赤藓糖醇基相变复合纤维制备及热性能

被引：9

作者：

车海山

陈迁乔

钟秦

何思

机构：

[1] 南京理工大学化工学院

来源：

储能科学与技术 | 2017年 / 6卷 / 04期

关键词：

赤藓糖醇; 共晶; 相变复合纤维; 储能; 石墨烯; 导热系数;

D O I：

暂无

中图分类号：

TB34 [功能材料];

学科分类号：

080906 [电磁信息功能材料与结构];

摘要：

开发了相变温度为98.63℃的赤藓糖醇/硫脲共晶混合物,采用静电纺丝法制备赤藓糖醇、赤藓糖醇/硫脲和赤藓糖醇/木糖醇与聚乙烯醇的相变复合纤维,研究了石墨烯作为导热增强材料对复合材料形貌及热性能的影响。研究结果显示,复合材料各物质之间是物理结合,为表面光滑的圆柱状,直径为0.95～1.12μm,并随石墨烯含量的增加而减小。3种复合材料相变焓分别为241.6 J/g、191.4 J/g和192.7 J/g。10次热循环后复合纤维仍能保持良好的形貌,焓值损失率分别为1.2%、0.5%和0.5%;添加10%(质量分数)石墨烯后导热系数分别提高了258%、312%和260%。研究结果表明,赤藓糖醇及其共晶相变复合材料不仅具有很好的化学和形貌稳定性,还表现出优异的热性能,在120～80℃储能领域中有着巨大的应用前景。

引用

页码：644 / 654

页数：11

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