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CN-122008534-A - Method for manufacturing electromagnetic component with specified dielectric constant by 3D printing

CN122008534ACN 122008534 ACN122008534 ACN 122008534ACN-122008534-A

Abstract

The invention discloses a method for manufacturing an electromagnetic component with a specified dielectric constant by utilizing 3D printing, which relates to the technical field of electronic device manufacturing and comprises the following steps of determining working frequency and metamaterial unit size; the method comprises the steps of establishing a theoretical relation between a dielectric constant and a material volume ratio, selecting a specific structure of a metamaterial unit, regulating the volume ratio by changing structural parameters, manufacturing a sample by utilizing a 3D printing technology, testing the dielectric constant, establishing a functional relation between the structural parameters and the dielectric constant, reversely pushing structural parameter values of electromagnetic components with the required dielectric constant according to the functional relation, modeling according to the structural parameter values, and manufacturing the electromagnetic components with the required dielectric constant by utilizing the 3D printing technology.

Inventors

  • LUO YIQI
  • FAN ZIJUN
  • JIANG JIAOLONG

Assignees

  • 湖北查克科技有限责任公司

Dates

Publication Date
20260512
Application Date
20260115

Claims (10)

  1. 1. A method for manufacturing an electromagnetic component with a specified dielectric constant by utilizing 3D printing is characterized in that the dielectric constant is precisely regulated and controlled by designing a metamaterial unit structure and adjusting parameters thereof to control the volume ratio of materials, and the customized manufacturing is realized by combining a 3D printing technology, and the method comprises the following steps: Step one, determining the working frequency and the metamaterial unit size; step two, establishing a theoretical relation between the dielectric constant and the volume ratio of the material; selecting a specific structure of the metamaterial unit; Regulating and controlling the volume ratio by changing the structural parameters; step five, manufacturing a sample by using a 3D printing technology and testing the dielectric constant; Step six, establishing a functional relation between the structural parameters and the dielectric constant; step seven, reversely deducing the structural parameter value of the required dielectric constant electromagnetic component according to the functional relation; and step eight, modeling according to the structural parameter value, and manufacturing the required electromagnetic component by using a 3D printing technology.
  2. 2. The method for manufacturing an electromagnetic component with a specified dielectric constant by 3D printing according to claim 1, wherein the first step is to determine the working frequency range of the electromagnetic wave applicable to the metamaterial unit and calculate the corresponding wavelength; according to the equivalent medium theory in metamaterial research, the size of a metamaterial unit must be far smaller than the working wavelength, and when the size of the metamaterial unit is far smaller than the working wavelength, the unit can be equivalent to a uniform medium; accordingly, the dimension of a metamaterial unit is selected, and the dimension is generally smaller than 1/4, usually 1/5 or 1/10 of the working wavelength.
  3. 3. The method of manufacturing an electromagnetic component with a specific dielectric constant by 3D printing according to claim 1, wherein the second step is to form a metamaterial unit by dry air and one or more other materials, wherein the dielectric constant of the metamaterial unit is The dielectric constant of the dry air is The volume ratio of the metamaterial unit occupied by the dry air is The dielectric constant of material 1 is The volume ratio of the metamaterial unit occupied by the material 1 is Materials (materials) Is of the dielectric constant of Materials and materials The volume ratio of the metamaterial units is as follows ; According to a Brown linear model in LICHTENECKER-Rother (LR) equation, the dielectric constant calculation formula of the metamaterial unit is as follows: ; Wherein the duty ratio of the dry air is 。
  4. 4. A method for fabricating an electromagnetic component having a specified dielectric constant by 3D printing as defined in claim 3, wherein in the second step, the material composition of the metamaterial unit is fixed by changing the material Changing materials corresponding to dimensional properties of cell structures Is the volume ratio of (2) Thereby realizing the dielectric constant of the metamaterial unit Is customized, material The properties of the corresponding unit structure include structure wall thickness, gap thickness, neutral plane offset of TPMS, etc., and materials with different dielectric constants can be replaced The regulation of the maximum dielectric constant value of the metamaterial unit is realized, and the following explanation is carried out according to the fact that the metamaterial unit consists of dry air and another material.
  5. 5. The method of manufacturing an electromagnetic component with a specific dielectric constant by 3D printing according to claim 1, wherein the outer shape of the metamaterial unit is cuboid, square or polyhedron The directional dimensions may not be equal, but must meet the equivalent medium theory, i.e., much smaller than the operating wavelength; The interior of the cell may take a variety of configurations, including but not limited to a variety of three-dimensional cell configurations, and The method comprises the steps of, The method comprises the steps of, Types, other types include Gyroid, schwarz, diamond, lidinoid, splitP, neovius, and other custom cell structures; in addition, one or more unit cell structures can be used in a combined and overlapped mode; in addition, when the structure is selected, the mechanical strength and the electromagnetic performance of the selected structure can be influenced, and the structure is determined according to the practical application requirements.
