Process for preparation of carbon fibers having structure...

Details Process for preparation of carbon fibers having structure... Process for preparation of carbon fibers having structure...

D - Textiles, Paper

01

F

18/506, 18/6

D01F 9/12 (2006.01) D01F 9/00 (2006.01) D01F 9/145 (2006.01)

Patent

CA 1173608

PROCESS FOR PREPARATION OF CARBON FIBERS HAVING STRUCTURE REFLECTED IN CROSS SECTIONAL VIEW THEREIN AS RANDOM MOSAIC ABSTRACT OF THE DISCLOSURE; A process is described for preparation of carbon fibers wherein pitch fibers are prepared from a mesophase-pitch containing not more than 80% by weight of a quinoline- insoluble component and showing, under a polarization microscope, more than 70 % of optically anisotropic region, comprising the steps of subjecting a mesophase-pitch having a viscosity of 10 to 100 poise at a spinning temperature of 330 to 450°C, to rotating-centrifugal-spinning in a rotating-centrifugal spinning machine with a nozzle periph- eral velocity of 300 to 1000 m/min and exposing the thus spun mesophase pitch fibers to a flow of a gas in the spinning direction at a temperature of 280 to 400°C and at a linear velocity of 50 to 200 m/sec, thereby prepar- ing pitch fibers showing a random mosaic cross sectional pattern. The pitch fibers are then converted to carbon fibers by infusibilization, carbonization and graphitization.

397804

Affiliated with

Also associated with

Rating

Process for preparation of carbon fibers having structure... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for preparation of carbon fibers having structure..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for preparation of carbon fibers having structure... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1305709