|本期目录/Table of Contents|

[1]高雷,李超,赵惠瑩,等.基于聚乙二醇(PEG)胶束模板法的SiO 2气凝胶微球制备及性能分析[J].浙江理工大学学报,2024,51-52(自科五):627-638.
 GAO Lei,LI Chao,ZHAO Huiying,et al.Preparation and property analysis of SiO 2 aerogel microspheres by polyethylene glycol (PEG) micelle template method[J].Journal of Zhejiang Sci-Tech University,2024,51-52(自科五):627-638.
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基于聚乙二醇(PEG)胶束模板法的SiO 2气凝胶微球制备及性能分析()
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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年自科第五期
页码:
627-638
栏目:
出版日期:
2024-09-20

文章信息/Info

Title:
Preparation and property analysis of SiO 2 aerogel microspheres by polyethylene glycol (PEG) micelle template method
作者:
高雷李超赵惠瑩吴明华王懿佳
1.浙江理工大学,a纺织科学与工程学院(国际丝绸学院);b先进纺织材料与制备技术教育部重点实验室;c生态染整技术教育部工程研究中心;d绿色低碳染整技术浙江省工程研究中心,杭州 310018;2.浙江理工大学桐乡研究院,浙江嘉兴 314500
Author(s):
GAO Lei LI Chao ZHAO Huiying WU Minghua WANG Yijia
1a College of Textile Science and Engineering (International Institute of Silk
关键词:
二氧化硅气凝胶微球聚乙二醇胶束模板法
分类号:
TS195-6
文献标志码:
A
摘要:
为提高二氧化硅(SiO 2)气凝胶微球的形貌规整度和疏水性,以甲基三甲氧基硅烷(MTMS)为前驱体,聚乙二醇(PEG)为软模板,水和乙醇为溶剂,氨水为催化剂和PEG亲疏水调节剂,采用碱催化法合成纳米SiO 2溶胶分散液,经熟化、烘干和煅烧得到疏水SiO 2气凝胶微球。探究PEG分子量和用量、氨水用量、MTMS用量和醇水体积比对微球形貌和导热系数的影响,优化制备工艺;采用扫描电子显微镜、热常数分析仪、比表面积及孔径分析仪以及视频水接触角测量仪等对微球的性能进行分析。结果表明:PEG可在醇水溶液中形成胶束,增溶MTMS,使MTMS的水解、缩合在胶束中进行,防止微球黏连。当PEG分子量为2000 Da,PEG用量为5.0 g,氨水用量为4.5 mL,MTMS用量为5.0 mL,醇水体积比为7∶3时,所制备的SiO 2气凝胶微球形貌最佳,平均粒径约为1 μm,相互黏连较少,比表面积达432.817 m 2/g,孔体积为0.281 cm 3/g,平均孔径为2.5 nm,水接触角为137.0°±0.81°,导热系数为0.0380 W/(m·K)。该研究可为疏水性SiO 2气凝胶微球的制备提供一定的技术参考。

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期: 2024-01-09
网络出版日期:2024-04-11
基金项目: 浙江理工大学桐乡研究院开放基金项目(TYY202304)
作者简介: 高雷 (2000—),男,河南许昌人,硕士研究生,主要从事纺织品功能整理方面的研究
通信作者: 王懿佳,E-mail:wangyijia@zstu.edu.cn
更新日期/Last Update: 2024-09-18