Sound insulating material and application thereof

Abstract

The invention provides a sound insulating material and an application thereof. The sound insulating material comprises a first stacked structure, wherein the first stacked structure comprises a plurality of first foaming layers and a plurality of first non-foaming layers, which are arranged at intervals. The sound insulating material has a good sound insulating effect, relatively low density and relatively light quality; noise is reflected from multiple layers by using acoustic impedance mismatching of the plurality of first foaming layers and the plurality of first non-foaming layers; and the contradiction between high sound insulation and low density and the problem of high noise penetrating power are solved.

Description

technical field [0001] The present invention relates to the technical field of materials, in particular to sound insulation materials and applications thereof, and more specifically to sound insulation materials, sound insulation components containing the sound insulation materials, household appliances and dishwashers. Background technique [0002] Noise pollution is becoming more and more serious, and its impact on the environment, especially the impact on human pursuit of green life, has attracted the attention of all walks of life. The prevention and control of noise pollution has become a major issue that needs to be solved urgently. The first step to reduce noise is to control the sound source, but due to the objective existence of the sound source in the environment, people mainly focus on the control of the noise transmission path to reduce the harm of noise to the receiver. Household appliances that are directly or indirectly placed indoors include compressors, heat...

AI Technical Summary

Problems solved by technology

Generally, increasing the material thickness or surface density can achieve better sound insulation effect, but increasing the thickness and inorganic filler or metal powder will make the material hard, and when the noise vibration source is covered, the vibration will cause the contact part around the sound insulation material , causing resonance, which in turn produces a second noise

Moreover, in some electrical appliances that need to be heated and dried, such as dishwashers, a large amount of metal powder and inorganic fillers are added to the soft sound insulation material. Although the sound insulation effect can be improved to a certain extent, but because of the added If the filler is added, the heat conduction will be enhanced on the contrary, resulting in heat loss to the outside, the insulation effect is not good, and the energy consumption of the whole machine will be increased virtually.

[0004] Therefore, the current sound insulation materials still need to be improved.

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