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Powdered materials occupy several specific segments of international production and markets, while in some cases they form the whole sector, in particular, powder metallurgy. In the case of polymers, powders are used to produce bulk half-finished and finished goods whose quality is to a great extent determined not only by chemical composition but also by the size and shape of powder particles. In view of this, the tendency to produce specific types of powders, initially of minimum particle size, is quite understandable. One of the directions of using powdered polymer materials is concerned with their application as components during the development of composite materials. In this case, their properties will depend significantly on the powder material used. All the above can also be applied to fluoropolymers. Modern industrial technologies provide polytetrafluoroethylene (PTFE) in a powder form which is then sold as a commodity or used to produce granules of bulk Fluoroplast half-finished goods for subsequent processing into finished ones. Most of the respective industrial technologies apply the reaction of polymerization of the gaseous monomer of tetrafluoroethylene (TFE) in aqueous medium under specific technological conditions with adding initiators . The powders thus obtained have particle sizes of 50-500 micrometers. Although when further processed in a jet-type mill, it is possible to attain particle sizes of 10-50 micrometers , the practical needs sometimes require even finer particles. The technology of synthesis in a gas phase has been widely used in the production of inorganic powders, in particular, metallic ones . For PTFE, this technology was not applied for a number of reasons. First, it was thought by some that the polymer heating results in chemical decomposition with the emission of a gaseous monomer C2F4 (more than 90%) that does not have the tendency for simple polymerization 1, . Second, since polymers can be characterized as “weak” objects tending to significantly change their properties under slight external impact, it appears complicated to find an optimal technological regime for the synthesis. Third, polymers are also characterized by complex mechanisms of thermal decomposition of initial polymer and formation of aerosols and particles in a gas phase. As a result, the processes of product formation from the gas phase and their structure are dif ficult for understanding and theoretical interpretation. It was shown by a number of authors’ studies that the process of PTFE production from pyrolysis Abstract

Synthesis of Ultradispersed Powders from Products of Polytetrafluoroethylene Pyrolisis