Synergistic effect of allophane with intumescent flame retardants on thermal behavior and fire retardancy of polypropylene
作者： Xinqing Su , Dongyan Li , Jie Tao , Qiwei Dai
DOI: 10.1007/S00289-015-1391-7
关键词:
摘要: The effects of allophane (ALL) as a synergistic agent on the flame retardancy and thermal stability intumescent flame-retardant (IFR) polypropylene composites were studied by limiting oxygen index (LOI), UL-94 test, cone calorimeter test (CONE) thermogravimetric analysis. incorporation ALL led to enhanced stability, LOI value ratings. CONE tests indicated that heat release rate, peak rate release, smoke production total mass loss values PP/IFR/ALL sample much lower than those PP/IFR pure PP samples. Fourier transform infrared spectrometry result proved presence silicoaluminophosphate which can act catalytic enhance oxidative dehydration crosslinking charring process. Scanning electron microscopy Raman spectra observation demonstrated could promote forming homogenous compact char layer. mechanical properties also improved loading ALL.
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