PI-SiO2 aerogel as a versatile high transparent material for photothermal cooperative management

Effectively insulating against excessive heat generated by sunlight while also avoiding harmful ultraviolet (UV) and maintaining suitable levels of visible light transparency is vital for minimizing energy consumption and optimizing sunlight utilization. To address the challenge of photothermal coll...

Full description

Saved in:
Bibliographic Details
Published in:Journal of alloys and compounds 2024-12, Vol.1009, p.176821, Article 176821
Main Authors: Shi, Baolu, Liu, Jia, Shi, Jinzhuo, Guo, Donghui, Jin, Runze, Zhou, Zihan, Chen, Yu, Xu, Baosheng, Zhou, Ning
Format: Article
Language:English
Subjects:
Highly transparent
PI-SiO2 aerogels
Temperature resistant
UV shield
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Effectively insulating against excessive heat generated by sunlight while also avoiding harmful ultraviolet (UV) and maintaining suitable levels of visible light transparency is vital for minimizing energy consumption and optimizing sunlight utilization. To address the challenge of photothermal collaborative management, the PI consisted of high fluorinated dianhydride and aliphatic diamine was used to effectively improve the performance of SiO2 aerogels. The resulting PI-SiO2 aerogels retain the characteristics of SiO2 aerogels, such as low density, high transparency between 82∼89 %, and excellent thermal insulation properties with an ultralow thermal conductivity range from 0.023 W/(m.K) to 0.028 W/(m.K). Meanwhile, the coarsened skeleton of aerogels can withstand the extreme temperature difference between −196 ℃ and 200 ℃ without brittle fracture and yellowing. In addition, PI-SiO2 aerogels exhibit the capability to absorb a significant proportion of UV light within the 200–400 nm, offering distinct advantages in transparent thermal insulation materials. The multifunctional PI-SiO2 aerogels can be used as candidate materials in the fields of architecture, automobile, electronics, solar energy and aerospace. •An effective method was utilized to prepare highly transparent aerogels.•The PI consisted of high fluorinated dianhydride and aliphatic diamine was selected to improve SiO2 gel skeleton.•Aerogels integrated high transparency, thermal insulation and UV-shielding properties.•Aerogels can be used in the temperature range of −196 °C to 200 °C.
ISSN:0925-8388
DOI:10.1016/j.jallcom.2024.176821