  6. 6. The method for manufacturing an electromagnetic component with a specified dielectric constant by 3D printing according to claim 1, wherein the method comprises the following steps of Mode and manner of operation Wherein, the mode is Mainly changing the wall thickness of the unit structure, fixing the unit size, so as to change the volume ratio of the material Mode of operation Mainly keeping the wall thickness of the unit structure unchanged to change the pore size, i.e. to fix the wall thickness to change the volume ratio of the material ; In the mode In which a metamaterial unit type selects a cell structure The unit size is designed as The direction size is smaller than or equal to the metamaterial unit size in the first step; the structure in the unit is selected from a plurality of different fixed structure wall thickness series, specifically, the larger the structure wall thickness is, the material volume ratio is The larger the structure wall thickness is, the more the structure wall thickness is valued, and the function relation of the wall thickness and the dielectric constant established later is more accurate.
  7. 7. The method for manufacturing an electromagnetic component with a specified dielectric constant by 3D printing according to claim 6, wherein the method is as follows In which a metamaterial unit type selects a cell structure The material structure in the unit selects a fixed wall thickness Changing the thickness of the unilateral pore; The thickness of the unilateral pore is selected from a plurality of different size series, specifically, the larger the pore is, the material volume ratio is The smaller the pore thickness data is, the more the measured data is, and the later obtained wall thickness-dielectric constant function relation is more accurate; the dimension of the metamaterial unit is changed according to the thickness of a single-side pore, and the calculation formula is that the dimension of the unit is as follows The direction dimension is defined by a fixed wall thickness And the thickness of the pores on both sides of the wall thickness, which is smaller than or equal to the dimension of the metamaterial unit in the first step, Direction selection of a fixed dimension This dimension is less than or equal to the dimension of the metamaterial unit in step one.
  8. 8. The method for manufacturing an electromagnetic component with a specific dielectric constant by 3D printing according to claim 1, wherein the fifth step comprises dividing a fixed-size test piece model into a plurality of units according to the metamaterial unit size calculated in the fourth step before printing, and constructing corresponding inclusion modes by modeling software Three-dimensional model of wall thickness of different structures and containing mode Three-dimensional models of different pore sizes. Firstly, using modeling software to array metamaterial units, and combining the metamaterial units to generate an integral test piece model; The 3D printing technology is used for printing the test models of different structural parameters designed in the two modes, and particularly comprises a mode of printing different structural wall thicknesses and a mode of printing different pore thicknesses, wherein the 3D printing technology comprises, but is not limited to, fused deposition modeling FFF, stereoscopic light curing modeling SLA, digital light processing DLP, mask stereoscopic lithography MSLA, three-dimensional printing 3DP, selective laser sintering SLS, multi-jet fused MJF, adhesive jet BJ, material jet MJ and layered entity manufacturing LOM.
  9. 9. The method of manufacturing an electromagnetic component with a specific dielectric constant according to claim 8, wherein in the fifth step, an electromagnetic test instrument is used to test the dielectric constant of each corresponding test model at the operating frequency of electromagnetic waves, and corresponding data of the structural parameter X and the dielectric constant Y are recorded.
  10. 10. The method of manufacturing an electromagnetic component with a specified dielectric constant by 3D printing according to claim 8, wherein the step six is to use the established functional relationship between the structural parameters and the dielectric constant for customizing the design; Specifically, according to the test data, building the structural parameters of the model And the measured dielectric constant Is a graph of the correspondence of (a) to (b), Particularly, the cell wall thickness and the pore thickness are different; fitting by computer technique to obtain functional relation expression, i.e The functional relation of (2) is specifically a metamaterial unit structural parameter-dielectric constant function; Step seven, the parameters of the material structure in the required metamaterial unit can be reversely deduced by utilizing the functional relation according to the appointed dielectric constant value required by the practical application scene Values, specific parameters include structural wall thickness dimensions or gap thickness; and step eight, re-modeling according to the reversely deduced structural parameter value, namely designing a metamaterial unit structure based on reversely deduced parameters, dividing the component model into a plurality of metamaterial units, generating a final component model, and producing the electromagnetic component with the appointed dielectric constant by utilizing the same 3D printing technology of the previous printed dielectric test model.

