WEATHERING OF INTUMESCENT PLA
Effect of temperature (T), relative humidity (RH) and ultraviolet light (UV) on neat and flame retarded (FR) polylactic acid (PLA) were investigated.In particular, (i) the fire performances, (ii) the molecular mass and (iii) the thermal properties after ageing were evaluated.The FR properties before and after ageing were compared using Limiting Oxygen Index (LOI) and Mass Loss Calorimetry (MLC).It was reported that deterioration of PLA, mainly driven by hydrolysis phenomenon under T/RH exposure, is enhanced by UV addition.Moreover, the decomposition of the material is accelerated in presence of FR fillers (melamine and ammonium polyphosphate).This is even more obvious when an organomodified montmorillonite is added.However, the FR properties are enhanced after ageing due to the behavior of the flame retarded materials during ageing (e.g.migration of the flame retardants, decrease of molecular mass...).
Nicolas Lesaffre Séverine Bellayer Ga(e)lle Fontaine Maude Jimenez Serge Bourbigot
R2Fire group/UMET-UMR CNRS 8207, Ecole Nationale Supérieure de Chimie de Lille (ENSCL), Avenue Dimitri Mendele(i)ev-B(a)t.C7a, CS 90108, 59652 Villeneuve dAscq, France
国际会议
长春
英文
86-87
2016-06-15(万方平台首次上网日期,不代表论文的发表时间)