热解法制备碳纳米管及其在散热涂层中的应用研究

doi:10.11949/0438-1157.20231360

化工学报 ›› 2024, Vol. 75 ›› Issue (9): 3360-3368.DOI: 10.11949/0438-1157.20231360

• 材料化学工程与纳米技术 • 上一篇下一篇

热解法制备碳纳米管及其在散热涂层中的应用研究

吴学红¹^,²(), 韦新¹, 侯加文³, 吕财¹^,², 刘勇¹^,², 刘鹤¹^,², 常志娟⁴

^1.郑州轻工业大学能源与动力工程学院，河南郑州 450002
^2.河南省能源高效转化与利用国际联合实验室，河南郑州 450002
^3.河南中烟工业有限责任公司驻马店卷烟厂，河南驻马店 463002
^4.冷链食品加工与安全控制教育部重点实验室，河南郑州 450002

收稿日期:2023-12-21 修回日期:2024-06-12 出版日期:2024-09-25 发布日期:2024-10-10
通讯作者: 吴学红
作者简介:吴学红（1979—），男，博士，教授，wuxh1212@163.com
基金资助:
国家自然科学基金项目(52206122);河南省中原科技创新领军人才项目(234200510011);河南省重点研发计划项目(241111320900);郑州市协同创新专项（校重大重点项目培育）(2021ZDPY0107)

Preparation of carbon nanotubes by pyrolysis method and their application in heat dissipation coatings

Xuehong WU¹^,²(), Xin WEI¹, Jiawen HOU³, Cai LYU¹^,², Yong LIU¹^,², He LIU¹^,², Zhijuan CHANG⁴

^1.School of Energy and Power Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, Henan, China
^2.Henan International Joint Laboratory of Energy Efficient Conversion and Utilization, Zhengzhou 450002, Henan, China
^3.Henan Zhongyan Zhumadian Cigarette Factory, Zhumadian 463002, Henan, China
^4.Key Laboratory of Cold Chain Food Processing and Safety Control (Zhengzhou University of Light Industry), Ministry of Education, Zhengzhou 450002, Henan, China

Received:2023-12-21 Revised:2024-06-12 Online:2024-09-25 Published:2024-10-10
Contact: Xuehong WU

摘要/Abstract

摘要：

热管理在电子器件运行中起着至关重要的作用，在电子器件表面涂覆散热涂层可以有效强化辐射换热。以生物质为原材料制备碳纳米管（s-CNTs）并应用于散热涂层中，并测试其热性能。实验结果表明，反应前后均研磨比反应前研磨的s-CNTs平均孔径小27.6%，TEM表征s-CNTs管径在50~100 nm；当s-CNTs质量分数达到6%时，制备的涂层平均辐射率达到了0.9146；涂覆s-CNT散热涂层从100℃降为室温时，降温速率高达20℃/min。因此，s-CNTs纳米涂层在电子器件散热方面具有较好的应用前景。

关键词: 生物质, 复合材料, 辐射, 热解法, 碳纳米管涂层

Abstract:

Thermal management plays an important role in the operation of electronic devices, and the radiation heat transfer can be effectively enhanced by coating the surface of electronic devices. In this study, the carbon nanotubes (s-CNTs) were prepared from biomass as raw materials and applied to heat dissipation coatings to test thermal performance. The experiments showed that the average pore diameter of s-CNTs after grinding was 27.6% smaller than that before grinding, and the tube diameter of s-CNTs was 50—100 nm according to TEM. When the mass fraction of s-CNTs reached 6%, the average emissivity reached 0.9146. When the s-CNT cooling coating is applied from 100℃ to room temperature, the cooling rate is as high as 20℃/min. Therefore, s-CNTs nanocoatings have a good application prospect in the heat dissipation of electronic devices.

Key words: biomass, composites, radiation, pyrolysis method, carbon nanotube coating

中图分类号:

TQ 637

吴学红, 韦新, 侯加文, 吕财, 刘勇, 刘鹤, 常志娟. 热解法制备碳纳米管及其在散热涂层中的应用研究[J]. 化工学报, 2024, 75(9): 3360-3368.

Xuehong WU, Xin WEI, Jiawen HOU, Cai LYU, Yong LIU, He LIU, Zhijuan CHANG. Preparation of carbon nanotubes by pyrolysis method and their application in heat dissipation coatings[J]. CIESC Journal, 2024, 75(9): 3360-3368.

图/表 9

表1 催化剂成分

Table 1 Composition of catalysts

催化剂命名	生物质质量/g	六水氯化铁质量/g	双氰胺质量/g
a	1	0.5	1
b	1	0.5	2
c	1	0.5	3
d	1	0.5	4

图1 不同催化剂条件下制备的生物质碳纳米管的SEM形貌

Fig.1 SEM morphologies of biomass carbon nanotubes under different catalysts

图2 碳纳米管的SEM形貌图和孔径分布[(a)、（b）、（c）为反应前、前后、后球磨SEM图像；（d）、（e）、（f）为对应的孔径分布]

Fig.2 SEM images and pore size distribution of carbon nanotubes [(a)—(c) are the SEM images of ball mill before, after and after the reaction, and (d)—(f) are the corresponding pore size distribution maps]

图3 不同研磨方式的碳纳米管TEM图像

Fig.3 TEM images of carbon nanotubes under different grinding methods

图4 碳纳米管的拉曼光谱

Fig.4 Raman spectrum of carbon nanotubes

图5 碳纳米管的XRD谱图

Fig.5 XRD pattern of carbon nanotubes

图6 不同质量分数不同添加物涂层辐射率对比

Fig.6 The comparison of emissivity of coatings with different additives and mass fraction

图7 光谱辐射率[(a)~(c)为不同添加物各质量分数的涂层辐射率对比，(d)为不同质量分数各个涂层平均辐射率]

Fig.7 Spectral emissivity [(a)—(c) are the emissivity of the coatings with different mass fractions of different additives, and (d) are the average emissivity of each coating with different mass fractions]

图8 散热降温曲线

Fig.8 Heat dissipation and cooling curve

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热解法制备碳纳米管及其在散热涂层中的应用研究

Preparation of carbon nanotubes by pyrolysis method and their application in heat dissipation coatings

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