Method for producing carbon fiber bundle
AssigneesTeijin Limited, Wacker Chemie AG
InventorsHiroko Yokoyama, Eiji Kinoshita, Satoshi Ohno, Izuru Taketa
Life of this patent
Estimating the term…
Abstract
The present invention provides a method for producing a carbon fiber bundle, the method including steps (b) to (e) described below: (b) an oil agent application step of applying a silicone oil agent to a precursor fiber bundle to produce an oil-agent-attached precursor fiber bundle; (d) a stabilization step of subjecting the oil-agent-attached precursor fiber bundle to an oxidization treatment to produce an oxidized fiber bundle; and (e) a carbonization step of carbonizing the oxidized fiber bundle, wherein the silicone oil agent has a skin over time at 250° C. of less than 40 minutes.
Claims7
A method for producing a carbon fiber bundle, the method comprising steps (b), (d), and (e) described below:
- (b) an oil agent application step of applying a silicone oil agent to a precursor fiber bundle to produce an oil-agent-attached precursor fiber bundle;
- (d) a stabilization step of subjecting the oil-agent-attached precursor fiber bundle to an oxidization treatment to produce an oxidized fiber bundle;
- and
- (e) a carbonization step of carbonizing the oxidized fiber bundle, wherein
- the silicone oil agent has a skin over time at 250° C. of less than 40 minutes.
Dependencies are inferred from the claim text.