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Shape-stabilized phase change materials(PCMs) exhibit desirable thermal storage properties and are used for energy conservation systems.This study is focused on the preparation and thermal-/dynamic-mechanical properties of the bulk porous Al foams impregnated with organic PCMs such as paraffins and stearic acid.The results indicated that the new shape-stabilized PCMs composites could be produced by a simple and eco-friendly constant-pressure impregnation method.The filling fraction of PCMs was approximately more than 80% for the impregnated samples with vacuuming or without vacuuming.The shape-stabilized PCMs/Al-foam composites exhibited considerable latent thermal storage potential for good interface,desirable phase-change temperature range and latent heat values(72.9kJ/kg for the paraffin/Al-foam composite and 66.7kJ/kg for the stearic acid/Al-foam composite).Moreover,the impregnation of PCMs improved the dynamic-compression yield strength,durability and resistance to oxidation of Al foams and made its ideal energy-saving materials.
Shape-stabilized phase change materials (PCMs) exhibit desirable thermal storage properties and are used for energy conservation systems. This study is focused on the preparation and thermal- / dynamic-mechanical properties of the bulk porous Al foams impregnated with organic PCMs such as paraffins and stearic acid. The results indicated that the new shape-stabilized PCMs composites could be produced by a simple and eco-friendly constant-pressure impregnation method. The filling fraction of PCMs was approximately more than 80% for the impregnated samples with vacuuming or without vacuuming.The shape-stabilized PCMs / Al-foam composites exhibits considerable latent thermal storage potential for good interface, desirable phase-change temperature range and latent heat values (72.9 kJ / kg for the paraffin / Al-foam composite and 66.7 kJ / kg for the stearic acid / Al-foam composite) .Moreover, the impregnation of PCMs improved the dynamic-compression yield strength, durability and resistance to oxidation of Al foams and made its ideal energy-saving materials.