Description

Method for manufacturing electromagnetic component with specified dielectric constant by 3D printing Technical Field The invention relates to the technical field of electronic device manufacturing, in particular to a method for manufacturing an electromagnetic component with a specified dielectric constant by utilizing 3D printing. Background The electromagnetic components with specific dielectric constants are the dielectric constants of the multicomponent mixed materials through accurate regulation and controlThe method is characterized in that the dielectric constant is used as a physical quantity for describing the capacity of a material for storing charges in an electric field, key performances such as capacitance, impedance, signal transmission and the like of the device are directly influenced, 3D printing is realized through material-structure cooperative regulation, a brand new paradigm is provided for manufacturing of the specified dielectric constant electromagnetic components, the method is characterized in that dielectric performance design is integrated into a printing process, span from static parameter customization to dynamic function regulation is realized, the current prior art comprises ‌ multi-material 3D printing electromagnetic coil technology, ‌ micro-nano 3D printing integrated optical system and ‌ co-reactive 3D printing technology, wherein the electromagnetic coil 3D printing technology developed by the Massa institute realizes integrated molding of electromagnets by modifying a multi-material printer, synchronously depositing dielectric materials, conductive materials and soft magnetic materials, the technology eliminates errors of traditional light assembly, the micro-nano 3D printing method proposed by Zhengzhou university realizes integrated molding of optical elements through a precise motion module and visual monitoring, dimensional errors of traditional assembly are avoided, and dynamic adjustment of material performance is realized through independent regulation and control of two reactive components; The current technology (such as MIT scheme) of 3D printing electromagnetic components does not realize the real-time dynamic adjustment of dielectric parameters in the printing process, ‌ has insufficient dielectric constant regulation, so that the device performance is limited, the coreactive printing is only suitable for a specific chemical system, and is difficult to be compatible with the complex requirement of electromagnetic functional materials, so that ‌ materials are limited in compatibility, the micro-nano printing technology relies on precise alignment and monitoring, ‌ process complexity is high, the manufacturing difficulty and cost are increased, and the traditional step-by-step processing causes insufficient bonding strength between an electromagnetic element and a dielectric layer, so that the long-term stability is influenced. Disclosure of Invention The invention provides a method for manufacturing an electromagnetic component with a specified dielectric constant by utilizing 3D printing, which can effectively solve the problems that the current technology (such as MIT scheme) of the 3D printing electromagnetic component does not realize the real-time dynamic adjustment of dielectric parameters in the printing process, the ‌ dielectric constant is regulated and controlled to be insufficient, the device performance is limited, the coreactive printing is only suitable for a specific chemical system and is difficult to be compatible with the complex requirement of electromagnetic functional materials, the ‌ material compatibility is limited, the micro-nano printing technology depends on precise alignment and monitoring, the ‌ process complexity is high, the manufacturing difficulty and the cost are increased, and the bonding strength between the electromagnetic component and a dielectric layer is insufficient and the long-term stability is influenced due to the traditional step-by-step processing. In order to achieve the above purpose, the invention provides a method for manufacturing an electromagnetic component with a specified dielectric constant by 3D printing, which controls the volume ratio of materials by designing a metamaterial unit structure and adjusting parameters thereof so as to precisely regulate and control the dielectric constant and realize customized manufacturing by combining a 3D printing technology, and comprises the following steps: Step one, determining the working frequency and the metamaterial unit size; step two, establishing a theoretical relation between the dielectric constant and the volume ratio of the material; selecting a specific structure of the metamaterial unit; Regulating and controlling the volume ratio by changing the structural parameters; step five, manufacturing a sample by using a 3D printing technology and testing the dielectric constant; Step six, establishing a functional relation between the structural parameters