Cyanate resin base composite material and preparation method thereof

A technology of cyanate resin and composite materials, which is applied in the fields of cyanate resin-based composite materials, high dielectric constant cyanate resin-based composite materials and their preparation, and can solve the problems of high dielectric loss of composite materials and composite materials. Poor heat resistance and other problems, to achieve the effect of improving dielectric properties, promoting dispersion, and improving dispersion

Inactive Publication Date: 2010-12-22
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing technology, people generally use epoxy resin, polyvinylidene fluoride resin, etc., resulting in the dielectric loss of the composite material is still at a high level, and the heat resistance of the composite material is poor

Method used

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  • Cyanate resin base composite material and preparation method thereof
  • Cyanate resin base composite material and preparation method thereof
  • Cyanate resin base composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Copper calcium titanate with a particle size of 1 μm was kept at 120° C. for 4 hours to obtain dried copper calcium titanate. Pour the dried copper calcium titanate into an ethanol aqueous solution of γ-aminopropyltriethoxysilane (KH-550) at 40°C (the mass of KH-550 is 1% of the mass of copper calcium titanate, KH-550: The mass ratio of ethanol: water is 1: 20: 2), stirred evenly with a high-speed homogeneous mixer, left to air at room temperature for 8 hours, and baked at 90°C for 2 hours to obtain surface-treated copper calcium titanate, which is denoted as CCTO.

[0032] Put the expandable graphite (80 mesh) into the porcelain crucible, expand it rapidly at a high temperature of 900°C, take it out of the high-temperature furnace when it no longer expands (about 20s), and then put the expanded graphite in acetone solvent Sonicate for 2 hours, leave in the air at room temperature for 12 hours, and dry at 90°C for 2 hours to obtain expanded graphite flakes (diameter 20...

Embodiment 2

[0041] Copper calcium titanate with a particle size of 2 μm was kept at 120° C. for 4 hours to obtain dried copper calcium titanate. Pour the dried copper calcium titanate into an ethanol aqueous solution of γ-aminopropyltriethoxysilane (KH-550) at 40°C (the mass of KH-550 is 1% of the mass of copper calcium titanate, KH-550: Ethanol: water = 1: 20: 2, mass ratio), stirred evenly with a high-speed homogeneous mixer, left to air at room temperature for 8 hours, and baked at 90°C for 2 hours to obtain surface-treated calcium copper titanate, which is denoted as CCTO.

[0042] Put the expandable graphite (100 mesh) into a porcelain crucible, expand it rapidly at a high temperature of 700°C, take it out of the high-temperature furnace when it no longer expands (about 60s), and then put the expanded graphite in acetone solvent Sonicate for 4 hours, leave in the air at room temperature for 12 hours, and dry at 90°C for 2 hours to obtain expanded graphite flakes (diameter 10-40 μm, ...

Embodiment 3

[0055] Copper calcium titanate with a particle size of 2 μm was kept at 120° C. for 4 hours to obtain dried copper calcium titanate. Pour the dried copper calcium titanate into the ethanol aqueous solution of γ-aminopropyltriethoxysilane (KH-550) at 40°C (the quality of KH-550 is 1% of the mass of copper calcium titanate, KH-550 : ethanol: the mass ratio of water is 1: 20: 2), stirred evenly with a high-speed homogeneous mixer, left to air at room temperature for 8 hours, and baked at 90°C for 2 hours to obtain surface-treated copper calcium titanate, record for the CCTO.

[0056] Put the expandable graphite (80 mesh) into the porcelain crucible, expand it rapidly at a high temperature of 900°C, take it out of the high temperature furnace when it no longer expands (about 20s), and then put the expanded graphite in acetone solvent Sonicate for 4 hours, leave in the air at room temperature for 12 hours, and dry at 90°C for 2 hours to obtain expanded graphite flakes (diameter 10...

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Abstract

The invention discloses a cyanate resin base composite material with a low percolation threshold and a high dielectric constant and a preparation method thereof. The cyanate resin base composite material is characterized by comprising the following components by volume: 10%-15% of calcium copper titanate, 0.5%-3.0% of expanded graphite sheets and 89.5%-82.0% of cyanate, wherein the granularity of the calcium copper titanate ranges from 1 micrometer to 2 micrometers; the diameters of the expanded graphite sheets are 10-50 micrometers, and radius-thickness ratio is between 300 and 500. The preparation method of the cyanate resin base composite material comprises the following steps of: mixing the calcium copper titanate, the expanded graphite sheets and the cyanate; and melting at 80-100 DEG C, then raising temperature to 120-150 DEG C, and pre-polymerizing until obvious sedimentation of the calcium copper titanate and the expanded graphite sheets exists. The invention can obviously enhance the dielectric constant of the cyanate resin base composite material by regulating the relative content of added components in the cyanate resin base composite material and utilizing synergistic effect generated among physically and chemically treated components, has the advantages of great low percolation threshold, low dielectric loss, good heat resistance, low cost, simple preparation method, and the like and has wide application prospect in the fields of electronic engineering, electrical engineering, and the like as a composite material with the high dielectric constant.

Description

technical field [0001] The invention relates to a cyanate resin-based composite material, in particular to a cyanate resin-based composite material with a very low seepage threshold and a high dielectric constant and a preparation method thereof, belonging to the technical field of high dielectric constant composite materials. Background technique [0002] High dielectric constant (high K value) materials with the advantages of light weight, easy processing, low cost and good mechanical properties have attracted extensive attention in the field of electronics and electrical engineering. However, the single performance of a single-component material is difficult to meet the requirements of manufacturability and performance. The design and development of new high dielectric constant composite materials can not only realize the complementary advantages of single-phase materials, but also may be endowed with new excellent properties to optimize the performance of composite mater...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L79/04C08K13/06C08K9/06C08K3/24C08K7/24C08G73/06
Inventor 顾嫒娟沈艳萍梁国正袁莉
Owner SUZHOU UNIV
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