Mass Production of Polymer-Derived Ceramic Nanofibers through Solution Blow Spinning: Implications for Flexible Thermal Insulation and Protection

Abstract

Despite their outstanding properties, commercial massive production of polymer-derived ceramic nanofibers with high performances still faces challenging issues related to material synthesis and spinning processes. Herein, solution blow spinning technology was employed to improve the spinning ratio of nanofibers. Spinnable solutions were prepared with different precursors, polysiloxane, and polycarbosilane. Notably, these organic precursor solutions can be blow-spun into nanofibers with elevated rates, ranging from 10 to 50 mL•h −1 . After being pyrolyzed, the organic precursor nanofibers can be pyrolyzed to form SiOC or SiC nanofibers. Simultaneously, employing a needlepunching technique for structural rearrangement allowed organic precursor sponges to be converted into blankets with customized thicknesses and shapes. The above strategy enabled the production of SiOC and SiC nanofiber products characterized by exceptional thermal insulation [0.028/0.026 (W•(m•K) −1 )], high-temperature resistance (1300 °C), and compression resistance properties (ε = 60%). It can be widely used in aerospace, energy, and electronic technology and other fields.

Comfortable, Anisotropic-Elastic, and Multilayered Fibrous Bandages with Enhanced Directional Tensile Performance

“…In addition, elastic polymers often exhibit poor liquid wetting capacity and wicking properties, making it challenging to apply them directly to the skin for purposes such as pressure garments and bandages. In the second strategy, elastic materials, including films, knitted fabrics, and nonwovens, are composited with other inelastic fabrics via thermal bonding, needle punching, , and spun lace . Among them, during the needle-punching process, fibers are mechanically entangled without any hazardous chemical, instead, they bond along the thickness direction under the physical force exerted by the needles .…”