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Synthetic hydromagnesite as flame retardant. Evaluation of the flame behaviour in a polyethylene matrix |
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| Authors: | Laia Haurie Ana Inés Fernández Josep Maria Chimenos Ferran Espiell |
| Institution: | a Departament de Ciència de Materials i Enginyeria Metal·lúrgica, Universitat de Barcelona, Martí i Franquès 1, E-08028 Barcelona, Spain b Centre Català del Plàstic, Universitat Politècnica de Catalunya, C/Colom 114, E-08222 Terrassa (Barcelona), Spain c Centre des Matériaux de Grande Diffusion (CMGD), Ecole des Mines d'Alès, 6, Avenue de Clavières, 30318 Alès Cedex, France |
| Abstract: | Synthetic hydromagnesite obtained from an industrial by-product was evaluated as a non-halogenated flame retardant. It was used in combination with aluminium hydroxide (ATH) and compared with commercial flame retardants like magnesium hydroxide (MH) and natural hydromagnesite-huntite (U) in a polyolefin system of low-density polyethylene/poly(ethylene-co-vinyl acetate) (LDPE/EVA).The thermal stability and flame behaviour of the halogen free flame retarded composites were studied by thermogravimetric and differential thermal analysis (TG-DTA), limiting oxygen index (LOI), epiradiateur and cone calorimeter. It has been shown that synthetic hydromagnesite could be an alternative solution to the use of MH in non-halogenated flame retardant systems in EVA. |
| Keywords: | Flame retardancy Hydrated fillers Hydromagnesite LDPE/EVA blends |
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