文章摘要
李雪峰,关宏宇,白宇峰,葛春华,董久霄,张向东.光固定形的十八烷相变材料制备及热性质研究[J].精细化工,2021,38(2):
光固定形的十八烷相变材料制备及热性质研究
Preparation and thermal properties of shape-stabilized phase change materials based on octadecane by light curing
投稿时间:2020-07-09  修订日期:2020-10-10
DOI:
中文关键词: 相变材料  十八烷  形状稳定性  光固化  热能储存
英文关键词: phase change material  n-octadecane  shape stability  light curing  thermal energy storage
基金项目:辽宁省教育厅科学研究项目
作者单位E-mail
李雪峰 辽宁大学 chhge@lnu.edu.cn 
关宏宇 辽宁大学  
白宇峰 辽宁大学  
葛春华 辽宁大学 chhge@lnu.edu.cn 
董久霄 辽宁大学  
张向东 辽宁大学  
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中文摘要:
      该文以新戊二醇二甲基丙烯酸酯(Neopentyl glycol dimethacrylate,NPGDMA)为单体,利用光固化反应制得具有3D网络结构的聚合物 ,这种结构可以有效包裹十八烷(n-octadecane,ODE),从而解决十八烷的泄漏问题。用高导热氮化硼(BN)作为导热填料,成功制备了一种导热性良好并且形状稳定的ODE/NPGDMA/BN复合相变材料。当ODE和NPGDMA的质量比为1:1时,具有较低的泄露率和较大的潜热。因此,选择ODE含量为50%的配方进行后续实验。通过FTIR、XRD、SEM和EDS对材料的结构、形貌和元素分布状态进行了表征。通过热台测试表明制备的复合相变材料在高于ODE的相变温度(28 ℃)时,没有发生形状变化,说明具有较好的形状稳定性;通过TGA测试可以看出在100 ℃之前没有发生重量损失,说明复合相变材料具有较好的热稳定性;通过DSC测试说明ODE/NPGDMA/BN复合相变材料具有较大的潜热 (103.9 J/g)。复合材料中BN的添加量为5%时,其导热率比纯ODE增加约49.6%
英文摘要:
      This article uses NPGDMA as the monomer, and uses light curing technology to polymerize the monomer to form a polymer into a 3D network structure. This structure can effectively wrap the ODE to solve the leakage of octadecane. By using high thermal conductivity BN as a thermally conductive filler, an ODE/NPGDMA/BN composite PCM with good thermal conductivity and shape stability was successfully prepared. When the mass ratio of ODE and NPGDMA was 1:1, it had a lower leakage rate and a larger latent heat. Therefore, a formula with an ODE content of 50% was selected for subsequent experiments. The structure, morphology and element distribution state were characterized by FTIR, XRD, SEM and EDS. The hot stage test showed that the prepared composite PCM had no shape change when it is higher than the ODE phase transition temperature (28 ℃), indicating that it has good shape stability; through TGA test, it can be seen that there was no weight loss before 100 ℃, indicated that the composite PCM had good thermal stability; The DSC test showed that the ODE/NPGDMA/BN composite PCM had a large latent heat (103.9 J/g). When the content of BN in the composite PCM was 5%, its thermal conductivity was increased by about 49.6% compared with pure ODE.
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