Influence of Twin-Screw Extrusion on The Dispersion of Nanoclay in Vinylester Composites

Autor:	Radha H R, A Hareesh, Bommanna K, Yuvaraja Naik, Mahendra K
Rok vydání:	2021
Předmět:	Materials science Nanocomposite XRD Scanning electron microscope Sonication Twin-Screw Extrusion Izod impact strength test Dispersion Flexural strength SEM Ultimate tensile strength Nanoclay Extrusion Composite material Dispersion (chemistry)
Zdroj:	American Journal of Agricultural Science, Engineering and Technology. 5:254-261
ISSN:	2158-8104 2164-0920
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c445683f0dc24e123e8db24e4e758c70 https://doi.org/10.54536/ajaset.v5i2.101 Zobrazit plný text záznamu