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Author(s): |
Zhen-hua Guo, School of Energy and Environmental Engineering, Hebei Univercity of Technology,, Tianjin ,China
Ya-ke Jia, School of Energy and Environmental Engineering, Hebei Univercity of Technology,, Tianjin ,China
Xin Wang, School of Energy and Environmental Engineering, Hebei Univercity of Technology,, Tianjin ,China |
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Abstract: |
Preparation of capric acid and paraffin phase change material by using the principle of the low melting point, through the cooling curve test to find out the most satisfactory phase temperature. Mixed the capric acid / paraffin phase change material with the activation of sepiolite fibers toghter,through these processes like heating,melting and vacuum pumping etc, then capric acid / paraffin with sepiolite fibers composite phase change material can be obtained.To give out a systematic description of the change in the microstructure,appearance and properties of the sepiolite activation and composite phase change material by using SEM, DSC and TGA, and further discussed the effect of capric acid, paraffin and sepiolite on the function and performance of phase change material. The Research shows that when the mass fraction of 80% capric acid phase change material and sepiolite fibers composite melt mass ratio of 1:1 be compounded,the phase-change temperature of the obtained capric acid / paraffin sepiolite fibers composite phase change material becomes 26.4 ℃, the phase change enthalpy is 84.5J/g.The thermal stability and latent heat both increase significantly.
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