A NEW SYNERGIST FOR INTUMESCENT FLAME RETARDANT POLYPROPYLENE*

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A NEW SYNERGIST FOR INTUMESCENT FLAME RETARDANT POLYPROPYLENE*

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- A NEW SYNERGIST FOR INTUMESCENT FLAME RETARDANT POLYPROPYLENE*
- A NEW SYNERGIST FOR INTUMESCENT FLAME RETARDANT POLYPROPYLENE*
- 高分子科学（英文版） 2002年20卷第4期页码：377-380
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- 纸质出版：2002-08-20
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A NEW SYNERGIST FOR INTUMESCENT FLAME RETARDANT POLYPROPYLENE*[J]. 高分子科学（英文版）, 2002,20(4):377-380.

A NEW SYNERGIST FOR INTUMESCENT FLAME RETARDANT POLYPROPYLENE*[J]. 2002, 20(4): 377-380.
A NEW SYNERGIST FOR INTUMESCENT FLAME RETARDANT POLYPROPYLENE*[J]. 高分子科学（英文版）, 2002,20(4):377-380. DOI：

A NEW SYNERGIST FOR INTUMESCENT FLAME RETARDANT POLYPROPYLENE*[J]. 2002, 20(4): 377-380. DOI：

摘要

The synergistic effects of silicotungstic acid (SiW12) as a carelyst in the phosphorus-nitrogen compounds AM-based intumescent flame-retardant (IFR) polypropylene (PP) were studied using the limiting oxygen index(LOI)

the UL-94test

thermogravimetric analysis (TGA)

real time Fourier transform infrared (FTIR)

laser Raman spectroscopy (LRS). TheLOI data show that SiW12 added to PP/IFR systems has a synergistic FR effect with an IFR additive named AM. The TGA data show that SiW12 apparently increases the thermal stability of the PP/IFR systems at high temperature(T>500℃).The FTIR results provide the positive evidence that IFR can improve the thermal stability of PP and SiW12 can information a higher rate of formation of phosphoric acid and its derivatives.The LRS measurements provide useful information on the carbonaceous microstructures.In short

a suitable amount of SiW12(1.5 wt%) exerts synergistic effects with the IFR by increasing the LOI value and the thermal stability at high temperature and promoting the formation of charred structures on the burning PP surface.

Abstract

the UL-94test

thermogravimetric analysis (TGA)

real time Fourier transform infrared (FTIR)

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