Foamed aluminum and viscoelastic damping composite material and preparation method

Abstract

The invention provides a foamed aluminum and viscoelastic damping composite material and a preparation method. The preparation method comprises the following steps: an emulsion or a premixed solution of a viscoelastic damping material is put into a mold; pored foamed aluminum is totally or partially immersed in the emulsion or a premixed solution of the viscoelastic damping material to ensure that the viscoelastic damping material can totally or partially permeate into inner pores in pored foamed aluminum in a dispersively embedded manner; after curing, the composite material adopting the structure that the pores in pored foamed aluminum are filled with the viscoelastic damping material is formed. The composite material has the advantages that pored foamed aluminum is adopted for a compositing process, so that the viscoelastic damping material can be sufficiently immersed in the interior of foamed aluminum, foamed aluminum and viscoelastic damping material composite layers as well as foamed aluminum and viscoelastic damping material combined layers are formed in a composite structure, the effect of vibration reduction can be better, the characteristics of both light weight and high damping are realized, and the mechanical property is excellent; the composite material is suitable for being laid on a floor, a cabin, a wallboard, the external surface of a machine and the like, and can be directly utilized in a supporting structure requiring low strength.

Description

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AI Technical Summary

Benefits of technology

This patented technology describes an improved type of soundproof material made from porous metal foams called Foaming Aluminum (FoA). These foames have specific features like being lighter than regular steel but still very strong when compressed under pressure compared to traditional methods. They may contain holes within them where they stick out during compression without losing their shape due to gravity forces. When this new combination material becomes wet it expands into tiny bubbles which help absorb sounds effectively. Additionally, these foils provide good flexibility allowing them to conform well around curved surfaces while maintaining its ability to dissipate energy efficiently over long periods of time. Overall, FAA offers various advantages including reduced thicknesses, increased impact resistance, enhanced acoustical behavior, durability against environmental factors, ease of manufacturing, cost savings, and potential applications in other industries involving machinery.

Problems solved by technology

Technological Problem: Current methods aimed at reducing impacts caused by machining processes involve adding layers made of different types of rubbery polymers (rubbers) between two rigid parts like steel bars. These techniques result in decreased stiffness and reduced efficiency due to increased friction during use. Vibrations and noises may be transmitted into other areas where they could harm those nearby devices. Therefore there exists a challenge related to improving these technologies without compromising their original functioniveness.

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