Rheological and Aesthetical Properties of Polyolefin Composites for Flame Retardant Cables with High Loading of Mineral Fillers
It was found that the use of natural magnesium hydroxide (n–MDH) as mineral filler in EVA based composites provided mechanical and rheological properties that did not completely comply with the halogen-free flame-retardant (HFFR) cables parameters. Moreover, the use of n–MDH mostly gave a rough grey...
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| Published in: | Micro Vol. 2; no. 3; pp. 524 - 540 |
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02-09-2022
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| Abstract | It was found that the use of natural magnesium hydroxide (n–MDH) as mineral filler in EVA based composites provided mechanical and rheological properties that did not completely comply with the halogen-free flame-retardant (HFFR) cables parameters. Moreover, the use of n–MDH mostly gave a rough grey surface in the compound extruded by rheometry capillary. In contrast, with the use of synthetic material (s–MDH), a combination of better outcomes was observed. Mechanical and rheological properties were more aligned with the application, and the aesthetics were also improved, i.e., the surface was smooth and whiter. Therefore, with the aim of obtaining good aesthetical quality on the extrudate, we studied formulations by varying the type of polymer matrix and using a mixture of the natural magnesium hydroxide combined with other kind of fillers (in a 3:1 ratio using as main filler n–MDH). On this account, we found a synergistic effect in the mechanical, rheological, and aesthetic properties for the filler blend system containing n–MDH in combination with s–MDH or Böhmite AlO(OH), or using a secondary polymer belonging to the polybutene family combined with EVA. |
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| AbstractList | It was found that the use of natural magnesium hydroxide (n–MDH) as mineral filler in EVA based composites provided mechanical and rheological properties that did not completely comply with the halogen-free flame-retardant (HFFR) cables parameters. Moreover, the use of n–MDH mostly gave a rough grey surface in the compound extruded by rheometry capillary. In contrast, with the use of synthetic material (s–MDH), a combination of better outcomes was observed. Mechanical and rheological properties were more aligned with the application, and the aesthetics were also improved, i.e., the surface was smooth and whiter. Therefore, with the aim of obtaining good aesthetical quality on the extrudate, we studied formulations by varying the type of polymer matrix and using a mixture of the natural magnesium hydroxide combined with other kind of fillers (in a 3:1 ratio using as main filler n–MDH). On this account, we found a synergistic effect in the mechanical, rheological, and aesthetic properties for the filler blend system containing n–MDH in combination with s–MDH or Böhmite AlO(OH), or using a secondary polymer belonging to the polybutene family combined with EVA. |
| Author | Pucci, Andrea Badalassi, Marco Haveriku, Sara Meucci, Michela Cardelli, Camillo |
| Author_xml | – sequence: 1 givenname: Sara orcidid: 0000-0002-2477-9296 surname: Haveriku fullname: Haveriku, Sara – sequence: 2 givenname: Michela orcidid: 0000-0002-8672-2551 surname: Meucci fullname: Meucci, Michela – sequence: 3 givenname: Marco surname: Badalassi fullname: Badalassi, Marco – sequence: 4 givenname: Camillo surname: Cardelli fullname: Cardelli, Camillo – sequence: 5 givenname: Andrea orcidid: 0000-0003-1278-5004 surname: Pucci fullname: Pucci, Andrea |
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| Cites_doi | 10.3390/app10227993 10.3390/polym13162709 10.1002/app.25054 10.1039/9781847559210 10.1016/j.progpolymsci.2016.12.007 10.1002/pat.977 10.1007/BF01171538 10.1177/0954008314540312 10.3390/micro2010011 10.1016/j.polymer.2005.05.084 10.1016/S0079-6700(01)00011-9 10.1122/1.1879043 10.3390/micro1010008 10.3390/polym13244451 10.1002/app.51621 10.1016/j.polymer.2005.07.030 10.1016/j.materresbull.2010.06.013 10.1007/3-540-52791-5 |
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