碳/SiO_2纳米纤维膜基定形相变材料的制备及性能  

Preparation and property of form-stable phase change materials based on C/SiO_2 nanofibrous mats

作　　者：刘盟盟[1] 孙桂岩[1] 刘倩[1] 蔡以兵[1] 

机构地区：[1]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》2014年第18期18063-18066,共4页Journal of Functional Materials

基　　金：国家高技术研究发展计划(863计划)资助项目(2012AA030313);国家自然科学基金资助项目(51006046);中国博士后科学基金资助项目(2014M560391);江南大学大学生创新训练计划资助项目(2013037)

摘　　要：研究首先制得二元脂肪酸低共熔物,然后将用静电纺丝法制备不同SiO2含量的、并对其进行炭化的PAN/SiO2纳米纤维膜作为支撑材料,吸附二元脂肪酸低共熔物制得碳/SiO2纳米纤维膜基定形相变材料(CSNPCM),利用扫描电子显微镜(SEM)、差示扫描量热仪(DSC)等对制备出的定形相变材料的形貌结构和储热性能进行分析和表征。随着SiO2含量的增加,定形相变材料对二元脂肪酸低共熔物的吸附容量有所降低。SEM结果表明,二元脂肪酸低共熔物均匀地包埋、分散在多孔纳米纤维膜的三维网络结构中。DSC测试结果表明,SiO2的加入降低了定形相变材料的相变潜热,对其相变温度无太大影响。Firstly,binary fatty acid eutectics were prepared by melt blending and ultrasonic dispersion technique in this research,then the PAN/SiO2 nanofibrous mats with different content of SiO2 prepared by using electro-spinning method,which after carbonization were taken as supporting materials.The form-stable phase change materials based on C/SiO2 nanofibrous mats (CSNPCM)were fabricated by adsorbing binary fatty acid eutec-tics.The structural morphologies and thermal energy storage properties of form-stable phase change materials were characterized by scanning electron microscope (SEM)and differential scanning calorimeter (DSC),respec-tively.With the increase of SiO2 ,the adsorption capacity of binary fatty acid eutectics in turn reduce.SEM re-sults show that binary fatty acid eutectics embeded and dispersed evenly in the three dimensional network struc-ture of porous nanofibrous mats.DSC results show that the addition of SiO2 decrease the phase change latent heat of form-stable phase change materials,whereas there are no appreciable changes on the phase transition temperatures.

关 键 词：二元脂肪酸低共熔物 静电纺丝 定形相变材料 物理吸附 

分 类 号：TB332[一般工业技术—材料科学与工程]