Abstract
Herein, polymer-based thermal insulating composites are fabricated using pyrolyzed cellulose nanofiber (p-CNF) and carbon fiber (CF) in order to overcome the existing limitations of organic-based thermal resistance materials. The p-CNF is prepared by iodine treatment and calcination. The pyrolyzed CNF/CF composites are then fabricated via the freeze casting of two-dimensional (2D) CFs to obtain a low thermal conductivity of 0.058 W/mK, along with a high thermal stability, high tensile stress. Therefore, the p-CNF/CF composite provides an efficient thermal insulation performance via low thermal conductivity along with a high thermal degradation temperature, thereby demonstrating the potential for the development of thermal resistance materials.
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