Anechoic tile skin coating material and preparation method thereof

Abstract

The invention relates to an anechoic tile skin coating material and a preparation method thereof. The method is characterized by comprising the following steps: carrying out interface treatment on the surface of a rubber anechoic tile; and then coating a layer of jointless polyurethane skin coating material of 3mm to 5mm outside the surface of the rubber anechoic tile in a spray shaping manner. The polyurethane skin layer has the excellent material mechanics property, so that the impact resistance of the anechoic tile is effectively improved, the rubber deformation of the anechoic tile under the condition of a deep water pressure is effectively reduced, the damage probability of the anechoic tile is effectively decreased and the navigational power of a ship is effectively improved on the premise that the original sound absorption property of the anechoic tile is not influenced. Thus, the anechoic tile skin coating material belongs to the field of underwater sound protection materials and is suitable for being matched with the anechoic tile wrapped outside the ship.

Description

Technical field: [0001] The patent of the present invention relates to an application technology of a protective material matched with an underwater sound-absorbing material, and is particularly suitable for high-performance protective coatings on the outer surface of ships and underwater detectors with sound-absorbing performance requirements. Background technique: [0002] At present, the sound absorption method commonly used in my country for the surface of ships and underwater detectors with sound absorption performance is to cover the outer shell with a layer of rubber anechoic tiles. The area of ​​the anechoic tile is 0.3~0.5m. 2 , The thickness is 30-60mm, through screw fixation and bottom surface bonding and covering, forming an integral sound-absorbing layer on the shell surface, and the gap between the tiles is filled with polysulfide rubber sealant. [0003] The main problems of this anechoic tile pasting process are: due to the small size of the anechoic tile, there are ...

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Problems solved by technology

[0003] The main problem of this kind of anechoic tile cladding process is: because of the small size of the anechoic tile, there are many gaps, and at the same time, the bonding strength between the polysulfide rubber sealant and the tile is much lower than that of the rubber tile. The strength of the block itself, the sealant is seriously deformed under pressure in deep water conditions, and at the same time, once the anechoic tile is partially deformed after being hit by a submerged reef, it is easy to cause the original sealant to crack; once the sealant cracks or the rubber silences If the tile is damaged, water will enter the sound-absorbing cavity of the anechoic tile, which will seriously affect the performance of underwater sound absorption. At the same time, due to the cracking of the sealant, the seawater will directly contact the shell of the hull, resulting in corrosion of the shell; and the sealant itself has no absorbing properties. sound function

[0005] After reviewing relevant domestic patents and technical literature, no public reports of patents and technical processes similar to the patent of the present invention have been found

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