Stiffness carbon/polyimide

While the overall growth of composites in the aerospace industry is continuing, epoxy has been facing stiff competition from other materials and the growth rate has been relatively small (2% annually). While epoxies are still used in many exterior aircraft parts, carbon fiber composites based on bismaleimide and cyanate esters have shown better temperature and moisture resistance than epoxies in military aircaft applications. In the commercial aircraft arena, phenolic composites are now preferred for interior applications because of their lower heat release and smoke generation properties during fires. High performance thermoplastics, such as polysulfone, polyimides, and polyetherether ketone (PEEK), have also foimd some uses in aerospace composites. 

Gintert MJ, Jana SC et al (2007) A novel strategy for nanoday exfoliation in thermoset polyimide nanocomposite systems. Polymer 48 4166 Gojny FH, Nastalczyk J et al (2003) Surfaa modified multi-walled carbon nanotubes in CNT/epoxy-composites. Chem Phys Lett 370 820 Gojny FH, Wichmann MHG et al (2004) Carbon nanotube-reinforced epoxy-composites enhanced stiffness and fracture toughness at low nanotube content. Composites Sci Tech 64 2363 Gojny FH, Wichmann MHG et al (2006) Evaluation and identification of electrical and thermal conduction mechanisms in carbon nanotube/epoxy composites. Polymer 47 2036... 

These stiff polymeric materials, used mainly for commercial carbon dioxide removal applications (polyimides, cellulose acetate, polysulfones) have their selectivity mainly based on molecular sieving effects. Despite their affinity for polar compounds (those membranes are also recommended by membrane... 

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