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      Development of high-insulating materials with aerogel for protective clothing applications – an overview

      1 , 1 , 1 , 1
      International Journal of Materials Research
      Walter de Gruyter GmbH

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          Abstract

          Aerogels are ultra-light solids with extremely low thermal conductivity (even lower than air), thanks to which they have a huge potential in a wide range of applications. The purpose of this publication is to present the state-of-the art knowledge of the possibility of using aerogels to increase the thermal insulation properties of clothing materials intended for use in both cold and hot environments. Various methods of aerogels application to textile materials (non-woven, woven and knitted fabrics) are discussed, indicating their advantages and limitations. Numerous research studies confirm that aerogels significantly improve the thermal insulation properties of materials, but due to their delicate and brittle structure and their tendency to dusting, their application still poses considerable problems.

          Most cited references38

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          Silica Aerogel: Synthesis and Applications

          Silica aerogels have drawn a lot of interest both in science and technology because of their low bulk density (up to 95% of their volume is air), hydrophobicity, low thermal conductivity, high surface area, and optical transparency. Aerogels are synthesized from molecular precursors by sol-gel processing. Special drying techniques must be applied to replace the pore liquid with air while maintaining the solid network. Supercritical drying is most common; however, recently developed methods allow removal of the liquid at atmospheric pressure after chemical modification of the inner surface of the gels, leaving only a porous silica network filled with air. Therefore, by considering the surprising properties of aerogels, the present review addresses synthesis of silica aerogels by the sol-gel method, as well as drying techniques and applications in current industrial development and scientific research.
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            Aerogels Handbook

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              Aerogels as Promising Thermal Insulating Materials: An Overview

              Aerogels are solids with high porosity (<100 nm) and hence possess extremely low density ( ∼ 0.003 g/cm 3 ) and very low conductivity ( ∼ 10 mW/mK). In recent years, aerogels have attracted more and more attention due to their surprising properties and their existing and potential applications in wide range of technological areas. An overview of aerogels and their applications as the building envelope components and respective improvements from an energy efficiency perspective including performance is given here. This overview covers thermal insulation properties of aerogels and studies regarding structural features which will be helpful in buildings envelope. The improvements of thermal insulation systems have future prospects of large savings in primary energy consumption. It can be concluded that aerogels have great potential in a wide range of applications as energy efficient insulation, windows, acoustics, and so forth.
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                Author and article information

                Journal
                International Journal of Materials Research
                Walter de Gruyter GmbH
                2195-8556
                February 19 2021
                February 19 2021
                February 01 2021
                February 19 2021
                February 19 2021
                February 01 2021
                : 112
                : 2
                : 164-172
                Affiliations
                [1 ]Department of Personal Protective Equipment, Central Institute for Labour Protection – National Research Institute , Lodz , Poland
                Article
                10.1515/ijmr-2020-8042
                e6021979-be19-468b-abc2-5c27412ecf3d
                © 2021
                History

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