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首页> 美国卫生研究院文献>Materials >The Influence of Environmentally Friendly Flame Retardants on the Thermal Stability of Phase Change Polyurethane Foams
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The Influence of Environmentally Friendly Flame Retardants on the Thermal Stability of Phase Change Polyurethane Foams

机译：环保型阻燃剂对相变聚氨酯泡沫塑料热稳定性的影响

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摘要

To improve thermal insulation, microencapsulated phase change materials (micro-PCMs), expandable graphite (EG), and ammonium polyphosphate (APP) were introduced into polyurethane foam (PUF) to enhance the thermal stability and improve the thermal insulation behavior. The morphology of the PUF and micro-PCM was studied using a scanning electronic microscope (SEM), while the thermophysical properties of the PUF were investigated using a hot disk thermal constants analyzer and differential scanning calorimetry (DSC). The thermal stability of the PUF was investigated by thermogravimetric analysis (TGA), and the gas products volatilized from the PUF were analyzed by thermogravimetric analysis coupled with Fourier transform infrared spectrometry (TGA-FTIR). The results revealed that the thermal conductivities of the PUF were reduced because micro-PCM is effective in absorbing energy, showing that the PUF functions not only as a thermal insulation material but also as a heat sink for energy absorption. Moreover, the EG and APP were found to be effective in improving the thermal stabilities of the PUF, and the optimized formulation among EG, APP, and micro-PCMs in the PUF showed a significant synergistic effect.
机译：为了改善隔热性能，将微囊化相变材料（micro-PCMs），可膨胀石墨（EG）和聚磷酸铵（APP）引入聚氨酯泡沫（PUF）中，以增强热稳定性并改善隔热性能。使用扫描电子显微镜（SEM）研究了PUF和micro-PCM的形态，同时使用热盘热常数分析仪和差示扫描量热法（DSC）研究了PUF的热物理性质。通过热重分析（TGA）研究PUF的热稳定性，并通过热重分析结合傅里叶变换红外光谱（TGA-FTIR）分析从PUF挥发的气体产物。结果表明，由于微型PCM有效地吸收能量，PUF的热导率降低了，这表明PUF不仅用作绝热材料，而且还用作吸收能量的散热器。而且，发现EG和APP对于改善PUF的热稳定性是有效的，并且在PUF中的EG，APP和微PCM之间的优化配方表现出显着的协同作用。

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