Modeling the Thermal Conductivity Inhomogeneities of Injection-Molded Particle-Filled Composites, Caused by Segregation
| Autor: | Orsolya Viktória Semperger, András Suplicz, József Gábor Kovács |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
010407 polymers
Filler (packaging) Materials science Polymers and Plastics Flow (psychology) 02 engineering and technology Molding (process) polymer-matrix composites 01 natural sciences injection-molded composites effective thermal conductivity thermal conductivity modeling Article lcsh:QD241-441 chemistry.chemical_compound Thermal conductivity lcsh:Organic chemistry Thermal Composite material Electrical conductor Polypropylene General Chemistry 021001 nanoscience & nanotechnology Segregation of fillers 0104 chemical sciences chemistry Particle 0210 nano-technology |
| Zdroj: | Polymers Volume 11 Issue 10 Polymers, Vol 11, Iss 10, p 1691 (2019) |
| ISSN: | 2073-4360 |
| DOI: | 10.3390/polym11101691 |
| Popis: | Many applications require new materials that have good thermal conductivity, are electrical insulators and can be processed easily and with relatively little energy. A new innovative solution for this problem is thermally conductive composites, which can replace metals in many cases. Many papers have focused on the prediction of their thermal conductivity. At the same time segregation has to be taken into account in the case of composites because it affects the distribution of thermally conductive particles, and thus local thermal conductivities. In this paper, we examined and modeled segregation during injection molding and its effect on thermal conductivity. We injection-molded samples from polypropylene with glass beads of different sizes and analyzed their filler content as a function of the flow path. We described the distribution of the filler with a mathematical model. Using this, we created a new, segregation-dependent model that describes the local thermal conductivity of polymer composites as a function of filler content with great accuracy. |
| Databáze: | OpenAIRE |
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