High-dielectric and low-loss material based on capacitor-inductor synergistic effect and preparation method

A synergistic effect, capacitive-inductive technology, applied in the field of materials, can solve problems such as high dielectric constant and high impedance matching characteristics, and achieve the effects of large-scale production, reduced loss, and low loss

Pending Publication Date: 2021-02-23
SHANGHAI MARITIME UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of this invention is to solve the technical problem that it is difficult for a single material to have high dielectric constant, high impedance matching characteristics and low loss performance, while composite materials need to be superimposed hundreds of times

Method used

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  • High-dielectric and low-loss material based on capacitor-inductor synergistic effect and preparation method
  • High-dielectric and low-loss material based on capacitor-inductor synergistic effect and preparation method
  • High-dielectric and low-loss material based on capacitor-inductor synergistic effect and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Weigh 0.45g of polyvinylidene fluoride, pour it into a hot press for molding, set the pressure to 20MPa, set the hot pressing temperature to 100°C, and set the holding time to 5min; then pour 0.45g of graphene with a mass fraction of 10wt.% Mix the powders, and prepare a 0-10wt.% double-layer composite material according to the above-mentioned hot pressing process.

Embodiment 2

[0031] Weigh 0.45g of mixed powder with a graphene mass fraction of 2wt.%, pour it into a hot press for molding, set the pressure to 20MPa, set the hot pressing temperature to 100°C, and set the holding time to 5min; then pour 0.45g of graphite The mixed powder with 10wt.% mass fraction of alkene is prepared according to the above-mentioned hot pressing process to prepare 2-10wt.% double-layer composite material.

Embodiment 3

[0033] Weigh 0.3g of polyvinylidene fluoride powder, pour it into a hot press for molding, set the pressure to 20MPa, set the hot pressing temperature to 100°C, and set the holding time to 5min; The mixed powder of .% is pressed and formed according to the above process, and finally 0.3g of polyvinylidene fluoride powder is poured into it, and a 0-10-0wt.% three-layer composite material is prepared after hot pressing.

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Abstract

The invention discloses a high-dielectric and low-loss material based on a capacitance-inductance synergistic effect and a preparation method, and the preparation method comprises the following steps:step 1, weighing graphene with different mass fractions, respectively mixing the graphene with polyvinylidene fluoride, and conducting crushing and drying to obtain first mixed powder and second mixed powder, wherein the mass fraction of the first mixed powder graphene is 0-6 wt.%, and the mass fraction of the second mixed powder graphene is 6-18 wt.%. step 2, subjecting the first mixed powder tocompression molding to obtain a single-layer material; and step 3, pouring the second mixed powder into the single-layer material prepared in the step 2, and carrying out compression molding to prepare the high-dielectric and low-loss material with the double-layer structure. According to the invention, the graphene powder is used as a conductive functional phase, the single-layer block materialwith inductance and capacitance characteristics is prepared, the inductance-capacitance and capacitance-inductance-capacitance laminated materials are prepared through sequential lamination and have the characteristics of high dielectric property and low loss, and large-scale production is facilitated.

Description

technical field [0001] The invention relates to the field of materials, in particular to a high-dielectric, low-loss material and a preparation method based on the synergistic effect of capacitance and inductance. Background technique [0002] Materials with high dielectric constant (ε′) and low loss (tanδ) have important application value in capacitors, sensors, energy storage devices and other fields. Limited to the intrinsic dielectric parameters of the material, the preparation process, etc., it is difficult for a single material to have high dielectric constant, high impedance matching characteristics and low loss. In recent years, researchers have increased the dielectric constant of the composite material by adding a conductive functional phase to the polymer medium, and at the same time coated and modified the surface of the functional phase to reduce the loss value of the material to obtain a high-dielectric and low-loss composite material. Material. As reported i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B9/00B32B9/04B32B27/14B32B27/30B32B37/10C08L27/16C08K3/04
CPCB32B5/16B32B5/30B32B37/10C08K3/042B32B2264/0242B32B2264/108B32B2264/12B32B2307/20B32B2457/16C08L27/16
Inventor 范润华王宗祥田加红孙凯王忠阳吴新锋
Owner SHANGHAI MARITIME UNIVERSITY
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