High-performance giant electrorheological elastomer and preparation and test method thereof

Abstract

The invention relates to the technical field of chemical engineering, in particular to a high-performance giant electrorheological elastomer and a preparation and test method thereof. The high-performance giant electrorheological elastomer comprises electrorheological particles, conductive metal particles, a PDMS polymer and silicone oil; the electrorheological particles and the conductive metal particles form double dispersed phases; the PDMS polymer and the silicone oil form a bicontinuous phase; the electrorheological particles and the conductive metal particles are dispersed in the bicontinuous phase; the conductive metal particles are made of gold and silver; the conductive metal particles are sheet-shaped; and the particle size of the conductive metal particles is 0.1-100 microns. The preparation method has the following advantages that the compression modulus in the direction parallel to an electric field and the shear modulus in the direction perpendicular to the electric field are improved by adding the conductive metal particles and optimizing the adding amount, meanwhile, the problem of conductive breakdown is avoided, and meanwhile, the relatively high electrorheological effect is achieved by adding the urea-wrapped titanoxyl barium oxalate; and an external electric field can be quickly responded, and good time stability and good self-healing performance are achieved.

Description

technical field [0001] The invention relates to the technical field of chemical engineering, in particular to a high-performance giant electrorheological elastomer and its preparation and testing methods. Background technique [0002] Electrorheological elastomer (BTRU) has many excellent properties, such as not easy to leak liquid, simple device structure design, good environmental adaptability, etc., which has attracted more and more attention of scientific researchers. Since the damping and stiffness characteristics of electrorheological elastomers can be controlled by electric field strength, they have broad application prospects in bridge construction, aerospace, and precision instrument control shock absorption, especially in the fields of artificial muscles and electric drives. Has important application value. [0003] The inventors of the present invention have discovered that the electrorheological elastomer has the following disadvantages: the relative electrorheo...

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Problems solved by technology

[0003] The inventors of the present invention have discovered that electrorheological elastomers have the following disadvantages: the relative electrorheological effect is not high, thereby limiting the range of stiffness regulation

In the prior art, people improve the relative electrorheological effect of electrorheological elastomers by preparing different particles, changing the polymer matrix, improving the interface between particles and the matrix, etc., especially preparing isotropic electrorheological elastomers, improving The relative electrorheological effect of electrorheological elastomers has always been in the shear modulus in the direction perpendicular to the electric field, but it is difficult to improve the compressive modulus in the direction parallel to the electric field. The above shortcomings are difficult to meet in bridge construction, aerospace, Applied in the control shock absorption of precision instruments; adding conductive materials to electrorheological elastomers can improve the relative electrorheological effect in principle, but due to its high conductivity, it is easy to increase the risk of breakdown of electrorheological elastomers, and there has been no relevant research progress

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