A metal powder-rubber particle composite phonon material, preparation method and application

A technology of rubber particles and metal powder, which is applied in the direction of sound-generating devices and instruments, can solve the problems of limited material thickness, little practicality, complex structure, etc., and achieve high-efficiency absorption of low-frequency sound, excellent sound absorption characteristics, and high sound absorption coefficient Effect

Active Publication Date: 2022-04-12
SHAANXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, acoustic metamaterials are used for sound insulation in the middle and high frequency bands, and are limited by the thickness of the material. In the preparation of acoustic metamaterials, modules with special structures are often arranged and combined according to certain rules, and the band gap structure is studied by computer numerical simulation. Experimental tests Sound absorption performance, but due to its complex structure and high cost, it is rarely used in practice

Method used

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  • A metal powder-rubber particle composite phonon material, preparation method and application
  • A metal powder-rubber particle composite phonon material, preparation method and application
  • A metal powder-rubber particle composite phonon material, preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] A metal powder-rubber particle composite phonon material,

[0046] Including rubber particles, and metal powder coated on the surface of the rubber particles;

[0047] Wherein, the metal powder adheres to the surface of the rubber particles through an adhesive to form an elastic sphere with a core-shell structure;

[0048] The particle size of the rubber particles is 0.6mm;

[0049] The thickness of the metal powder adhering to the surface of the rubber particles through an adhesive is 0.45 mm;

[0050] The particle size of the metal powder is 50 mesh;

[0051] The metal powder-rubber particle composite phonon material described above is prepared according to the following preparation method, see figure 1 , including the following steps:

[0052] Weigh 0.2g of component A epoxy resin in the two-component adhesive including component A and component B and add it to 5mL of acetone to obtain A solution; use the same method to add 0.2g of component B epoxy resin Add th...

Embodiment 2

[0054] Same as Example 1, the difference is that

[0055] The particle size of the rubber particles is 1 mm.

Embodiment 3

[0057] Same as Example 1, the difference is that

[0058] The particle size of the rubber particles is 2mm.

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Abstract

The invention provides a metal powder-rubber particle composite phonon material, which relates to the technical field of sound insulation materials. Including rubber particles, and metal powder coated on the surface of the rubber particles; wherein, the metal powder is adhered to the surface of the rubber particles by an adhesive to form an elastic sphere with a core-shell structure; the present invention mainly utilizes High-density metal powder and rubber particles are combined to form a phonon material that can efficiently absorb low-frequency sound, and it is used in sound-absorbing rubber sheets. It is said that the sound-absorbing rubber sheet has high sound absorption coefficient, excellent sound absorption characteristics, no pollution, light weight, and low cost. .

Description

technical field [0001] The invention belongs to the technical field of sound insulation materials, and in particular relates to a metal powder-rubber particle composite phonon material, a preparation method and an application. Background technique [0002] Most of the current sound insulation and sound absorption material panels are conventional damping material panels, and their structures are generally single-layer, hollow structures, or sandwich structures formed by filling high-performance fibers, high-damping polymers, and special mixing in two-layer panels. , or add a hollow plate in the two-layer board, the theoretical basis is to follow the mass law and the internal damping theory of the material, the sound insulation effect of this traditional sound insulation material board is not ideal, and the production process is also relatively Complicated and relatively expensive to produce. [0003] In order to achieve the above purpose, those skilled in the art are based o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L21/00C08L63/00C08K3/08G10K11/162G10K11/165
CPCC08L21/00G10K11/162G10K11/165C08L2207/53C08K2201/005C08K2003/0887C08K2003/085C08L63/00C08K3/08
Inventor 王公正高源王亚航黄帅彭军霞
Owner SHAANXI NORMAL UNIV
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