丝瓜络纤维基相变复合材料的结构调控及热性能  

Structure Control and Thermal Properties of Phase Change Composites Supported by Towel Gourd Fibers

作　　者：何红飞 郭琛龙 宋秀萍 徐昂 蔡以兵[1] Hongfei He;Chenlong Guo;Xiuping Song;Ang Xu;Yibing Cai(Key Laboratory of Eco-Textiles of the Ministry of Education,Jiangnan University,Wuxi 214122,China)

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：《高分子材料科学与工程》2022年第4期159-164,173,共7页Polymer Materials Science & Engineering

基　　金：江苏省第六期“333高层次人才培养工程”项目((2022)3-16-216);江苏省大学生创新创业训练计划重点项目(2021045Z,202110295004)。

摘　　要：以低成本、环境友好且具有优异三维网状多孔结构的丝瓜络(TG)纤维作为支撑骨架,聚乙二醇(PEG)作为相变材料,结合物理吸附和聚氨酯(PU)膜封装技术制备了TG@HPEG@PU相变复合材料(PCCs),并对其形貌结构、调温性能、热能存储性能和热稳定性等进行了测试分析。结果表明,TG纤维具有高PEG吸附率(~82%),PU膜封装解决了PEG易泄漏性能。红外热像仪分析表明,TG@HPEG@PU具有优异的热管理能力,归因于其温度变化的延迟响应。差示扫描量热仪分析显示,TG@HPEG@PU的熔融/结晶焓分别为186.4 J/g和176.1 J/g,呈现优异的储热能力。热重分析显示,TG@HPEG@PU在中低温范围内具有良好的热稳定性能。该复合材料有望在建筑节能、热能管理和热红外隐身等领域得到广泛应用。With low cost,environment friendly and excellent three-dimensional reticular porous structure of towel gourd(TG)fibers as support material,polyethylene glycol(PEG)as phase change matrix,the TG@HPEG@PU phase change composites(PCCs)were fabricated by combining with physical adsorption and polyurethane(PU)film packaging technology.The morphological structure,as well as the properties of temperature regulation,thermal energy storage and thermal stability,of the fabricated PCCs were tested and analyzed.The results show that the TG fibers have a high PEG adsorption rate(~82%),and the PU film packaging solves the leakage of PEG.Infrared thermal images show that TG@HPEG@PU has the excellent thermal energy management ability,due to the delay response to temperature change.Differential scanning calorimeter results indicate that the melting/crystallization enthalpies of TG@HPEG@PU are respectively 186.4 J/g and 176.1 J/g,demonstrating superior heat storage ability.Thermogravimetric analysis show that TG@HPEG@PU has the good thermal stability in medium and low temperature range.It is expected to be widely used in building energy conservation,thermal energy management and thermal infrared stealth,etc.

关 键 词：聚乙二醇 丝瓜络 聚氨酯膜 热性能 储热 

分 类 号：TB34[一般工业技术—材料科学与工程]