Recent Advancements and Functional Applications of Aerogels

A special issue of Gels (ISSN 2310-2861). This special issue belongs to the section "Gel Processing and Engineering".

Deadline for manuscript submissions: 31 May 2026 | Viewed by 2182

Special Issue Editors


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Guest Editor
School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450001, China
Interests: aerogel; polymer; thermal management; flame retardant

Special Issue Information

Dear Colleagues,

Aerogel is composed of colloidal particles or polymer molecules that aggregate to form a porous network structure in pores, among which a highly dispersed solid material is filled with a gaseous dispersing medium. Due to its distinctive advantages, such as ultra-low density, high porosity, low thermal conductivity, and high specific surface area, aerogel is widely used in thermal insulation, sound insulation, electromagnetic shielding, and other fields.

Recent advances in aerogels—such as the development of wearable aerogels for personal thermal management, aerogels with controllable porous microstructures for super-thermal insulation under extreme environments, and radiative cooling aerogels for building energy saving—broaden their functional applications.

This Special Issue aims to provide an opportunity for researchers to contribute their most recent research and development in functional aerogels. Topics of interest include, but are not limited to, the following:

  • Aerogels for flame retardant;
  • Aerogels for thermal insulation;
  • Stimuli-responsive aerogels;
  • Additive manufacturing of aerogels;
  • Aerogels for solar-thermal regulatory cooling;
  • Aerogels for thermal energy storage;
  • Aerogels fiber;
  • Aerogels for catalysis.

Dr. Ye Tian
Dr. Qiaoran Zhang
Guest Editors

Manuscript Submission Information

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Keywords

  • aerogels
  • multifunctional applications
  • thermal insulation
  • stimuli-responsive
  • flame retardant
  • wearable aerogels

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Published Papers (1 paper)

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Review

29 pages, 11501 KB  
Review
Direct Ink Writing Additive Manufacturing of Polyimide Aerogels
by Bo Chen, Qiyang Jiang and Jianhu Jiang
Gels 2025, 11(12), 940; https://doi.org/10.3390/gels11120940 - 23 Nov 2025
Cited by 1 | Viewed by 1719
Abstract
Polyimide aerogels (PAs) are ideal for applications in thermal protection, lightweight electronics, and energy devices due to their excellent mechanical properties, ultra-low density, extremely low thermal conductivity, and high thermal-oxidative stability. Conventional PA manufacturing involves a sol–gel process followed by post-processing (drying and [...] Read more.
Polyimide aerogels (PAs) are ideal for applications in thermal protection, lightweight electronics, and energy devices due to their excellent mechanical properties, ultra-low density, extremely low thermal conductivity, and high thermal-oxidative stability. Conventional PA manufacturing involves a sol–gel process followed by post-processing (drying and imidization). However, PAs fabricated using this method are geometrically limited by the mold shape and are fragile, have poor sample machinability, and are prone to shrinkage and deformation. Direct ink writing (DIW) additive manufacturing (AM) overcomes these limitations of conventional manufacturing processes by extruding ink to construct architectural lattices with high dimensional fidelity, enabling the fabrication of complex, conformal, and multi-scale structures. DIW AM can produce PA components that are thermally and electrically stable, as well as geometric freedom, thus supporting high-precision and functional hierarchical design. This review provides the first overview of DIW AM of PAs. By summarizing printable ink formulations, printing parameters, drying routes and thermal/chemical imidization processes, as well as applications of printed samples, it comprehensively describes the current state of the art in DIW additive manufacturing of PAs and highlights key technical bottlenecks (printability vs. porosity trade-off, economic and environmental, etc.). It also outlines possible future research directions. Full article
(This article belongs to the Special Issue Recent Advancements and Functional Applications of Aerogels)
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