期刊
POLYMER DEGRADATION AND STABILITY
卷 98, 期 10, 页码 1972-1980出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.polymdegradstab.2013.07.018
关键词
Flame retardant; Polymer blend; Nanocomposites; Sepiolite; Charring
资金
- Wallonia Region
- Nord-Pas de Calais Region
- European Community
- European Commission
- Region Wallonne FEDER program (Materia Nova)
- OPTI2MAT program of excellence
- Interuniversity Attraction Pole program of the Belgian Federal Science Policy Office [PAI 6/27]
- FNRS-FRFC
The influence of the incorporation of polyamide-6 (PA) and natural sepiolite nanoparticles on both the thermal degradation and fire behaviour of polypropylene (PP) matrix has been investigated by thermogravimetric analysis (TGA) and mass loss calorimetry. For that purpose, PP/PA blends and nanocomposites thereof were prepared by melt processing. TGA results evidenced that the use of maleic anhydride grafted-polypropylene (MA-g-PP) as compatibilizer led to a significant improvement in thermal stability under air. Such improvement was linked to the formation of a char layer preventing the thermo-oxidative degradation of PP. Interestingly, the thermal resistance of this char layer was further improved by adding 5 wt% of natural sepiolite leading to important increase of time to ignition and reduction of peak of heat release rate (pHRR) during mass loss calorimeter test. (C) 2013 Elsevier Ltd. All rights reserved.
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