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In this study, the Capricpalmitic acid (CAPA) binary eutectic PCM was vacuum impregnated into the expanded vermiculite (EVM) to prepare CAPA/EVM composite phase change thermal storage material. FTIR, DSC, TG, and thermal cycling were used to assess the chemical compatibility, heat storage performance, thermal stability, and thermal reliability of CAPA/EVM. The results showed that CAPA was stably loaded in the layered pores of EVM through physical interaction, and CAPA/EVM had excellent chemical compatibility. The Melting and solidification phase transition temperatures of CAPA/EVM were 23.61 and 20.41 °C, respectively. The latent heat of melting and solidification phase transition were 67.22 and 64.87 J/g, respectively. The amount of CAPA encapsulated in EVM could reach 52.22%, and it had favorable thermal stability at working temperature. In addition, the CAPA/EVM maintained great thermal reliability after 100 thermal cycles, indicating its potential application in the building energy conservation field.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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