\r章学来¹，周孙希^{1, 2}，刘升²，李玉洋¹，徐笑锋¹，王迎辉¹，刘璐¹

AuthorsHTML:\r章学来¹，周孙希^{1, 2}，刘升²，李玉洋¹，徐笑锋¹，王迎辉¹，刘璐¹

AuthorsListE:\rZhang Xuelai¹，Zhou Sunxi^1，2，Liu Sheng²，Li Yuyang¹，Xu Xiaofeng ¹，Wang Yinghui¹，Liu Lu¹

AuthorsHTMLE:\rZhang Xuelai¹，Zhou Sunxi^1，2，Liu Sheng²，Li Yuyang¹，Xu Xiaofeng ¹，Wang Yinghui¹，Liu Lu¹

Unit:\r1. 上海海事大学蓄冷技术研究所，上海 201306；
2. 北京市农林科学院蔬菜研究中心，北京 100097

Unit_EngLish:\r1. Cool Storage Technology Institute，Shanghai Maritime University，Shanghai 201306，China；
2．Vegetable Research Center，Beijing Academy of Agriculture and Forestry Sciences，Beijing 100097，China\r
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Abstract_Chinese:\r针对有机相变材料导热性能差的缺点，以质量比为81∶19 的正辛酸(OA)-月桂酸(LA)二元有机相变蓄冷材料为基液，分别添加不同浓度高热导率的羟基化多壁碳纳米管(MWCNT-OH)、Fe2O3、Al2O3、Cu 以及分散剂SDBS，采用超声波振荡法制备纳米复合相变材料体系，从纳米粒子的种类和浓度来研究其对OA-LA 蓄冷性能的影响．实验发现，随着纳米粒子质量浓度的增加，热导率先增大，而后逐渐趋于稳定．加入纳米粒子的复合材料最佳热导率大小依次为：0.1,g/L MWCNT-OH＞0.4,g/L Fe2,O3＞0.3,g/L Al2O3＞0.3,g/L Cu．OA＋LA＋0.1,g/L,MWCNTOH＋0.2,g/L,SDBS 表现出最佳蓄冷特性，其热导率提高了21.9%,，相变温度没有变化，相变潜热增加了2.9%,，相变蓄冷时间缩短了16.7%,，经过200 次冻融循环测试后，仍保持适宜的相变温度和较高的相变潜热．因此，在果蔬冷链物流保鲜中有良好的应用前景．\r
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Abstract_English:\rIn order to increase the thermal conductivity of organic phase change materials(PCMs)，different high thermal conductivity nanoparticles，including hydroxylated multi-walled carbon nanotubes(MWCNT-OH)，Fe2O3， Al2O3,，Cu，and dispersant SDBS，were added into the n-octanoic acid(OA)-lauric acid(LA)organic phase change cold storage material(with a mass ratio of 81∶19)，respectively．The organic nanocomposites were prepared by the ultrasonic oscillation method，and the effect of the nanoparticles on the cold storage performance of the OA-LA was determined by analysis of the types and concentrations of the nanoparticles．The experimental results showed that as the nanomaterial mass concentration increased，the thermal conductivity increased first and then gradually stablized．The thermal conductivity trend for the composites added to the nanoparticles was：0.1,g/L MWCNT-OH＞0.4,g/L Fe2O3＞0.3,g/L Al2O3＞0.3,g/LCu．The OA＋LA＋0.1,g/L MWCNT-OH＋0.2,g/L SDBS exhibited the best thermal properties．Its thermal conductivity increased by 21.9%,，the phase change temperature did not change，the latent heat increased by 2.9%,，and the phase change storage time decreased by 16.7%,．After 200,thermal stability test tests，the nanocomposite PCMs still maintained the appropriate phase change temperature and high latent heat．Therefore，this material has potential as part of the cold chain logistics for fruit and vegetable preservation.\r
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Keyword_Chinese:蓄冷；有机相变材料；热导率；纳米粒子；冷链物流\r

Keywords_English:cold storage；organic phase change material；thermal conductivity；nanoparticles；cold chain logistics\r


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