Viscoelastic composite damping vibration attenuation rubber plate of ship deck

Abstract

The invention relates to a viscoelastic composite damping vibration attenuation rubber plate of a ship deck. The vibration attenuation rubber plate is characterized by being composed of four layers of an aluminum foil restraint layer, a viscoelastic damping layer, a micropore foaming damping layer and a viscoelastic and self-bonded damping layer which are arrayed from outside to inside sequentially. Because the vibration attenuation plate is composed of four layers of the aluminum foil restraint layer, the viscoelastic damping layer, the micropore foaming damping layer and the viscoelastic and self-bonded damping layer which are arrayed from outside to inside sequentially, not only can the damping effect be improved, but also the construction is convenient, especially for the operation of the vertical surface and the top surface, therefore the vibration attenuation plate can be conveniently bonded and fixed on the inner layer of the ship deck through the viscoelastic and self-bonded damping layer, is not required to be fixed through heating, and is convenient to use; the structural damage factor is not less than 0.1 within a temperature range from minus 20 DEG C to 60 DEG C, and the vibration attenuation effect reaches more than 3db; compared with the existing single-layer butyl rubber, the vibration attenuation rubber plate has the advantages that the damping vibration attenuation performance is more superior, and the use temperature range is wider.

Description

Technical field [0001] The invention relates to a composite damping damping rubber sheet, in particular to a ship deck viscoelastic composite damping damping rubber sheet. Background technique [0002] The ship deck damping plate is installed on the inner layer of the ship deck to absorb the noise generated by the vibration of the deck. [0003] The traditional ship deck damping damping plate is composed of a thermal curing reinforcement layer and a surface layer, and the thermal curing reinforcement layer is a rubber modified epoxy resin layer. When in use, the heat curing reinforcement layer is attached to the inner layer of the steel plate of the vehicle and ship, and the rubber-modified epoxy resin layer is cured and bonded to the inner layer of the steel plate through the electrophoresis and paint baking process, so as to realize the reinforcement of the vehicle and the hull structure. Vibration and noise reduction. Its disadvantages are: although the hardness and strength o...

AI Technical Summary

Problems solved by technology

Its disadvantages are: although the hardness and strength of the heat-cured reinforcement layer are high, it plays a good role in structural reinforcement, but the vibration damping effect is not good, and the hardening speed is slow, and it consumes energy when baking.

Its disadvantage is that the heat-cured reinforcing layer in contact with the attachment needs to be pasted by heating and baking. It can be installed on the inner layer of the automobile steel plate, and the paste can be realized by using the temperature changes in the process of electrophoresis, baking paint, etc. during automobile manufacturing, but the installation On the back of a ship deck with a huge area, not only is the top construction difficult and inefficient, but also requires additional heating to achieve bonding, which consumes high energy; at the same time, due to the thicker damping plate used on the ship deck, the heat-cured reinforcement layer and the attached The bonding strength of crops is really not enough, so the damping plate of this patented structure cannot be effectively fitted when it is used as a ship deck damping plate, and the actual damping effect is poor after being installed on the ship deck

But it still has some disadvantages: before the rubber-modified epoxy resin layer and the butyl rubber layer are bonded by the self-adhesiveness of the butyl rubber layer, the rubber-modified epoxy resin layer needs to be pre-baked and hardened at a high temperature. It is cumbersome; there is no effective adhesion between the surface layer and the rubber-modified epoxy resin layer, which affects the damping effect; in addition, due to the limited pressure-sensitive bonding strength between the attachment and the butyl rubber layer, only thinner automobiles can be bonded The modified rubber damping layer cannot be bonded to the thicker butyl rubber layer, otherwise there will also be the problem of ineffective bonding, so it cannot be used as a vibration-damping damping plate for ship decks, and its application range is narrow

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