磁控溅射法提高定型相变材料的储热和放热速率  

Improvement of thermal energy storage and retrieval rates of form-stable phase change materials by magnetron sputter

作　　者：柯惠珍[1] 李永贵[1] 王建刚[1] 袁小红[1] 陈东生[1] 魏取福[2] KE Huizhen LI Yonggui WANG Jiangang YUAN Xiaohong CHEN Dongsheng WEI Qufu(Fujian Engineering Research Center for Textile and Clothing, Faculty of Clothing and Design, Minjiang University, Fuzhou 350108, China Key Laboratory of Eco-Textiles of Ministry of Education, Jiangnan University, Wuxi 214122, China)

机构地区：[1]闽江学院服装与艺术工程学院福建省高校纺织服装工程研究中心,福州350108 [2]江南大学生态纺织教育部重点实验室,江苏无锡214122

出　　处：《功能材料》2017年第3期3163-3167,共5页Journal of Functional Materials

基　　金：江苏省六大高峰人才资助项目(2014-XCL001);福建省省属高校专项资助项目(JK2014042);福建省科技计划资助项目(2015H0030)

摘　　要：首先采用磁控溅射法在静电纺聚氨酯(PU)纤维膜表面沉积纳米银(Ag)导热金属薄膜,并将其作为支撑材料,通过物理吸附法吸附癸酸-月桂酸-肉豆蔻酸-棕榈酸四元低共熔物(CA-LA-MA-PA),制备出新型的CALA-MA-PA/PU/Ag定型相变复合纤维膜。EDX测试结果显示Ag纳米颗粒已经被成功地沉积到静电纺PU纤维膜上。SEM图像显示经过磁控溅射后静电纺PU纤维的直径明显增加,CA-LA-MA-PA四元低共熔物被均匀地吸附到PU和PU/Ag纤维膜的孔隙结构中。热分析结果表明CA-LA-MA-PA/PU/Ag定型相变复合纤维膜的融化温度和融化焓值分别为17℃和94.81kJ/kg。与CA-LA-MA-PA/PU定型相变复合纤维膜相比较,CALA-MA-PA/PU/Ag定型相变复合纤维膜的储热和放热时间分别缩短了约42%和24%。The Ag nanolayers with the higher thermal conductivity were coated on the surface of electrospun PU fiber membranes by magnetron sputter.The novel form-stable phase change composite fiber membranes were prepared by adsorbing the CA-LA-MA-PA quaternary fatty acid eutectic into electrospun PU and PU/Ag fiber membranes serving as supporting materials by physical adsorption method.EDX spectra suggests that the Ag nanoparticles are successfully covered on the surface of electrospun PU fiber membranes.SEM images illustrate that the average fiber diameter of electrospun PU fibers significantly increased after sputter coating.The CALA-MA-PA quaternary eutectics are uniformly dispersed into the porous network structure of electrospun PU and PU/Ag fiber membranes.DSC analyses indicate that the melting temperature and enthalpy of the CA-LAMA-PA/PU/Ag form-stable phase change composite fiber membranes are 17 ℃ and 94.81kJ/kg,respectively.The heat storage and release times of CA-LA-MA-PA/PU/Ag form-stable phase change composite fiber membranes are shortened by about 42% and 24% compared to those of the CA-LA-MA-PA/PU form-stable phase change composite fiber membranes.

关 键 词：定型相变材料 CA-LA-MA-PA四元低共熔物 聚氨酯 磁控溅射 储热和放热时间 

分 类 号：TQ342.94[化学工程—化纤工业]