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Preparation method of high heat conductivity coating

A technology of high thermal conductivity and coating, applied in the direction of coating, etc., can solve the problems of adding more fillers, affecting the excellent performance of coatings, increasing costs, etc., and achieve the effects of improving heat dissipation performance, excellent mechanical properties, and good compatibility

Inactive Publication Date: 2018-09-14
DONGGUAN LIANZHOU INTPROP OPERATION MANAGEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The coating prepared by the present invention has excellent thermal conductivity and high temperature resistance, but the addition of more fillers not only effectively increases the cost, but also affects the original excellent performance of the coating

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A preparation method of high thermal conductivity coating, comprising the following steps:

[0027] (1) After mixing and stirring the boron nitride powder and isopropanol evenly, ultrasonically treat for 30 minutes at a power of 1000W, after the treatment is finished, add silane coupling agent and tetrabutyl titanate dropwise, and transfer the mixed solution obtained by stirring to In the three-necked flask, the temperature was raised to 60-70°C, nitrogen gas with water was introduced, refluxed for 10 hours, cooled to room temperature after the treatment, filtered, and the obtained precipitate was washed and dried to obtain a composite powder, in which boron nitride powder, The dosage ratio of isopropanol, silane coupling agent and tetrabutyl titanate is 1g: 50ml: 0.1ml: 0.5ml;

[0028] (2) Place the composite powder prepared above in a high-temperature furnace, heat up to 500° C., treat for 0.5 h, and then cool with the furnace to obtain a boron nitride nanosheet / nano-...

Embodiment 2

[0035] A preparation method of high thermal conductivity coating, comprising the following steps:

[0036] (1) After mixing and stirring the boron nitride powder and isopropanol evenly, ultrasonically treat for 60 minutes under the power of 1000W, after the treatment is finished, add the silane coupling agent and tetrabutyl titanate dropwise, and transfer the mixed solution obtained by stirring to In the three-necked flask, the temperature was raised to 60-70°C, nitrogen gas with water was introduced, and the reflux treatment was performed for 20 hours. After the treatment, it was cooled to room temperature, filtered, and the obtained precipitate was washed and dried to obtain a composite powder, in which boron nitride powder, The dosage ratio of isopropanol, silane coupling agent and tetrabutyl titanate is 1g: 50ml: 0.1ml: 0.5ml;

[0037] (2) Place the composite powder prepared above in a high-temperature furnace, heat up to 800° C., treat for 1 hour, and then cool with the f...

Embodiment 3

[0044] A preparation method of high thermal conductivity coating, comprising the following steps:

[0045] (1) After mixing and stirring the boron nitride powder and isopropanol evenly, ultrasonically treat for 40 minutes under the power of 1000W, after the treatment is finished, add the silane coupling agent and tetrabutyl titanate dropwise, and transfer the mixed solution obtained by stirring to In the three-necked flask, the temperature was raised to 60-70°C, nitrogen gas with water was introduced, and the reflux treatment was performed for 12 hours. After the treatment, it was cooled to room temperature, filtered, and the obtained precipitate was washed and dried to obtain a composite powder, in which boron nitride powder, The dosage ratio of isopropanol, silane coupling agent and tetrabutyl titanate is 1g: 50ml: 0.1ml: 0.5ml;

[0046] (2) Place the composite powder prepared above in a high-temperature furnace, heat up to 600° C., treat for 0.5-1 h, and then cool with the ...

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Abstract

The invention discloses a preparation method of high heat conductivity coating. The preparation method comprises the following steps: firstly preparing a boron nitride nanosheet by adopting a solventstripping method, preparing composite powder, finally performing the high-temperature treatment, obtaining a boron nitride nanosheet / nano titanium oxide composite material, modifying the boron nitridenanosheet / nano titanium oxide composite material by adopting a prepared modification solution, finally mixing and stirring styrene-acrylic emulsion, acrylic resin and deionized water, then adding theprepared modified boron nitride nanosheet / nano titanium oxide composite material, basalt fibers and a cross-linking agent, stirring and mixing, finally adding a defoaming agent and a thickening agent, uniformly stirring and mixing, and obtaining high heat conductivity coating. The high heat conductivity coating prepared in the invention is good in stability, good in heat conductivity and excellent in mechanical performance.

Description

Technical field: [0001] The invention relates to the field of coating preparation, in particular to a preparation method of high thermal conductivity coating. Background technique: [0002] At present, mobile phones, notebooks, LEDs, desktop computers, various chargers and high-power devices are all involved in the structure of heat conduction and heat dissipation. These devices will emit a lot of heat during use. If the heat cannot be dissipated in time Going away will cause the performance of the device to degrade or even cause overheating and burn the device. [0003] Chinese patent 201510771559.9 discloses a thermally conductive coating, including the following components by weight: 30-50 parts of epoxy-modified silicone resin, 8-15 parts of curing agent, 25-35 parts of silicon nitride, and 5-10 parts of aluminum oxide , 3-7 parts of flame retardant, 2-5 parts of titanate coupling agent, 3-7 parts of flame retardant, 2-5 parts of titanate coupling agent, 2-5 parts of pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/04C09D7/62
CPCC09D133/04C08K2003/2237C08K2003/385C08K2201/011C08L2205/035C09D7/62C08L25/14C08K9/06C08K9/08C08K9/04C08K9/02C08K3/38C08K3/22
Inventor 陈东进
Owner DONGGUAN LIANZHOU INTPROP OPERATION MANAGEMENT CO LTD
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