木质衍生SiC基定型复合相变储热材料的制备及储热稳定性研究  

Study on the Preparation and Thermal Storage Stability of Wood-Derived SiC-Based Composite Phase Change Heat Storage Materials

作　　者：裴天宇 徐照芸 武金龙[1] 何炼杰 PEI Tianyu;XU Zhaoyun;WU Jinlong;HE Lianjie(School of Material Science and Engineering,North Minzu University,Yinchuan 750021,China)

机构地区：[1]北方民族大学材料科学与工程学院,银川750021

出　　处：《中国陶瓷》2025年第2期17-23,共7页China Ceramics

基　　金：宁夏第六批青年科技人才托举工程(TJGC2021109);宁夏自治区重点研发计划(2022BFE01003)。

摘　　要：以市售榉木及工业晶体硅片切割废料为原料,采用液相渗硅工艺成功制备了气孔率为51.4%且遗传榉木孔胞结构的木材陶瓷。分别以石蜡和聚乙二醇为相变材料,成功制备碳化硅/石蜡复合相变材料和碳化硅/聚乙二醇复合相变材料。对复合相变材料储热稳定性进行表征,结果表明SiC/PW复合相变材料具有56.51 J/g的相变潜热,导热系数为56.217 W/(m·K);SiC/PEG复合相变材料具有34.79 J/g的相变潜热,导热系数为53.216 W/(m·K),具备良好的储热性能和导热系数,解决单一石蜡或聚乙二醇作为相变材料热传导性差的问题。Wood ceramics with a porosity of 51.4%and inherited beech wood cellular structure were successfully prepared by the liquid phase silicon infiltration process using commercially available beech wood and industrial crystal silicon wafer cutting waste as raw materials.Silicon carbide/paraffin composite phase change materials and silicon carbide/polyethylene glycol composite phase change materials were successfully prepared by using paraffin and polyethylene glycol as phase change materials,respectively.The thermal storage stability was characterized.The results showed that the SiC/PW composite phase change materials had a latent heat of phase change of 56.51 J/g and a thermal conductivity of 56.217 W/(m·K).The SiC/PEG composite phase change material has a phase change latent heat of 34.79 J/g and a thermal conductivity of 53.216 W/(m·K).These materials exhibit good thermal storage performance and thermal conductivity,which provides a solution to the problem of poor thermal conductivity of single paraffin or polyethylene glycol as phase change material.

关 键 词：木材陶瓷 SIC 复合相变 储热稳定性 

分 类 号：TQ174.75[化学工程—陶瓷工业]