Foaming Luneberg lens and production process thereof

A preparation process and lens technology, applied in the direction of additive processing, electrical components, antennas, etc., can solve the problems that the accuracy of the dielectric constant of each layer cannot be guaranteed, the weight of Longbo lens is large, and the preparation process is complicated.

Active Publication Date: 2021-04-30
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, com

Method used

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  • Foaming Luneberg lens and production process thereof
  • Foaming Luneberg lens and production process thereof
  • Foaming Luneberg lens and production process thereof

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 production process of a foaming Luneberg lens. The process is characterized by comprising the following steps: designing the foaming ratio of m layers of foaming Luneberg lenses to be obtained and a size and a dielectric constant of each layer, wherein the m is greater than or equal to 5 and less than or equal to 15; fully mixing a resin material and a dielectric regulator according to the mass ratio of a dielectric regulator, and then sequentially preparing m parts of 3D printing base materials; through a fused deposition modeling method, sequentially printing the m parts of 3D printing base materials into m layers of spherical structures through a 3D printer, and acquiring a spherical blank mold; and finally, impregnating the spherical blank mold with a supercritical fluid, and performing pressure relief foaming to obtain the foaming Luneberg lens. The dielectric modifier is used for adjusting the foamable resin material to serve as a 3D printing base material, a fused deposition modeling method is used for obtaining a Luneberg lens sphere blank mold, the supercritical fluid physical foaming is used for obtaining the foaming Luneberg lens, the method is simple and convenient to operate, and the dielectric constant of each layer of the printed foaming Luneberg lens is accurate 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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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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