碳纳米管对泡沫铜/石蜡复合相变材料热性能的影响

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Abstract Copper foam (CF), carbon nanotubes (CNT) and paraffin were used to prepare CF/mixed CNT/paraffin and CF/catalyzed CNT/paraffin composite phase change materials (PCM). The mass ratio of CNT and paraffin was 1:99. SEM and Raman spectra were used to characterize the morphology and quality of the samples. The thermal conductivity and phase change behavior of phase change materials were measured by laser thermal conductivity tester and differential scanning calorimeter. The results show that the composite PCM is well compounded, and the thermal conductivity of paraffin can be improved by introducing two kinds of CNT. Even though the quality of mixed CNT is better than that of catalytic CNT, compared with the thermal conductivity of CF/mixed CNT/paraffin composite (3.28 W/(m∙K)), the thermal conductivity of CF/catalytic CNT/paraffin sample increases to 3.94 W/(m∙K). In addition, two kinds of CNT can effectively improve the influence of supercooling degree and shape stability of the paraffin.

Key words： copper foam carbon nanotube paraffin composite phase change material thermal conductivity supercooling degree

Received: 29 December 2019 Published: 19 June 2020

ZTFLH:	TB333
	O613.71

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	Articles by authors
	BAO Shengyou
	AN Junjie
	MA Li
	WEI Qiuping
	BO Zhenhai
	ZHOU Kechao

Cite this article:

BAO Shengyou,AN Junjie,MA Li, et al. Effect of carbon nanotube on thermal properties of copper foam/paraffin composite phase change materials[J]. Materials Science and Engineering of Powder Metallurgy, 2020, 25(2): 179-184.

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http://pmbjb.csu.edu.cn/EN/ OR http://pmbjb.csu.edu.cn/EN/Y2020/V25/I2/179

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