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Preparation method for porous copper-based shape memory alloy-based damping composite material

A technology of damping composite material and memory alloy, which is applied in the field of damping material manufacturing, can solve problems such as deteriorating the mechanical properties of materials, and achieve the effect of good contact and improved contact.

Active Publication Date: 2014-04-16
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, compared with the viscoelastic polymer material, the porous CuAlMn shape memory alloy prepared by this method is still much lower in damping capacity. The mechanical properties of the material limit the wide application of the porous CuAlMn shape memory alloy as a damping material in the engineering field to a certain extent.

Method used

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  • Preparation method for porous copper-based shape memory alloy-based damping composite material
  • Preparation method for porous copper-based shape memory alloy-based damping composite material

Examples

Experimental program
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Effect test

Embodiment 1

[0029] The first step, pretreatment of porous CuAlMn shape memory alloy samples

[0030] Firstly, under the protection of high-purity argon, the quenched porous CuAlMn shape memory alloy sample was thermally cycled 5 times in the temperature range from room temperature to 350 °C, then placed in an ultrasonic cleaner, cleaned with deionized water for 20 minutes, and then washed with anhydrous Wash with ethanol for 20 minutes until the stains adhered to the outer surface of the porous CuAlMn shape memory alloy sample and the inner surface of the hole are removed;

[0031] The second step, the preparation of polystyrene-2-methyltetrahydrofuran solution

[0032]First, polystyrene: 2-methyltetrahydrofuran=1:4 according to the mass ratio, get the required amount of 2-methyltetrahydrofuran solvent, weigh the polystyrene of the proportioning amount at the same time, then put the weighed polystyrene Mix ethylene and 2-methyltetrahydrofuran solvent, and stir with a magnetic stirrer for...

Embodiment 2

[0038] The first step, pretreatment of porous CuAlMn shape memory alloy samples

[0039] First, under the protection of high-purity argon, the quenched porous CuAlMn shape memory alloy sample was thermally cycled 5 times in the temperature range from room temperature to 350 °C, then placed in an ultrasonic cleaner, cleaned with deionized water for 25 minutes, and then washed with anhydrous Wash with ethanol for 25 minutes until the stains adhered to the outer surface of the porous CuAlMn shape memory alloy sample and the inner surface of the hole are removed;

[0040] The second step, the preparation of polystyrene-2-methyltetrahydrofuran solution

[0041] First, polystyrene: 2-methyltetrahydrofuran=1:5 according to the mass ratio, take the required amount of 2-methyltetrahydrofuran solvent, weigh the polystyrene of the proportioning amount at the same time, then put the weighed polystyrene Mix ethylene and 2-methyltetrahydrofuran solvent, and stir with a magnetic stirrer for...

Embodiment 3

[0049] The first step, pretreatment of porous CuAlMn shape memory alloy samples

[0050] First, under the protection of high-purity argon, the quenched porous CuAlMn shape memory alloy sample was thermally cycled 6 times in the temperature range from room temperature to 350 °C, then placed in an ultrasonic cleaner, cleaned with deionized water for 25 minutes, and then washed with anhydrous Wash with ethanol for 25 minutes until the stains adhered to the outer surface of the porous CuAlMn shape memory alloy sample and the inner surface of the hole are removed;

[0051] The second step, the preparation of polystyrene-2-methyltetrahydrofuran solution

[0052] First, polystyrene: 2-methyltetrahydrofuran=1:6 according to the mass ratio, get the required amount of 2-methyltetrahydrofuran solvent, weigh the polystyrene of the proportioning amount at the same time, then put the weighed polystyrene Mix ethylene and 2-methyltetrahydrofuran solvent, and stir with a magnetic stirrer for ...

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Abstract

The invention discloses a preparation method for a porous copper-based shape memory alloy-based damping composite material and relates to preparation of damping materials. The method comprises the following steps of: performing thermal circulation and ultrasonic cleaning on a quenching-state porous CuAlMn shape memory alloy sample to remove stains adhered to the outer surface of the sample and the inner surfaces of pores; immersing the sample in a polystyrene-2-methyltetrahydrofuran solution, and performing ultrasonic oscillation until the polystyrene-2-methyltetrahydrofuran solution is fully permeated into the pores of the porous CuAlMn shape memory alloy sample, which are communicated in a three-dimensional way; and finally drying until the 2-methyltetrahydrofuran solvent is volatilized completely to prepare a porous copper-based shape memory alloy-based damping composite material finished product, wherein polystyrene layers are deposited in the pores of the porous CuAlMn shape memory alloy. The finished product is high and controllable in damping property, and overcomes the defect that the stress concentration or microcracks are easily generated on edges of pore walls under the external load in the conventional CuAlMn shape memory alloy.

Description

technical field [0001] The technical solution of the invention relates to the manufacture of damping materials, in particular to the preparation method of porous copper-based shape memory alloy-based damping composite materials. 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. Therefore, vibration reduction and noise reduction, improvement of human-machine working environment, and design and production of products with low vibration and noise have become problems to be solved urgently. Studies have shown that the use of high damping materials is the most effective means of reducing vibration and noise. [0003] At present, damping materials with practical prospects can be mainly divided into two categories, one is damping metal materials, and the other is viscoelastic polymer materials. Although ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/08C22C9/00
Inventor 王清周陆东梅崔春翔闫娜君李诺王倩
Owner HEBEI UNIV OF TECH
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