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Cycloaliphatic epoxy-based hybrid nanocomposites reinforced with POSS or nanosilica for improved environmental stability in low Earth orbit

Suliga, Agnieszka, Hamerton, Ian and Viquerat, Andrew (2017) Cycloaliphatic epoxy-based hybrid nanocomposites reinforced with POSS or nanosilica for improved environmental stability in low Earth orbit Composites Part B: Engineering.

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Abstract

The purpose of this study is to demonstrate the properties of novel nanocomposites, based on cycloaliphatic epoxy resin additionally reinforced with silicon-containing nanostructures (mono- or octa-functional POSS or nanosilica). The changes in properties are discussed for the varied combinations of cycloaliphatic epoxy with a curing agent (cycloaliphatic amine or anhydride) and the nanomodifier. The in uence of modification on thermal stability, curing behaviour, morphology, surface chemistry, and topography were studied with TGA, DSC, ATR-FTIR, XPS and LCM. The results show that when POSS and/or nanosilica are incorporated to the cycloaliphatic matrix they in uence curing behaviour and glass transition temperatures (Tg), where mono-POSS increases Tg and octa-POSS decreases it with respect to nanosilica. Mono-POSS produces silicon-rich surfaces but tends to agglomerate and increase surface roughness. Octa-POSS and nanosilica penetrate the polymer matrix more deeply and disperse more easily. From the selected modifiers, octa-POSS shows the highest thermal stability.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Mechanical Engineering Sciences
Authors :
NameEmailORCID
Suliga, Agnieszkaa.suliga@surrey.ac.ukUNSPECIFIED
Hamerton, IanI.Hamerton@surrey.ac.ukUNSPECIFIED
Viquerat, Andrewa.viquerat@surrey.ac.ukUNSPECIFIED
Date : 2017
Copyright Disclaimer : © 2017 Elsevier Ltd. All rights reserved.
Uncontrolled Keywords : Cycloaliphatic epoxy; Nanosilica; Polymer matrix composites; POSS; Environmental stability
Depositing User : Clive Harris
Date Deposited : 08 Nov 2017 12:26
Last Modified : 08 Nov 2017 12:26
URI: http://epubs.surrey.ac.uk/id/eprint/844860

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