulus greater than about .75 Mpsi.
References Cited (Backward Citations)
No citation records indexed.
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