Macro-porous permeability aspects of MgSO4 salt hydrate foams for energy storage applications,Journal of Applied Polymer Science

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Macro-porous permeability aspects of MgSO4 salt hydrate foams for energy storage applications
Journal of Applied Polymer Science ( IF 2.7 ) Pub Date : 2021-11-16 , DOI: 10.1002/app.51924
Luigi Calabrese ₁ , Leonor Hernández ₂ , Rosa Mondragón ₂ , Luisa F. Cabeza ₃

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In the present work a macroporous silicone foam, able to contain the magnesium sulfate, was chosen as matrix for the reversible hydration/dehydration process of the salt hydrate. The aim of the article was addressed towards the assessment of the relationship among microstructure, permeability and mass diffusion of the composite foam. This aspect represents an essential step for the future industrial development of this composite material. The results show that the filler content influences the foam morphology where a transition from closed to mixed and then closed cell again was observed with increasing filler content. Consequently, depending on the distribution and interconnection of the structural channels, a different effectiveness in guaranteeing mass diffusion phenomena was identified. In particular, permeability tests show that foams with 50 wt% of salt hydrates have a highly interconnected microstructure allowing a permeability over three times higher than a closed cell structure making it suitable for thermochemical energy storage applications.

中文翻译：

用于储能应用的 MgSO4 水合物泡沫的大孔渗透性方面

在目前的工作中，选择能够含有硫酸镁的大孔有机硅泡沫作为水合物可逆水合/脱水过程的基质。本文的目的是评估复合泡沫的微观结构、渗透性和质量扩散之间的关系。这方面代表了这种复合材料未来工业发展的重要一步。结果表明，填料含量会影响泡沫形态，随着填料含量的增加，泡沫会出现从封闭到混合再到闭孔的转变。因此，根据结构通道的分布和互连，确定了保证质量扩散现象的不同有效性。特别是，

更新日期：2021-11-16

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