石蜡/SiO_(2)复合相变材料环氧树脂封装及热性能研究  

Thermal Properties of Paraffin/Micro-Nano SiO_(2)Phase Change Material with Epoxy Resin Coating

作　　者：陆威[1] 沈思扬 吴志根[2] 张冠华 LU Wei;SHEN Siyang;WU Zhigen;ZHANG Guanhua(School of Engineering,Shanghai University of Technology,Shanghai 200093;School of Environment,Tongji University,Shanghai 200092,China)

机构地区：[1]上海理工大学能动学院,上海200093 [2]同济大学环境学院,上海200092

出　　处：《广州化工》2025年第7期37-40,50,共5页GuangZhou Chemical Industry

基　　金：国家自然科学基金面上项目(52370149)。

摘　　要：本研究旨在提升石蜡基相变材料的热稳定性和循环稳定性,通过环氧树脂包覆技术制备石蜡/环氧树脂复合相变材料(EP-PCM)。在此研究中,采用真空吸附法制备了石蜡/SiO_(2)定形相变材料(SSPCM),随后利用环氧树脂固化的方法合成了EP-PCM。结果表明,EP-PCM的相变潜热为46.16 J/g。在循环稳定性测试中,EP-PCM在经历30次相变循环后几乎没有发生泄漏,最大质量损失不超过2.23wt%。此外,在100℃下加热8 h后,EP-PCM的质量变化仅为1.64%。本研究通过环氧树脂包覆的方法,成功克服了传统相变材料热稳定性差、泄漏问题,显著提高了材料的长周期循环性能与高温应用可靠性,为低泄漏相变材料的开发提供了全新的解决方案。Aiming to enhance the thermal and cycling stability of paraffin-based phase change materials(PCMs),paraffin/epoxy resin composite phase change materials(EP-PCM)was prepared via epoxy resin coating technology.Paraffin/SiO_(2)form-stable phase change material(SSPCM)was first synthesized using the vacuum adsorption method,followed by the preparation of EP-PCM through epoxy resin curing.Results indicated that the latent heat of phase transition for EP-PCM was 46.16 J·g^(-1).In cycling stability tests,EP-PCM exhibited negligible leakage after 30 phase change cycles,with a maximum mass loss of≤2.23wt%.Additionally,after heating at 100℃for 8 h,the mass loss of EP PCM was only 1.64%.This study successfully addressed the poor thermal stability and leakage issues of traditional PCMs by epoxy resin encapsulation,significantly improving the long-term cycling performance and high-temperature application reliability of the materials.It provided a novel solution for developing low-leakage phase change materials.

关 键 词：形状稳定相变材料 环氧树脂涂层 热物性 低泄漏 微观结构 

分 类 号：TB34[一般工业技术—材料科学与工程]