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Preparation method of highly magneto-rheological silicone rubber-based magneto-rheological elastomer

A magnetorheological elastomer and rheological technology, applied in the field of magnetorheological materials, can solve the problems of reducing the magnetorheological properties of elastomers, poor mechanical properties of composite elastomers, and affecting the scope of use, so as to improve the distribution and magnetic flow Increased variable effect and improved rheological properties

Inactive Publication Date: 2017-12-01
常州市瑞泰物资有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem mainly solved by the present invention: aiming at the uneven distribution of the existing silicone rubber-based magnetorheological elastomers, which not only leads to poor mechanical properties of the composite elastomers, but also reduces the magnetorheological properties of the elastomers and affects its scope of use, providing A preparation method of high magnetorheological silicone rubber-based magnetorheological elastomer

Method used

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  • Preparation method of highly magneto-rheological silicone rubber-based magneto-rheological elastomer

Examples

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example 1

[0013] First, mix ferric citrate and ferric nitrate with deionized water at a mass ratio of 1:1:10, and mix at 45°C for 15 minutes to prepare a mixed solution of iron ions. Then, at a mass ratio of 1:5, mix 100 mesh Graphite oxide was stirred and mixed with iron ion mixture for 25 minutes, then left to age for 3 hours, and then dried at 65°C for 6 hours; after the drying was completed, dry crystals were obtained and placed in a crucible, and heated at a rate of 10°C / min to 550°C, heat preservation and calcination for 1 hour, then let it stand and cool to room temperature to obtain calcined granules. Stir and mix the calcined granules and carbonyl iron powder at a mass ratio of 1:5, then ball mill at 350r / min for 2 hours, and pass through a 200-mesh sieve to obtain mixed ball mills. powder; according to the mass ratio of 1:8, mix the mixed ball mill powder and liquid silicone rubber LSR and place it in a high-speed shearing machine. After shearing for 25 minutes, ultrasonically ...

example 2

[0015] First, according to the mass ratio of 1:1:10, ferric citrate and ferric nitrate were stirred and mixed with deionized water, and after mixing at 48°C for 18 minutes, the iron ion mixed solution was prepared, and then according to the mass ratio of 1:5, 100 mesh Graphite oxide was stirred and mixed with the iron ion mixture for 28 minutes, then left to age for 4 hours, and then dried at 68°C for 7 hours; after the drying was completed, the dried crystals were obtained and placed in a crucible, and heated at a rate of 10°C / min to Calcined at 580°C for 2 hours and then cooled to room temperature to obtain calcined particles. The calcined particles and carbonyl iron powder were stirred and mixed at a mass ratio of 1:5, and then ball milled at 380r / min for 3 hours, and passed through a 200-mesh sieve to obtain a mixed ball mill. powder; according to the mass ratio of 1:8, the mixed ball mill powder and liquid silicone rubber LSR were stirred and mixed and placed in a high-spe...

example 3

[0017] First, according to the mass ratio of 1:1:10, ferric citrate and ferric nitrate were stirred and mixed with deionized water, and after mixing at 50°C for 20 minutes, the iron ion mixed solution was prepared, and then according to the mass ratio of 1:5, 100 mesh Graphite oxide was stirred and mixed with the iron ion mixture for 30 minutes, then left to age for 5 hours, and then dried at 70°C for 8 hours; after the drying was completed, dry crystals were obtained and placed in a crucible, and heated at a rate of 10°C / min to Calcined at 600°C for 2 hours and then cooled to room temperature to obtain calcined particles. The calcined particles and carbonyl iron powder were stirred and mixed at a mass ratio of 1:5, and then ball milled at 400r / min for 3 hours, and passed through a 200-mesh sieve to obtain a mixed ball mill. powder; according to the mass ratio of 1:8, mix the mixed ball mill powder and liquid silicone rubber LSR and place it in a high-speed shearing machine. Af...

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Abstract

The invention discloses a preparation method of a highly magneto-rheological silicone rubber-based magneto-rheological elastomer and belongs to the field of magneto-rheological materials. The preparation method comprises the following steps: dissolving ferric citrate and ferric nitride in water; compounding and drying with graphite oxide and calcining the same; then compounding and ball-milling with carboxyl ferric powder and mixing with liquid silicone rubber; shearing and ultrasonically treating the mixture to prepare conductive liquid silicone rubber; then electrifying the silicone rubber to generate a magnetic field; distributing the carboxyl ferric powder and ferric oxide powder complying with the magnetic field; and finally, leaving the mixture to stand and cure to obtain a highly rheological elastomer. According to the highly magneto-rheological silicone rubber-based magneto-rheological elastomer prepared by the preparation method disclosed by the invention, the magneto-rheological effect is enhanced greatly by improving distribution of inner magnetic particles, and the tensile strength and the rebound resilience of silicone rubber are enhanced greatly by preparing the uniformly distributed silicone rubber-based magneto-rheological elastomer. The preparation process is safe and green and free of pollution.

Description

technical field [0001] The invention discloses a preparation method of a high magnetorheological silicone rubber-based magnetorheological elastomer, belonging to the field of magnetorheological materials. Background technique [0002] Magnetorheological material is a new type of intelligent material developed in recent decades. Because it has a special physical effect - magnetorheological effect, magnetorheological material is a new type of functional material whose mechanical properties can be controlled by a magnetic field. . Because of its fast response, good reversibility, and the continuous change of the mechanical properties of the material can be controlled by adjusting the magnitude of the magnetic field, it has been widely used in construction, automobile, vibration control and other fields in recent years. Magnetorheological elastomer is a new member of the family of magnetorheological materials. It is formed by mixing micron or nanoscale ferromagnetic particles ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/04C08K3/22C08K3/04C08K3/08H01F1/44
CPCH01F1/447C08K3/04C08K3/08C08K3/22C08K2003/0856C08K2003/2272C08K2201/01C08L83/04
Inventor 陈刚王艳芹
Owner 常州市瑞泰物资有限公司
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