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Comparison of the reinforcing effect of muscovit and phlogopite in thermoplastic composites
Dissertation (MSc (Chemical Technology))--University of Pretoria, 2006.
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University of Pretoria
2013
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| _version_ | 1867613550405484544 |
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| access_status_str | Open Access |
| author2 | Verbeek, Casparus Johannes Reinhard |
| author_browse | Verbeek, Casparus Johannes Reinhard |
| author_facet | Verbeek, Casparus Johannes Reinhard |
| collection | Thesis |
| dc_rights_str_mv | © 2003, 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 (Chemical Technology))--University of Pretoria, 2006. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/28031 |
| institution | University of Pretoria (South Africa) |
| last_indexed | 2026-06-10T12:37:55.807Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2013 |
| publishDateRange | 2013 |
| publishDateSort | 2013 |
| 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:2263/28031 Comparison of the reinforcing effect of muscovit and phlogopite in thermoplastic composites Verbeek, Casparus Johannes Reinhard upetd@up.ac.za Mahlangu, Nikiwe Abigail Muscovit Reinforced plastics Thermoplastic composites Phlogopite UCTD Dissertation (MSc (Chemical Technology))--University of Pretoria, 2006. The mechanical properties of particulate filled polymers are influenced significantly by interfacial interactions. The adhesion between the polymer and the filler depends on the area of the interface and the strength of the interaction. The former is related to specific area of the filler while the strength of the interaction can be modified by surface treatment. This study is focused on comparing the reinforcing ability of muscovite and phlogopite with and without surface treatment. Muscovite and phlogopite are two common forms of mica. Mechanical properties such as Young's modulus, tensile strength, elongation and impact strength were used to compare the reinforcing ability of muscovite and phlogopite in EVA composites. The Young's modulus of the surface treated and non-surface treated composites increased with an increase in filler loading. Composites reinforced with muscovite had similar moduli compared to composites reinforced with phlogopite. The tensile strength of phlogopite reinforced composites increased with an increase in filler content while that of muscovite reinforced composites remained constant. Surface modification by both silane and stearic acid reduced the tensile strength of phlogopite reinforced composites. The tensile strength of stearic acid treated muscovite reinforced composites improved but not to the same extent as the silane treated composites. Both muscovite and phlogopite lead to a lowering of the impact strength at high filler loadings while the tensile impact strength of both muscovite and phlogopite reinforced composites improved when using silane and stearic acid. In non-surface treated systems, muscovite reinforced composites showed an initial increase in elongation while the elongation of phlogopite reinforced composites decreased with an increase in filler loading. Elongation at maximum load values, however, increased at low filler loadings, when using stearic acid. It can be concluded that stearic acid is not an effective coupling agent for mica/EVA composites and that the use of silane for phlogopite reinforced composites does not offer any improvement in mechanical properties. Chemical Engineering unrestricted 2013-09-07T12:45:05Z 2005-09-22 2013-09-07T12:45:05Z 2003-09-01 2006-09-22 2005-09-19 Dissertation Mahlangu, NA 2003, Comparison of the reinforcing effect of muscovite and phlogopite in thermoplastic composites, MEng dissertation, University of Pretoria, Pretoria, viewed yymmdd < http://hdl.handle.net/2263/28031 > H544/ag http://hdl.handle.net/2263/28031 http://upetd.up.ac.za/thesis/available/etd-09192005-155205/ © 2003, 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 | Muscovit Reinforced plastics Thermoplastic composites Phlogopite UCTD Comparison of the reinforcing effect of muscovit and phlogopite in thermoplastic composites |
| title | Comparison of the reinforcing effect of muscovit and phlogopite in thermoplastic composites |
| title_full | Comparison of the reinforcing effect of muscovit and phlogopite in thermoplastic composites |
| title_fullStr | Comparison of the reinforcing effect of muscovit and phlogopite in thermoplastic composites |
| title_full_unstemmed | Comparison of the reinforcing effect of muscovit and phlogopite in thermoplastic composites |
| title_short | Comparison of the reinforcing effect of muscovit and phlogopite in thermoplastic composites |
| title_sort | comparison of the reinforcing effect of muscovit and phlogopite in thermoplastic composites |
| topic | Muscovit Reinforced plastics Thermoplastic composites Phlogopite UCTD |
| url | http://hdl.handle.net/2263/28031 http://upetd.up.ac.za/thesis/available/etd-09192005-155205/ |