Discussion

Since the invention of Nikolai Vigneron in 1917 a self-propelled reinforced concrete seagoing ship (Namsenfijord) the craft of concrete began to appear. The possibility of obtaining durable airtight rubberized fabrics based on the discovery of rubber by the American Charles Goodier in 1939 paved the way for the creation of rubber boats. Concrete pontoons are not recognized because of their large massiveness, and rubber, inflatable pontoons are at risk of rapid sinking. Almost unsinkable recognized synthetic pontoons.

In 1955, the first synthetic pontoons were made from chlorine polyvinyl of Laroche's Construction in France. Another construction of a synthetic floating cover, for example pontoon "Reflex", made of glass fibre laminate panels based on polyester resins. Pontoons from polyurethane plates are known, in France and Belgium pontoons from the plasticized polyvinyl chloride were made. In the United States and Canada in 1989 proposed polyethylene pontoons (Lukyanov, 1999).

 Invented in the USSR in 1960, the monolithic seamless pontoon (Patent 116833), modular pontoon systems patented by Magic-Float Enterprises Co., Ltd (Taiwan), design American versatile pontoon invented in 2004 (Patent 20040028478) the last Russian patent floating platform (Patent 161317) are close technical decision to the studied plastic pontoon designs. The offered pontoons and floating platforms are plastic hollow modules of cubic, rectangular or multi-faceted shape, interconnected along the perimeter of the fastening elements. Rigid connecting elements of the attachment, under intense wave oscillations, undergo loading in bending, decreasing their durability. In the investigated plastic pontoon structures there is a flexible rope connection passing through the body of the pontoon. There are fastenings on the perimeter of the body, but the bulk of the pontoons does not experience wave loads, due to the redirection of the wave motion along the bottom gratings on the body of the pontoon, losing its kinetic energy when falling into the pool (Patent 2659315).

For the manufacture of pontoons "coastal" zone, directly experiencing the load of wave oscillations, requires a strong polymer with high wear resistance. Scientists have so far undertaken only comprehensive studies of the electrophysical and thermodynamic properties of C60 and C70 fullerites under step shock-wave loading. Studies of substances subjected to step shock compression, made possible through the use of ampoules made of different materials. The result revealed that the fullerite C70 is less stable than the fullerite C60 (Avdonin 2008).

The use of shock wave technology in the manufacture of pontoons from polyethylene terephthalate involves a multiple increase in the density of the polymer, its elasticity and strength, but no research has been conducted in this area. Currently, extensive experimental information on the transition phases, physical and chemical transformations, elastic-plastic and strength properties of various materials in the microsecond and nanosecond ranges of exposure times at normal and elevated temperatures has already been obtained, significant progress has been made in the development of methods for obtaining information on the kinetic laws of the processes accompanying the shock compression of the substance (Bezrucko, 2010).