光固定型的十八烷相变材料制备及热性质  

Preparation and thermal properties of shape-stabilized phase change materials based on octadecane by light curing process

作　　者：李雪峰 关宏宇[1] 白宇峰 葛春华[1] 董久霄 张向东[1] LI Xuefeng;GUAN Hongyu;BAI Yufeng;GE Chunhua;DONG Jiuxiao;ZHANG Xiangdong(College of Chemistry,Liaoning University,Shenyang 110036,Liaoning,China)

机构地区：[1]辽宁大学化学院,辽宁沈阳110036

出　　处：《精细化工》2021年第3期532-538,共7页Fine Chemicals

基　　金：辽宁省教育厅科学研究项目(LFW201901、LJC201916)。

摘　　要：以新戊二醇二甲基丙烯酸酯(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(ODE),从而解决ODE的泄漏问题。用高导热氮化硼(BN)作为导热填料,成功制备一种导热性良好并且形状稳定的ODE/NPGDMA/BN复合相变材料。通过FTIR、XRD、SEM、TGA和EDS对材料的结构、形貌、稳定性和元素分布状态进行了表征。结果表明,制备的复合相变材料具有较好的形状稳定性和热稳定性,在高于ODE的相变温度(28℃)时,没有发生形状变化;在100℃前复合材料没有发生质量损失;并且ODE/NPGDMA/BN复合相变材料具有较大的潜热(103.9 J/g)。当BN的添加量为5%(以ODE和NPGDMA的总质量计,且两者质量比为1∶1)时,复合材料的导热率比纯ODE提高了49.6%。A polymer with 3D network structure was prepared by light curing process using neopentyl glycol dimethacrylate(NPGDMA)as monomer,which can effectively wrap n-octadecane(ODE)to solve the leakage of octadecane.Subsequently,an ODE/NPGDMA/BN composite phase change material with good thermal conductivity and shape stability was successfully obtained using high thermal conductivity boron nitride(BN)as thermally conductive filler.The structure,morphology and element distribution state of the material were characterized by FTIR,XRD,SEM,TGA and EDS.The results showed that the prepared composite phase change material had good shape stability and thermal stability.It had no shape change at a phase change temperature higher than the ODE(28℃)and no mass loss before 100℃.Furthermore,the ODE/NPGDMA/BN composite phase change material possessed a large latent heat(103.9 J/g).When the additive amount of BN was 5%(based on the total mass of ODE and NPGDMA,the mass ratio of ODE to NPGDMA was 1∶1),the thermal conductivity of the prepared composite phase change material was increased by about 49.6%compared with that of pure ODE.

关 键 词：相变材料 十八烷 形状稳定性 光固化 热能储存 

分 类 号：TK02[动力工程及工程热物理] TB34[一般工业技术—材料科学与工程]