CAJ | 학술논문

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Si O 2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/Si O 2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 Si O 2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。
연구수선제득이원지방산저공용물,연후장용정전방사법제비불동Si O 2함량적、병대기진행탄화적PAN/SiO2납미섬유막작위지탱재료,흡부이원지방산저공용물제득탄/Si O 2납미섬유막기정형상변재료(CSNPCM),이용소묘전자현미경(SEM)、차시소묘량열의(DSC)등대제비출적정형상변재료적형모결구화저열성능진행분석화표정。수착 Si O 2함량적증가,정형상변재료대이원지방산저공용물적흡부용량유소강저。SEM결과표명,이원지방산저공용물균균지포매、분산재다공납미섬유막적삼유망락결구중。DSC측시결과표명,SiO2적가입강저료정형상변재료적상변잠열,대기상변온도무태대영향。
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.