Bidirectional anisotropic polyimide/bacterial cellulose aerogels by freeze-drying for super-thermal insulation

Superhydrophobic polyvinylidene fluoride/polyimide nanofiber composite aerogels for thermal insulation under extremely humid and hot environment

“…Aerogels are porous materials with nanostructures and exhibit promising potential for heat management due to their high porosity, low density, large specific surface area and low thermal conductivity [10][11][12][13][14]. In the past few decades, a variety of aerogel materials have been suc-cessfully prepared, including graphene [15][16][17], silica [18], carbon nanotubes [19,20] and synthetic polymers [21,22].…”

Facile preparation for gelatin/hydroxyethyl cellulose‐SiO2 composite aerogel with good mechanical strength, heat insulation, and water resistance

“…Aerogels are unique low density, three‐dimensional (3D) high porosity materials, which have wide utility including high quality insulators, refractory material, highly reactive catalyst carrier, and adsorption material 4–7 . The widespread use of classic inorganic aerogels represented by silica aerogel is limited due to the complicated preparation process and weak mechanical properties 8,9 . Until now, the commercialization of silica aerogels has been restricted to granulate or aerogel blankets (currently, fibers reinforced composites).…”

Graphene‐Based Ultralight Compartmentalized Isotropic Foams with an Extremely Low Thermal Conductivity of 5.75 mW m−1 K−1

“…Subsequently, several studies have investigated advanced thermal insulating materials based on CCS foams aligned along a single direction. [16][17][18][19][20][21] However, these approaches have encountered several limitations in further improving the thermally insulating properties. First, the lack of capability of controlling the cell dimension and internal wall thickness results in an inevitable increase of solid conduction.…”