Preparation method of magnetorheological elastomer with high heat resistance and tensile properties

A magnetorheological elastomer, high heat-resistant technology, applied in the direction of magnetic objects, magnetic materials, circuits, etc., can solve the problem of affecting the mechanical strength and stability of magnetorheological elastomers, molecular chain non-polarity, and low magnetorheological effect and other issues, to achieve the effect of enhancing the pre-structure effect, improving compatibility, weather resistance and heat resistance
CN108727710BActive Publication Date: 2019-12-17CHONGQING UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHONGQING UNIV
Publication Date
2019-12-17

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Abstract

The invention provides a method for preparing a magnetorheological elastomer with high heat resistance and tensile properties, comprising the following steps: a. Mixing modified carbonyl iron powder, silane coupling agent and methyl vinyl in an internal mixer The silicone rubber is mixed evenly, so that the surface of carbonyl iron powder is coated with a polymer composed of methyl vinyl silicone rubber and silane coupling agent, and then EPDM rubber, plasticizer and reinforcing particles are added for full mixing. Refining to obtain the mixed rubber; b. Put the mixed rubber in the open mill, add anti-aging agent and vulcanizing agent to carry out the rolling and rolling, and then inject the obtained material into the mold, and carry out pre-structural treatment under the magnetic field , and then vulcanized on a flat vulcanizer to obtain a magnetorheological elastomer with high heat resistance and tensile properties. The preparation method of the invention can overcome the technical difficulties in preparing the magnetorheological elastomer by using the EPDM rubber, and exert its excellent performance.
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Description

technical field

[0001] The invention relates to the technical field of intelligent materials used in vibration reduction and noise reduction, in particular to a preparation method of a magnetorheological elastomer with high heat resistance and tensile properties. Background technique

[0002] Magneto-rheological elastomer is a magnetically controlled smart material prepared by dispersing micron-sized magnetic particles into polymer elastomers. It not only has the excellent mechanical properties of particle-reinforced composite materials, but also has rapid, continuous and reversible magnetic properties. It has broad application prospects in the fields of vibration isolation buffer, magnetic control sensing, vibration reduction and sound absorption, etc. However, in terms of the magnetomechanical properties of magnetorheological elastomers, there is a certain contradiction between the magnetorheological effect and the mechanical strength. The currently prepared magnetorheolo...

Claims

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