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A high-performance microwave-absorbing and heat-dissipating composite material

A composite material and high-performance technology, applied in polyurea/polyurethane coatings, cooling/ventilation/heating transformation, coating, etc., can solve problems such as delays and interference with the normal operation of electronic medical instruments, and achieve improved heat dissipation performance and matching thickness Thin and fit-improving effect

Active Publication Date: 2017-12-12
HUIZHOU KINGBALI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the airport, flights are delayed due to electromagnetic interference; in hospitals, mobile phones often interfere with the normal work of various electronic medical instruments

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Example 1 The following formula is used (composed by weight ratio): matrix part: 30 parts of fluorocarbon resin, 45 parts of nano-carbon, 0.5 parts of force accelerator, 1.5 parts of coupling agent, and 0.1 part of dispersant to make a thickness of 0.1 ~1mm sheet, coating part: 39 parts of epoxy polyurethane and 61 parts of nano-titanium dioxide, the composite material of the present invention is prepared by the following steps: firstly, the silane coupling agent and nano-carbon are pre-mixed by spraying, and then in vacuum Dry at 0.05MPa for 8 minutes, then add organic resin, focus accelerator, and dispersant to mix, and press it into a sheet-like matrix; then mix epoxy polyurethane and nano-titanium dioxide evenly to make a coating, and apply the coating evenly by thermal spraying method Cover the surface of the substrate with a coating thickness of 0.01-0.2mm, and then dry it at 85°C to obtain it; wherein, the carbon nanotubes, carbon nanofibers, and carbon nanosphere...

Embodiment 2

[0015] Example 2 Formula (composed by weight ratio): matrix part: 44 parts of amino resin, 65.3 parts of nano-carbon, 0.3 parts of force accelerator, 1.2 parts of coupling agent, and 0.2 parts of dispersant to make a thickness of 0.1-1mm The sheet, the coating part: 35 parts of epoxy polyurethane and 65 parts of nano-titanium dioxide, adopt the following steps to prepare the composite material of the present invention: first adopt the spraying method to pre-mix the silane coupling agent and nano-carbon, and then pre-mix the silane coupling agent and nano-carbon at a vacuum degree of 0.06MPa After drying for 5 minutes, organic resin, focus accelerator, and dispersant were added and mixed, and pressed into a sheet-like matrix; then epoxy polyurethane and nano-titanium dioxide were mixed evenly to make a coating, and the coating was evenly coated on the surface by thermal spraying. On the surface of the substrate, the thickness of the coating is 0.01~0.2mm, and then dried at 80 ° ...

Embodiment 3

[0016] Example 3 Formula (composed by weight ratio): matrix part: 30 parts of phenolic resin, 58 parts of nano-carbon, 0.2 parts of force accelerator, 1.8 parts of coupling agent, and 0.5 parts of dispersant to make a thickness of 0.1-1mm The sheet, the coating part: 50 parts of epoxy polyurethane and 50 parts of nano-titanium dioxide, adopt the following steps to prepare the composite material of the present invention: first adopt the mode of spraying to pre-mix the silane coupling agent and nano-carbon, and then pre-mix the silane coupling agent and nano-carbon at a vacuum degree of 0.06MPa After drying for 5 minutes, organic resin, focus accelerator, and dispersant were added and mixed, and pressed into a sheet-like matrix; then epoxy polyurethane and nano-titanium dioxide were mixed evenly to make a coating, and the coating was uniformly coated on the surface by thermal spraying. On the surface of the substrate, the thickness of the coating is 0.01~0.2mm, and then dried at ...

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Abstract

The invention discloses a high-performance wave-absorbing and heat-dissipating composite material; the high-performance wave-absorbing and heat-dissipating composite material is composed of two parts including a basal body and a coating, wherein the basal body is a sheet with the thickness of 0.1-1 mm; the basal body is prepared from the following components in parts by weight: 10-40 parts of organic resin, 30-60 parts of nanocarbon, 0-5 parts of exerting accelerant, 1-6 parts of coupling agent, and 0-5 parts of dispersing agent; and the coating is composed of 30-80 parts by weight of epoxy-polyurethane and 20-70 parts by weight of nanometer titania. According to the invention, the excellent heat transfer and physical properties of nanocarbon are compounded with an organic resin, such as fluorocarbon resin; therefore, the compliance between a basal body material and a substrate can be increased; the heat dissipation property can also be increased; in the preparation process of the basal body, the compatibility between a basal body resin and a nanocarbon tube is increased by adding the coupling agent; three forms of nanocarbon are selected and compounded, so that the inter-particle binding force is increased; therefore, the material has excellent mechanical property; and the high-performance wave-absorbing and heat-dissipating composite material disclosed by the invention is high in absorbed frequency band and absorptivity and thin in matching thickness.

Description

technical field [0001] The invention relates to a polymer material, in particular to a high-performance wave-absorbing and heat-dissipating composite material, which belongs to the technical field of polymer materials. Background technique [0002] With the development of modern science and technology, the impact of electromagnetic radiation on the environment is increasing. At the airport, flights are delayed due to electromagnetic wave interference; in hospitals, mobile phones often interfere with the normal work of various electronic medical instruments. Therefore, controlling electromagnetic pollution and finding a material that can resist and weaken electromagnetic radiation—wave-absorbing materials have become a major topic in material science. [0003] The absorbing material can absorb the electromagnetic wave energy projected onto its surface. In engineering applications, in addition to requiring the absorbing material to have a high absorption rate for electromagne...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/12C08L61/20C08L61/06C08K13/06C08K9/06C08K7/00C08K7/06C08K7/18C08J7/04C09D175/04C09D7/12H05K7/20H05K9/00
CPCC08J7/04C08K3/22C08K7/06C08K7/18C08K7/24C08K9/06C08K13/06C08K2003/2241C08K2201/011C09D7/61C09D175/04H05K9/0081C08L27/12C08L61/20C08L61/06
Inventor 杨永佳张彦兵杨小义
Owner HUIZHOU KINGBALI TECH
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