Innovative Approach For Production Of Epoxy Syntactic Foams Consisting Of Epoxy Hollow

Epoxy spheres were fabricated via coating technique which utilized series of epoxy/curing agent mixture onto expanded polystyrene beads (EPS) formulated at ratio of 1:0.5 (epoxy rich), 1: 1(equivalent ratio) and 1:2 (amine rich) and their characteristic were investigated in term of differential scan...

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Main Author:	Mutalib, Nor Azaniza Abdul
Format:	Thesis
Language:	English
Published:	2015
Subjects:	T Technology
Online Access:	http://eprints.usm.my/46912/1/Innovative%20Approach%20For%20Production%20Of%20Epoxy%20Syntactic%20Foams%20Consisting%20Of%20Epoxy%20Hollow.pdf
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spelling	my-usm-ep.469122021-11-17T03:42:19Z Innovative Approach For Production Of Epoxy Syntactic Foams Consisting Of Epoxy Hollow 2015-10-01 Mutalib, Nor Azaniza Abdul T Technology TA401-492 Materials of engineering and construction. Mechanics of materials Epoxy spheres were fabricated via coating technique which utilized series of epoxy/curing agent mixture onto expanded polystyrene beads (EPS) formulated at ratio of 1:0.5 (epoxy rich), 1: 1(equivalent ratio) and 1:2 (amine rich) and their characteristic were investigated in term of differential scanning calorimeter (DSC), appearance and compressive behaviour. The results showed that EHS produced using epoxy/curing agent ratio of 1:1, exhibited smooth coating surface and yielded strong shell structure reflected from analysis of curing characteristic using DSC technique. An innovative approach involving vacuum assisted technique for preparation of syntactic foam made of epoxy hollow spheres and epoxy resin was introduced to be compared with syntactic foam produced through conventional technique; mold-casting technique. In this study, the resultant specimen was characterized for density and compression properties. Effect of different processing techniques on specimen was analysed through stress-strain curve and failure pattern of the syntactic foam filled EHS with the same EHS size. The vacuum assisted technique has successfully reduced voids within the matrix that was produced due to the processing technique and subsequently resulted in higher compressive strength and modulus. Specimen produced by the vacuum assisted technique was further investigated by varying several aspects in terms of cell sizes (BASF 403, BASF 303 and B-Normal) and internal structure of EHS (supported and unsupported). The effect of compression test orientation on the specimen failure pattern was also examined to assist in explaining in stress-strain curve difference. Under compressive loading, the failure initiated when stress concentrated on the weakest epoxy spheres slowly propagated through adjacent spheres and displayed wider horizontal plateau. When almost all sphere have been successfully collapsed, there was a drastic increase in stress on the stress-strain curve and this indicated that failure mechanism occurred via uniform densification throughout the specimen. 2015-10 Thesis http://eprints.usm.my/46912/ http://eprints.usm.my/46912/1/Innovative%20Approach%20For%20Production%20Of%20Epoxy%20Syntactic%20Foams%20Consisting%20Of%20Epoxy%20Hollow.pdf application/pdf en public masters Universiti Sains Malaysia Pusat Pengajian Kejuruteraan Bahan & Sumber Mineral
institution	Universiti Sains Malaysia
collection	USM Institutional Repository
language	English
topic	T Technology T Technology
spellingShingle	T Technology T Technology Mutalib, Nor Azaniza Abdul Innovative Approach For Production Of Epoxy Syntactic Foams Consisting Of Epoxy Hollow
description	Epoxy spheres were fabricated via coating technique which utilized series of epoxy/curing agent mixture onto expanded polystyrene beads (EPS) formulated at ratio of 1:0.5 (epoxy rich), 1: 1(equivalent ratio) and 1:2 (amine rich) and their characteristic were investigated in term of differential scanning calorimeter (DSC), appearance and compressive behaviour. The results showed that EHS produced using epoxy/curing agent ratio of 1:1, exhibited smooth coating surface and yielded strong shell structure reflected from analysis of curing characteristic using DSC technique. An innovative approach involving vacuum assisted technique for preparation of syntactic foam made of epoxy hollow spheres and epoxy resin was introduced to be compared with syntactic foam produced through conventional technique; mold-casting technique. In this study, the resultant specimen was characterized for density and compression properties. Effect of different processing techniques on specimen was analysed through stress-strain curve and failure pattern of the syntactic foam filled EHS with the same EHS size. The vacuum assisted technique has successfully reduced voids within the matrix that was produced due to the processing technique and subsequently resulted in higher compressive strength and modulus. Specimen produced by the vacuum assisted technique was further investigated by varying several aspects in terms of cell sizes (BASF 403, BASF 303 and B-Normal) and internal structure of EHS (supported and unsupported). The effect of compression test orientation on the specimen failure pattern was also examined to assist in explaining in stress-strain curve difference. Under compressive loading, the failure initiated when stress concentrated on the weakest epoxy spheres slowly propagated through adjacent spheres and displayed wider horizontal plateau. When almost all sphere have been successfully collapsed, there was a drastic increase in stress on the stress-strain curve and this indicated that failure mechanism occurred via uniform densification throughout the specimen.
format	Thesis
qualification_level	Master's degree
author	Mutalib, Nor Azaniza Abdul
author_facet	Mutalib, Nor Azaniza Abdul
author_sort	Mutalib, Nor Azaniza Abdul
title	Innovative Approach For Production Of Epoxy Syntactic Foams Consisting Of Epoxy Hollow
title_short	Innovative Approach For Production Of Epoxy Syntactic Foams Consisting Of Epoxy Hollow
title_full	Innovative Approach For Production Of Epoxy Syntactic Foams Consisting Of Epoxy Hollow
title_fullStr	Innovative Approach For Production Of Epoxy Syntactic Foams Consisting Of Epoxy Hollow
title_full_unstemmed	Innovative Approach For Production Of Epoxy Syntactic Foams Consisting Of Epoxy Hollow
title_sort	innovative approach for production of epoxy syntactic foams consisting of epoxy hollow
granting_institution	Universiti Sains Malaysia
granting_department	Pusat Pengajian Kejuruteraan Bahan & Sumber Mineral
publishDate	2015
url	http://eprints.usm.my/46912/1/Innovative%20Approach%20For%20Production%20Of%20Epoxy%20Syntactic%20Foams%20Consisting%20Of%20Epoxy%20Hollow.pdf
_version_	1747821743469232128

Innovative Approach For Production Of Epoxy Syntactic Foams Consisting Of Epoxy Hollow

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