Effect of MWNTs and SiC-Coated MWNTs on Properties of PEEKLCP Blend

Abstract EN

Multiwall carbon nanotubes (MWNTs) were modified with polycarbosilane-derived silicon carbide (SiC) to improve its dispersion in the polymer matrix.

PEEK/LCP/MWNTs nanocomposites were prepared by melt blending.

TEM images show the improved dispersion of SiC-coated MWNTs against agglomerated structure of pure MWNTs in the blend.

FESEM images shows better fibrillation of LCP in presence of SiC-coated MWNTs.

TGA reveals that nanocomposites with SiC-coated MWNTs shows higher thermal stability than MWNTs filled blend system.

Based on enhanced dispersion, storage modulus, tensile modulus and tensile strength were increased drastically with the incorporation of SiC-coated MWNTs.

Glass transition temperature of the nanocomposites shows significant improvement with the incorporation of MWNTs.