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Effects of cross head speed on properties and energy absorption of sandwich AL/PU-PTFE foam composite

Master of Science in Polymer Engineering

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Bibliographic Details
Main Author: Rosaniza, Md Isa
Other Authors: Firuz, Zainuddin, Dr.
Format: Dissertation
Language:English
Published: Universiti Malaysia Perlis (UniMAP) 2015
Subjects:
Foamed materials
Urethane foam
Thermosetting composites
Polyurethanes
Composites
Composite materials
Energy absorption
Online Access:http://dspace.unimap.edu.my:80/xmlui/handle/123456789/72830
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spelling my.unimap-728302021-11-18T01:51:05Z Effects of cross head speed on properties and energy absorption of sandwich AL/PU-PTFE foam composite Rosaniza, Md Isa Firuz, Zainuddin, Dr. Foamed materials Urethane foam Thermosetting composites Polyurethanes Composites Composite materials Energy absorption Master of Science in Polymer Engineering This study to investigates the relations between cross head speed and the energy absorption of sandwich Al/PU/PTFE foam composite. The PU foam was prepared using the palm oil based polyol and isocyanate (MDI) with ratio of 1:1.1. The purpose addition of 2% PTFE filler for improve the properties of the foam such as resistance when load applied on composite structure according to stiffness, strength, thermal stability and other structural properties. The flexural properties and energy absorption was study by using different cross head speed (5, 10, 15 and 20 mm/min) on PU/PTFE foam composite and sandwich foam composite. Moreover, the effect of PTFE on X-Ray diffraction, DSC, TGA and FTIR in PU foam composite were also investigated. It was found that PU/PTFE showed the lower crystallinity index as compared to PU foam due to the poor arrangement of PTFE. The DSC results indicate that adding of PTFE gives the higher heat stability even heated above its crystalline melting temperature of 327 °C while PTFE also shows better thermal resistance than PU foam for TGA result. That means, PU/PTFE foam composite takes longer time to fully degrade than PU foam. Furthermore, the medium crosshead speed (10 and 15 mm/min) shows the higher flexural strength and flexural modulus for PU foam and PU/PTFE either in composite or sandwich foam. Meanwhile, the energy absorption of PU and PU/PTFE was increases due the lower cross head speed and this can delay the crack failure. In sandwich foam, the ductility of Al sheet used to increase the energy absorption and improved the strength of sandwich foam. 2015 2021-11-18T01:45:16Z 2021-11-18T01:45:16Z Dissertation http://dspace.unimap.edu.my:80/xmlui/handle/123456789/72830 en Universiti Malaysia Perlis (UniMAP) Universiti Malaysia Perlis (UniMAP) School of Materials Engineering
institution Universiti Malaysia Perlis
building UniMAP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Perlis
content_source UniMAP Library Digital Repository
url_provider http://dspace.unimap.edu.my/
language English
topic Foamed materials
Urethane foam
Thermosetting composites
Polyurethanes
Composites
Composite materials
Energy absorption
spellingShingle Foamed materials
Urethane foam
Thermosetting composites
Polyurethanes
Composites
Composite materials
Energy absorption
Rosaniza, Md Isa
Effects of cross head speed on properties and energy absorption of sandwich AL/PU-PTFE foam composite
description Master of Science in Polymer Engineering
author2 Firuz, Zainuddin, Dr.
author_facet Firuz, Zainuddin, Dr.
Rosaniza, Md Isa
format Dissertation
author Rosaniza, Md Isa
author_sort Rosaniza, Md Isa
title Effects of cross head speed on properties and energy absorption of sandwich AL/PU-PTFE foam composite
title_short Effects of cross head speed on properties and energy absorption of sandwich AL/PU-PTFE foam composite
title_full Effects of cross head speed on properties and energy absorption of sandwich AL/PU-PTFE foam composite
title_fullStr Effects of cross head speed on properties and energy absorption of sandwich AL/PU-PTFE foam composite
title_full_unstemmed Effects of cross head speed on properties and energy absorption of sandwich AL/PU-PTFE foam composite
title_sort effects of cross head speed on properties and energy absorption of sandwich al/pu-ptfe foam composite
publisher Universiti Malaysia Perlis (UniMAP)
publishDate 2015
url http://dspace.unimap.edu.my:80/xmlui/handle/123456789/72830
_version_ 1724609918377394176
score 13.222552

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