采用简单制备方法制备的微胶囊化石蜡/聚苯胺用于太阳能储热的加速热循环测试

Accelerated Thermal Cycling Test of Microencapsulated Paraffin Wax/Polyaniline Made by Simple Preparation Method for Solar Thermal Energy Storage.

作者信息

Silakhori Mahyar, Naghavi Mohammad Sajad, Metselaar Hendrik Simon Cornelis, Mahlia Teuku Meurah Indra, Fauzi Hadi, Mehrali Mohammad

机构信息

Department of Mechanical Engineering and Advanced Material Research Center, University of Malaya, Kuala Lumpur 50603, Malaysia.

Department of Mechanical Engineering, Universiti Tenaga Nasional, Kajang 43000, Selangor, Malaysia.

出版信息

Materials (Basel). 2013 Apr 29;6(5):1608-1620. doi: 10.3390/ma6051608.

DOI:10.3390/ma6051608

PMID:28809232

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5452494/

Abstract

Microencapsulated paraffin wax/polyaniline was prepared using a simple polymerization technique, and its performance characteristics were investigated. Weight losses of samples were determined by Thermal Gravimetry Analysis (TGA). The microencapsulated samples with 23% and 49% paraffin showed less decomposition after 330 °C than with higher percentage of paraffin. These samples were then subjected to a thermal cycling test. Thermal properties of microencapsulated paraffin wax were evaluated by Differential Scanning Calorimeter (DSC). Structure stability and compatibility of core and coating materials were also tested by Fourier transform infrared spectrophotometer (FTIR), and the surface morphology of the samples are shown by Field Emission Scanning Electron Microscopy (FESEM). It has been found that the microencapsulated paraffin waxes show little change in the latent heat of fusion and melting temperature after one thousand thermal recycles. Besides, the chemical characteristics and structural profile remained constant after one thousand thermal cycling tests. Therefore, microencapsulated paraffin wax/polyaniline is a stable material that can be used for thermal energy storage systems.

摘要

采用简单的聚合技术制备了微胶囊化石蜡/聚苯胺，并对其性能特征进行了研究。通过热重分析（TGA）测定样品的重量损失。含23%和49%石蜡的微胶囊化样品在330℃后比含石蜡百分比更高的样品分解更少。然后对这些样品进行热循环测试。通过差示扫描量热仪（DSC）评估微胶囊化石蜡的热性能。还通过傅里叶变换红外光谱仪（FTIR）测试了芯材和包覆材料的结构稳定性及相容性，并用场发射扫描电子显微镜（FESEM）展示了样品的表面形态。研究发现，经过一千次热循环后，微胶囊化石蜡的熔化潜热和熔化温度几乎没有变化。此外，经过一千次热循环测试后，其化学特性和结构轮廓保持不变。因此，微胶囊化石蜡/聚苯胺是一种可用于热能存储系统的稳定材料。