Research on Preparation and Property of Phase Change Mortar
Author(s): WANG Zhenshuang, HU Min, School of Investment and Construction Management, Dongbei University of Finance and Economics, Sichuan College and Architectural Technology, Department of Material Engineering
Pages: 315-321
Year: 2016 Issue: 2
Journal: Journal of Basic Science and Engineering
Keyword: paraffin; expanded Perlite; phase change mortar; strength; thermal conductivity coefficient;
Abstract: Phase change material and phase change mortar based on paraffin acting as the heatabsorbing material and expanded Perlite as the supportive material were prepared by vacuum adsorption method. The morphology and thermal properties of paraffin / expanded Perlite compostie PCM were investigated by SEM and different scanning calorimetry. Meanwhile,compressive strength,dry apparent density,thermal conductivity coefficient and timetemperature in three dimensional of phase change mortar were measured. The results indicated that the paraffin be immobilized in three-dimensional network structure during the process of phase change. The proportion of paraffin in the composite is 55. 47% by mass,and the phase change temperature and latent heat were 35. 59℃ and 96. 77 J / g,respectively. The compressive strength,dry apparent density,and thermal conductivity coefficient were 8. 0MPa,1678 kg / m3,and 0. 46W·m-1·K-1,respectively. The phase change mortar exhibits the low heating and cooling speed as well as the gentle temperature variation compared with the traditional mortar materials.
Pages: 315-321
Year: 2016 Issue: 2
Journal: Journal of Basic Science and Engineering
Keyword: paraffin; expanded Perlite; phase change mortar; strength; thermal conductivity coefficient;
Abstract: Phase change material and phase change mortar based on paraffin acting as the heatabsorbing material and expanded Perlite as the supportive material were prepared by vacuum adsorption method. The morphology and thermal properties of paraffin / expanded Perlite compostie PCM were investigated by SEM and different scanning calorimetry. Meanwhile,compressive strength,dry apparent density,thermal conductivity coefficient and timetemperature in three dimensional of phase change mortar were measured. The results indicated that the paraffin be immobilized in three-dimensional network structure during the process of phase change. The proportion of paraffin in the composite is 55. 47% by mass,and the phase change temperature and latent heat were 35. 59℃ and 96. 77 J / g,respectively. The compressive strength,dry apparent density,and thermal conductivity coefficient were 8. 0MPa,1678 kg / m3,and 0. 46W·m-1·K-1,respectively. The phase change mortar exhibits the low heating and cooling speed as well as the gentle temperature variation compared with the traditional mortar materials.
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