Synergistic effects of hydroxy silicone oil on intumescent flame retardant polypropylene system |
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Authors: | Xilei Chen Chuanmei Jiao |
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Affiliation: | (1) College of Environment and Safety Engineering, Qingdao University of Science and Technology, Qingdao, Shandong, 266042, People’s Republic of China |
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Abstract: | The effects of hydroxy silicone oil as a synergistic agent on the flame retardancy of intumescent flame retardant polypropylene
composites (IFR-PP) were studied, and the IFR system mainly consisted of the ammonium polyphosphate (APP), melamine (MEL)
and pentaerythritol (PER). The UL 94 rating, thermogravimetric analysis (TGA), cone calorimeter (CONE) and digital photograph
were used to evaluate the synergistic effects of hydroxy silicone oil (HSO). It has been found that the PP composite containing
only APP, MEL and PER does not show good flame retardancy at 30% additive level. The cone calorimeter results show that the
heat release rate, mass loss rate, mass, total heat release, carbon monoxide and carbon dioxide of PP/APP/MEL/PER/HSO composites
decrease in comparison with the PP/APP/MEL/PER composite. The digital photographs demonstrated that HSO could promote to form
the homogenous and compact intumescent char layer. Thus, a suitable amount of HSO plays a synergistic effect in the flame
retardancy. |
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Keywords: | Polypropylene Intumescent Flame retardant Combustion |
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