Back to Search
Start Over
Form-stable and tough paraffin-Al2O3/high density polyethylene composites as environment-friendly thermal energy storage materials: preparation, characterization and analysis.
- Source :
- Journal of Thermal Analysis & Calorimetry; Dec2021, Vol. 146 Issue 5, p2089-2099, 11p
- Publication Year :
- 2021
-
Abstract
- In this study, we focus on important global issue containing both environmental pollution control and energy saving. High density polyethylene (HDPE) is utilized as supporting material to load paraffin, while Al<subscript>2</subscript>O<subscript>3</subscript> nano-powder is added into composite behaving as thermal conductivity enhancement to form composite phase change materials (paraffin-Al<subscript>2</subscript>O<subscript>3</subscript>/HDPE composite PCMs). By the adsorption test and differential scanning calomeritry (DSC) curves, the loading ratio of paraffin in paraffin/HDPE composite is 60%, via taking phase change enthalpy and thermal conductivity into integrated consideration, the adding ratio of Al<subscript>2</subscript>O<subscript>3</subscript> is 3% in paraffin-Al<subscript>2</subscript>O<subscript>3</subscript>/HDPE composite. And CMT4304 universal tester results manifest paraffin-Al<subscript>2</subscript>O<subscript>3</subscript>/HDPE composites have high compressive strength. For paraffin-Al<subscript>2</subscript>O<subscript>3</subscript>/HDPE composite with 3 mass% Al<subscript>2</subscript>O<subscript>3</subscript>, Fourier transformation infrared (FT-IR) result indicates no chemical interaction among raw materials but physical combination. DSC results identify composite PCM happens solid–solid phase transition at 33.3 ºC with enthalpy value of 10.7 J g<superscript>−1</superscript> and melts at 48.8 ºC with enthalpy value of 95.1 J g<superscript>−1</superscript>, and thermal cycling measurements demonstrate the form-stable composite PCM with adequate stability after 300 times melting/freezing cycles. Furthermore, the thermal conductivity of paraffin/HDPE composite is enhanced by 119.4% to attain 0.419 Wm<superscript>−1</superscript> K<superscript>−1</superscript> after addition of Al<subscript>2</subscript>O<subscript>3</subscript>. To sum up, form-stable and tough paraffin-Al<subscript>2</subscript>O<subscript>3</subscript>/HDPE composite PCMs look promising for application in building field as solar energy utilization materials. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 13886150
- Volume :
- 146
- Issue :
- 5
- Database :
- Complementary Index
- Journal :
- Journal of Thermal Analysis & Calorimetry
- Publication Type :
- Academic Journal
- Accession number :
- 153081909
- Full Text :
- https://doi.org/10.1007/s10973-020-10450-2