PEGCF复合相变材料的制备、表征及热性能

发布时间：2018-04-25 16:51

  本文选题：聚乙二醇(PEG) + 泡沫碳(CF)　； 参考：《西北师范大学学报(自然科学版)》2017年03期

【摘要】：以泡沫碳(CF)为基底,不同分子量的聚乙二醇(PEG)为相变材料,采用物理共混法制备出一系列聚乙二醇/泡沫碳(PEG/CF)复合相变材料,利用红外光谱(FT-IR)、X射线衍射(XRD)、N2吸附(BET)、扫描电镜(SEM)、差示扫描量热(DSC)和热重分析(TGA)对制备的复合相变材料进行了表征分析和热性能研究.结果表明,PEG/CF复合相变材料的定形能力为90%,PEG与CF之间只存在简单的物理吸附作用,并没有发生化学变化生成新物质;PEG4000定形复合相变材料的相变焓最大(168.5J·g~(-1));所有制备的复合相变材料在220℃以下均具有良好的热稳定性.
[Abstract]:A series of polyethylene glycol / carbon foamed PEG / CFC composite phase change materials were prepared by physical blending method using carbon foamed carbon (CFC) as substrate and polyethylene glycol (PEG) with different molecular weight as phase change material. The composite phase change materials were characterized and characterized by FT-IR X-ray diffractometer (XRDX) N _ 2 adsorption, SEM, DSC and TGA). The thermal properties of the composite materials were investigated by thermogravimetric analysis (TGA) and scanning electron microscopy (SEM). The properties of the composite phase change materials were investigated by means of X-ray diffraction spectroscopy (FTIR), X-ray diffraction (XRD), X-ray diffraction (XRD) and X-ray diffraction (XRD). The results show that the setting ability of PEG / CF composite phase change material is 90% and there is only simple physical adsorption between PEG and CF. The maximum enthalpy of phase transition of PEG4000 composite phase change material is 168.5 J / g ~ (-1), and all the composite materials have good thermal stability below 220 鈩，

本文编号：1802166