At present the paint damping material for ships main components are flaky steeling damping steel sheet and paints three categories of materials in the early days of a tar class products, prices, sources of extensive, but poor performance in damping, followed by-sheets of rubber, also known as damping stirring, generally by hydrogen rubber, butyl rubber coatings, etc., because its a bituminous materials damping characteristics of the larger increase in ship.
But there are some of the shortcomings of and, if you do not want painted primer surfaces and yet we hold degusting process fairly strict typically requires a 2.5 grade, construction require special adhesive to the edges, often caused by adhesive for loose, cracking, resulting in a sharp decline of vibration and noise effect, and the other for complex structure and curvature larger construction sites, application of rubber-sheet a lot of restrictions, damping plate is developed in recent years new damping material, the material is a layer of viscose elastic material in a two-layer thickness of plate will exist between the so-called sandwich damping structure resistant paint, with good results, attractive advantages, disadvantages are relatively large proportion of materials, cutting difficulties, damping coatings for health, should be transported hot especially welding process complex, welding process viscose elastic material flammable damaged its damping performance, and because of its high cost, the application is restricted. To tackle these challenges have emerged on the damping coatings, damping coatings as a new damping material because it has a manufacturing process simple, convenient, and polyurethane paint with excellent performance.
The rapid development of the initial number of damping coatings, mainly for solvent-based asphalt major film join other resin, auxiliaries, packing and mixture of organic solutions, not only of solvent-based damping coatings, and damping performance difference flammable or explosive, the use of unsafe, pollute the environment, should be subject to a lot of restrictions, in the late 1980s, some units have implemented water-based damping epoxy primer, the coatings although I solved the problem of environmental pollution. But slow drying coating, thickly difficulties, cracking need work, is not suitable for use in the shipbuilding industry