Multilayer structure sound insulation carpet and preparation method thereof

Abstract

The invention discloses a multilayer structure sound insulation carpet and a preparation method thereof. The sound insulation carpet separates the inner wall of an automobile compartment from the space of the automobile compartment; the sound insulation carpets are arranged on the inner wall of the automobile compartment at regular intervals. The sound insulation carpet is provided with a sound insulation part; the sound insulation part is arranged between the sound insulation carpet and the inner wall of the automobile compartment. The sound insulation part has a favorable propagation part and an unfavorable propagation part, wherein the favorable propagation part is a favorable part for the transmission of noise outside an automobile, and the favorable propagation part surrounds the periphery of the unfavorable propagation part, and the favorable propagation part is favorable for propagation compared with the unfavorable propagation part; noise transmission is suppressed from the transmission mode by the sound insulation part, thereby suppressing the transmission of the noise to the automobile compartment; and the sound insulation carpet reduces the sound energy, enhances the acoustic impedance and has higher sound insulation performance through the combination of dispersion and extension in the way of ensuring normal materials.

Description

technical field [0001] The invention relates to the technical field of carpets, in particular to a multilayer soundproof carpet and a preparation method thereof. Background technique [0002] The noise generated by the moving car and the outside of the car will be transmitted to the car compartment, including but not limited to: noise from friction between the road surface and tires, noise from the engine and gearbox, and noise from the chassis of the car, etc. ; [0003] These noises will be transmitted through the car compartment, thereby affecting the ride experience and quietness of the car. Usually, manufacturers use carpets for sound insulation. Carpets have sound insulation materials. Most manufacturers use stacking Improve the sound insulation of the cabin by using materials (increasing the amount of materials and using more expensive and rare materials); [0004] Schematic illustration: Ordinary soundproof carpets have a structure of less than 5 layers, increasing...

AI Technical Summary

Problems solved by technology

[0005] Therefore, the stacking method directly increases the difficulty of raw material procurement, preparation process, and preparation cost of the carpet, and is not suitable for every car; therefore, the car compartment needs a sound-insulating carpet that suppresses noise transmission in the way of transmission, so as to ensure normal use of materials. with higher sound insulation

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