Carbon fiber composites morphology

Saktoun EM, Boudet A, Chabert B, Hilaire B, Bouvart D, Morphology in PEEK carbon-fiber composites observed in transmission electron-microscopy. Polymer, 434(12), 2668-2669, 1993. 

Caramaro L, Chabert B, Chauchard J, Vukhanh T, Morphology and mechanical performance of polyphenylenesulfide carbon-fiber composite, Polym Eng Sci, 31(17), 1279-1285, 1991. 

Two different polyacrylonitrile precursor carbon fibers, an A fiber of low tensile modulus and an HM fiber of intermediate tensile modulus were characterized both as to their surface chemical and morphological composition as well as to their behavior in an epoxy matrix under interfacial shear loading conditions. The fiber surfaces were in two conditions. Untreated fibers were used as they were obtained from the reactors and surface treated fibers had a surface oxidative treatment applied to them. Quantitative differences in surface chemistry as well as interfacial shear strength were measur-ed. 

When TP-modified thermosets are used as matrix for composites, the resulting morphologies can be strongly affected by the presence of glass or carbon fibers (Varley and Hodgkin, 1997). 

This chapter describes the preparation and examination of ceramic matrix composites realized by the addition of different carbon polymorphs (carbon black nanograins, graphite micrograins, carbon fibers and carbon nanotubes) to silicon nitride matrices. In the following sections, structural, morphological and mechanical characteristics of carbon-containing silicon nitride ceramics are presented. 

In this entry, the effect of blending recyclable poly-(propylene) (PP) and poly(ethylene terephthalate) (PET) with lignin on carbon fiber production is presented. We discuss the effects of lignin structure and specific intermolecular interactions on lignin thermal properties as well as the effect of blend composition on surface morphology, mechanical properties, and the manufacturing process of lignin/recyclable plastic-based carbon fibers. 

The SAXS of IM7 carbon fiber-reinforced I.30E (6% wt xy)/Epon 862/W composite is shown in Figure 5. The SAXS data show that the layered silicates are preferentially oriented in die conqiosite parallel to the carbon fiber axis. It is more likely t diis orientation is induced by die resin flow around the fibers during infusion, leadii to shear alignment of the silicate sheets. Interaction between the IM7 carbon fiber and layered silicate could include Van der Waals and/or acid-base interactions. The morphology and interaction should be inqiortant factors to the properties of the advanced conqiosite. 

Carbon fiber reinforced PEEK has been extensively investigated and the examination of the interface morphology, ranked as most important [119-128]. The ductihty at the interface in a carbon fiber/PEEK composite is shown in Figure 13.9. Injection molding compounds of carbon fiber reinforced PAEK were studied [129] and the utilization of high volume fractions of carbon fiber in PEEK has been used to raise the mechanical properties [130]. Lee [131] has reported tensile properties of this composite system. The compressive strengths of cross-plied carbon fiber/PEEK composites are recorded [132]. Help is provided for filament winding thick sections of PEEK cfrp [133]. 

Crystallization and morphology [156-158] have been considered. With materials processed at high temperatures, the type of size used on the carbon fiber is important [159] and the effect of physical aging on the toughness of PES composites [160] has been determined. 

Kim YS, Kim SC, Toughening of carbon fiber/thermoset composite by the morphology spectrum concept. Polymer Composites, 19(6), 714-723, 1998. 

Saiello S, Kenny J, Nicolais L, Interface morphology of carbon-fiber PEEK composites, J Mater Sci, 25(8), 3493-3496, 1990. 

Lustiger A, Morphological aspects of the interface in the PEEK-carbon fiber system. Polymer Composites, 13(5), 408-412, 1992. 

Jar PY, Cantwell WJ, Kausch HH, Study of the crystal morphology and the deformation-behaviour of carbon-fiber reinforced PEEK (APC-2), Composites Sci Technol, 43(3), 299-306, 1992. 

Yun N G, Won Y G and Kim S C (2004) Toughening of carbon fiber/epoxy composite by inserting polysulfone film to form morphology spectrum, Polymer 45 6953-6958. 

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