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Improving Mechanical Properties and Reaction to Fire of EVA/LLDPE Blends for Cable Applications with Melamine Triazine and Bentonite Clay

The high flame-retardant loading required for ethylene-vinyl acetate copolymer blends with polyethylene (EVA-PE) employed for insulation and sheathing of electric cables represents a significant limitation in processability and final mechanical properties. In this work, melamine triazine (TRZ) and m...

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Autores principales: Sanchez-Olivares, Guadalupe, Sanchez-Solis, Antonio, Manero, Octavio, Pérez-Chávez, Ricardo, Jaramillo, Mario, Alongi, Jenny, Carosio, Federico
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6696111/
https://www.ncbi.nlm.nih.gov/pubmed/31357530
http://dx.doi.org/10.3390/ma12152393
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author Sanchez-Olivares, Guadalupe
Sanchez-Solis, Antonio
Manero, Octavio
Pérez-Chávez, Ricardo
Jaramillo, Mario
Alongi, Jenny
Carosio, Federico
author_facet Sanchez-Olivares, Guadalupe
Sanchez-Solis, Antonio
Manero, Octavio
Pérez-Chávez, Ricardo
Jaramillo, Mario
Alongi, Jenny
Carosio, Federico
author_sort Sanchez-Olivares, Guadalupe
collection PubMed
description The high flame-retardant loading required for ethylene-vinyl acetate copolymer blends with polyethylene (EVA-PE) employed for insulation and sheathing of electric cables represents a significant limitation in processability and final mechanical properties. In this work, melamine triazine (TRZ) and modified bentonite clay have been investigated in combination with aluminum trihydroxide (ATH) for the production of EVA-PE composites with excellent fire safety and improved mechanical properties. Optimized formulations with only 120 parts per hundred resin (phr) of ATH can achieve self-extinguishing behavior according to the UL94 classification (V0 rating), as well as reduced combustion kinetics and smoke production. Mechanical property evaluation shows reduced stiffness and improved elongation at break with respect to commonly employed EVA-PE/ATH composites. The reduction in filler content also provides improved processability and cost reductions. The results presented here allow for a viable and halogen-free strategy for the preparation of high performing EVA-PE composites.
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spelling pubmed-66961112019-09-05 Improving Mechanical Properties and Reaction to Fire of EVA/LLDPE Blends for Cable Applications with Melamine Triazine and Bentonite Clay Sanchez-Olivares, Guadalupe Sanchez-Solis, Antonio Manero, Octavio Pérez-Chávez, Ricardo Jaramillo, Mario Alongi, Jenny Carosio, Federico Materials (Basel) Article The high flame-retardant loading required for ethylene-vinyl acetate copolymer blends with polyethylene (EVA-PE) employed for insulation and sheathing of electric cables represents a significant limitation in processability and final mechanical properties. In this work, melamine triazine (TRZ) and modified bentonite clay have been investigated in combination with aluminum trihydroxide (ATH) for the production of EVA-PE composites with excellent fire safety and improved mechanical properties. Optimized formulations with only 120 parts per hundred resin (phr) of ATH can achieve self-extinguishing behavior according to the UL94 classification (V0 rating), as well as reduced combustion kinetics and smoke production. Mechanical property evaluation shows reduced stiffness and improved elongation at break with respect to commonly employed EVA-PE/ATH composites. The reduction in filler content also provides improved processability and cost reductions. The results presented here allow for a viable and halogen-free strategy for the preparation of high performing EVA-PE composites. MDPI 2019-07-26 /pmc/articles/PMC6696111/ /pubmed/31357530 http://dx.doi.org/10.3390/ma12152393 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Sanchez-Olivares, Guadalupe
Sanchez-Solis, Antonio
Manero, Octavio
Pérez-Chávez, Ricardo
Jaramillo, Mario
Alongi, Jenny
Carosio, Federico
Improving Mechanical Properties and Reaction to Fire of EVA/LLDPE Blends for Cable Applications with Melamine Triazine and Bentonite Clay
title Improving Mechanical Properties and Reaction to Fire of EVA/LLDPE Blends for Cable Applications with Melamine Triazine and Bentonite Clay
title_full Improving Mechanical Properties and Reaction to Fire of EVA/LLDPE Blends for Cable Applications with Melamine Triazine and Bentonite Clay
title_fullStr Improving Mechanical Properties and Reaction to Fire of EVA/LLDPE Blends for Cable Applications with Melamine Triazine and Bentonite Clay
title_full_unstemmed Improving Mechanical Properties and Reaction to Fire of EVA/LLDPE Blends for Cable Applications with Melamine Triazine and Bentonite Clay
title_short Improving Mechanical Properties and Reaction to Fire of EVA/LLDPE Blends for Cable Applications with Melamine Triazine and Bentonite Clay
title_sort improving mechanical properties and reaction to fire of eva/lldpe blends for cable applications with melamine triazine and bentonite clay
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6696111/
https://www.ncbi.nlm.nih.gov/pubmed/31357530
http://dx.doi.org/10.3390/ma12152393
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