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Coating processes towards selective laser sintering of energetic material composites
Dissertation (MSc (Applied Science:Chemical Technology))--University of Pretoria, 2019.
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| Format: | Thesis |
| Language: | English |
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University of Pretoria
2021
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| _version_ | 1867613519312060416 |
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| access_status_str | Open Access |
| author2 | Focke, Walter Wilhelm |
| author_browse | Focke, Walter Wilhelm |
| author_facet | Focke, Walter Wilhelm |
| collection | Thesis |
| dc_rights_str_mv | © 2020 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. |
| description | Dissertation (MSc (Applied Science:Chemical Technology))--University of Pretoria, 2019. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/79246 |
| institution | University of Pretoria (South Africa) |
| language | English |
| last_indexed | 2026-06-10T12:37:26.341Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2021 |
| publishDateRange | 2021 |
| publishDateSort | 2021 |
| publisher | University of Pretoria |
| publisherStr | University of Pretoria |
| record_format | dspace |
| source_str | UPSpace — University of Pretoria Institutional Repository |
| spelling | oai:repository.up.ac.za:2263/79246 Coating processes towards selective laser sintering of energetic material composites Focke, Walter Wilhelm u17397678@tuks.co.za Kalombo, Lonji Jiba, Zetu UCTD Coating processes Energetic Materials Simulants Mock explosives Additive manufacturing Engineering, built environment and information technology theses SDG-08 Engineering, built environment and information technology theses SDG-09 Engineering, built environment and information technology theses SDG-12 Dissertation (MSc (Applied Science:Chemical Technology))--University of Pretoria, 2019. This research aims to contribute to the safe methodology for additive manufacturing (AM) of energetic materials. Coating formulation processes were investigated to find a suitable method that may enable selective laser sintering (SLS) as the safe method for fabrication of high explosive (HE) compositions. For safety and convenience reasons, the concept demonstration was conducted using inert explosive simulants with properties quasi-similar to the real HE. Coating processes for simulant RDX-based microparticles by means of PCL and 3,4,5- trimethoxybenzaldehyde (as TNT simulant) are reported. These processes were evaluated for uniformity of coating the HE inert simulant particles with binder materials to facilitate the SLS as the adequate binding and fabrication method. The critical constraints being the coating effectiveness required, spherical particle morphology, micron size range (>20 μm) and a good powder deposition and flow, and performance under SLS to make the method applicable for HEs. Of the coating processes investigated, suspension system and single emulsion methods gave required particle near spherical morphology, size and uniform coating. The suspension process appears to be suitable for the SLS of HE mocks and potential formulation methods for active HE composites. The density was estimated to be comparable with the current HE compositions and plastic bonded explosives (PBXs) such as C4 and PE4, produced from traditional methods. The formulation method developed and the understanding of the science behind the processes paves the way toward safe SLS of the active HE compositions and may open avenues for further research and development of munitions of the future. mi2026 Chemical Engineering MSc (Applied Science:Chemical Technology) Unrestricted SDG-08: Decent work and economic growth SDG-09: Industry, innovation and infrastructure SDG-12: Responsible consumption and production 2021-04-06T07:22:23Z 2021-04-06T07:22:23Z 2020/05/05 2019 Dissertation Jiba, Z 2019, Coating processes towards selective laser sintering of energetic material composites, MSc Dissertation, University of Pretoria, Pretoria, viewed yymmdd <http://hdl.handle.net/2263/79246> A2020 http://hdl.handle.net/2263/79246 en © 2020 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. application/pdf University of Pretoria |
| spellingShingle | UCTD Coating processes Energetic Materials Simulants Mock explosives Additive manufacturing Engineering, built environment and information technology theses SDG-08 Engineering, built environment and information technology theses SDG-09 Engineering, built environment and information technology theses SDG-12 Coating processes towards selective laser sintering of energetic material composites |
| title | Coating processes towards selective laser sintering of energetic material composites |
| title_full | Coating processes towards selective laser sintering of energetic material composites |
| title_fullStr | Coating processes towards selective laser sintering of energetic material composites |
| title_full_unstemmed | Coating processes towards selective laser sintering of energetic material composites |
| title_short | Coating processes towards selective laser sintering of energetic material composites |
| title_sort | coating processes towards selective laser sintering of energetic material composites |
| topic | UCTD Coating processes Energetic Materials Simulants Mock explosives Additive manufacturing Engineering, built environment and information technology theses SDG-08 Engineering, built environment and information technology theses SDG-09 Engineering, built environment and information technology theses SDG-12 |
| url | http://hdl.handle.net/2263/79246 |