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High dielectric constant polytetrafluoroethylene film and its preparation method and application

A technology of polytetrafluoroethylene and high dielectric constant, applied in the field of 5G communication, can solve the problems of limited application scenarios and narrow adjustable range

Active Publication Date: 2022-05-17
ZHEJIANG DEQING CONCEPTFE PLASTIC PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its adjustable range is still narrow, and specific application scenarios are limited

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A kind of high dielectric constant polytetrafluoroethylene film of the present embodiment, its preparation method comprises the following steps:

[0041] (1) Preparation (Ba 1-x Sr x )TiO 3 fine powder and Ba(Ti 1-y sn y )O 3fine powder, and by mass ratio of 1:0.1, (Ba 1- x Sr x )TiO 3 fine powder and Ba(Ti 1-y sn y )O 3 Fine powder mixed into functional materials;

[0042] Wherein, x=0.3, y=0.2;

[0043] Specifically, (Ba 1-x Sr x )TiO 3 The preparation method of fine powder comprises:

[0044] (1.1) Accurately weigh BaTiO according to the chemical formula ratio 3 , SrTiO 3 and TiO 2 Mix evenly, put it into a ball mill tank, introduce deionized water as the ball mill medium, and perform a ball mill for 6 hours; after the ball mill, put it in an oven to dry, pass through a 40-mesh sieve, and obtain a ball mill;

[0045] (1.2) Put the primary ball abrasive into the crucible, pre-fire at 1000°C for 3 hours, then perform secondary ball milling in the ba...

Embodiment 2

[0057] A kind of high dielectric constant polytetrafluoroethylene film of the present embodiment, its preparation method comprises the following steps:

[0058] (1) Preparation (Ba 1-x Sr x )TiO 3 fine powder and Ba(Ti 1-y sn y )O 3 fine powder, and according to the mass ratio of 1:1, (Ba 1-x Sr x )TiO 3 fine powder and Ba(Ti 1-y sn y )O 3 Fine powder mixed into functional materials;

[0059] Wherein, x=0.4, y=0.16;

[0060] (Ba 1-x Sr x )TiO 3 fine powder and Ba(Ti 1-y sn y )O 3 The preparation method of fine powder is identical with embodiment 1;

[0061] (2) Mix the functional material and polytetrafluoroethylene fine powder at a mass ratio of 2:1000, and mix for 2 hours at 800r / min; obtain the mixed raw material;

[0062] (3) Pressing the mixed raw materials at 30 MPa for 5 hours to make a cylindrical blank; and sintering the blank at 380° C. for 20 hours to form a blank;

[0063] (4) Turning or spinning the blank into a high dielectric constant polytet...

Embodiment 3

[0065] A kind of high dielectric constant polytetrafluoroethylene film of the present embodiment, its preparation method comprises the following steps:

[0066] (1) Preparation (Ba 1-x Sr x )TiO 3 fine powder and Ba(Ti 1-y sn y )O 3 fine powder, and by mass ratio of 1:5, (Ba 1-x Sr x )TiO 3 fine powder and Ba(Ti 1-y sn y )O 3 Fine powder mixed into functional materials;

[0067] Wherein, x=0.5, y=0.13;

[0068] (Ba 1-x Sr x )TiO 3 fine powder and Ba(Ti 1-y sn y )O 3 The preparation method of fine powder is identical with embodiment 1;

[0069] (2) Mix the functional material and polytetrafluoroethylene fine powder at a mass ratio of 5:1000, and mix for 4 hours at 500r / min; obtain the mixed raw material;

[0070] (3) Put the mixed raw materials under 10MPa and press for 6 hours to make a cylindrical blank; and place the blank at 360°C for 15 hours to sinter to form a blank;

[0071] (4) Turning or spinning the blank into a high dielectric constant polytetraf...

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Abstract

The invention discloses a polytetrafluoroethylene film with a high dielectric constant and its preparation method and application. The polytetrafluoroethylene film with a high dielectric constant is put into raw materials and consists of polytetrafluoroethylene and functional materials. The functional material By (Ba 1‑x Sr x )TiO 3 and Ba(Ti 1‑y sn y )O 3 Composition, wherein, x=0.3-0.6, y=0.1-0.2. In the present invention, in order to modify the dielectric properties of polytetrafluoroethylene materials, two kinds of modified barium titanate ceramic fine powders are added as functional materials in polytetrafluoroethylene; , the dielectric constant of the polytetrafluoroethylene film of the present invention is adjustable between 2.3-80, and the dielectric loss is all lower than 1.0×10 ‑3 , which can meet the needs of different designs in the 5G communication field.

Description

technical field [0001] The invention belongs to the technical field of 5G communication, and in particular relates to a polytetrafluoroethylene film with high dielectric constant and its preparation method and application. Background technique [0002] The development trend of electronic information products and equipment is high frequency and miniaturization, and organic materials with high dielectric constant are conducive to the miniaturization and miniaturization of electronic devices. [0003] Under high-frequency transmission, PTFE is the organic material with the best performance found so far. PTFE not only has good dielectric properties, but also has excellent high temperature resistance and natural V0 flame retardancy. However, PTFE materials also have limitations, such as the low dielectric constant of pure PTFE materials (about 2.4-2.9), which limits its wide application in high-frequency PCB boards in the 5G communication field. [0004] In order to solve the a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/18C08K3/22C08J5/18C04B35/47C04B35/468
CPCC08J5/18C04B35/47C04B35/468C08J2327/18C08K2003/2237C08K2201/014C04B2235/96C04B2235/3293C04B2235/95Y02P20/10
Inventor 熊行邓赛明
Owner ZHEJIANG DEQING CONCEPTFE PLASTIC PROD
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