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A Capsule Wall Panel Effectively Blocking Low-Frequency Noise

A low-frequency noise and capsule technology, used in walls, sound insulation, buildings, etc., can solve problems such as poor low-frequency sound isolation effect.

Active Publication Date: 2020-10-27
HUAIYIN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, wall panels generally adopt a laminated structure of multiple layers of different materials, which can also effectively block medium and high-frequency noise above 200 Hz, but the low-frequency sound blocking effect has always been unsatisfactory.

Method used

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  • A Capsule Wall Panel Effectively Blocking Low-Frequency Noise
  • A Capsule Wall Panel Effectively Blocking Low-Frequency Noise
  • A Capsule Wall Panel Effectively Blocking Low-Frequency Noise

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] It includes a core layer 1 made of PU foam material with a thickness of 3cm, a damping layer 2 made of fire-resistant and flame-retardant materials on both sides of the core layer, and an aluminum plate surface layer 3 outside the damping layer, and a layer of Capsule array, the diameter of the capsule 4 is 0.5cm, and the distance between the capsules is 2cm; the inside of the capsule 4 is filled with 30% of the micropowder particles 5 of the capsule cavity volume, and the micropowder particles 5 are composed of two different particle sizes of A micropowder 51 and B micropowder 52, the A micropowder 51 particle size is 120 mesh, the B micropowder 52 particle size is 3 times the A micropowder particle size, and the A micropowder 52 mass accounts for 90% of the overall micropowder mass. The capsule skin layer 53 is made of polyvinyl chloride material, and the micropowder particles 5 in the capsule are glass microspheres.

Embodiment 2

[0022] A three-layer capsule array is scattered in the core layer 1, and the capsules of each layer are arranged in a staggered manner, and the rest are as in Example 1.

Embodiment 3

[0024] The surface layer 3 is a steel plate, and the distance between the capsules is 1 cm. All the other are as embodiment 1.

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Abstract

The invention discloses a capsule wall board capable of effectively obstructing low-frequency noise. The capsule wall board comprises a core layer made of a PU foaming material, damping layers made offireproof and flame-retardant materials on the both sides of the core layer, and metal face layers on the outer sides of the damping layers, and at least one layer of capsule arrays are dispersed inthe core layer; and capsules are filled with micro powder particles accounting for 20-30% of the volume of inner cavities of the capsules, and the micro powder particles are formed by mixing micro powder A and micro-powder B which have two different particle diameters. From the overall structure, the noise obstructing performance of the wall board is enhanced through a sandwich structure made of multiple layers of different materials, the low-frequency noise which cannot be obstructed by the sandwich structure is further eliminated through a three-dimensional phononic crystal structure constructed by the capsule arrays, the micro powder particles in the capsules vibrate in the transmission process of the noise, especially the low-frequency noise, and energy of the low-frequency noise is effectively consumed.

Description

technical field [0001] The invention relates to the field of wall structures in the construction industry, in particular to a capsule wallboard that effectively blocks low-frequency noise. Background technique [0002] The human ear can distinguish sounds in the range of 15 Hz to 20,000 Hz. Generally speaking, the various sounds that humans use for communication are in the range of 200 Hz to 8000 Hz, and the sounds below 200 Hz are low-frequency sounds. Among them, the frequencies that have a more obvious impact on the human body are mainly 3-50 Hz. scope. High-frequency noise can rapidly attenuate as the distance increases or encounters obstacles. For example, a point source of high-frequency noise can drop by 6 decibels every 10 meters. However, the low-frequency noise decreases very slowly, and the sound waves are longer, which can easily pass through obstacles, attack long distances and penetrate walls and walls directly into the human ear. Although the direct impact ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04C2/30E04B2/00E04B1/86
CPCE04B1/86E04B2/00E04C2/30
Inventor 彭宁波董云夏江涛朱鹏宇顾文虎刘畅邹易君张国瀛
Owner HUAIYIN INSTITUTE OF TECHNOLOGY