期刊
POLYMER DEGRADATION AND STABILITY
卷 94, 期 9, 页码 1520-1525出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.polymdegradstab.2009.04.031
关键词
Montmorillonite; Decabromodiphenyl ethane; Antimony trioxide; Flame retardancy; Polypropylene
资金
- National Natural Science of China [B040203]
Polypropylene (PP) is melt-compounded in a twin-screw extruder with surface-modified decabromodiphenyl ethane/antimony trioxide (DBDPE/Sb2O3) and organically modified montmorillonite (OMMT). The intercalation and dispersion microstructure of OMMT in the nanocomposites are investigated by X-ray diffraction, scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Thermal stability and char residue are characterized by thermogravimetric and differential thermal analysis (TGA-DTA). Flame retardant properties are evaluated by limited oxygen index (LOI) and UL-94 vertical burning test. The results indicate that better flame retardancy can be achieved for the composite containing a modified mixture DBDPE/Sb2O3. The presence of DBDPE/Sb2O3 could improve the dispersion of OMMT in polypropylene, leading to higher thermal stability and more char residue. A synergistic effect between OMMT and DBDPE/Sb2O3 has been observed and discussed. (c) 2009 Elsevier Ltd. All rights reserved.
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