Preparation of a novel PEG composite with halogen-free flame retardant supporting matrix for thermal energy storage application
Preparation of a novel PEG composite with halogen-free flame retardant supporting matrix for thermal energy storage application
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新型无卤阻燃支撑基体PEG复合材料的制备用于热能储存
DOI：
10.1016/j.apenergy.2012.12.070
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发表时间：
2013-06-01
期刊：
影响因子：
11.2
通讯作者：
Liu, Jiping
中科院分区：
文献类型：
--
作者：
Qian, Yong;Wei, Ping;Liu, Jiping
采用原位盐凝胶法制备了聚乙二醇（PEG）/倍半硅氧烷复合材料。通过固态P-31和Si-29核磁共振（NMR）和傅里叶变换红外光谱（FT-IR）对复合材料的结构进行了表征。采用N-2吸附-解吸测量来研究支撑基质的多孔结构。通过差示扫描量热法（DSC）、热重分析（TGA）和热解燃烧流动量热法（PCFC）研究了热性能和阻燃性能。结果表明，PEG 复合材料表现出较大的潜热（124.7 kJ/kg）。热循环1000次后，复合材料仍具有124.1 kJ/kg的较大潜热，表明复合材料具有良好的热可靠性。通过积分程序分解温度（IPDT）分析，复合材料的固有热稳定性明显提高。复合材料的峰值热释放率(PHRR)较纯PEG降低了38.6%。与纯PEG相比，达到PHRR的时间增加了31秒。这种新型形状稳定的PEG复合材料有潜力成为用于热能存储应用的无卤阻燃相变复合材料。 (C) 2013 Elsevier Ltd. 保留所有权利。
Poly (ethylene glycol) (PEG)/silsesquioxane composite was prepared by in situ sal-gel process. The structure of composite was characterized by solid state P-31 and Si-29 nuclear magnetic resonance (NMR) and Fourier transform infrared spectroscopy (FT-IR). N-2 adsorption-desorption measurement was used to investigate the porous structure of supporting matrix. Thermal and flame retardancy properties were investigated by differential scanning calorimetry (DSC), thermogravimetric analysis (TGA) and pyrolysis combustion flow calorimetry (PCFC). Results indicated the PEG composite showed large latent heat (124.7 kJ/kg). After thermal cycling for 1000 cycles, the composite still had large latent heat of 124.1 kJ/kg, showing the composite had good thermal reliability property. The composite had obvious increased intrinsic thermal stability through analysis of integral procedural decomposition temperature (IPDT). The peak of heat release rate (PHRR) of composite was decreased by 38.6% compared with pure PEG. And the time to PHRR was increased by 31 s compared with pure PEG. The novel shape-stabilized PEG composite had potential to become halogen-free fire resistance phase change composite for thermal energy storage application. (C) 2013 Elsevier Ltd. All rights reserved.