Physicomechanical behavior of composites of polypropylene, and mineral fillers with different process cycles
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| Format: | Artículo científico |
| Language: | en |
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Universidad Nacional de Colombia
2018
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| _version_ | 1876446100793065472 |
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| author | Carolina Caicedo |
| author_facet | Carolina Caicedo |
| contents | Physicomechanical behavior of composites of polypropylene, and mineral fillers with different process cycles Carolina Caicedo Aldo Vázquez Arce Omar Hernán Ossa Hever De La Cruz Alfredo Maciel Cerda Ingeniería rheology Recycling thermal properties mechanical properties thermoplastic matrix compounds In this work, a development of composites of polypropylene PP with mineral fillers M of talc and calcium carbonate CaCO3 by co-extrusion and injection techniques were carried out. In the preparation of the mixtures, was used the rheometric analysis to define the optimum temperature of the extrusion process, and a weight ratio of 80:20 PP: fillers was maintained, while for the injection molding process six generations of PP and its compounds were obtained to study the rheological, thermal, morphological and mechanical properties of the new series of PPnM composites formed from a recycled matrix and the PPMn series reprocessed compounds for up to six cycles. The results allowed correlating the changes due to the thermal history and the influence of adding the mineral fillers. The mechanical characterization in the reprocessed matrix indicated a 6.0% decrease in tensile strength and an increase in flexural strength of 9.9%. Likewise, the compounds showed an increase in tensile strength of 11.7%, while flexural strength reached 35.8%. From the thermogravimetric analysis, the degradation temperature in the matrix gradually decreased from 406.5 °C to 364.3 °C, for the sixth generation with respect to the virgin material by the injection process; meanwhile, for the compounds was maintained around 410 °C indicating an optimal interaction, these results could be contrasted with the colorimetric analysis. Finally, re-injection led to a significant decrease in the size of the talc and CaCO3 particles; the sizes were estimated from microstructural analysis from Scanning Electron Microscope. 2018 artículo científico 0012-7353 https://www.redalyc.org/articulo.oa?id=49658894034 https://www.redalyc.org/journal/496/49658894034/ https://www.redalyc.org/journal/496/49658894034/html/ https://www.redalyc.org/journal/496/49658894034/49658894034.epub https://www.redalyc.org/journal/496/49658894034/movil 10.15446/dyna.v85n207.71894 en http://www.redalyc.org/revista.oa?id=496 Dyna application/pdf Universidad Nacional de Colombia Dyna (Colombia) Num.207 Vol.85 |
| format | Artículo científico |
| id | redalyc_49658894034 |
| institution | Redalyc |
| language | en |
| publishDate | 2018 |
| publisher | Universidad Nacional de Colombia |
| spellingShingle | Physicomechanical behavior of composites of polypropylene, and mineral fillers with different process cycles Carolina Caicedo Ingeniería rheology Recycling thermal properties mechanical properties thermoplastic matrix compounds Physicomechanical behavior of composites of polypropylene, and mineral fillers with different process cycles Carolina Caicedo Aldo Vázquez Arce Omar Hernán Ossa Hever De La Cruz Alfredo Maciel Cerda Ingeniería rheology Recycling thermal properties mechanical properties thermoplastic matrix compounds In this work, a development of composites of polypropylene PP with mineral fillers M of talc and calcium carbonate CaCO3 by co-extrusion and injection techniques were carried out. In the preparation of the mixtures, was used the rheometric analysis to define the optimum temperature of the extrusion process, and a weight ratio of 80:20 PP: fillers was maintained, while for the injection molding process six generations of PP and its compounds were obtained to study the rheological, thermal, morphological and mechanical properties of the new series of PPnM composites formed from a recycled matrix and the PPMn series reprocessed compounds for up to six cycles. The results allowed correlating the changes due to the thermal history and the influence of adding the mineral fillers. The mechanical characterization in the reprocessed matrix indicated a 6.0% decrease in tensile strength and an increase in flexural strength of 9.9%. Likewise, the compounds showed an increase in tensile strength of 11.7%, while flexural strength reached 35.8%. From the thermogravimetric analysis, the degradation temperature in the matrix gradually decreased from 406.5 °C to 364.3 °C, for the sixth generation with respect to the virgin material by the injection process; meanwhile, for the compounds was maintained around 410 °C indicating an optimal interaction, these results could be contrasted with the colorimetric analysis. Finally, re-injection led to a significant decrease in the size of the talc and CaCO3 particles; the sizes were estimated from microstructural analysis from Scanning Electron Microscope. 2018 artículo científico 0012-7353 https://www.redalyc.org/articulo.oa?id=49658894034 https://www.redalyc.org/journal/496/49658894034/ https://www.redalyc.org/journal/496/49658894034/html/ https://www.redalyc.org/journal/496/49658894034/49658894034.epub https://www.redalyc.org/journal/496/49658894034/movil 10.15446/dyna.v85n207.71894 en http://www.redalyc.org/revista.oa?id=496 Dyna application/pdf Universidad Nacional de Colombia Dyna (Colombia) Num.207 Vol.85 |
| title | Physicomechanical behavior of composites of polypropylene, and mineral fillers with different process cycles |
| topic | Ingeniería rheology Recycling thermal properties mechanical properties thermoplastic matrix compounds |
| url | https://www.redalyc.org/articulo.oa?id=49658894034 https://www.redalyc.org/journal/496/49658894034/ https://www.redalyc.org/journal/496/49658894034/html/ https://www.redalyc.org/journal/496/49658894034/49658894034.epub https://www.redalyc.org/journal/496/49658894034/movil |