Methods for producing cellulose-based porous aerogel product and cellulose-based porous aerogel composition, and use

By hybridizing cellulose nanofibrils with phase change materials and additives, the method produces aerogels with enhanced thermal inertia and insulation properties, addressing the limitations of conventional cellulose-based aerogels.

WO2025219633A1 Publication Date: 2025-10-23AALTO UNIV FOUND
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Patent Information

Application Number
PCT/FI2024/050175
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-04-16
Publication Date
2025-10-23

AI Technical Summary

Technical Problem

Existing cellulose-based aerogels suffer from low thermal inertia and poor thermal dissipation, limiting their effectiveness in insulation applications, particularly in building and aerospace contexts, due to their lightweight nature.

Method used

A method involving the hybridization of cellulose nanofibrils with phase change materials (PCMs) and carbon-based or mineral agents to create a suspension mixture, which is then treated to form a porous aerogel product with reversible solid-to-gel transformations, enhancing thermal inertia and insulation properties.

Benefits of technology

The resulting aerogel product exhibits ultralow thermal conductivity, high thermal inertia, and leakage-proof thermal regulation, making it suitable for insulation and thermal management in various applications.

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Abstract

The application relates to a method for producing a cellulose-based porous aerogel product, in which cellulose nanofibrils and a phase change material are mixed to form a homogenous suspension mixture, a carbon-based and / or mineral agent is added to the suspension mixture, and the suspension mixture is treated to form the porous aerogel product comprising a three-dimensional shape. Further, the application relates to a method for producing a cellulose-based porous aerogel composition. Further, the application relates to a use of the method.
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