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用纤维素辅助石墨烯分散制备热导率增强的微缩相变材料,用于织品的热调节

Fanfan Meng^1,2, Xiaopeng Li², Min Zhang²

¹College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, China.

|December 17, 2024

概括

纤维素纳米纤维 (CNFs) 在微封装相变材料 (MPCMs) 中改善了石墨烯纳米片 (GNs) 的分散. 这提高了导热性和化热量,从而改善了热调节织品.

科学领域:

材料科学材料科学材料科学
纳米技术纳米技术
织工程织工程织工程

背景情况:

微封装相变材料 (MPCM) 的热导率有限.
石墨烯纳米板 (GNs) 可以增强热性能,但倾向于聚合.
有效分散GNs对于提高MPCM性能至关重要.

研究的目的:

为了提高MPCM的导热性.
使用纤维素纳米纤维开发一种有效的石墨烯纳米片分散的策略.
评估修改后的MPCMs的热,机械和潜在的织应用.

主要方法:

使用石墨烯纳米片 (GNs) 制备MPCM,辅助纤维素纳米纤维 (CNF).
使用SEM,FTIR和XRD对形态和结构的表征.
通过DSC,TG和导热测试对热性能进行评估.
使用纳米缩来评估机械性能.

主要成果:

通过范德瓦尔斯相互作用,CNF有效地阻止了GN聚合.
含有10%重量GN的MPCM显示融度为187.2J/g.
增强的导热率达到了1.214W/m·K.
准备好的MPCM-GNs表现出良好的热稳定性和出色的机械性能.

结论:

CNF辅助的GN分散是一种有效的策略,可以提高MPCM的导热性.
开发的MPCM-GN具有出色的热和机械性能.
MPCMs-GNs/织品显示出适用于舒适度热调节的应用潜力.

关键词:

在MPCM中,MPCM是MPCM.纤维素纤维素的使用方法分散的分散性分散.石墨烯是一种石墨烯.织品织品织品织品导热率导热率导热率导热率导热率导热率

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