Page 61 - 《精细化工》2020年第9期

第 37 卷第 9 期 精 细 化 工 Vol.37, No.9
202 0 年 9 月 FINE CHEMICALS Sept. 2020

功能材料
有机酸/碳纳米管复合相变材料的制备及性能

徐 众 1,2,3 ，侯 静 1,2,3 ，李 军 2,3 ，吴恩辉 2,3 ，黄 平 2,3

（1. 攀枝花学院 钒钛学院，四川 攀枝花 617000；2. 四川省太阳能利用技术集成工程实验室，四川 攀
枝花 617000；3. 太阳能技术集成及应用推广四川省高校重点实验室，四川 攀枝花 617000）

摘要：以多壁碳纳米管（MWCNT）为支撑材料，十二酸（LA）、十四酸（MA）、十六酸（PA）或十八酸（SA）
为相变主材，采用熔融共混法制备不同成型复合相变材料。利用压片机、红外热成像仪、导热系数测试仪、DSC
和电阻率测试仪对成型材料的物理性质、温度场分布、蓄-放热时间、导热率和电阻率进行测试。结果表明，成
型压力和 MWCNT 添加量对复合材料密度影响较小。4 种有机酸 LA、MA、PA、SA 中分别添加 24%、19%、
25%和 26%的 MWCNT（均为质量分数，以反应体系总质量计，下同）时，有机酸不会泄漏；成型后虽然温度
场分布更均匀，且具有良好的疏水性，但蓄热速度减缓；4 种复合相变材料导热率分别比纯有机酸提高 2.7~3.7
倍、2.7~4.5 倍、2.7~4.4 倍和 1.7~2.4 倍；复合相变材料的冷热循环潜热均有所下降；当压力从 1 MPa 升到 11 MPa
时，复合材料电阻率分别减小 75.9%、76.5%、72.2%和 74.0%，材料电阻率变化曲线拟合结果表明两者之间相
关性较高。制备的复合相变材料具有良好的疏水、导热和导电性能。
关键词：多壁碳纳米管；有机酸；成型复合相变材料；温度场分布；热导率；电阻率；功能材料
中图分类号：TK02；TB34 文献标识码：A
文章编号：1003-5214 (2020) 09-1775-12 开放科学 (资源服务) 标识码 (OSID)：

Preparation and properties of multi-wall carbon organic
acid/nano-tube composites phase change materials

2,3
2,3
2,3
XU Zhong 1,2,3 , HOU Jing 1,2,3 , LI Jun , WU Enhui , HUANG Ping
（1. College of Vanadium and Titanium, Panzhihua University, Panzhihua 617000, Sichuan, China; 2. Sichuan Provincial
Engineering Laboratory of Solar Technology Integration, Panzhihua 617000, Sichuan, China; 3. Application and Solar
Technology Integration Sichuan Provincial Key Laboratory of University, Panzhihua 617000, Sichuan, China）

Abstract: The composite phase change materials were prepared by melting blending method with lauric
acid (LA), myristic acid (MA), palmitic acid (PA) or stearic acid (SA) as main phase change materials and
multi-wall carbon nano-tube (MWCNT) as support material. The physical properties, temperature field
distribution, heat store and release time, thermal conductivity and resistivity of composites as form-stable
phase change materials were characterized by tablet pressing machine, infrared thermal imager, thermal
conductivity instrument, DSC and resistivity meter. The results showed that molding pressure and additive
amount of MWCNT had no distinct influence on the density of composites as form-stable phase change
materials. When MWCNT of 24%, 19%, 25% and 26% (mass fraction, based on the total mass of
reaction system, the same below) were added to LA, MA, PA and SA respectively, the organic acids
would not leak. Although the composites as form-stable phase change materials had more uniform
temperature field distribution after molding and had good hydrophobicity, the heat storage rate slowed
down. The thermal conductivities of the composite materials were improved respectively 2.7~3.7 times,
2.7~4.5 times, 2.7~4.4 times and 1.7~2.4 times compared with those of the corresponding pure organic
acids. While the enthalpies of composites as form-stable phase change materials were reduced. When the

收稿日期：2020-04-06; 定用日期：2020-05-18; DOI: 10.13550/j.jxhg.20200295
基金项目：国家级大学生创新项目（201911360002）；四川省教育厅太阳能高校重点实验室项目（2018TYNSYS-Y-04）；攀枝花市指
导性科技计划项目（2019ZD-S-27）；攀枝花大学科技园发展有限责任公司种子基金“双创”项目（2019-07）；钒钛资源综合利用四川
省重点实验室（2019FTSZ10）
作者简介：徐 众（1985—），男，硕士，讲师，E-mail：418968604@qq.com。