Copper-aluminum-manganese alloy/ polymer/ carbon nanotube damping material and preparation method

A carbon nanotube and damping material technology, applied in the field of copper-aluminum-manganese alloy/carbon nanotube/polymer damping material and preparation, can solve the problems of reducing damping alloy, insufficient strength and dimensional stability, etc. Good dimensional stability and good damping performance

Active Publication Date: 2019-01-29
CENT SOUTH UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In view of the deficiencies in the prior art, the object of the present invention is to provide a copper-aluminum-manganese alloy / polymer / carbon nanotube damping material with good vibration and noise reduction effect, small specific gravity, high strength, high temperature resistance and good dimensional stability and The preparation method, the damping material can effectively superimpose the multi-component damping mechanism, which can not only effectively reduce the proportion of the damping alloy, but also make up for the shortcomings of insufficient strength and poor dimensional stability of the polymer damping material, thereby improving its damping performance

Method used

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  • Copper-aluminum-manganese alloy/ polymer/ carbon nanotube damping material and preparation method

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Embodiment 1

[0038] In an embodiment of the present invention, a method for preparing a copper-aluminum-manganese alloy / polymer / carbon nanotube damping material comprises the following steps:

[0039] (1) preparing a porous copper-aluminum-manganese alloy skeleton;

[0040] 1.1) melting the Cu-11.9Al-2.5Mn (wt%) alloy to obtain a CuAlMn alloy melt;

[0041] 1.2) Using high-purity argon to atomize the CuAlMn alloy melt into CuAlMn alloy powder through an atomizer, and screen the CuAlMn alloy powder to obtain CuAlMn alloy powder with a particle size of less than 75 μm;

[0042] 1.3) Sieve the square NaCl particles to obtain NaCl particles with a particle size range of 1 to 1.43mm, and mix them uniformly according to the mass ratio of 80% theoretical porosity, and mix CuAlMn alloy powder and square NaCl particles at a mass ratio of 0.868:1 Mix evenly to obtain mixed powder;

[0043] 1.4) Vacuum hot pressing sintering: put the mixed powder into the graphite mold of the hot press, and vacuum to...

Embodiment 2

[0054] In an embodiment of the present invention, a method for preparing a copper-aluminum-manganese alloy / polymer / carbon nanotube damping material comprises the following steps:

[0055] (1) preparing a porous copper-aluminum-manganese alloy skeleton;

[0056] 1.1) melting the Cu-11.9Al-2.5Mn (wt%) alloy to obtain a CuAlMn alloy melt;

[0057] 1.2) Using high-purity argon to atomize the CuAlMn alloy melt into CuAlMn alloy powder through an atomizer, and screen the CuAlMn alloy powder to obtain CuAlMn alloy powder with a particle size of less than 75 μm;

[0058] 1.3) Sieve the square NaCl particles to obtain NaCl particles in the particle size range of 1-1.43 mm and 0.355-0.45 mm, mix them uniformly according to the mass ratio of 80% theoretical porosity, and sieve the CuAlMn alloy powder, large-grained Large NaCl and small particle NaCl are mixed according to the mass ratio of 1.858:1.14:1. First, mix CuAlMn alloy powder with large square NaCl with a particle size ranging f...

Embodiment 3

[0068] In an embodiment of the present invention, a method for preparing a copper-aluminum-manganese alloy / polymer / carbon nanotube damping material comprises the following steps:

[0069] (1) preparing a porous copper-aluminum-manganese alloy skeleton;

[0070] 1.1) melting the Cu-11.9Al-2.5Mn (wt%) alloy to obtain a CuAlMn alloy melt;

[0071] 1.2) Using high-purity argon to atomize the CuAlMn alloy melt into CuAlMn alloy powder through an atomizer, and screen the CuAlMn alloy powder to obtain CuAlMn alloy powder with a particle size of less than 75 μm;

[0072] 1.3) Sieve the square NaCl particles to obtain NaCl particles in the particle size range of 1 to 1.43mm, mix them uniformly according to the mass ratio of 90% theoretical porosity, and mix the screened CuAlMn alloy powder and NaCl particles with a mass ratio of 0.386 : 1 mix;

[0073] 1.4) Vacuum hot pressing sintering: put the mixed powder into the graphite mold of the hot press, and vacuum to 10 -2 ~10 - 3 Pa, ...

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Abstract

The invention discloses a copper-aluminum-manganese alloy / polymer / carbon nanotube damping material and a preparation method and belongs to the technical field of damping material preparation. The damping material comprises a porous copper-aluminum-manganese memory alloy framework and a thermoplastic elastomer. The thermoplastic elastomer is acquired by blending polyacrylate rubber, polyvinyl chloride and carbon nanotubes together. The thermoplastic elastomer is loaded in pores of the copper-aluminum-manganese memory alloy framework. The pore diameter of the porous copper-aluminum-manganese memory alloy framework ranges between 0.355 Mu m and 1.43 Mu m, and the pore rate of the porous copper-aluminum-manganese memory alloy framework ranges between 70% and 90%. The porous copper-aluminum-manganese shape memory alloy with high anti-martensite stabilization capacity and with pores communicating with each other is adopted as the framework. The thermoplastic elastomer generated by a polyacrylate composite material (ACM) polymer, a polyvinyl chloride (PVC) polymer and carbon nanotubes (CNT) is infiltrated into the communicating pores. According to the composite material, the proportionof the damping alloy can be effectively reduced; and disadvantages of the polymer damping material that the strength is not enough and dimensional stability is poor can also be remedied. By adopting the porous copper-aluminum-manganese shape memory alloy framework, pore structure parameters can be controlled accurately; and in addition, the porous copper-aluminum-manganese shape memory alloy framework has the advantages of being great in energy absorption, high temperature resistance and good in dimensional stability.

Description

technical field [0001] The invention belongs to the technical field of damping material preparation, and relates to a copper-aluminum-manganese alloy / carbon nanotube / polymer damping material and a preparation method. Background technique [0002] Vibration and noise not only damage the environment and human health, but also affect the quality of machinery, shorten the life of equipment, and reduce the accuracy and reliability of instruments. For example, the failure analysis results of rockets and satellites show that about two-thirds of failures are related to vibration and noise. During the long-term use of the aircraft, due to vibration, cracks in the rudder and tail cover, cracks in the pitot tube, and noise in the cockpit often occur, which seriously affect its reliability and service life. Various instruments and meters on the aircraft are in the environment of vibration and noise, and often break down. In addition, submarines and ships have problems such as high noi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/11B22F3/14B22F3/26C08L33/04C08L27/06C08K3/04
CPCB22F3/1121B22F3/1134B22F3/14B22F3/26B22F2003/145B22F2999/00C08L27/06C08L33/04B22F3/1007B22F2201/20C08K3/041
Inventor 龚深李周肖柱蒋招汉王洋
Owner CENT SOUTH UNIV
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