期刊
JOURNAL OF FIRE SCIENCES
卷 26, 期 5, 页码 399-414出版社
SAGE PUBLICATIONS LTD
DOI: 10.1177/0734904108091990
关键词
polypropylene; lanthanum oxide; intumescent flame retardant; synergistic effect
资金
- National key Technology RD Program [2006BAK01B03, 2006BAK06B06, 2006BAK06B07]
- New Century Excellent Talents in University
Synergistic effects of lanthanum oxide (La2O3) on the flammability and thermal properties of intumescent flame-retardant polypropylene (IFR-PP) composites are investigated in the study. The limiting oxygen index (LOI), UL-94 test, and cone calorimeter results show that the flame retardancy of IFR-PP is improved significantly by the introduction of La2O3. The results of thermogravimetric analysis (TGA) indicate that thermal stability of IFR-PP is also enhanced. SEM pictures reveal that La2O3 addition improve the formation of a homogenous and compact intumescent char layer on the surface of the composites. The possible mechanism of the synergistic effects between La2O3 and IFR is proposed in the paper.
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