Semi–interpenetrating networks based on epoxy resin and oligophosphonate: Comparative effect of three hardeners on the thermal and fire properties

Traditional materials are being constantly replaced by synthetic polymers, most of which are highly flammable. Epoxy resins are versatile and among the most important class of polymers, due to their multiple crosslinking capacity endowed by the oxirane ring, their applications ranging from adhesives...

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Autores principales:	Cristian–Dragos Varganici, Liliana Rosu, Sandro Lehner, Corneliu Hamciuc, Milijana Jovic, Dan Rosu, Fanica Mustata, Sabyasachi Gaan
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Epoxy resin Oligophosphonate Semi–interpenetrating polymer network Evolved gases analysis Flame retardancy Materials of engineering and construction. Mechanics of materials TA401-492
Acceso en línea:	https://doaj.org/article/0aa4d49a12934bb09f17f3b7f3df3146
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spelling	oai:doaj.org-article:0aa4d49a12934bb09f17f3b7f3df31462021-11-10T04:17:46ZSemi–interpenetrating networks based on epoxy resin and oligophosphonate: Comparative effect of three hardeners on the thermal and fire properties0264-127510.1016/j.matdes.2021.110237https://doaj.org/article/0aa4d49a12934bb09f17f3b7f3df31462021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S0264127521007929https://doaj.org/toc/0264-1275Traditional materials are being constantly replaced by synthetic polymers, most of which are highly flammable. Epoxy resins are versatile and among the most important class of polymers, due to their multiple crosslinking capacity endowed by the oxirane ring, their applications ranging from adhesives to aeronautics. This study investigates the comparative effect of three hardeners (aromatic, cycloaliphatic, aliphatic) and the addition of an oligophosphonate on the thermal behavior and fire performance of bisphenol A diglycidyl ether semi–interpenetrating polymer networks. Networks with epoxy resin and 2% phosphorus loading were prepared. Evolved gases analyses, thermal and fire experiments were used to propose the action mode of the hardeners and oligophosphonate in the fire performance enhancement of the epoxy resin. Non–isothermal decomposition kinetics studies were conducted. The oligophosphonate in the epoxy resins promoted a significant reduction in the peak of heat release rate values (33 to 55%) in microscale combustion calorimeter experiments. A UL 94–V0 classification was achieved for the network with oligophosphonate and aromatic curing agent. The obtained results recommend the semi–interpenetrating network cured with aromatic hardener as a potential matrix for flame retardant composites or coatings.Cristian–Dragos VarganiciLiliana RosuSandro LehnerCorneliu HamciucMilijana JovicDan RosuFanica MustataSabyasachi GaanElsevierarticleEpoxy resinOligophosphonateSemi–interpenetrating polymer networkEvolved gases analysisFlame retardancyMaterials of engineering and construction. Mechanics of materialsTA401-492ENMaterials & Design, Vol 212, Iss , Pp 110237- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Epoxy resin Oligophosphonate Semi–interpenetrating polymer network Evolved gases analysis Flame retardancy Materials of engineering and construction. Mechanics of materials TA401-492
spellingShingle	Epoxy resin Oligophosphonate Semi–interpenetrating polymer network Evolved gases analysis Flame retardancy Materials of engineering and construction. Mechanics of materials TA401-492 Cristian–Dragos Varganici Liliana Rosu Sandro Lehner Corneliu Hamciuc Milijana Jovic Dan Rosu Fanica Mustata Sabyasachi Gaan Semi–interpenetrating networks based on epoxy resin and oligophosphonate: Comparative effect of three hardeners on the thermal and fire properties
description	Traditional materials are being constantly replaced by synthetic polymers, most of which are highly flammable. Epoxy resins are versatile and among the most important class of polymers, due to their multiple crosslinking capacity endowed by the oxirane ring, their applications ranging from adhesives to aeronautics. This study investigates the comparative effect of three hardeners (aromatic, cycloaliphatic, aliphatic) and the addition of an oligophosphonate on the thermal behavior and fire performance of bisphenol A diglycidyl ether semi–interpenetrating polymer networks. Networks with epoxy resin and 2% phosphorus loading were prepared. Evolved gases analyses, thermal and fire experiments were used to propose the action mode of the hardeners and oligophosphonate in the fire performance enhancement of the epoxy resin. Non–isothermal decomposition kinetics studies were conducted. The oligophosphonate in the epoxy resins promoted a significant reduction in the peak of heat release rate values (33 to 55%) in microscale combustion calorimeter experiments. A UL 94–V0 classification was achieved for the network with oligophosphonate and aromatic curing agent. The obtained results recommend the semi–interpenetrating network cured with aromatic hardener as a potential matrix for flame retardant composites or coatings.
format	article
author	Cristian–Dragos Varganici Liliana Rosu Sandro Lehner Corneliu Hamciuc Milijana Jovic Dan Rosu Fanica Mustata Sabyasachi Gaan
author_facet	Cristian–Dragos Varganici Liliana Rosu Sandro Lehner Corneliu Hamciuc Milijana Jovic Dan Rosu Fanica Mustata Sabyasachi Gaan
author_sort	Cristian–Dragos Varganici
title	Semi–interpenetrating networks based on epoxy resin and oligophosphonate: Comparative effect of three hardeners on the thermal and fire properties
title_short	Semi–interpenetrating networks based on epoxy resin and oligophosphonate: Comparative effect of three hardeners on the thermal and fire properties
title_full	Semi–interpenetrating networks based on epoxy resin and oligophosphonate: Comparative effect of three hardeners on the thermal and fire properties
title_fullStr	Semi–interpenetrating networks based on epoxy resin and oligophosphonate: Comparative effect of three hardeners on the thermal and fire properties
title_full_unstemmed	Semi–interpenetrating networks based on epoxy resin and oligophosphonate: Comparative effect of three hardeners on the thermal and fire properties
title_sort	semi–interpenetrating networks based on epoxy resin and oligophosphonate: comparative effect of three hardeners on the thermal and fire properties
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/0aa4d49a12934bb09f17f3b7f3df3146
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Semi–interpenetrating networks based on epoxy resin and oligophosphonate: Comparative effect of three hardeners on the thermal and fire properties

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