Electrospinning of Fibers from Polyaminonaphthoyleneimide Solutions to Prepare Superheat-Resistant Nonwoven Fibrous Materials

For the first time, a laboratory technology has been developed for preparing poly(naphthoylene benzimidazole) incombustible nonwoven material by electrospinning from a solution of the precursor polymer, polyaminonaphthoyleneimide, through the thermal transformation stage. The influence of polymer concentration in solution and the voltage applied to the injection nozzle and collecting device on the properties of the resulting material was studied. The morphology of the new material was investigated, its mechanical, thermal, and thermomechanical characteristics were examined, and the limiting oxygen index was assessed. The optimal key operational parameters for electrospinning were determined, which constitute the essence of the laboratory technology for producing the new material.