高等学校化学学报 ›› 2023, Vol. 44 ›› Issue (12): 20230222.doi: 10.7503/cjcu20230222

• 物理化学 • 上一篇    下一篇

纳米银负载三聚氰胺泡沫基相变复合材料的一步法制备及结构与性能

张子文, 董明阳, 储瑶, 李蔚, 蔡以兵()   

  1. 江南大学生态纺织教育部重点实验室, 无锡 214122
  • 收稿日期:2023-05-04 出版日期:2023-12-10 发布日期:2023-08-23
  • 通讯作者: 蔡以兵 E-mail:yibingcai@jiangnan.edu.cn
  • 基金资助:
    江苏省第六期“333”高层次人才培养工程[批准号: (2022)3-16-216]、 装备预研教育部联合基金(8091B022202);江南大学大学生创新训练计划项目(2023057Y)

Structure and Properties of One-step Prepared Nano-silver Supported Melamine Foam Based Phase Change Composites

ZHANG Ziwen, DONG Mingyang, CHU Yao, LI Wei, CAI Yibing()   

  1. Key Laboratory of Eco?Textiles of the Ministry of Education,Jiangnan University,Wuxi 214122,China
  • Received:2023-05-04 Online:2023-12-10 Published:2023-08-23
  • Contact: CAI Yibing E-mail:yibingcai@jiangnan.edu.cn
  • Supported by:
    the Sixth “333” High Level Talent Training Project in Jiangsu Province, China[No.(2022)3-16-216], the Equipment Pre-research Joint Fund of Ministry of Education, China(8091B022202);the Undergraduate Innovation and Training Program of Jiangnan University, China(2023057Y)

摘要:

以轻质柔性的三聚氰胺泡沫(MF)作为基体, 将其置于由乙二醇(EG)、 硝酸银(AgNO3)、 聚乙烯吡咯烷酮(PVP)和氯化铜(CuCl2)组成的反应溶液中, 利用高温环境中发生的氧化还原反应在泡沫骨架上生成纳米银(Ag), 随后通过真空浸渍法在泡沫基体中封装月桂酸(LA)制备相变复合材料. 采用扫描电子显微镜(SEM)、 X射线衍射仪(XRD)、 差示扫描量热仪(DSC)和红外热成像仪等对制得的相变复合材料的形貌、 结构和热性能进行研究. 结果表明, 当AgNO3浓度为4 mg/mL时, 纳米Ag均匀致密地沉积在MF骨架表面, 且同时存在Ag纳米粒子(AgNPs)和Ag纳米线(AgNWs)两种形态. 相变复合材料的相变焓高达144.0 J/g, 相变焓效率超过了80%, 呈现出优异的温度调节和储热能力. 本文提供了一种制备综合性能优异的相变复合材料的新策略, 有利于拓宽相变复合材料的应用领域.

关键词: 相变复合材料, 三聚氰胺泡沫(MF), 纳米银, 储热性能

Abstract:

The lightweight and flexible melamine foam(MF) served as the matrix was placed in a reaction solution consisting of ethylene glycol(EG), silver nitrate(AgNO3), polyvinylpyrrolidone(PVP), and copper chloride (CuCl2). Under high temperature conditions, a redox reaction occurred, resulting in the formation of nano-silver(Ag) on the foam skeleton. Subsequently, the phase change composites were fabricated by encapsulating lauric acid(LA) in foam matrix through vacuum impregnation method. The morphology, structure, and thermal properties of the phase change composites were investigated by scanning electron microscope(SEM), X-ray diffractometer(XRD), differential scanning calorimeter(DSC), and infrared thermal imager, respectively. The results indicated that when the concentration of AgNO3 was 4 mg/mL, nano-Ag was uniformly and densely deposited on the surface of the MF skeleton, and there were two forms of Ag, nanoparticles(AgNPs) and Ag nanowires(AgNWs), presented simultaneously. The latent heat of phase change composites could reach up to 144.0 J/g, and the thermal efficiency exceeded 80%, demonstrating superior temperature regulation and heat storage capability. This paper provides a novel strategy for the fabrication of phase change composites with outstanding comprehensive property, thereby being in favor of broadening their potential applications.

Key words: Phase change composite, Melamine foam(MF), Nano-silver, Thermal energy storage property

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