Double-component double-layer composite damping material

Abstract

The invention discloses a double-component double-layer composite damping material. The double-component double-layer composite damping material comprises a first material layer and a second material layer, wherein piece by piece, the first material layer and the second material layer are placed in a pile. The first material layer comprises: by weight, 28 to 32% of brominated butyl rubber (BIIR), 58 to 62% of calcium carbonate (CaCO3), 1% of a promoter (DM), 1% of zinc oxide, 1% of an antioxidant (D), 1% of zine stearate, 3% of carbon black and 3% of sulphur. The second material layer comprises: by weight, 28 to 32% of an ethylene-propylene-diene monomer (EPDM), 58 to 62% of calcium carbonate (CaCO3), 1% of a promoter (DM), 1% of an antioxidant (D), 1% of zine stearate, 4% of sulphur, 1% of toner and 2% of naphthenic oil. The double-component double-layer composite damping material is utilized mainly for noise reduction and vibration damping of a high-precision apparatus in mechanical equipment, the interior of high-speed locomotives and various vibration sources of ships and warships, and for preparation of high-elasticity vibration-damping base plates of a high-speed rail. Compared with the same type of other products, the double-component double-layer composite damping material has the characteristics of prominent performances of middle-low frequency noise reduction, light product weight, wide damping temperature range, wide noise reduction frequency range, and good aging resistance.

Description

technical field [0001] The invention relates to a damping material, in particular to a two-component double-layer composite damping material made of polymer material. Background technique [0002] At present, the well-known acoustic wave damping materials on the market are single-component single-layer composite damping materials made of polymer materials. The energy attenuation effect is not very ideal. Contents of the invention [0003] The object of the present invention is to provide a two-component double-layer composite damping material made of polymer material. [0004] The technical solution adopted by the present invention to solve the technical problem is: adopt the two-component double-layer composite damping material made of polymer materials (BIIR and EPDM), the first layer of material and the second layer of material are laminated in sheet form, and the sound wave After passing into the first first-layer damping material (BIIR), the energy of the sound wave...

AI Technical Summary

Problems solved by technology

[0002] At present, the well-known acoustic wave damping materials on the market are single-component single-layer composite damping materials made of polymer materials. The energy attenuation effect is not very ideal