Abstract Thermal management technologies that use biobased composites compose of phase change materials (PCM) and inorganic porous materials. We focused on diatoms as the composites because they consist of porous biosilica frustules and inner lipids. Diatoms purified from food organisms were added to gypsum at different concentrations to simulate the production of a building material. The mixtures were uniaxially pressed to prepare compacted powder samples. The apparent densities of the samples increased with an increase in the diatom concentration. The thermal diffusivities of the samples with more than 11 vol% of the diatom were higher than that of sample without the diatom. The 4 vol% diatom sample showed the lowest maximum temperature when heated from 25 to 60 °C. The existence of localized diatoms in the samples strongly influenced their thermal conduction.

中文翻译：

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硅藻作为相变材料的潜力

摘要 使用由相变材料 (PCM) 和无机多孔材料组成的生物基复合材料的热管理技术。我们专注于作为复合材料的硅藻，因为它们由多孔生物二氧化硅硅藻壳和内部脂质组成。从食物有机体中纯化的硅藻以不同浓度添加到石膏中，以模拟建筑材料的生产。将混合物单轴压制以制备压实的粉末样品。样品的表观密度随着硅藻浓度的增加而增加。含有超过 11 vol% 硅藻的样品的热扩散率高于不含硅藻的样品。当从 25°C 加热到 60°C 时，4 vol% 硅藻样品显示出最低的最高温度。