期刊
POLYMER DEGRADATION AND STABILITY
卷 95, 期 10, 页码 2041-2048出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.polymdegradstab.2010.07.005
关键词
Polycarbonate; Aryl phosphate; Organo-montmorillonite; Flame retardant; Synergy; Nanocomposites
资金
- National High Technology Research and Development Program 863 [2007AA03Z538]
A series of flame retardant formulations of solid bisphenol A bis(diphenyl phosphate) (S-BDP) and organo-montmorillonite (OMMT) were prepared based on polycarbonate (PC) by a melt compounding procedure. OMMT was well dispersed into the matrix showing an intercalated-exfoliated morphology. S-BDP and OMMT exhibit a synergistic effect in the vertical burning test (UL-94) but an antagonistic effect in the limiting oxygen index (LOI) evaluation. Thermogravimetric analysis (TGA) of the flame retarded PC system both under nitrogen and air was performed. Migration of S-BDP and OMMT towards the surface occurs during combustion. The introduction of OMMT could especially enhance the thermal-oxidative stability of the material, which is further confirmed by the analysis of the char residues by scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). (C) 2010 Elsevier Ltd. All rights reserved.
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