首页|生物炭/聚乙二醇复合相变材料的制备及其性能研究

生物炭/聚乙二醇复合相变材料的制备及其性能研究

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利用农业废弃物玉米秸秆作为前驱体,经过高温煅烧、KOH刻蚀后获得比表面积较大的多孔生物炭(K-BC),再将一定比例的生物炭与聚乙二醇(PEG)于 60℃真空浸渍,得到复合相变材料(C-PCMs).利用比表面积及孔径分析仪(BET)、粉末X射线衍射仪(XRD)、扫描电子显微镜(SEM)、红外光谱仪(FTIR)和热重-差示扫描量热仪(TG-DSC)等对复合相变材料结构、储热性能、导电性及其稳定性进行测试表征.同时利用红外热成像技术对复合相变材料的光热、电热转换性能进行了研究.结果表明,当K-BC与PEG的质量比为1∶5时,复合相变材料的光热电热转换性能最佳.
Study on preparation and properties of biochar-polyethylene glycol-based composite phase change materials
Herein,corn stalk,a typical agricultural solid waste,was employed as the precursors to prepared porous biochar with larger specific surface area via a high temperature calcination and KOH etching.Thereafter,polyethylene glycol was vacuum-impregnated into K-BC skeletons with a certain proportion in an oven at 60℃ to fabricated composite phase change materials(c-PCMs).Various testing methods,including specific surface area and pore size analyzer(BET),powder X-ray diffraction(XRD),scanning electron microscope(SEM),infrared spectrometer(FTIR)and thermogravimetric-differential scanning calorimeter(TG-DSC)were carried out to characterize the structure of the c-PCMs.In addition,the heat storage performance,electrical conductivity and stability of the composite phase change material have been investigated too.Especially,infrared thermal camera was used to monitor the photo-thermal and electric-thermal conversion performance of the c-PCMs.The results show that the c-PCMs with the mass ratio of K-BC to PEG is 1∶5,possess extraordinary ability of photo-thermal and electric-thermal conversion.

biocharpolyethylene glycolcomposite phase change materialenergy conversionheat storage performance

张永文、杨郁、杨倩倩、李艳安、禹兴海

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河西学院 柔性复合材料应用基础研究所,甘肃 张掖 734000

河西学院 化学化工学院,甘肃 张掖 734000

河西学院 甘肃省河西走廊特色资源利用省级重点实验室,甘肃 张掖 734000

生物炭 聚乙二醇 复合相变材料 能量转换 储热性能

河西学院第十三批大学生科技创新项目甘肃省高等学校教师创新基金大学生创新创业训练计划项目大学生创新创业训练计划项目甘肃省自然科学基金甘肃省河西走廊特色资源利用省级重点实验室面上项目

1262023B-16420221074005820231074001623JRRG0010XZ2309

2024

10.16247/j.cnki.23-1171/tq.20240606

化学工程师
黑龙江省化工研究院

化学工程师

CSTPCD
影响因子：0.243
ISSN：1002-1124
年,卷(期)：2024.38(6)