The influence of fibre surface treatment on the formation of an interphase in CFRP

Autor: P. W. M. Peters, H. Albertsen
Rok vydání: 1993
Předmět:
Zdroj: Journal of Materials Science. 28:1059-1066
ISSN: 1573-4803
0022-2461
DOI: 10.1007/bf00400893
Popis: In the scheme of a EURAM programme the influence of a wet oxidative surface treatment on the formation of an interphase, on the fibre-matrix bond strength and on the mechanical properties is investigated. The fibre CG 43–750 was supplied by Courtaulds treated to four different surface treatment levels (designated STL=0% or untreated, 10, 50 and 100%) sized (1% by weight) and impregnated with the resin HG 9106. This resin consists of di-, tri- and tetrafunctional epoxies with the hardener 3.3 DDS and also contains polyethersulphone. During the cure this resin separates in a continuous (thermoset-rich) phase which completely covers the fibres and a discontinuous (thermoplastic-rich) phase with a roughly globular structure. From water uptake experiments and matrix (interphase) sensitive composite properties (shear modulus G 12, transverse modulus E 22) it was concluded that the activated carbon fibre surface gives rise to a more fully crosslinked interphase, resulting in a reduction of the modulus of this interphase.
Databáze: OpenAIRE
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