Synergistic effect of lanthanum oxide on intumescent flame-retardant polypropylene-based formulations

被引：21
|
作者：
Wu, Jing [1 ]
Hu, Yuan [1 ]
Song, Lei [1 ]
Kang, Wenjie [1 ]
机构：
[1] Univ Sci & Technol China, State Key Lab Fire Sci, Hefei 230026, Anhui, Peoples R China
来源：
JOURNAL OF FIRE SCIENCES | 2008年 / 26卷 / 05期
关键词：
polypropylene; lanthanum oxide; intumescent flame retardant; synergistic effect;
D O I：
10.1177/0734904108091990
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
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.
引用
收藏
页码：399 / 414
页数：16
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