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High dielectric constant ceramic/polymer matrix composite dielectric material and preparation method thereof

A high dielectric constant and dielectric material technology, applied in the field of composite materials, can solve the problems of difficult to control the amount of addition and dielectric constant, poor engineering practicability, rapid changes, etc., to achieve engineering practicability, easy filling, high The effect of dielectric constant

Inactive Publication Date: 2013-02-13
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantages are: because the dielectric constant of the composite material changes sharply when the filling amount of the conductive filler is close to the percolation threshold, it is difficult to control the accurate addition amount and dielectric constant, and the engineering practicability is poor.

Method used

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  • High dielectric constant ceramic/polymer matrix composite dielectric material and preparation method thereof
  • High dielectric constant ceramic/polymer matrix composite dielectric material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Measure the polyvinylidene fluoride and copper calcium titanate ceramic powder according to the volume ratio of 9:1; put the polyvinylidene fluoride and copper calcium titanate ceramic powder into a ball mill and mix and grind for 15 minutes, the ball-to-material ratio is 1:1 ;Put the polyvinylidene fluoride and copper calcium titanate ceramic mixed powder into the mold for hot pressing, the hot pressing temperature is 200°C, the pressure is 15MPa, the holding time is 15min, cool naturally, take out the sample, and get the copper calcium titanate ceramic mixed powder Composites with a powder volume fraction of 10%.

Embodiment 2

[0022] Measure the polyvinylidene fluoride and copper calcium titanate ceramic powder according to the volume ratio of 83:17; put the polyvinylidene fluoride and copper calcium titanate ceramic powder into a ball mill and mix and grind for 15 minutes, the ball-to-material ratio is 1:1 ;Put the mixed powder of polyvinylidene fluoride and copper calcium titanate ceramics into the mold for hot pressing, the hot pressing temperature is 200°C, the pressure is 15MPa, the holding time is 15min, cool naturally, take out the sample, and obtain copper calcium titanate ceramics The composite material was mixed with a powder volume fraction of 17%.

Embodiment 3

[0024] Measure the polyvinylidene fluoride and copper calcium titanate ceramic powder according to the volume ratio of 77:23; put the polyvinylidene fluoride and copper calcium titanate ceramic powder into a ball mill and mix and grind for 15 minutes, the ball-to-material ratio is 1:1 ;Put the polyvinylidene fluoride and copper calcium titanate ceramic mixed powder into the mold for hot pressing, the hot pressing temperature is 200°C, the pressure is 15MPa, the holding time is 15min, cool naturally, take out the sample, and get the copper calcium titanate ceramic mixed powder Composites with a powder volume fraction of 23%.

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Abstract

The present invention belongs to the field of composite materials, and relates to a high dielectric constant ceramic / polymer matrix composite dielectric material and a preparation method thereof. The high dielectric constant ceramic / polymer matrix composite dielectric material is formed by carrying out hot pressing on polyvinylidene fluoride and calcium copper titanate ceramic mixed powder. The preparation method comprises the following steps: preparing materials, carrying out mixing grinding, and carrying out hot pressing molding. The ceramic / polymer matrix composite dielectric material has the following characteristics that: a dielectric constant is high, a filling amount of a filler is easily controlled, and engineering practicability is provided.

Description

technical field [0001] The invention belongs to the field of composite materials, and relates to a high dielectric constant ceramic / polymer matrix composite dielectric material and a preparation method. Background technique [0002] With the rapid development of the microelectronics industry, higher and higher requirements are put forward for dielectric materials. Among them, polymer-based composite dielectric materials with high dielectric constant, low dielectric loss and easy processability have received extensive attention. . At present, polymer-based composite dielectric materials are mainly divided into two types: [0003] (1) Adding high dielectric ceramic materials to the polymer matrix. For example, Dang Zhimin of Beijing University of Chemical Technology and others filled the polyimide matrix with copper calcium titanate (CCTO) powder. When the filling amount of CCTO powder reached 40vol%, at 100Hz, the dielectric constant of the composite material was close to 5...

Claims

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Application Information

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IPC IPC(8): C08L27/16C08K3/24B29C43/58
Inventor 宋洪松杨程
Owner AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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