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November 13-15, 2017 | Las Vegas, USA
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RRJOMS | Volume 5 | Issue 7 | November, 2017
Influence of boehmite nanoparticle on the curing kinetics and rheology of an epoxy matrix for liquid
composite molding process
Dilmurat Abliz, Tatjana Artys
and
Gerhard Ziegmann
Clausthal University of Technology, Germany
M
odifying the resin matrix with nano-scale additives is especially attractive in the liquid composite molding (LCM) processes
in order to increase the matrix performance, by effectively reducing the shrinkage and improving the mechanical properties
without compromising the flow and impregnation behavior of the matrix. Main target of this paper is to characterize and model
curing kinetics and rheological behavior of the boehmite (AlOOH) nanoparticle-modified epoxy matrix, regarding to the application
in LCM processes for fabrication of fiber-reinforced plastics (FRP), which are not yet covered in the literature. Based on the curing
behavior and rheological characteristics, the curing kinetics and rheology of the boehmite nanoparticle-filled epoxy matrix is
modelled by Kamal-Sourour and Castro-Macosko models, separately. Based on the cure kinetics, the boehmite nanoparticles showed
an accelerating effect on the reaction up to a cure degree of about 0.82. However, then the Tg of the reference system becomes
higher than that particle-filled suspensions, indicating an inhibiting effect of the nanoparticle on the cure and negative effect on
Tg. The final Tg value showed a reverse trend with the particle content: the higher the particle concentration, the lower the final
Tg, indicating a decreased network stability of the particle filled suspension compared to that by the reference system. According
to the rheological investigations, the effective processing time is inevitably decreased by about 28 % at 10 wt% and 40 % at 15 wt%
boehmite concentration. The effects of the nanoparticles on the curing kinetics and rheology of the matrix exert extra requirements
and restrictions on the processing strategies and parameters considering the decreased impregnation length for the fabrication of
FRP structures.
Biography
Dilmurat Abliz is a PhD student in the Clausthal University of Technology and working as a scientific assistant since 2012 in the Institute of Polymer Materials and Plastics
Engineering, TU Clausthal. His main research focus lies in the material, process and property characterization and modelling/simulation regarding nanoparticle-modified
epoxy matrix for application in high-performance fiber-composites. This work originates from the Research Group Program FOR 2021“Acting Principles of Nano-Scaled
Matrix Additives for Composite Structures” funded by the German Research Foundation (DFG: ZI 648/42-1; ZI 648/43-1).
dilmurat.abliz@tu-clausthal.deDilmurat Abliz et al., Res. Rev. J Mat. Sci. 2017, 5:7
DOI: 10.4172/2321-6212-C1-011