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Hydrophobic metamaterial base material and preparation method thereof

A metamaterial and hydrophobic technology, applied in the field of materials, can solve the problems of poor performance of metamaterial substrates, achieve high dielectric constant, and improve the effect of special environment practicability

Inactive Publication Date: 2018-03-06
LUOYANG INST OF CUTTING EDGE TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems in related technologies, the present invention proposes a hydrophobic metamaterial substrate and its preparation method to solve the problem of poor performance of existing metamaterial substrates

Method used

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  • Hydrophobic metamaterial base material and preparation method thereof

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preparation example Construction

[0028] The method for preparing a hydrophobic metamaterial substrate provided by the present invention is to prepare a fluoropolymer substrate with a specific high dielectric constant according to the simulation design results of the metamaterial, which specifically includes the following steps: combining fluoropolymer powder with nanoparticles Blending the silane coupling agent in proportion; preparing a metamaterial base material; roughening the prepared metamaterial base material to obtain a hydrophobic surface to obtain a hydrophobic metamaterial base material.

[0029] figure 1 It is a process flow diagram of a method for preparing a hydrophobic metamaterial substrate according to a preferred embodiment of the present invention. Such as figure 1 As shown, first, the fluorine-containing polymer powder is blended with nanoparticles and silane coupling agent. In this step, a small amount of ethanol can be added during the blending process, and wet blending is adopted, throu...

Embodiment 1

[0032] 100 parts of polyvinylidene fluoride, 10 parts of titanium dioxide, 0.1 part of silane coupling agent and a small amount of ethanol were blended using 0.5 mm zirconium beads at a speed of 300 rpm for 60 hours; Extending the machine, using a tape casting process to prepare a metamaterial substrate sheet with a dielectric constant of 5 (1 GHz); then, using a sandblasting machine, the surface of the metamaterial substrate sheet is roughened by sandblasting. After sandblasting, the hydrophobic contact angle was 130°, and the rolling angle was 8°, so that the final hydrophobic metamaterial substrate was prepared.

Embodiment 2

[0034] 100 parts of poly(vinylidene fluoride-hexafluoropropylene) copolymer, 30 parts of barium strontium titanate, 10 parts of silane coupling agent and a small amount of ethanol were used for ball milling at 100 rpm for 4 hours using 4 mm zirconium beads. mixed; at a casting temperature of 150 ° C, a metamaterial substrate sheet with a dielectric constant of 10 (1 GHz) was prepared by a casting process through a casting machine; The surface of the substrate sheet is roughened, and after sandblasting, the hydrophobic contact angle is 135°, and the rolling angle is 5°, so as to obtain the final hydrophobic metamaterial substrate.

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Abstract

The invention discloses a hydrophobic metamaterial base material and a preparation method thereof, wherein the hydrophobic metamaterial base material comprises 100 parts of a fluorine-containing polymer, 1.5-35 parts of nanoparticles, and 0.05-12 parts of a silane coupling agent. The preparation method comprises: blending the fluorine-containing polymer, the nanoparticles and the silane coupling agent according to a certain ratio; preparing a metamaterial base material sheet; and roughening the obtained metamaterial base material sheet to obtain a hydrophobic surface so as to prepare the hydrophobic metamaterial base material. According to the present invention, the hydrophobic metamaterial base material has anti-icing function while maintains the high dielectric constant so as to improvethe practicality in the special environment.

Description

technical field [0001] The invention relates to the field of materials, more specifically, to a hydrophobic metamaterial substrate and a preparation method thereof. Background technique [0002] Metamaterials refer to some artificial composite structures or composite materials with extraordinary physical properties that natural materials do not have. Through the orderly design of the structure on the key physical scale of the material, the limitation of some apparent natural laws can be broken through, so as to obtain the supernormal material function beyond the ordinary nature inherent in nature. [0003] The important characteristics of metamaterials include: metamaterials are usually composite materials with novel artificial structures; "metamaterials" have extraordinary physical properties (often not found in natural materials); The nature and the artificial microstructure in it are jointly determined. Metamaterials generally include a substrate and artificial microstr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/16C08K3/22C08K5/54C08K3/24C08K3/04C08J5/18
CPCC08J5/18C08J2327/16C08K3/04C08K3/22C08K3/24C08K5/54C08K2003/2227C08K2003/2241C08K2201/011C08L27/16
Inventor 不公告发明人
Owner LUOYANG INST OF CUTTING EDGE TECH