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Viscoelastic damping magnetorheological elastomer material

An elastomer material and magnetic damping technology, which is applied in the field of viscoelastic damping magnetorheological elastomer materials, can solve the problems of increased stiffness, large shear storage modulus, and small loss factor, and achieve good damping performance and high reliability. Effect of tonality and low shear modulus

Inactive Publication Date: 2011-01-19
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the magnetorheological elastomer vibration isolation devices used are all made of ordinary rubber, which has a small loss factor and almost no energy dissipation characteristics.
At the same time, the shear storage modulus of ordinary rubber is large, which makes the magnetorheological elastomer based on it have a large stiffness at zero magnetic field, and its stiffness increases limitedly when an external magnetic field is applied. Obviously this Limits the tunability of magnetorheological elastomers, i.e., the frequency-shifting properties of fabricated devices

Method used

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Experimental program
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Embodiment Construction

[0020] The high-damping magnetorheological elastomer material of the present invention is formed by mixing a rubber matrix, magnetic particles, a reinforcing system, a vulcanization system, an anti-aging system, and processing aids. Among them, the rubber matrix is ​​bromobutyl rubber, the magnetic particles are carbonyl iron powder, the reinforcement system is a mixed system of high wear-resistant carbon black and 200 mesh graphite powder, the vulcanization system is vulcanization resin, zinc oxide, magnesium oxide, and the anti-aging system is anti-aging MBZ and anti-Naugard445, processing aids are 2203 modified resin and stearic acid. The dosage components of the above materials are:

[0021] Bromobutyl rubber 100 parts,

[0022] Carbonyl iron powder 365-569 parts,

[0023] 50 parts of high wear-resistant carbon black,

[0024] 40 parts of 200 mesh graphite powder,

[0025] 8 parts of WS vulcanized resin,

[0026] Zinc oxide 5 parts,

[0027] 0.4 parts of magnesium ox...

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Abstract

The invention discloses a viscoelastic damping magnetorheological elastomer material, which is characterized by being prepared by blending 100 parts of rubber substrate, 365 to 569 parts of magnetic particles, 0 to 110 parts of reinforcing system, 12 to 15 parts of vulcanizing system, 2 to 6 parts of anti-aging system, an operating assistant and a processing assistant. The viscoelastic damping magnetorheological elastomer material of the invention has high frequency shift property and energy consumption property in a service environment with the magnetic field intensity of 0 to 1,000mT, frequency of 0.1 to 50Hz and temperature of 20 DEG C below zero and 50 DEG C. And when a loss factor is between 0.5 and 0.9, the viscoelastic damping magnetorheological elastomer material can be used for making various intelligent shock isolating and absorbing devices.

Description

technical field [0001] The invention relates to a viscoelastic damping magnetorheological elastomer material used for vibration isolation devices of precision instrument platforms in the fields of machinery, aviation, aerospace, military industry and civil engineering. Background technique [0002] Magnetorheological elastomers are a newly developed smart material. It is composed of high molecular polymers (such as rubber, etc.) and magnetic particles. When mixing, the magnetorheological effect (that is, the magnetic particles form a chain or columnar aggregation structure in the direction of the magnetic field) is used to make the particles form an ordered structure in the matrix. Therefore, its modulus changes with the applied magnetic field. The magnetorheological elastomer is made into a vibration damping device, and the change of its modulus can be controlled by changing the external magnetic field in real time, so as to achieve the purpose of system vibration isolatio...

Claims

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Application Information

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IPC IPC(8): C08L23/28C08K13/02C08K3/18C08K3/04C08K3/22
Inventor 徐赵东朱俊涛
Owner SOUTHEAST UNIV
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