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Metal net sandwiched structure composite damping material and preparation method thereof

A composite damping material and sandwich structure technology, applied in metal layer products, chemical instruments and methods, lamination, etc. Elasticity and strength, the effect of improving low-frequency sound absorption and damping performance

Inactive Publication Date: 2018-03-20
HEILONGJIANG HEIKE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the technical problem of narrow damping temperature range of the existing damping and sound insulation materials, and provides a metal mesh sandwich structure composite damping material and its preparation method

Method used

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  • Metal net sandwiched structure composite damping material and preparation method thereof
  • Metal net sandwiched structure composite damping material and preparation method thereof
  • Metal net sandwiched structure composite damping material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0017] Embodiment 1: The metal mesh sandwich structure composite damping material in this embodiment is composed of epoxy resin graft modified polyurethane polymer elastomer and wire mesh, wherein the wire mesh is single-layer or multi-layer;

specific Embodiment approach 2

[0018] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the wire mesh is brass mesh, red copper mesh or steel mesh; others are the same as Embodiment 1.

specific Embodiment approach 3

[0019] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that the metal wires of the wire mesh are weaved in plain weave or twill weave; others are the same as Embodiment 1 or Embodiment 2.

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Abstract

The invention discloses a metal net sandwiched structure composite damping material and a preparation method thereof, relates to a composite damping material and a preparation method thereof and aimsto solve the technical problem that a conventional damping sound-insulating material is narrow in damping temperature domain. The metal net sandwiched structure composite damping material is preparedfrom an epoxy resin grafting modified polyurethane macromolecule elastomer and a metal gauze through compounding. The preparation method comprises the following steps: I, pretreating a metal net; II,preparing an epoxy resin grafting modified polyurethane prepolymer; III, uniformly stirring the prepolymer with a diamine chain extender so as to obtain a casting liquid; and IV, putting the metal netinto a mold, further casting the casting liquid into a mold cavity, and curing, thereby obtaining the metal net sandwiched structure composite damping material. The damping temperature domain of thematerial is 60-130 DEG C, and the material can be applied to fields such as protection, modern automobiles, ships and aerospace fields.

Description

technical field [0001] The invention relates to a composite damping material and a preparation method thereof, and belongs to the theoretical field of local resonance acoustic materials based on a mass spring structure. Background technique [0002] The traditional damping layer material is a heterogeneous material with dispersed and embedded components, such as fiber Composite materials such as reinforced composite materials, granular composite materials, and functional materials have been applied in some structures, but there are limitations in the concentration of such reinforcement materials in the matrix and the degree of mutual internal connection of the two materials, making the composite The strength of the material is low, and the damping effect is poor. In the article "Research on the Damping and Sound Insulation Performance of Alternate Multilayer TPU / SEBS Composite Materials" published in "Guangzhou Chemical Industry" in Volume 37, Issue 5, 2009, a layered compo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B15/02B32B15/092B32B15/095B32B37/15B32B37/24B32B38/18C08G18/65C08G18/69C08G18/58C08G18/12C08G18/32
CPCB32B5/028B32B15/02B32B15/092B32B15/095B32B37/15B32B37/24B32B38/1808B32B2250/42B32B2262/103B32B2305/38B32B2307/102B32B2307/552B32B2307/558B32B2307/56B32B2605/08B32B2605/12B32B2605/18C08G18/12C08G18/58C08G18/6594C08G18/698C08G18/3814
Inventor 刘晓东崔向红苏桂明李天智姜海键陈明月方雪
Owner HEILONGJIANG HEIKE TECH CO LTD
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