Method for preparing lyophobic heat conduction material with micro-nano core-shell structure

A core-shell structure, thermally conductive material technology, applied in heat exchange materials, chemical instruments and methods, fibrous fillers, etc., can solve problems such as preparation and application that have not been reported

Active Publication Date: 2013-06-12
东莞市维赛实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for materials that require moisture resistance and high thermal conductivity, there are no relevan

Method used

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  • Method for preparing lyophobic heat conduction material with micro-nano core-shell structure
  • Method for preparing lyophobic heat conduction material with micro-nano core-shell structure
  • Method for preparing lyophobic heat conduction material with micro-nano core-shell structure

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0040] (1) SiO 2 Nanoparticles or Al 2 o 3 Synthesis of Nanoparticles

[0041] SiO 2 Synthesis of nanoparticles: put 80mL of ethanol, 5mL of ammonia water and 1mL of water in a flask, mechanically stir evenly, slowly add 3mL of TEOS dropwise, and react at room temperature for 12h; after the reaction, the reaction solution is centrifuged and washed several times, discarded The upper layer of waste liquid, that is, white nano-SiO 2 Particles are dried at 40-50°C for later use;

[0042] Al 2 o 3 Synthesis of nanoparticles: Dissolve 6g of aluminum isopropoxide in isopropanol, transfer the solution to a flask, add an appropriate amount of water and 5mL of concentrated nitric acid to the flask, and react at room temperature for 24 hours; after the reaction, the reaction solution is centrifuged And wash several times, discard the upper layer of waste liquid, and obtain white about 100nm Al 2 o 3 Particles were dried at 80°C for later use.

[0043] (2) Modified SiO 2 Nanopa...

specific Embodiment approach 2

[0053] (1) SiO 2 Nanoparticles or Al 2 o 3 Synthesis of Nanoparticles

[0054] SiO 2 Synthesis of nanoparticles: put 120mL ethanol, 10mL ammonia water and 5mL water in a flask, mechanically stir evenly, slowly add 8mL tetraethyl orthosilicate dropwise, and react at 40°C for 10h; after the reaction, the reaction solution is centrifuged and washed several times. Second, discard the upper waste liquid to obtain white nano-SiO 2 Particles are dried at 40-50°C for later use.

[0055] 100nm Al 2 o 3 Synthesis of particles: Dissolve aluminum isopropoxide in isopropanol, transfer the solution to a flask, add water and 15mL concentrated nitric acid to the flask, and react at 40°C for 16h; after the reaction, the reaction solution is centrifuged and washed Several times, discard the upper layer of waste liquid, that is, white about 80nm Al 2 o 3 Particles were dried at 80°C for later use.

[0056] (2) Modified SiO 2 Nanoparticles or modified Al 2 o 3 Synthesis of Nanopartic...

specific Embodiment approach 3

[0065] (1) SiO 2 Nanoparticles or Al 2 o 3 Synthesis of Nanoparticles

[0066] 10nm-200nm SiO 2 Synthesis of nanoparticles: Put 100mL ethanol, 8mL ammonia water and 3mL water in a flask, mechanically stir evenly, slowly add 5mL tetraethyl orthosilicate dropwise, and react at 80°C for 8h; after the reaction, the reaction solution is centrifuged and washed several times. Second, discard the upper waste liquid to obtain white nano-SiO 2 Particles are dried at 40-50°C for later use.

[0067] 10-100nmAl 2 o 3 Synthesis of particles: Dissolve 10g of aluminum isopropoxide in isopropanol, transfer the solution to a flask, add water and 10mL of concentrated nitric acid to the flask, and react at 80°C for 10h; after the reaction, the reaction solution is centrifuged and Wash several times, discard the upper waste liquid, and obtain white nano-Al 2 o 3 Particles were dried at 80°C for later use.

[0068] (2) Modified SiO 2 Nanoparticles or modified Al 2 o 3 Synthesis of Nano...

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Abstract

The invention discloses a method for preparing a lyophobic heat conduction material with a micro-nano core-shell structure. The method comprises the following steps of: preparing micro-nano particles with different particle sizes by adopting a colloidal sol method at first; utilizing organic matters containing special functional groups to wrap the nano particles on microparticles because nano particle surfaces comprise hydroxyls, and thus obtaining composite particles with core-shell structures; and filling the composite particles into epoxy resin or organic silicon resin so as to prepare a packaging material with high thermal conductivity, super hydrophobicity, good heat resistance and thermal mechanical performance. Compared with a conventional particle filling packaging material or thermal interface material, the material has more excellent performances.

Description

technical field [0001] The invention relates to the synthesis of micro-nano composite particles with a core-shell structure and a preparation method for filling epoxy resin or organic silicon to prepare super-hydrophobic, high-thermal-conductivity materials with excellent performance. It belongs to the field of chemical materials. Background technique [0002] The preparation of core-shell structure particles to realize the design, combination and optimization of material structure and composition has always been a research hotspot in the field of materials science. Therefore, core-shell structure microspheres have received more and more attention. The shell of the core-shell structure can not only improve the physical and chemical properties of the core, but also the surface effect, quantum size effect and other size-related physical effects of the shell nanoparticles make the core-shell structure materials have many special properties (such as , improved chemical and ther...

Claims

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Application Information

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IPC IPC(8): C08L83/04C08L63/02C08K9/10C08K9/06C08K3/36C08K3/22C08K9/04C08K7/18C01B33/12C01F7/02C09C1/28C09C3/12C09C1/40C09K3/18C09K5/14
Inventor 贵大勇刘剑洪于厚春何传新匡蓉荣曾广福
Owner 东莞市维赛实业有限公司
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