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A preliminary evaluation of bio-based epoxy resin hardeners for maritime application

A preliminary evaluation of bio-based epoxy resin hardeners for maritime application
A preliminary evaluation of bio-based epoxy resin hardeners for maritime application
A screening of different hardeners derived from cashew nut shell liquid (CNSL) was performed; they were compared to a conventional hardener in an epoxy resin system for composite production by infusion process. All samples were submitted to different post-curing processes before tensile strength and moisture uptake were evaluated. It was observed that the use of CNSL hardeners produced cured epoxies similar in Young’s Modulus (YM) to the conventional hardener with a lower moisture uptake however, the hardeners resulting in a low YM had a marked reduction in moisture uptake. Studies of the post-curing process showed that the moisture uptake of the conventional system can be improved but, depending on the temperature applied, the process can be detrimental to the CNSL hardeners, provided that moisture uptake was increased after post-curing. The results indicate that biobased content can be introduced to a conventional epoxy resin system by replacing the conventional hardener commonly used by a sustainable one derived from cashew nut shell liquid with an additional moisture uptake reduction.
epoxy resin, phenalkamine, phenalkamide, cashew nut shell liquid
186
Benega, Marcos, Antonio Gimenes
cc8b51e0-e147-4a41-9ba8-39fd13ed07fa
Raja, Robert
74faf442-38a6-4ac1-84f9-b3c039cb392b
Blake, James
6afa420d-0936-4acc-861b-36885406c891
Benega, Marcos, Antonio Gimenes
cc8b51e0-e147-4a41-9ba8-39fd13ed07fa
Raja, Robert
74faf442-38a6-4ac1-84f9-b3c039cb392b
Blake, James
6afa420d-0936-4acc-861b-36885406c891

Benega, Marcos, Antonio Gimenes, Raja, Robert and Blake, James (2017) A preliminary evaluation of bio-based epoxy resin hardeners for maritime application. Procedia Engineering, 200, 186. (doi:10.1016/j.proeng.2017.07.027).

Record type: Article

Abstract

A screening of different hardeners derived from cashew nut shell liquid (CNSL) was performed; they were compared to a conventional hardener in an epoxy resin system for composite production by infusion process. All samples were submitted to different post-curing processes before tensile strength and moisture uptake were evaluated. It was observed that the use of CNSL hardeners produced cured epoxies similar in Young’s Modulus (YM) to the conventional hardener with a lower moisture uptake however, the hardeners resulting in a low YM had a marked reduction in moisture uptake. Studies of the post-curing process showed that the moisture uptake of the conventional system can be improved but, depending on the temperature applied, the process can be detrimental to the CNSL hardeners, provided that moisture uptake was increased after post-curing. The results indicate that biobased content can be introduced to a conventional epoxy resin system by replacing the conventional hardener commonly used by a sustainable one derived from cashew nut shell liquid with an additional moisture uptake reduction.

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Accepted/In Press date: 7 February 2017
Published date: 10 October 2017
Keywords: epoxy resin, phenalkamine, phenalkamide, cashew nut shell liquid

Identifiers

Local EPrints ID: 414909
URI: https://eprints.soton.ac.uk/id/eprint/414909
PURE UUID: 22828f2c-a508-452e-aad4-4dc7686997be
ORCID for Marcos, Antonio Gimenes Benega: ORCID iD orcid.org/0000-0003-4954-7384
ORCID for Robert Raja: ORCID iD orcid.org/0000-0002-4161-7053

Catalogue record

Date deposited: 16 Oct 2017 16:30
Last modified: 19 Jul 2019 17:55

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