Open AccessThe effect of microstructure on the dynamic mechanical properties of carbon fiber and carbon nanotube reinforced multi-scale composites with a polyamide 6 matrix
Author(s) -
Roland Petrény,
László Mészáros
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/903/1/012021
Subject(s) - carbon nanotube , materials science , composite material , microstructure , differential scanning calorimetry , polyamide , interphase , mechanical properties of carbon nanotubes , nucleation , microfiber , carbon nanotube metal matrix composites , nanotube , chemistry , physics , organic chemistry , biology , genetics , thermodynamics
We investigated the microstructure and the related dynamic mechanical properties of carbon fiber and carbon nanotube (CNT) reinforced, polyamide 6 (PA6) matrix multi-scale composites. Differential scanning calorimetry (DSC) showed that in composites reinforced with only carbon nanotubes, the aggregated nanotubes have a moderate crystal nucleating effect. However, in the hybrids, the carbon fibers and the uniformly dispersed CNTs have a notable crystal nucleating effect. It means that a crystalline interphase is formed around both the carbon fibers and the carbon nanotubes. As the interphase has higher modulus than the bulk matrix, it has an additional reinforcing effect and transfers the load better to the microfibers. We confirmed this theory by dynamic mechanical analysis.