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Selective laser sintering of polymer nanocomposites

his thesis presents research to investigate the use of polymer nanocomposites (PNCs) as a raw material for the selective laser sintering (SLS) process. The novelty of this work lies in the fact that PNC materials have been prepared for the SLS rocess thr...

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Main Author: Wahab, Md Saidin
Format: Thesis
Language:English
Published: 2008
Subjects:
TA Engineering (General). Civil engineering (General)
TA401-492 Materials of engineering and construction. Mechanics of materials
Online Access:http://eprints.uthm.edu.my/7192/1/24p%20MD%20SAIDIN%20WAHAB.pdf
http://eprints.uthm.edu.my/7192/
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spelling my.uthm.eprints.71922022-06-14T02:16:54Z http://eprints.uthm.edu.my/7192/ Selective laser sintering of polymer nanocomposites Wahab, Md Saidin TA Engineering (General). Civil engineering (General) TA401-492 Materials of engineering and construction. Mechanics of materials his thesis presents research to investigate the use of polymer nanocomposites (PNCs) as a raw material for the selective laser sintering (SLS) process. The novelty of this work lies in the fact that PNC materials have been prepared for the SLS rocess through mechanical blending (ball milling) and solution blending techniques. PNC materials containing a polyamide (PA) and nano particles (5wt%) were roduced by mechanical blending and solution blending with the aim to improve the echanical properties. In mechanical blending, commercial Durafom PA was tumble nd ball milled with several nano particle materials: yttrium stabilised zirconia (YSZ), enton 166 (Bl66), Bentolite WH (BWH) and Mineral colloide MO (MCMO). For olution blending, commercial polyamide 6 (PA6) was dissolved in formic acid (HC02H) together with the same nano additive materials used in the mechanical lending and spray-dried to create powder. Material characteristics (physical and hemical elements), thermal properties, powder bed density and flowability of the aterials have all been investigated. The materials were processed on a C02 SLS xperimental machine where the SLS processing characteristics and processing arameters were established. Mechanical properties of the PNCs were evaluated and he results were compared with the unfilled base polymer. From the result of the mechanical blending process, only blended uraform/YSZ was successfully processed by SLS, and results were also limited for he blended Duraform/YSZ as a result of improper dispersion of nano particles in the atrix. Good dispersion of additives was achieved by solution blending, however the A6 was degraded during the material preparation and spray drying process which esulted in the formation of porous structure and low strength. However the addition of 5 wt% nano particles in the PA6 was shown to increase strength by an average of 0-60%. Further work on powder preparation is required in order to fully realise hese performance benefits. 2008-04 Thesis NonPeerReviewed text en http://eprints.uthm.edu.my/7192/1/24p%20MD%20SAIDIN%20WAHAB.pdf Wahab, Md Saidin (2008) Selective laser sintering of polymer nanocomposites. Doctoral thesis, University of Leeds.
institution Universiti Tun Hussein Onn Malaysia
building UTHM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Tun Hussein Onn Malaysia
content_source UTHM Institutional Repository
url_provider http://eprints.uthm.edu.my/
language English
topic TA Engineering (General). Civil engineering (General)
TA401-492 Materials of engineering and construction. Mechanics of materials
spellingShingle TA Engineering (General). Civil engineering (General)
TA401-492 Materials of engineering and construction. Mechanics of materials
Wahab, Md Saidin
Selective laser sintering of polymer nanocomposites
description his thesis presents research to investigate the use of polymer nanocomposites (PNCs) as a raw material for the selective laser sintering (SLS) process. The novelty of this work lies in the fact that PNC materials have been prepared for the SLS rocess through mechanical blending (ball milling) and solution blending techniques. PNC materials containing a polyamide (PA) and nano particles (5wt%) were roduced by mechanical blending and solution blending with the aim to improve the echanical properties. In mechanical blending, commercial Durafom PA was tumble nd ball milled with several nano particle materials: yttrium stabilised zirconia (YSZ), enton 166 (Bl66), Bentolite WH (BWH) and Mineral colloide MO (MCMO). For olution blending, commercial polyamide 6 (PA6) was dissolved in formic acid (HC02H) together with the same nano additive materials used in the mechanical lending and spray-dried to create powder. Material characteristics (physical and hemical elements), thermal properties, powder bed density and flowability of the aterials have all been investigated. The materials were processed on a C02 SLS xperimental machine where the SLS processing characteristics and processing arameters were established. Mechanical properties of the PNCs were evaluated and he results were compared with the unfilled base polymer. From the result of the mechanical blending process, only blended uraform/YSZ was successfully processed by SLS, and results were also limited for he blended Duraform/YSZ as a result of improper dispersion of nano particles in the atrix. Good dispersion of additives was achieved by solution blending, however the A6 was degraded during the material preparation and spray drying process which esulted in the formation of porous structure and low strength. However the addition of 5 wt% nano particles in the PA6 was shown to increase strength by an average of 0-60%. Further work on powder preparation is required in order to fully realise hese performance benefits.
format Thesis
author Wahab, Md Saidin
author_facet Wahab, Md Saidin
author_sort Wahab, Md Saidin
title Selective laser sintering of polymer nanocomposites
title_short Selective laser sintering of polymer nanocomposites
title_full Selective laser sintering of polymer nanocomposites
title_fullStr Selective laser sintering of polymer nanocomposites
title_full_unstemmed Selective laser sintering of polymer nanocomposites
title_sort selective laser sintering of polymer nanocomposites
publishDate 2008
url http://eprints.uthm.edu.my/7192/1/24p%20MD%20SAIDIN%20WAHAB.pdf
http://eprints.uthm.edu.my/7192/
_version_ 1738581588227129344
score 13.211869

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