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The properties of heat-resistant polymer fibers (Arimid, PFBT) and samples of organoplastics based on them have been investigated. It has been established that polyimide and polybenzazole fibers can be used as a reinforcing filler to create organoplastics at operating temperatures up to 350‒400 °C. The level of retention of the elastic modulus in bending of organoplastics based on PFBT fiber and IP-5 heterocyclic binder is 90 %. Heat-resistant organoplastics are promising for use in the aerospace industry and mechanical engineering.

The article provides the analysis of the scientific and technical literature and the effectiveness of the use of organoplastics in aircraft structures as screens and coatings that provide protection of carbon parts from damage caused by shock and erosion. The paper examined the mechanical properties and the nature of impact fracture of carbon fiber-reinforced plastics samples without a cladding layer. It is shown that it is possible to increase the specific impact strength in bending by 22 % due to cladding of CFRP, and to reduce the area of damage by 30 % upon impact with a kinetic energy of 30 J.

The damping characteristics of hybrid layered materials of the class «aluminum–organoplastics» and «titanium–organoplastics» based on metal sheets and layers of aramid organoplastics are studied. It is shown that the level of damping properties of hybrid layered materials is higher than that of the initial alloys and depends on the volume content of organoplastics, the location of organoplastics layers relative to metal layers, as well as on the reinforcement scheme. Hybrid layered materials are promising materials for the manufacture of high-speed aircraft structures operating under high vibroacoustic loads.

This paper studies a polymer composite material - a unidirectional organoplastic based on Rusar-NT aramid fiber and a melt epoxy-polysulfone binder. Organoplastic has the following mechanical properties: tensile strength 2060 MPa, Young's modulus 101 GPa. The microstructure of the fiber and the polymer matrix in the organoplastic samples was studied before and after tensile tests. The features of the formation of the binder structure depending on the packing density of the fibers in organoplastics have been determined. The nature of the destruction of fibers and polymer matrix caused by the uniaxial tension has been studied.