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Orthotropic alternatively laminated composite damping material and damping modulation method thereof

A composite damping material, orthotropic technology, applied in the field of composite damping materials, to achieve the effect of improved structural damping value, strong designability, and light and thin structure

Inactive Publication Date: 2010-10-20
NANCHANG HANGKONG UNIVERSITY
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  • Abstract
  • Description
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  • Orthotropic alternatively laminated composite damping material and damping modulation method thereof
  • Orthotropic alternatively laminated composite damping material and damping modulation method thereof
  • Orthotropic alternatively laminated composite damping material and damping modulation method thereof

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Embodiment

[0011] Example: 7 layers (3 damping layers 4 anisotropic layers) composite damping structural material

[0012] The specific structure is 0°(0.125) / 0.4 / 90°(0.075) / 0.3 / 90°(0.125) / 0.3 / 0°(0.125), and the structure representation is as follows: the anisotropic layer shows the fiber laying direction angle and thickness (in brackets), the damping layer only shows the thickness (in mm), and the layers are separated by the symbol " / ".

[0013] Raw materials:

[0014] The damping layer material of the test piece is made of pressure-sensitive viscoelastic damping material ZN-8 (domestic) with an interpenetrating network (IPN) structure, and the thickness is 0.3mm and 0.4mm. The material of the bonding layer is T54 / T60 modified epoxy resin for ships diluted with xylene (produced by Qingdao Ocean Chemical Research Institute of the Ministry of Chemical Industry, component ratio A:B=16:1). The anisotropic layer material is made of carbon fiber prepreg (produced in Shandong) scrape-coated ...

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Abstract

The invention relates to an orthotropic alternatively laminated composite damping material, which is characterized by being an orthotropic alternatively laminated composite damping material with dispersed multiple damping layers formed by alternatively laminating damping material thin layers and high-strength anisotropic elastic material thin layers. The composite damping material in the invention has the advantages of light and thin structure, greatly improving structure damping value, strong designability, high structure strength, easy manufacturing and less equipment investment, and is an ideal path to searching and developing a novel environment functional material with composition of material and structure. The composite damping structure material with the structure damping valve more than 0.5 can be obtained by a DMA frequency scanning test at room temperature, the damping value thereof is 20 times of that of the existing fiber reinforced resin matrix composite material. The invention is suitable for damping and sound proof aspects in the fields of aviation, ships, engineering machinery, buildings and the like, and can determine parameters of damping products according to actual demands so as to determine to process specific products.

Description

technical field [0001] The invention relates to a composite damping material, in particular to an alternately laminated orthotropic composite damping material and a damping modulation method thereof. Background technique [0002] Reasonable use of damping materials can effectively reduce vibration and noise. With the improvement of environmental protection awareness and the stricter vibration and noise control standards, the damping control of vibration and noise has become an important requirement in the structural design of vehicles such as aircraft and automobiles. The alternate lamination of dispersed multi-damping layers of the present invention is The anisotropic composite damping structure material is different from the traditional isotropic laminated damping structure, because the damping loss factor of the latter structure (about 0.1 after optimization) is quite different from the loss factor of the damping material itself (generally more than 0.8) and The structur...

Claims

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Application Information

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IPC IPC(8): B32B7/02B32B5/12B32B37/10B32B38/08
Inventor 李明俊武化民徐泳文叶皓黎鹏平曹群
Owner NANCHANG HANGKONG UNIVERSITY
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