Air bag type magnetorheological elastomer, and preparation method and application thereof

Abstract

The invention provides an air bag type magnetorheological elastomer, and a preparation method and an application thereof. The air bag type magnetorheological elastomer comprises the following components by weight: 100 to 150 parts of a rubber matrix, 600 to 700 parts of magnetic particles, 16 to 25 parts of a vulcanizing agent, 4 to 5 parts of an accelerator, 20 to 30 parts of a plasticizer, 30 to50 parts of a dispersant, 50 to 60 parts of a compatibilizer, 10 to 20 parts of a reinforcing agent, 10 to 30 parts of a physical silica gel pore-forming agent and 10 to 30 parts of a waterproofing agent. Through mutual cooperation and synergy of the components of the elastomer, the bond energy and compatibility between the magnetic particles and the matrix are improved; the damping performance of the magnetorheological elastomer is improved; and a plurality of air bags are rich in elasticity, so good mechanical properties are achieved. When an external magnetic field is applied to the airbag-type magnetorheological elastomer, the response to mechanical properties of the airbag-type magnetorheological elastomer can be rapid and is reversibly and accurately controlled. The air bag in the elastomer plays the role of active sound absorption and noise reduction control. Due to the unique magnetorheological behavior, the magnetorheological elastomer is applicable to popularization and application in the fields of vibration reduction, sound absorption and noise reduction.

Description

technical field [0001] The invention belongs to the technical field of smart materials for vibration reduction and sound absorption and noise reduction, and specifically relates to an airbag-type magnetorheological elastomer, a preparation method and an application. Background technique [0002] With the increasing use of vehicles in our country, the problems of road and bridge vibration and noise caused by automobiles are becoming more and more serious. Due to the characteristics of magnetorheological materials, they are widely used in the fields of vibration reduction and sound absorption and noise reduction. However, magnetorheological fluids have disadvantages such as easy particle settlement, difficult liquid sealing, and poor stability. Since magnetorheological elastomer materials overcome the above disadvantages while maintaining the advantages of magnetorheological fluids and elastomers, magnetorheological elastomer materials have better application prospects. As an...

AI Technical Summary

Problems solved by technology

As an emerging smart material, magnetorheological elastomer has no uniform preparation method, and there are some problems

For example, there are problems such as poor interface bonding performance between magnetic particles and the matrix, poor damping performance at room temperature, and poor mechanical properties, resulting in a certain gap between the performance of the prepared magnetorheological elastomer and the actual engineering application.

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