Premium
Synergistic effects of nano‐Mn 0.4 Zn 0.6 Fe 2 O 4 on intumescent flame‐retarded polypropylene
Author(s) -
Wang Xinlong,
Song Ye,
Bao Jianchun
Publication year - 2008
Publication title -
journal of vinyl and additive technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 35
eISSN - 1548-0585
pISSN - 1083-5601
DOI - 10.1002/vnl.20152
Subject(s) - intumescent , thermogravimetric analysis , limiting oxygen index , fourier transform infrared spectroscopy , materials science , polypropylene , thermal stability , scanning electron microscope , nuclear chemistry , nano , fire retardant , chemical engineering , char , chemistry , combustion , composite material , organic chemistry , engineering
The melamine salt of 5,5‐dimethyl‐1,3,2‐dioxaphos‐phorinane‐2‐oxide‐2‐hydroxide (IFR100) was used as an intumescent flame retardant in flame‐retarded polypropylene (PP). As a synergistic agent, nano‐Mn 0.4 Zn 0.6 Fe 2 O 4 was incorporated into the PP/IFR100 composite at different proportions. The synergistic effects of nano‐Mn 0.4 Zn 0.6 Fe 2 O 4 were studied by the limiting oxygen index (LOI) test, thermogravimetric analysis (TGA), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), and X‐ray diffraction (XRD). The synergistic effect of the nano‐Mn 0.4 Zn 0.6 Fe 2 O 4 additive with IFR100 was clearly observed by LOI. The TGA results showed that nano‐Mn 0.4 Zn 0.6 Fe 2 O 4 improved the thermal stability of the PP/IFR100 system above 400°C. On the basis of the FTIR and XRD results, it was evident that nano‐Mn 0.4 Zn 0.6 Fe 2 O 4 efficiently promoted the formation of a charred layer containing phosphocarbonaceous structures. The SEM micrographs indicated that nano‐Mn 0.4 Zn 0.6 Fe 2 O 4 strengthened the structure of the char layer remaining after combustion. J. VINYL ADDIT. TECHNOL., 2008. © 2008 Society of Plastics Engineers