Impact of different flame retardants on the properties of epoxy resins

Autor: Gomez-Fernandez, Sandra, Jubete, Elena, Lopez, Blai, Navarro, Arsenio, Roig, Inma, Ritter, Klaus, Storz, Christof, Gogibus, Nicolas, Rekondo, Alaitz
Přispěvatelé: European Commission
Jazyk: angličtina
Předmět:
Zdroj: Addi. Archivo Digital para la Docencia y la Investigación
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ISSN: 1588-2926
1388-6150
DOI: 10.1007/s10973-019-08286-6
Popis: Different types of phosphorus containing halogen-free flame retardants (FRs) were added to an epoxy-dicyandiamide resin formulation in order to study to which extent they affect its glass transition temperature (Tg), tensile properties, termal stability and burning behavior of the resin. For this purpose, an additive-type FR (ammonium polyphosphate encapsulated in melamine resin, MAPP) and two reactive-type FRs i) a commercial epoxy resin pre-reacted with 9,10-dihydro-oxa-10- phosphaphenanthrene-10-oxide, (DOPO), and ii) a phosphorus containing hardener (poly(m-phenylene methylphosphonate), (PMP) were used. It was observed that the addition of additive-type FR did not affect in great extent the Tg and provided a V-0 rating in UL94 test at low loadings. The addition of reactive-type FRs (DOPO and/or PMP), however, modified the structure of the chain network resulting in lower crosslink density as a consequence of their higher equivalent mass, but achieving also with low PMP content V-0 rating. This project has received funding from the Shift2Rail Joint Undertaking under the European Union’s Horizon 2020 research and innovation programme under Grant Agreement No 777595.
Databáze: OpenAIRE
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