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A Rapid Prototyping Method for Magnetorheological Composite

A magnetorheological and composite technology, which is applied in the direction of manufacturing tools, additive manufacturing, and additive processing, can solve the problems of poor performance of heterogeneous magnetorheological composites, improve production efficiency, economy, and good performance , the effect of simple process

Active Publication Date: 2021-10-29
无锡德昕新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a rapid prototyping method for magnetorheological composites, which is used to solve the problem of poor performance of heterogeneous magnetorheological composites manufactured in conventional ways

Method used

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  • A Rapid Prototyping Method for Magnetorheological Composite
  • A Rapid Prototyping Method for Magnetorheological Composite
  • A Rapid Prototyping Method for Magnetorheological Composite

Examples

Experimental program
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Effect test

Embodiment 1

[0041] In this embodiment, the fusion wire deposition method (Fused Deposition Modeling, FDM) and the pressurized injection method are used to realize the manufacture of the magnetorheological composite. The FDM method has the advantages of a wide range of available materials, low cost, high production efficiency, and easy production. It is currently the 3D printing technology with the highest degree of commercialization and the widest range of applications. The pressurized injection method of this embodiment is realized by using a driving mechanism and a pressurizing device. Specifically, the driving mechanism is a servo controller, and the control accuracy of the servo controller is higher. As other implementation modes, a general controller can be used; The pressure device adopts the principle of a piston to achieve the purpose of pressurized injection, and as another embodiment, the principle of a screw can also be used to achieve the purpose of pressurized injection. The ...

Embodiment 2

[0055] The steps of this embodiment and embodiment 1 are basically the same, the difference is:

[0056] Such as Figure 12 , the type I magnetorheological elastic material 4 forms a cavity, which is not filled with the magnetorheological viscoplastic material 7, that is to say, the position where the magnetorheological viscoplastic material 7 is filled into the cavity is lower than the cavity The upper surface of the body, and then continue to deposit the type I magnetorheological elastic material 4 on the surface of the filled magnetorheological viscoplastic material 7 to form a "cover" 22, which only encapsulates the cavity.

Embodiment 3

[0058] Such as Figure 13 , the heating nozzle 8 deposits the type I magnetorheological elastic material 4 to form a relatively shallow cavity, and then, the extrusion nozzle 2 fills the cavity with the magnetorheological viscoplastic material 7; on this basis, the soft The depth of the cavity formed by the film matrix, and accordingly, the magnetorheological elastic material in the cavity also gradually increases, that is, the heating nozzle 8 and the extrusion nozzle 2 operate alternately, and the type I magnetorheological elastic material 4 and the magnetorheological viscous The plastic material 7 is printed layer by layer; finally, the heating nozzle 8 is used to print the type I magnetorheological elastic material 4 to form a "cap" 21 to complete the package.

[0059] In this implementation example, the minimum height of each deposition is the lowest printing height of the FDM method, that is, 0.2 mm, and the maximum height of each deposition is less than or equal to 0.6 ...

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Abstract

The invention provides a rapid prototyping method of a magnetorheological composite body, in which a type I magnetorheological elastic material, a type II magnetorheological elastic material, a type I magnetorheological elastic material and a magnetorheological viscoplastic material are used in any The required forms are combined to prepare a magnetorheological composite with non-uniform physical properties. The mixed 3D printing of magnetorheological materials with different physical states and mechanical properties is realized, and flexible digital structure design can be carried out. The forming of solid magnetorheological elastic materials and the packaging of semi-solid magnetorheological viscoplastic materials can be completed at one time. By virtue of the different response characteristics of the mechanical properties of different types of magnetorheological materials under an external magnetic field, it can meet the requirements of complex operating conditions that require magnetorheological materials with different mechanical properties in different positions. The composite prepared by the method of the invention can be used as various functional elements and structural elements such as shock absorbing and damping elements or soft molds for plate forming, and has good performance; meanwhile, the method of the invention has short period, simple process and low cost.

Description

technical field [0001] The invention belongs to the technical field of composite material forming, and in particular relates to a rapid forming method of a magnetorheological composite body. Background technique [0002] At present, magnetorheological fluid, as a smart material, is considered to be a new smart material with the most development potential in the field of material science because of its unique magnetorheological effect and good rheological properties. At present, magnetorheological fluids have been widely used in dampers, shock absorbers, magnetorheological polishing and magnetorheological sealing. The magnetorheological effect refers to the addition of a magnetically conductive, non-soluble medium to the fluid. Under the action of an external magnetic field, the rheological properties of the fluid undergo a sudden change, rapidly solidify and lose fluidity, and the solidification process is transiently reversible. [0003] In order to further develop researc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C64/118B29C64/20B33Y30/00B33Y10/00
Inventor 相楠郭俊卿皇涛李露宋亚虎马窦琴
Owner 无锡德昕新材料科技有限公司
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