Influence of Twin-Screw Extrusion on The Dispersion of Nanoclay in Vinylester Composites
DOI:
https://doi.org/10.54536/ajaset.v5i2.101Keywords:
 Twin-Screw Extrusion,  Nanoclay,,  Dispersion,,  SEM,,  XRDAbstract
This paper reports the dispersion of nanoclay in vinylester using co-rotating twin screw extrusion and ultrasonication for preparing nanoclay/vinylester gel coat. Two sets MMT/vinylester specimens, namely Type 1 and Type 2 were prepared for comparative studies. While Type 1 specimens were prepared using ultrasonication only, Type 2 specimens were prepared using both ultrasonication and twin-screw extrusion. Type 2 specimens showed lower levels of nanoclay intercalation and higher levels of exfoliation. By using the MMT/vinylester gel coat so prepared by the two different routes, MMT/vinylester/glass specimens were fabricated and tested for mechanical properties. Type 2 based nanocomposite specimens showed greater values of ultimate tensile strength, flexural strength, interlaminar shear strength and impact strength. Scanning Electron Micrographs (SEM) of tensile fractured Type 2 based specimens showed less agglomeration of nanoclay than that of Type 1 based specimens.
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Copyright (c) 2021 Bommanna K, Radha H R, Yuvaraja Naik, Mahendra K V, A Hareesh
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
