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  • Research on the preparation and properties of lauric acid/expanded perlite phase change materials
  • 来源:刘杰胜教授个人网站 2016-12-28
  • In this study, a form-stable lauric acid/expanded perlite (LA/EP) composite was prepared by absorbing

    paraffin into porous networks of expanded perlite. The form-stable composite was characterized by

    using Differential scanning calorimetry (DSC), Fourier transform infrared spectroscopy (FT-IR), Scanning

    electron microscope (SEM) techniques, durability and leakage test. Leakage test results showed that

    optimum and maximum mass fraction of LA contained in the composite without leakage is 70 wt.%. The

    FT-IR results revealed that there were physical interactions between the expanded perlite and the lauric

    acid. In addition, SEM images showed that LA can be quite evenly dispersed in the porous skeleton of EP.

    The melting temperature and latent heat of the form-stable EP/PA composite containing 70 wt.% lauric

    acid were determined as 43.2 ?C and 105.58 J/g, presenting its suitable phase transition temperature,

    sufficient latent heat, good thermal stability for application as composite phase change materials (PCMs).

    The durability test showed that the leakage problems of PCMs composite can be greatly prevented because

    of the interaction between the expanded perlite and the LA. All the results suggested that the form-stable

    EP/PA composite has great potential in building applications for thermal energy storage


  • [来源:中国聚合物网]
  • 了解更多请进入: 刘杰胜教授个人网站
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