膨胀石墨(EG)在超声作用下解离成微米级石墨片层(MSGF), 并加入到石蜡基体中制备得到石墨/石蜡复合相变储热材料, 并对复合相变材料的结构和热性能进行表征。实验结果表明, 该石墨/石蜡复合相变储热材料储热速率加快, 化学性质稳定. 随MSGF质量分数的增加, 固态及液态复合材料的导热系数均呈非线性显著增长, 相变温度及相变潜热略有降低。
EG was exfoliated into MSGF under high-energy ultrasound, and then the graphite/paraffin composite was prepared by mixing MSGF into melted paraffin. The structure and thermal properties of the composites were characterized using SEM, Hot Disk, and DSC. The experimental results show that the composites exhibit both high thermal conductivity and good thermal storage capacity, the speed of heat storage is raised and the chemical properties are stable. Moreover, with the increase of MSGF’s mass fraction, the thermal conductivity behaves non-liner increase both in solid and liquid states. Meanwhile, the melting point and latent heat capacity show negligible decrease.
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| [1] | |
| [2] | |
| [3] | |
| [4] | |
| [5] | |
| [6] | |
| [7] | |
| [8] | |
| [9] | |
| [10] | |
| [11] | |
| [12] | |
| [13] | |
| [14] | |
| [15] | |
| [16] |
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