writer：Xin Wen, Nana Tian, Jiang Gong, Qing Chen, Yanlong Qi, Zhi Liu, Jie Liu, Zhiwei Jiang, etc.
keywords：carbon black, carbon nanotubes, flame retardancy, polypropylene, thermal stability
source：期刊
specific source：Polymers for Advanced Technologies 24 (2013) 971-977
Issue time：2013年
Nanosized carbon black (CB) was introduced into polypropylene/carbon nanotubes (PP/CNTs) nanocomposites to investigate the effect of multi‐component nanofillers on the thermal stability and flammability properties of PP. The obtained ternary nanocomposites displayed dramatically improved thermal stability compared with neat PP and PP/CNTs nanocomposites. Moreover, the flame retardancy of resultant nanocomposites was greatly improved with a significant reduction in peak heat release rate and increase of limited oxygen index value, and it was strongly dependent on the content of CB. This enhanced effect was attributed mainly to the formation of good carbon protective layers by CB and CNTs during combustion. Rheological properties further confirmed that CB played an important role on promoting the formation of crosslink network on the base of PP/CNTs system, which were also responsible for the improved thermal stability and flame retardancy of PP.