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A kind of foamed Lumber lens and its preparation process

A preparation process and lens technology, applied in additive processing, antennas, electrical components, etc., can solve the problems of complex preparation process, inability to ensure the accuracy of the dielectric constant of each layer, and the heavy weight of Lunbo lenses, and achieve uniform structure, Avoid multi-layer foaming, the effect of accurate dielectric constant

Active Publication Date: 2022-02-01
SHINCELL NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] For this reason, the technical problem to be solved by the present invention is to overcome the shortcomings of the existing Lumbo lens, which is heavy in weight, complicated in the preparation process, or unable to ensure the accuracy of the dielectric constant of each layer, and to provide a foamed Lumbo lens and its preparation process

Method used

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  • A kind of foamed Lumber lens and its preparation process
  • A kind of foamed Lumber lens and its preparation process
  • A kind of foamed Lumber lens and its preparation process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The present embodiment provides a kind of preparation method of foamed Lumber lens, uses polypropylene (ε A =2.3) As a resin material, barium titanate (ε B =1400) as a dielectric regulator, the specific steps are as follows:

[0028] (1) Confirm that the preparation radius R=200mm, foaming magnification n=20 foaming Lunbo lens, its number of layers m=5, the dielectric constant of each layer after setting foaming is respectively: ε 1 = 2, ε 2 = 1.8, ε 3 = 1.5, ε 4 = 1.25, ε 5 = 1.065;

[0029] (2) According to ε i ’=n×(ε i -1)+1 and δ i =[R×(2-ε i+1 ) 1 / 2 -R×(2-ε i ) 1 / 2 】 / n 1 / 3 , and the first layer r 1 =[R×(2-ε 2 ) 1 / 2 】 / n 1 / 3 , the mth layer thickness δ m＝ 【R-R×(2-ε m ) 1 / 2 】 / n 1 / 3 , to obtain the information of the spherical blank mold to be prepared, as shown in Table 1 below:

[0030] The spherical blank mold data that needs to be prepared in the embodiment 1 of table 1

[0031]

[0032]

[0033] (3) Configure the 3D printing substrate ...

Embodiment 2

[0039] The present embodiment provides a kind of preparation method of foamed Lumber lens, uses polypropylene (ε A =2.3) As a resin material, barium titanate (ε B =1400) as a dielectric regulator, the specific steps are as follows:

[0040] (1) Confirm that the preparation radius R=500mm, the foaming Lumber lens of foaming magnification n=25, its number of layers m=9, the dielectric constant of each layer after setting foaming is respectively: ε 1 = 2, ε 2 = 1.9, ε 3 = 1.75, ε 4 = 1.6, ε 5 = 1.45, ε 6 = 1.3, ε 7 = 1.2, ε 8 = 1.1, ε 9 = 1.052;

[0041] (2) According to ε i’=n×(ε i -1)+1 and δ i =[R×(2-ε i+1 ) 1 / 2 -R×(2-ε i ) 1 / 2 】 / n 1 / 3 , and the first layer r 1 =[R×(2-ε 2 ) 1 / 2 】 / n 1 / 3 , the mth layer thickness δ m＝ 【R-R×(2-ε m ) 1 / 2 】 / n 1 / 3 , to obtain the information of the spherical base mold that needs to be prepared, as shown in Table 3 below:

[0042] The spherical blank mold data that needs to be prepared in the embodiment 2 of table 3

[0043...

Embodiment 3

[0050] The present embodiment provides a kind of preparation method of foamed Lumber lens, uses polypropylene (ε A =2.3) As a resin material, titanium dioxide (ε B =114) as a dielectric regulator, the specific steps are as follows:

[0051] (1) Confirm that the preparation radius R=1000mm, the foaming Lumber lens of foaming magnification n=30, its layer number m=7, the dielectric constant of each layer after setting foaming is respectively: ε 1 = 2, ε 2 = 1.75, ε 3 = 1.53, ε 4 = 1.35, ε 5 = 1.2, ε 6 = 1.1, ε 7 = 1.04;

[0052] (2) According to ε i ’=n×(ε i -1)+1 and δ i =[R×(2-ε i+1 ) 1 / 2 -R×(2-ε i ) 1 / 2 】 / n 1 / 3 , and the first layer r 1 =[R×(2-ε 2 ) 1 / 2 】 / n 1 / 3 , the mth layer thickness δ m＝ 【R-R×(2-ε m ) 1 / 2 】 / n 1 / 3 , to obtain the information of the spherical base mold that needs to be prepared, as shown in Table 5 below:

[0053] The spherical blank mold data that needs to be prepared in the embodiment 3 of table 5

[0054]

[0055]

[0056] ...

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Abstract

The invention discloses a preparation process of a foamed Lumber lens, which is characterized in that it comprises the following steps: designing the expansion ratio of the m-layer foamed Lumber lens to be obtained and the size and dielectric constant of each layer, wherein 5 ≤m≤15; according to the mass ratio of the dielectric modifier, the resin material and the dielectric regulator are fully mixed and then configured into m parts of 3D printing substrates; through the fused deposition molding method, use a 3D printer to sequentially make m parts of 3D printing materials The printing base material is printed as a spherical structure of m layers to obtain a spherical blank mold; finally, the spherical blank mold is impregnated with supercritical fluid, and the pressure is released and foamed to obtain a foamed Lumber lens. The invention uses a dielectric regulator to adjust the foamable resin material as a 3D printing base material, uses a fused deposition molding method to obtain a Lumber lens sphere embryo mold, and uses supercritical fluid to physically foam to obtain a foamed Lumber lens. The method is simple, The operation is convenient, and the dielectric constant of each layer of the printed foamed Lumber lens is precisely and controllable.

Description

technical field [0001] The invention relates to the field of polymer material processing, in particular to a foamed Lumber lens and a preparation process thereof. Background technique [0002] The Longbo lens antenna is an onion-shaped centrally symmetrical sphere made of gradient dielectric materials. Its principle is similar to the focusing principle of an optical lens. The collection of electromagnetic wave signals into high-gain, narrow-beam electromagnetic wave signals has broad application prospects in satellite communications, radar, radio astronomy, and holographic imaging. Especially in recent years, with the large-scale construction of 5G antennas, Longbo lens has been focused on again. However, due to the difficulty in processing and producing Longbo lens antennas, high cost, and heavy weight, Longbo lens antennas are rarely used in civilian applications. [0003] Chinese patent document CN101057370A discloses a Lumber lens made of expanded beads of thermoplasti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q15/02H01Q19/06B33Y10/00B33Y80/00
CPCH01Q15/02H01Q19/06B33Y10/00B33Y80/00
Inventor 李期筠姜修磊余加保
Owner SHINCELL NEW MATERIAL CO LTD
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