Citation:
Pan Wanli, Chen Changzhong, Liu Wenmin, Peng Kelin. Synthesis and Properties of Polymeric Solid-Solid Phase Change Material Based on the Skeleton of Hexahydroxy Compounds[J]. Chemistry,
;2016, 79(3): 254-258.
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Three kinds of new polymeric solid-solid phase change meterials (SSPCMs) with different crosslinking structures were synthesized and characterized for thermal energy storage. In the SSPCMs, the hexahydroxy compounds sorbitol, dipentaerythritol and inositol were individually employed as the molecular skeleton and polyethylene glycol (PEG) was used as the phase change functional chain. The molecular structure, crystalline properties, phase change behaviors, thermal reliability and stability of the synthesized SSPCMs were investigated by FT IR, XRD, POM, DSC and TG, respectively. The results showed that the synthesized SSPCMs have high thermal energy storage density and an applicable temperature range of 30~70℃, and the maximum phase change enthalpy in the heating and cooling process for them is 107.5J·g-1 and 102.9J·g-1, respectively. They have good reusability, excellent thermal reliability and stability from the heating-cooling thermal cycle test and TG curves. So they have potential application in the areas of thermal energy storage and temperature-control.
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