|本期目录/Table of Contents|

[1]卢静,孙龙飞,赵寒飞,等.石蜡/TOCNF相变气凝胶的制备及结构性能调控[J].浙江理工大学学报,2024,51-52(自科六):777-786.
 LU Jing,SUN Longfei,ZHAO Hanfei,et al.Preparation and structure performance regulation of  paraffins/TOCNF phase change aerogels[J].Journal of Zhejiang Sci-Tech University,2024,51-52(自科六):777-786.
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石蜡/TOCNF相变气凝胶的制备及结构性能调控()
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浙江理工大学学报[ISSN:1673-3851/CN:33-1338/TS]

卷:
第51-52卷
期数:
2024年自科第六期
页码:
777-786
栏目:
出版日期:
2024-11-10

文章信息/Info

Title:
Preparation and structure performance regulation of  paraffins/TOCNF phase change aerogels
作者:
卢静孙龙飞赵寒飞魏璐琳刘琳
浙江理工大学材料科学与工程学院,杭州 310018
Author(s):
LU Jing SUN Longfei ZHAO Hanfei WEI Lulin LIU Lin
School of Materials Science & Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
关键词:
纤维素纳米纤维Pickering乳液乳液稳定性相变材料气凝胶
分类号:
TB332
文献标志码:
A
摘要:
为了防止固液相变材料在相变过程中的液体泄漏,提高相变材料的稳定性,减少团聚,增加传热表面积,以TEMPO氧化纤维素纳米纤维(TEMPO oxidized cellulose nanofibers,TOCNF)作为稳定剂,以石蜡作为油相,经过高速分散得到石蜡/TOCNF Pickering乳液(paraffins/TOCNF Pickering emulsion,PTPE),并将其与作为气凝胶主体的TOCNF混合,通过冷冻干燥制备石蜡/TOCNF相变气凝胶(paraffins/TOCNF phase change aerogels, PTA );分析TOCNF质量分数、溶液pH值对Pickering乳液尺寸形貌及稳定性的影响,探讨不同Pickering乳液添加量下所得PTA的形貌结构、储热容量、热稳定性和力学性能等。结果表明:当稳定剂TOCNF质量分数为0.5%、pH值为7~11时,所得Pickering乳液粒径较小且尺寸均一,平均粒径分布在8.3 ~14.8 μm,具有优异的稳定性;经乳化分散后,石蜡颗粒均匀镶嵌在PTA孔壁表面,无液体泄漏。所得PTA潜热值可高达225.8 J/g,并具有良好的机械性能。该文以TOCNF作为乳化剂和气凝胶的骨架,通过Pickering乳液模板法制备的具有三维多孔网络结构的相变气凝胶,一定程度上解决了目前纤维素复合相变气凝胶存在的液体泄漏、潜热低与机械强度差等难题。

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期: 2024-03-27
网络出版日期2024-09-13
基金项目: 国家自然科学基金项目(22375181);浙江省重点研发计划项目(2022C03093)
作者简介: 卢静(2000—),女,湖南涟源人,硕士研究生,主要从事纤维素的功能化应用方面的研究
通信作者: 刘琳,E-mail:linliu@zstu.edu.cn
更新日期/Last Update: 2024-11-14