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Magnetorheological elastomer based on microfluidic spinning technology and preparation method thereof

A magnetorheological elastomer, spinning technology, applied in the manufacture of rayon, textiles and paper, conjugated synthetic polymer rayon, etc., can solve the complex preparation method, weak rheology, magnetorheological elastomer The problem of low magneto-induced effect, etc., to achieve the effect of simple preparation method, high magneto-induced effect, and overcoming easy sedimentation

Active Publication Date: 2021-11-02
QINGDAO UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In the above-mentioned patents, although the use of silicone rubber for encapsulation can also achieve the purpose of preventing the settlement of magnetic particles in magnetorheological elastomers, the micron-sized soft magnetic particles are dispersed in viscoplastic silicone rubber, and the magnetic properties in silicone rubber Compared with the magnetorheological liquid, the rheology of the particles is relatively weak, so the magnetotropic effect of the magnetorheological elastomer is relatively low, and the above preparation method is relatively complicated

Method used

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  • Magnetorheological elastomer based on microfluidic spinning technology and preparation method thereof
  • Magnetorheological elastomer based on microfluidic spinning technology and preparation method thereof

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Embodiment 1

[0026] A magnetorheological elastomer based on microfluidic spinning technology, the magnetorheological elastomer is prepared by using microfluidic spinning technology, with thermoplastic elastomer solution as the skin layer, magnetorheological fluid and thermoplastic elastomer solution The magneto-rheological elastic fiber is a sheath-core structure with a core layer, wherein the magnetorheological fluid is filled into the core layer in an intermittent filling manner.

[0027] In this embodiment, the carbonyl iron iron content in the magnetorheological fluid is 30wt%, the thermoplastic elastomer is SEBS, and the mass fraction of the SEBS solution is 45%, and the interval length of the magnetorheological material in the fiber core layer can be arbitrary according to actual needs. adjust. Specifically, the filling volume of the magnetorheological fluid can be adjusted through the programmable filling method, so that the elastic body can exhibit different mechanical properties a...

Embodiment 2

[0036] A magnetorheological elastomer based on microfluidic spinning technology, the magnetorheological elastomer is prepared by using microfluidic spinning technology, with thermoplastic elastomer solution as the skin layer, magnetorheological fluid and thermoplastic elastomer solution The magneto-rheological elastic fiber is a sheath-core structure with a core layer, wherein the magnetorheological fluid is filled into the core layer in an intermittent filling manner.

[0037] In this embodiment, the iron content in the magnetorheological fluid is 70wt%, the thermoplastic elastomer is SEBS, and the mass fraction of the SEBS solution is 20%, and the interval length of the magnetorheological material in the fiber core layer can be adjusted arbitrarily according to actual needs. Specifically, the filling volume of the magnetorheological fluid can be adjusted through the programmable filling method, so that the elastic body can exhibit different mechanical properties at different ...

Embodiment 3

[0044] A magnetorheological elastomer based on microfluidic spinning technology. The magnetorheological elastomer is prepared by using microfluidic spinning technology. The thermoplastic elastomer solution is used as the skin layer, and the magnetorheological fluid and thermoplastic elastomer solution are A magnetorheological elastic fiber with a sheath-core structure of the core layer, wherein the magnetorheological fluid is filled into the core layer in an intermittent filling manner.

[0045] In this embodiment, the iron content in the magnetorheological fluid is 70wt%, the thermoplastic elastomer is SEBS, and the interval length of the magnetorheological materials in the fiber core layer can be adjusted arbitrarily according to actual needs. Specifically, the filling volume of the magnetorheological fluid can be adjusted through the programmable filling method, so that the elastic body can exhibit different mechanical properties at different positions.

[0046] A method fo...

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Abstract

The invention relates to the technical field of magnetorheological elastomers, in particular to a magnetorheological elastomer based on a microfluidic spinning technology. The magnetorheological elastomer is a magnetorheological elastic fiber with a skin-core structure, is prepared by using a microfluidic spinning technology and takes a thermoplastic elastomer solution as a skin layer and magnetorheological fluid and the thermoplastic elastomer solution as a core layer, and the magnetorheological fluid is filled into the core layer in an intermittent filling mode. The invention further provides a preparation method of the magnetorheological elastomer based on the microfluidic spinning technology. The preparation method is simple, and the magnetorheological elastomer obtained through the preparation method can be used in damping devices, vibration isolation devices and the like. Meanwhile, the technical problems that the magnetorheological fluid is prone to settling and a traditional magnetorheological elastomer is poor in magnetostrictive effect can be solved, and the magnetorheological elastomer is worthy of being widely applied and popularized.

Description

technical field [0001] The invention relates to the technical field of magnetorheological elastomers, in particular to a magnetorheological elastomer based on microfluidic spinning technology and a preparation method thereof. Background technique [0002] Magnetorheological material is an intelligent soft material prepared by dispersing micro-nano-scale soft magnetic particles in different carriers. Its rheological properties can change continuously, rapidly and reversibly with the external magnetic field. The field of semi-active vibration control has broad application prospects. Magneto-rheological fluid is the earliest developed magnetic-sensitive intelligent soft material. It is generally a particle suspension system prepared by mixing micron-sized ferromagnetic particles into non-magnetic liquid. After applying a magnetic field, the magnetorheological fluid will It quickly changes from a liquid state similar to Newtonian fluid to a solid state, and the apparent viscosi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/10D01F1/10
CPCD01F8/10D01F1/10Y02P70/62
Inventor 周彦粉孙保杰李晨晨李东亮王之惠江亮陈韶娟
Owner QINGDAO UNIV
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