Sound insulation and noise reduction composite material and preparation method thereof

A composite material and noise reduction technology, applied in the field of materials, can solve problems such as insufficient stiffness and thermal performance, and achieve the effects of improving shear modulus, easy manufacturing, and reducing weight

Active Publication Date: 2020-05-08
上海众汇泡沫铝材有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As another example, common sound-insulating textile materials are made of organic fibers (such as hemp fibers, cotton fibers, bamboo fibers, polyester fibers, etc.) and/or inorganic fibers (such as stainless steel

Method used

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  • Sound insulation and noise reduction composite material and preparation method thereof
  • Sound insulation and noise reduction composite material and preparation method thereof
  • Sound insulation and noise reduction composite material and preparation method thereof

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Embodiment Construction

[0037] The present invention will be described in detail below in conjunction with specific embodiments and accompanying drawings.

[0038] like figure 1 As shown, this embodiment provides a sound-insulating and noise-reducing composite material, including a base plate 1, a top plate 2, and a sandwich layer 3 between the base plate 1 and the top plate 2, and the sandwich layer 3 has a negative Poisson’s ratio unit 4 . Described negative Poisson's ratio unit 4 comprises the first negative Poisson's ratio unit and the second negative Poisson's ratio unit, and described first negative Poisson's ratio unit and the second negative Poisson's ratio unit all have several same-sized inner concave hexagonal structure; figure 2 shows a schematic cross-sectional view of the first negative Poisson's ratio unit and the second negative Poisson's ratio unit with the same structure, and in the schematic diagram, the first negative Poisson's ratio unit and the second negative Poisson's ratio...

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Abstract

The invention relates to the field of material science, and in particular, relates to a sound insulation and noise reduction composite material and a preparation method thereof. The sound insulation and noise reduction composite material comprises a base plate, a top plate and a sandwich layer located between the base plate and the top plate, wherein the sandwich layer is provided with a negativePoisson's ratio unit; the negative Poisson's ratio unit is mainly formed by alternately stacking and bonding a first negative Poisson's ratio unit and a second negative Poisson's ratio unit made of two different materials and having concave hexagonal structures. The sound insulation composite material has the negative Poisson's ratio unit, the sound insulation and noise reduction performance of the material can be improved, meanwhile, the shear modulus, the fracture resistance, the resilience toughness and the load resistance of the material are improved, and the application range of the material is greatly expanded.

Description

technical field [0001] The invention relates to the field of material technology, in particular to a sound-insulating and noise-reducing composite material and a preparation method thereof. Background technique [0002] With the development of industrial production, transportation, urban construction, and the increase of population density, the increase of household facilities (audio, air conditioner, television, etc.), environmental noise is becoming more and more serious, and it has become a major public hazard that pollutes the human social environment. Noise will not only affect hearing, but also have adverse effects on people's cardiovascular system, nervous system, and endocrine system, so some people call noise a "deadly chronic poison". Noise can cause physical and psychological harm to people. [0003] There are generally three ways to prevent and control noise: control at the sound source, control during transmission, and control at the receiver. Among these cont...

Claims

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Application Information

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IPC IPC(8): B32B3/06B32B3/08B32B3/28B32B3/30B32B7/12B32B15/082B32B15/18B32B15/20B32B27/08B32B27/30B32B33/00B32B37/04B32B38/10
CPCB32B3/06B32B3/08B32B3/28B32B3/30B32B7/12B32B15/082B32B15/18B32B15/20B32B27/08B32B27/306B32B33/00B32B37/04B32B38/10B32B2307/102B32B2307/558
Inventor 赵思奇赵利民
Owner 上海众汇泡沫铝材有限公司
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