Fast synthesis of transparent and hydrophobic silica aerogels using polyethoxydisiloxane and methyltrimethoxysilane in one-step drying process

被引：3

作者：

Zhu, Xingqun ^{[1
,3
]}

Naz, Hina ^{[3
]}

Ali, Rai Nauman ^{[3
]}

Yang, Yongfei ^{[2
]}

Zheng, Zhou ^{[2
]}

Xiang, Bin ^{[1
,3
]}

Cui, Xudong ^{[1
,2
]}

机构：

[1] Quanzhou Normal Univ, Photon Technol Res & Dev Ctr, 398 Donghai Main St, Quanzhou 362000, Fujian, Peoples R China

[2] CAEP, Sichuan New Mat Res Ctr, Inst Chem Mat, Chengdu 610200, Sichuan, Peoples R China

[3] Univ Sci & Technol China, Synerget Innovat Ctr Quantum Informat & Quantum P, CAS Key Lab Mat Energy Convers, Dept Mat Sci & Engn, Hefei 230026, Anhui, Peoples R China

来源：

MATERIALS RESEARCH EXPRESS | 2018年 / 5卷 / 04期

关键词：

composites; sol-gel; aerogels; surface properties; optical propertie; SUPERCRITICAL EXTRACTION PROCESS; PHYSICAL-PROPERTIES; DENSITY; GEL; RADIATOR; MEDIA;

D O I：

10.1088/2053-1591/aab826

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have successfully synthesized the transparent and hydrophobic silica aerogels by a one-step drying process using appropriate amount of Polyethoxydisiloxane and methyltrimethoxysilane. With an introduction of modified rapid supercritical extraction technique, the synthesis process time was shortened down to one hour for a 4 L solution reaction. The observed transmittance of as-synthesized product is larger than 80% within the wavelength range of 500-1000 nm, and the contact angle is confirmed to be over 135 degrees. Our results provide a path way to the fast synthesis of hydrophobic and transparent aerogels in near future for window insulator applications.

引用

页数：12

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