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High heat-conducting wave-absorbing heat-dissipation composite material

A composite material, high thermal conductivity technology, applied in the field of polymer materials, can solve problems such as delays, interfere with the normal operation of electronic medical instruments, etc., and achieve the effects of improving wave absorption performance, improving heat transfer and heat dissipation performance, and high absorption frequency band

Inactive Publication Date: 2015-04-29
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 (proportioned by weight): 10 parts of organic resin, 15 parts of thermal conductive agent, 70 parts of magnetic powder, 3 parts of ethanol with a mass fraction of 65%, 1 part of water, and 1 part of dispersant is used first by spraying Mix the coupling agent and heat conduction agent at 75°C, then add organic resin, half of the heat conduction agent, half of water, ethanol, and dispersant processing aid to the high-speed dispersion mixer in sequence, and heat while stirring to 80-100°C, then add the remaining heat-conducting agent and magnetic powder into the internal mixer, control the temperature of the internal mixer at 180-200°C, and mix for 15 minutes to prepare a high thermal conductivity wave-absorbing and heat-dissipating composite material.

Embodiment 2

[0015] Example 2 The following formula (proportioned by weight): 11 parts of organic resin, 13 parts of thermal conductive agent, 70 parts of magnetic powder, 4 parts of ethanol with a mass fraction of 65%, 1 part of water, and 1 part of dispersant is used first by spraying Mix the coupling agent and heat conduction agent at 75°C, then add organic resin, half of the heat conduction agent, half of water, ethanol, and dispersant processing aid to the high-speed dispersion mixer in sequence, and heat while stirring to 80-100°C, then add the remaining heat-conducting agent and magnetic powder into the internal mixer, control the temperature of the internal mixer at 180-200°C, and mix for 15 minutes to prepare a high thermal conductivity wave-absorbing and heat-dissipating composite material.

Embodiment 3

[0016] Example 3 The following formula (proportion by weight): 13 parts of organic resin, 10 parts of heat conducting agent, 70 parts of magnetic powder, 5 parts of ethanol with a mass fraction of 65%, 1 part of water, and 1 part of dispersant; Mix the coupling agent and heat conduction agent at 75°C, then add organic resin, half of the heat conduction agent, half of water, ethanol, and dispersant processing aid to the high-speed dispersion mixer in sequence, and heat while stirring to 80-100°C, then add the remaining heat-conducting agent and magnetic powder into the internal mixer, control the temperature of the internal mixer at 180-200°C, and mix for 15 minutes to prepare a high thermal conductivity wave-absorbing and heat-dissipating composite material.

[0017] At the same ambient temperature, the thermal conductivity (test standard: ASTM D5470) of the three composite materials prepared in Examples 1 to 3 were 1.6239W / m.k, 1.4002W / m.k, and 1.3895W / m.k; their relative magn...

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Abstract

The invention discloses a high heat-conducting wave-absorbing heat-dissipation composite material. The composite material is prepared by using 5-15 parts by weight of organic resin, 10-30 parts by weight of heat conducting agent, 50-70 parts by weight of magnetic powder, 1-10 parts by weight of 60-90% ethanol, 1-5 parts by weight of water and 1-5 parts by weight of dispersing agent. The heat conducting agent having excellent heat transferring property is compounded with the organic resin, and therefore the heat transferring and heat dissipation properties of the matrix material of the composite material are improved; the wave absorbing property of the system is improved due to the use of the ferrite wave absorbing material having the characteristics of high absorbed frequency, high absorptivity, thin matching thickness and the like; and the high heat-conducting, wave-absorbing heat-dissipation composite material disclosed by the invention has high absorptivity to electromagnetic wave in wider frequency bands, and has the properties of light weight, temperature resistance, moisture resistance, corrosion resistance as well as good heat conducting property.

Description

technical field [0001] The invention relates to a polymer material, in particular to a high thermal conductivity, 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 el...

Claims

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Application Information

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IPC IPC(8): C08L75/04C08L29/04C08L61/06C08K9/00C08K3/38C08K3/22
Inventor 杨永佳张彦兵杨小义
Owner HUIZHOU KINGBALI TECH
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