Carbon fiber interface

The oxidation product in DCE, CQ, has a charge, and hence it may be liable to transfer to W. The transfer of CQ at the W/DCE interface was investigated by current-scan polarography. Here, CQ in DCE had been prepared by reducing CQ in DCE at a column electrode with carbon fiber working electrode [40]. The polarogram (curve 2 in Fig. 8) indicates that CQ transfers from DCE to W in the potential range more positive than -0.7 V. 

An FRP pipeline typically consists of (1) an inner nonpermeable barrier tube that transports the pressurized gas, (2) a protective layer over the barrier tube, (3) an interface layer over the protective layer, (4) multiple glass or carbon-fiber composite layers, (5) an outer pressure barrier layer, and (6) an outer protective layer. Each of the layers provides a distinct function and the interaction between the layers produces a pipe with exceptional performance. 

Baillie, C.A., Castle, J.E., Watts, J.F. and Bader, M.G. (1991). Chemical aspects of interface adhesion between electrolytically oxidised carbon fibers and epoxy resins. In Proc. ICCMI8, Composites Design, Manufacture and Application. (S.W. Tsai and G.S. Springer, eds.), SAMPE Pub. Paper HE. 

Buxton, A and Baillie, C.A. (1995), Predicting the behavior of the carbon-fiber/epoxy interface under different service conditions. Composite Interfaces 3, 411-423. 

Cazeneuve, C., Castle, J.E. and Watts, J.F. (1990), The structure of the interface in carbon fiber composites by scanning Auger microscopy. J. Mater. Sci, 25, 1902-1908. 

Denison, P., Jones, F.R., Brown, A., Humphrey, P. and Harvey, J. (1988a), Scanning secondary ion mass spectroscopy studies of the micromechanics and chemical structure in the region of the interface in carbon fiber-epoxy composites. J. Mater. Sci. 23, 2153-2156. 

Fig. 3.8. Plots of interface bond strength, Tt, versus embedded fiber length, L. (a) for a carbon fiber-epoxy matrix system and (b) for a Hercules IM6 carbon fiber-acrylic matrix system. After Pilkethly and Doble (1990) and Desarmont and Favre (1991).

Fig. 3.15. Interface shear strength. Xb, of (a) untreated and (b) treated LXA500 carbon fiber-epoxy matrix system measured at 10 different laboratories and using different testing methods. (O) fiber pull-out test ( ) microdebond lest ( ) fiber push-out lest (A) fiber fragmentation test. After Pitkelhly el al. (1993).

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