乳液模板法制备芳纶纳米纤维/碳纳米管基相变储能纸及其性能研究

Preparation and Performance of Aramid Nanofiber/Carbon Nanotube-based Phase Change Energy Storage Paper via Emulsion Template Method

关键词:  相变材料  芳纶纳米纤维  碳纳米管  Pickering乳液模板法

Key Words:phase change material  aramid nanofiber  carbon nanotube  Pickering emulsion template method

摘要:以相变材料十六醇为芯材，芳纶纳米纤维/碳纳米管为壳层，通过Pickering乳液模板法制备相变微胶囊，进一步将微胶囊脱水、干燥，得到十六醇/芳纶纳米纤维/碳纳米管相变储能纸，并对相变储能纸的储热能力、结构和稳定性进行了研究。结果表明，相变储能纸具有优异的力学性能、热稳定性、定形相变效果和高相变热焓，优化条件下十六醇包覆量和相变吸热焓分别可达66.82%和128.00 J/g。碳纳米管的加入显著提升了相变储能纸的导热性，并赋予其光热吸收和电热转换性能。

Abstract:Taking the phase change material （hexadecanol） as core with aramid nanofibers/carbon nanotube as shell， the hexadecanol-loaded microcapsules were encapsulated by Pickering emulsion template method. The microcapsules were further dehydrated and dried to obtain hexadecanol/aramid nanofibers/carbon nanotubes phase change energy storage paper. The heat storage capacity， structure and stability of phase change energy storage paper were also investigated. It was demonstrated that phase change energy storage paper had excellent mechanical properties， thermal resistance， shape stability and high phase change enthalpy. Under the optimized conditions， the phase change energy storage paper with hexadecanol core content of 66.82% and heat absorption enthalpy of 128.00 J/g was obtained. Noteworthily， carbon nanotube significantly improved the thermal conductivity of phase change energy storage paper， and endowed it with photothermal and electrothermal effects.