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Mechanical and thermo-physical properties of high-density polyethylene modified with talc
University of Borås, School of Engineering. (Polymer Group)
University of Borås, School of Engineering. (Polymer Group)
2013 (English)In: Journal of Applied Polymer Science, ISSN 0021-8995, E-ISSN 1097-4628, Vol. 129, no 4, 2128-2138 p.Article in journal (Refereed)
Abstract [en]

The aim of this study was to examine the physical, mechanical, and thermo-physical properties of high-density polyethylene (HDPE) modified with talc. Different weight fractions of talc (up to 35 wt %) were compounded with an HDPE matrix containing 2.5 wt % of carbon black (CB) in a twin-screw compounder. The composites were then processed by injection moulding to obtain specimens for testing. The results indicate that CB causes a significant decrease in the toughness, while talc not only enhances the thermal conductivity and thermo-physical properties of the composites but can also play a role in compensating for the negative effects of CB on impact resistance. The experimental data show that the presence of CB reduces the impact resistance of HDPE by up to 34%, while addition of up to 8 wt % talc can return this value to close to that of pure HDPE. No significant effect on the composite tensile yield and fracture strength was observed for either component at all concentrations. The thermal conductivity, thermal diffusivity, and specific density values of the composites increased almost linearly, but the increase in moisture absorption in the long term showed nonlinear behavior in the concentration range of the experiment.

Place, publisher, year, edition, pages
Wiley-Blackwell , 2013. Vol. 129, no 4, 2128-2138 p.
Keyword [en]
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Materials Engineering Polymer Chemistry
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URN: urn:nbn:se:hb:diva-1720DOI: 10.1002/app.38945ISI: 000319275700055Local ID: 2320/13140OAI: oai:DiVA.org:hb-1720DiVA: diva2:869789
Available from: 2015-11-13 Created: 2015-11-13 Last updated: 2017-05-02

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Kalantar Mehrjerdi, AdibSkrifvars, Mikael
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CiteExportLink to record
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