Articles
The analysis of production and application of single-crystal fibers in high-temperature composite materials creation and high-temperature fiber optics was carried out. Features of properties of the whiskers as special case of single-crystal fibers were considered. Actual ways of receiving single-crystal fibers by the edge defined film fed growth method (EFG) and Laser-heated pedestal growth (LHPG) are shown. The received conclusions allow to formulate offers for receiving α-Аl2O3 single-crystal fibers.
In application to the conditions of «Buran» product service, with regard for its structural features a special technique was developed, corrosion tests of metallic materials (aluminum alloys, titanium alloy, steels ) were carried out and corrosion efficiency of felt, thermal-protective materials, rubbers, adhesives, lubricants and oils was studied. Methods of corrosion protection using anode-oxide and galvanic coatings, lubricants and technology of aluminum alloy surface preparation under adhesion with Elastosil adhesive were developed.
The results of study of the process for producing a polymer composite material by RFI. These changes are the porosity and surface quality of samples, depending on the plastic molding technology.
A list of the adhesive materials used in the shuttle «Buran» structure, as well as their basic physicomechanical properties and ways of application are presented. Purposes for the mentioned materials are presented.
The complete material and detail quality control is a requirement to the reliability of products operating in the conditions of repeating space flights. Finished parts can only be examined by the non-destructive control methods. Several methods were worked out to control the carbon-carbon composite material. The acoustic shadow control method is one of them. It is the most effective method for the production conditions. The other control methods (impedance technique, free oscillation technique) allow to control the details quality having the one-sided access to the object under control.
The scientific developments of VIAM on the improvements of composition and properties of the aviation organoplastics are described.
Modern technologies of new generation polymer composite materials processing based on polymer resins development of VIAM Federal State Unitary Enterprise and carbon and glass reinforcement fillers is described. The main examples of processing and technological equipment, developed by VIAM Federal State Unitary Enterprise in comparison with foreign analogs, and its characteristics are provided. VIAM Federal State Unitary Enterprise is equipped now with modern research, test and production equipment which allow to develop and produce polymer composite materials by modern technologies, according to all requirements for aviation material of new generation.
The article presents information about the developed paintwork recommended for coloring polymer composites in aeronautical engineering. The properties of weather resistant, weatherproof, erosion-resistant, environmentally friendly coatings used for protective and decorative painting of polymer composites used in the construction of aircraft for painting the interior of passenger vehicles, as well as to protect the contact joints aluminum - carbon fiber.
New development in the field of polymer composite materials of new generation on the basis of polymer binder development of VIAM Federal State Unitary Enterprise and carbon and glass reinforcement fillers is described. The main elastic and strength characteristics carbon fibers reinforced plastics development of VIAM Federal State Unitary Enterprise in comparison with foreign analogs are provided. VIAM Federal State Unitary Enterprise is equipped now with modern research, test and production equipment which allows to develop and make polymeric composite materials not conceding to the best foreign analogs.
The research into the aspects of improving the reliability and safety of the polymer composite structural materials in structural elements of aircraft is carried out. The problem of protecting structures against lightning discharges of carbon fiber reinforced plastics onto the outer surface of the aircraft is covered, principles of structural lightning protection coatings made of polymeric composites are stated and the results of research to develop them on the basis of the structural components of the polymeric composite materials which may be incorporated in the estimated power circuit design of carbon fiber is widely covered. Lightning coating is a layer of woven carbon fiber-based heat-resistant reinforcing filler and binder polymer-modified carbon nanoparticles, the main advantages of which in comparison with the currently used bronze grids is: lower area of the lesion with 65 cm2 to 4 cm2, the lack of weight gain during the application design lightning protection coverage, except
New composite materials are interesting for creation of new resin systems with special properties and application spheres, with different technology processings. The ecological and energy-effective technologies for production of materials are of great importance. Resin systems are created for wide classes of polymer systems, with complete estimation of resin systems and end products.