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High-dielectric tunability ceramic/high polymer functional composite and preparation method

A functional composite material and tunable technology, applied in the field of information functional materials science, can solve problems such as dielectric tunability that is not involved, and achieve the effects of serialized dielectric constant, excellent dielectric properties, and good dielectric properties.

Inactive Publication Date: 2016-07-20
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the above studies mainly focus on the properties of dielectric constant, dielectric loss and energy storage density, and none of them involve the study of dielectric tunability.

Method used

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  • High-dielectric tunability ceramic/high polymer functional composite and preparation method
  • High-dielectric tunability ceramic/high polymer functional composite and preparation method

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Embodiment 1

[0030] This embodiment is a dielectric functional composite material. The dielectric functional composite material is respectively using analytically pure barium carbonate, strontium carbonate, titanium dioxide, polyvinylidene fluoride and γ-aminopropyltriethoxysilane as starting materials, according to 40vol% barium strontium titanate +60vol% PVDF dosing. The atomic composition of the barium strontium titanate is Ba 0.6 Sr 0.4 TiO 3 , and the surface of the ceramic particle is modified by 1wt% of the weight of γ-aminopropyltriethoxysilane.

[0031] The specific process of preparing the dielectric functional composite material in this embodiment is:

[0032] In step 1, the analytically pure barium carbonate, strontium carbonate, and titanium dioxide powders are dosed according to the molar ratio of strontium-barium titanate, which is often used in the preparation of solid solution ceramics in the industry. The atomic composition of the barium strontium titanate is Ba 0.6...

Embodiment 2

[0040] This embodiment is a dielectric functional composite material. The dielectric functional composite material is respectively using analytically pure barium carbonate, strontium titanate, titanium dioxide, polyvinylidene fluoride and γ-aminopropyltriethoxysilane as starting materials, and is prepared by 40vol% strontium titanate The volume ratio batching of barium+60vol% polyvinylidene fluoride. The atomic composition of the barium strontium titanate is Ba 0.6 Sr 0.4 TiO 3 , and the surface of the ceramic particle is modified by 1wt% of the weight of γ-aminopropyltriethoxysilane.

[0041] The specific process of preparing the dielectric functional composite material in this embodiment is:

[0042] In step 1, the analytically pure barium carbonate, strontium titanate and titanium dioxide powders are mixed according to the molar ratio of strontium to barium titanate. The atomic composition of the barium strontium titanate is Ba 0.6 Sr 0.4 TiO 3 , and its preparation...

Embodiment 3

[0050] This embodiment is a dielectric functional composite material. The dielectric functional composite material is respectively using analytically pure barium carbonate, strontium titanate, titanium dioxide, polyvinylidene fluoride and γ-aminopropyltriethoxysilane as starting materials, and is prepared by 40vol% strontium titanate The volume ratio batching of barium+60vol% polyvinylidene fluoride. The atomic composition of the barium strontium titanate is Ba 0.6 Sr 0.4 TiO 3 , and the surface of the ceramic particle is modified by 1wt% of the weight of γ-aminopropyltriethoxysilane.

[0051] The specific process of preparing the dielectric functional composite material in this embodiment is:

[0052] In step 1, the analytically pure barium carbonate, strontium titanate and titanium dioxide powders are mixed according to the molar ratio of strontium to barium titanate. The atomic composition of the barium strontium titanate is Ba 0.6 Sr 0.4 TiO 3 , and its preparation...

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Abstract

The invention discloses a high-dielectric tunability ceramic / high polymer functional composite and a preparation method.Barium strontium titanate ceramic particles are dispersed into a polyvinylidene fluoride matrix, and the barium strontium titanate ceramic particles and polyvinylidene fluoride are bonded with gamma-aminopropyltriethoxysilane.According to the composition of the dielectric functional composite and the preparation method, the dielectric constant ranges from 40 to 56, high dielectric tunability and workability are achieved, and the requirement of devices in the field of communication equipment including microwave phase shifters, phased-array antennas, tunable capacitors and the like for high dielectric tunability can be met.The dielectric functional composite has the advantages of dielectric constant serialization, high dielectric tunability, low dielectric loss and high energy storage density and is good in processability, components of complex structures can be easily manufactured, and the cost of practical application is reduced.

Description

technical field [0001] The invention relates to a highly dielectrically adjustable inorganic / organic functional composite material used in the fields of microwave phase shifters, phased array antennas, and tunable capacitors in communication systems and a preparation method thereof, belonging to the scientific field of information functional materials. Background technique [0002] With the rapid development of modern electronic technology and information technology and the interpenetration of different disciplines, a single material cannot meet the complex application requirements of various electronic components, so the research on dielectric functional composite materials was born. Dielectric functional composites are widely used in phase shifters, high energy storage capacitors, microwave absorbing materials, radar antennas and other fields. [0003] Inorganic ceramic materials and organic high polymer materials have different performance characteristics. The two heterog...

Claims

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Application Information

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IPC IPC(8): C08L27/16C08K9/06C08K3/24
CPCC08K9/06C08J5/18C08J2327/16C08K3/24C08L2203/16C08L27/16
Inventor 高峰王利张青青胡国辛
Owner NORTHWESTERN POLYTECHNICAL UNIV
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