Abstract：Palmitic acid-hexadecanol/silicon dioxide (PA-HD/SiO2) phase change energy storage materials were prepared by low-temperature solid-state reaction using the eutectic mixture of palmitic acid and hexadecanol(PA-HD) as phase change component and sodium silicate as silicon source. The structure,morphology,and thermal performance of the composite were characterized by Fourier transform infrared spectrometer (FT-IR),environmental scanning electron microscopy (ESEM),differential scanning calorimetry (DSC),and the test of melting and solidification process. The results show that when the ratio of mass fraction between phase change component and sodium silicate is 2,the eutectic mixture of palmitic acid and hexadecanol are effectively imbedded into the net of silicon dioxide by low-temperature solid-state reaction. The latent heat and melting temperature of the composite are 102.35J·g-1 and 53.69℃,respectively,and the composite has good thermal conductivity. Furthermore,the phase transition temperature of the eutectic mixture is improved owing to the coating effect of silicon dioxide.
马烽, 秦岩, 陆丰艳, 王晓燕. 棕榈酸-十六醇/二氧化硅相变储能材料的低热固相合成与表征[J]. 材料工程, 2014, 0(10): 71-74.
MA Feng, QIN Yan, LU Feng-yan, WANG Xiao-yan. Synthesis and Characterization of Palmitic Acid-hexadecanol/SiO2 Phase Change Energy Storage Materials by Solid-state Chemical Reaction at Low Temperature. Journal of Materials Engineering, 2014, 0(10): 71-74.
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