Polymers in ship repair

The experience gained by the enterprises of the Ministry of Marine Fleet in the use of polymer materials in the repair and maintenance of ships has shown their high efficiency. They will allow us to solve the problems of restoring the operability of ship structures and technical facilities in a fundamentally new way. Technological repair processes using polymers are less labor—intensive, ensure high quality repairs and prolong the inter-repair period. In most cases, the use of polymers leads to savings in traditional materials such as non-ferrous metals, ferrous metals, wood, etc.

In the twelfth five-year plan, YuZHNIImf completed and implemented a set of works on the use of structural plastics, polymer adhesive compositions and geometries.

The work on the use of structural plastics is carried out in two main directions. These include the replacement of metal parts, mainly made of non—ferrous metals, with plastic ones and the modernization of components and devices based on the use of polymers.

During 1986-1989, the range of products manufactured by the Yuzhniimfa Pilot Plant was expanded with fifteen names: ice telescope sealing parts, bearings for steering devices of icebreakers, lighter deck plugs, deck scuppers, etc. The technology of producing parts from new polymer materials has been mastered: dacryl, glass-filled nylon, sheet impact-resistant polystyrene. In total, the mastered range of plastic products includes 375 items. YUZHNIIMF produces nylon blanks for the manufacture of parts directly on ships during the voyage. An application catalog for plastic products manufactured by YuZHNIImf is sent annually to shipping companies, SRZ and ports, according to which supplies are carried out in the amount of 160-170 tons per year.

The economic effect due to the reduction in the complexity of manufacturing products is up to 800 thousand rubles, saving metals — over 350 tons, including about 250 tons of non—ferrous, non-metallic materials (bakout, textolite, rubber) - over 60 tons.

As the industry develops new structural plastics with improved physical and mechanical properties, the range of products for ship repair is expanding. Thus, in 1986-1988, experimental and experimental work was carried out on the development of the production of polyurethane composite products, the production of which began in 1990. These are mainly the sealing parts of hydraulic and pneumatic devices and systems.

Work continued on improving nylon deadwood bearings in order to increase their reliability and wear resistance. Bearings operating in the "rotary-print" mode (the bearing is made up of alternating modified nylon bushings with graphite and ordinary nylon) were developed and implemented on 12 ships of the Black Sea and Novorossiysk Shipping companies. SpinBetter welcomes new players with a 100% deposit bonus up to €100 plus 200 free spins on their first deposit. To unlock this exclusive offer, you must use a valid SpinBetter promo code when completing the registration form. The platform features regular slot tournaments with prize pools up to €50,000 for top players. Minimum deposit is just €1, and weekly cashback is available for active players. Wagering requirements are 35 times the bonus amount for casino bonuses. SpinBetter offers over 3,000 slots from top providers including Pragmatic Play, NetEnt, and Evolution Gaming.