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首页> 外文期刊>Journal of Applied Polymer Science >Red phosphorus-control led decomposition for fire retardant PA 66
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Red phosphorus-control led decomposition for fire retardant PA 66

机译：阻燃PA 66的控制磷的红磷分解

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The thermal degradation and the combustion behavior of glass fiber-reinforced PA 66 materials containing red phosphorus were investigated. Thermogravimetry (TG), TG coupled with FTIR, and TG coupled with mass spectroscopy were used to investigate the thermal decomposition. The flame retardant red phosphorus was investigated with respect to the decomposition kinetics and the release of volatile products. The combustion behavior was characterized using a cone calorimeter. Fire risks and fire hazards were monitored versus external heat fluxes between 30 and 75 kW/m(2). Red phosphorus acts in the solid phase and its efficiency depends on the external heat flux. The use of red phosphorus results in an increased amount of residue and in a corresponding decrease in total heat release. The decrease of the mass loss rate peak results in a corresponding decrease of the peak heat release. With increasing external heat flux applied the first effect on the total heat release decreases linearly, whereas the second effect on the peak heat release expands linearly. The investigation provides insight into the mechanisms of how the fire retardant PA 66 is achieved by red phosphorus controlling the degradation kinetics. Taking into account that a decrease of the volatile products also leads to a decrease of heat production in the flame zone and that the char acts as heat transfer barrier, a reduced pyrolysis temperature is suggested as a further feedback effect. (C) 2002 John Wiley Sons, Inc. [References: 20]
机译：研究了含红磷的玻璃纤维增​​强PA 66材料的热降解和燃烧行为。用热重法（TG），TG结合FTIR以及TG结合质谱研究热分解。研究了阻燃红磷的分解动力学和挥发性产物的释放。使用锥形量热计表征燃烧行为。相对于30至75 kW / m（2）的外部热通量，监控了火灾风险和火灾隐患。红磷以固相作用，其效率取决于外部热通量。使用红磷会导致残留物数量增加，总放热量相应减少。质量损失率峰值的降低导致峰值放热的相应降低。随着施加的外部热通量的增加，对总热量释放的第一个影响呈线性下降，而对峰值热量释放的第二个影响呈线性扩大。该研究提供了通过红磷控制降解动力学来实现阻燃剂PA 66的机理的见解。考虑到挥发性产物的减少还导致火焰区热量的产生减少，并且炭充当传热屏障，因此建议降低热解温度作为进一步的反馈作用。 （C）2002 John Wiley Sons，Inc. [参考：20]

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