TY - GEN
T1 - Surface treatment of tuff pitch-based carbon fiber for adhesion promotion in high Tg thermoplastic composites
AU - Deitzel, J. M.
AU - Kubota, M.
AU - Gillespie, J. W.
AU - Hinton, Z. R.
AU - Thursch, L.
AU - Alvarez, N.
AU - Palmese, G.
AU - Fallon, J. J.
AU - Bortner, M.
AU - Zhang, R.
AU - Joseph, R. M.
AU - Schumaker, T.
AU - Riffle, J.
AU - Lukubira, S.
AU - Kanhere, S.
AU - Tang, M. C.
AU - Ogale, A.
N1 - Publisher Copyright:
© 2019 Soc. for the Advancement of Material and Process Engineering. All rights reserved.
PY - 2019
Y1 - 2019
N2 - Commercially available Pitch and PAN based carbon fibers undergo surface treatment to clean the surface of undesirable scale and to provide chemical functionality to promote resin wetting and adhesion in composites. Typically, these surface treatments are carried out in a continuous process that does not lend itself to the treatment of discontinuous fibers, like the mesophase pitch-based fibers being developed for the Tailorable Universal Feedstock for Forming (TuFF) alignment process. To address this challenge, we have developed a multiple-step batch process that oxidizes the fiber surface through ozone treatment at elevated temperature, followed by vapor deposition and/or solution coating to apply a coating package. Using this process, a series of coating formulations have been evaluated for thermal stability, coating uniformity, thickness and chemical composition on mesophase pitch-based carbon fiber. Single Fiber Fragmentation (SFF) testing of model polyether imide (PEI)/carbon fiber composites shows that the interfacial shear strength (IFSS) of as-spun carbon fibers can be increased from ~10 MPa to ~40 MPa with the right choice of coating chemistry. A discussion of the processing steps, and evaluation of the different fiber surface treatments with SFF, Energy Dispersive X-ray spectroscopy (EDAX), and X-ray Photoelectron Spectroscopy (XPS) measurements, as well as the potential for process scale up will be presented.
AB - Commercially available Pitch and PAN based carbon fibers undergo surface treatment to clean the surface of undesirable scale and to provide chemical functionality to promote resin wetting and adhesion in composites. Typically, these surface treatments are carried out in a continuous process that does not lend itself to the treatment of discontinuous fibers, like the mesophase pitch-based fibers being developed for the Tailorable Universal Feedstock for Forming (TuFF) alignment process. To address this challenge, we have developed a multiple-step batch process that oxidizes the fiber surface through ozone treatment at elevated temperature, followed by vapor deposition and/or solution coating to apply a coating package. Using this process, a series of coating formulations have been evaluated for thermal stability, coating uniformity, thickness and chemical composition on mesophase pitch-based carbon fiber. Single Fiber Fragmentation (SFF) testing of model polyether imide (PEI)/carbon fiber composites shows that the interfacial shear strength (IFSS) of as-spun carbon fibers can be increased from ~10 MPa to ~40 MPa with the right choice of coating chemistry. A discussion of the processing steps, and evaluation of the different fiber surface treatments with SFF, Energy Dispersive X-ray spectroscopy (EDAX), and X-ray Photoelectron Spectroscopy (XPS) measurements, as well as the potential for process scale up will be presented.
UR - http://www.scopus.com/inward/record.url?scp=85068736170&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85068736170&partnerID=8YFLogxK
U2 - 10.33599/nasampe/s.19.1613
DO - 10.33599/nasampe/s.19.1613
M3 - Conference contribution
AN - SCOPUS:85068736170
T3 - International SAMPE Technical Conference
BT - SAMPE Conference and Exhibition
A2 - Ahlstrom, Kevin
A2 - Anderson, Jacob Preston
A2 - Beckwith, Scott
A2 - Becnel, Andrew Craig
A2 - Biermann, Paul Joseph
A2 - Buchholz, Matt
A2 - Cates, Elizabeth
A2 - Gardner, Brian
A2 - Harris, Jim
A2 - Knight, Michael J.
A2 - Reyes-Villanueva, German
A2 - Scarborough, Stephen E.
A2 - Sears, Phil
A2 - Thomas, James
A2 - Thostenson, Erik T.
PB - Soc. for the Advancement of Material and Process Engineering
T2 - SAMPE 2019 Conference and Exhibition
Y2 - 20 May 2019 through 23 May 2019
ER -