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dc.contributor.authorSánchez, Alberto
dc.contributor.authorVillanueva, Sara
dc.date.accessioned2022-03-19T21:31:33Z
dc.date.available2022-03-19T21:31:33Z
dc.date.issued2022-03-09
dc.identifier.citationSánchez A, Villanueva S. Effect of aryl phosphates on toxicity of combustion gases of flame-retardant polycarbonate/acrylonitrile butadiene styrene blends according to EN 45545 railway standard. Fire and Materials. 2022;1-11. doi:10.1002/fam.3062en
dc.identifier.issn0308-0501en
dc.identifier.urihttp://hdl.handle.net/11556/1281
dc.description.abstractIn this study, the toxicity of combustion gases of polycarbonate/acrylonitrile butadiene styrene (ABS) blends that include aryl phosphates as flame-retardants (FRs) was analyzed according to the European railway standard EN 45545-2 (NBS chamber + FTIR). FRs have a significant influence on the evolution of the toxicity of gases generated during the combustion process. In the experiment, the asphyxiant hydrogen cyanide (HCN) was detected at the beginning of combustion (4 min of testing) as a product of ABS degradation. CO was generated throughout the test (8 min) because of the incomplete combustion of both the ABS and PC fractions. The presence of aryl phosphates promoted the inhibition of the flame. The reaction of PO radicals in the gas phase resulted in OH scavenging and a higher release of HCN and CO. The results suggest that aryl phosphates act in the first 4 min and do not have an effect later. FRs with lower thermal stability exhibited lower heat release and flame propagation but generated more toxic gases. This effect is attributed to the higher activity of the flame-retardant in the gas phase. Further, additional fire performance parameters, including thermal stability (thermogravimetric analysis), flammability (UL94), and heat and smoke generation (cone calorimeter), were studied. It was found that aryl phosphates reduced the fire hazard, prevented the spread of the flame, reduced heat generation, increased the time to ignition, and, at the same time, promoted the emission of toxic gases that differ in function of the selected flame-retardanten
dc.description.sponsorshipThe authors are grateful to the European Commission for its support in the Close WEEE Project GA 641747 and POLYCE project GA 730308en
dc.language.isoengen
dc.publisherJohn Wiley and Sons Ltden
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.titleEffect of aryl phosphates on toxicity of combustion gases of flame‐retardant polycarbonate/acrylonitrile butadiene styrene blends according to EN 45545 railway standarden
dc.typearticleen
dc.identifier.doi10.1002/fam.3062en
dc.relation.projectIDinfo:eu-repo/grantAgreement/EC/H2020/641747/EU/Close WEEEen
dc.relation.projectIDinfo:eu-repo/grantAgreement/EC/H2020/730308/EU/Post-Consumer High-tech Recycled Polymers for a Circular Economy/POLYCEen
dc.rights.accessRightsopenAccessen
dc.subject.keywordsaryl phosphatesen
dc.subject.keywordsEN 45545en
dc.subject.keywordsflame-retardant PC/ABSen
dc.subject.keywordspolymer compositesen
dc.subject.keywordstoxicity of gasesen
dc.identifier.essn1099-1018en
dc.journal.titleFire and Materialsen


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