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Hollow particles, preparation method therefor, and heat-radiating fluid composition comprising same

A technology of hollow particles and heat-conducting fluid, applied in chemical instruments and methods, microsphere preparation, ceramic products, etc., can solve the problems of reduced heat dissipation characteristics, low heat dissipation performance, insufficient heat dissipation capacity, etc., achieve excellent heat dissipation performance and improve heat dissipation performance Effect

Pending Publication Date: 2022-02-01
LG CHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these fluids are not capable of dissipating the heat generated by repeated high-speed charging and discharging of the battery to a satisfactory level.
[0008] Therefore, people try to add thermally conductive inorganic particles to the heat dissipation fluid to further improve the heat dissipation characteristics, but after a long time, the inorganic particles settle due to the weight of the inorganic particles, resulting in a significant decrease in heat dissipation characteristics
In addition, carbon-based inorganic particles with high heat dissipation properties such as graphite particles, carbon nanotubes, and graphene particles have high electrical conductivity, and thus cannot be used as inorganic particles mixed with heat dissipation fluids, although they have advantages only in conductivity but have Inorganic particles with low heat dissipation properties, such as silica and alumina particles, have been used as inorganic particles mixed with heat dissipation fluids, but the heat dissipation properties of silica and alumina particles are somewhat poor

Method used

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  • Hollow particles, preparation method therefor, and heat-radiating fluid composition comprising same
  • Hollow particles, preparation method therefor, and heat-radiating fluid composition comprising same
  • Hollow particles, preparation method therefor, and heat-radiating fluid composition comprising same

Examples

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Embodiment 1

[0104] (1) Preparation of Hollow Particle I

[0105] In the average particle size of 100g (D 50 ) of 1 μm in styrene spherical particles were treated with 500 g of sulfuric acid and thus modified the surface of the particles with anions, 25 g of carbon nanotubes (LG Chem) were added.

[0106] The carbon-treated styrene spherical particles were immersed in 100 ml of ATSB solution, thereby introducing alumina precursor cations (Al 3+ ).

[0107] Styrene spherical particles treated with carbon and into which alumina precursor cations were introduced were heat-treated at 800° C. for 1 hour under an oxygen condition, thereby forming on the surface of the particles a compound containing alumina and carbon in a weight ratio of 4:1 The inorganic particle layer of nanotubes, meanwhile, obtains hollow inorganic particles in which empty inner spaces are formed inside the inorganic particle layer.

[0108] Hollow inorganic particles were immersed in a binding resin solution (20% (w / w) ...

Embodiment 2

[0112] A hollow particle II and a heat dissipation fluid composition were prepared in the same manner as in Example 1, except that tetrachlorosilane solution was used instead of the ATSB solution used in Example 1, and graphene was used instead of carbon nanotubes.

Embodiment 3

[0114] In addition to the preparation of hollow particles when the inorganic particle layer comprising aluminum oxide and carbon nanotubes with a weight ratio of 4:1 is formed on the surface of the particle in Example 1, the hollow particle is formed on the surface of the particle and contains a weight ratio of 3 In addition to preparing hollow inorganic particles during the inorganic particle layer of aluminum oxide and carbon nanotubes of 1, hollow particles III and heat dissipation fluid composition were prepared in the same manner as in Example 1.

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Abstract

The present invention relates to: hollow particles, which are spherical hollow particles, comprise an inorganic particle layer that comprises ceramic particles and conductive carbon-based particles and a polymer coating layer that encompasses the inorganic particle layer, and have an empty inner space formed inside the inorganic particle layer; a method for preparing the hollow particles; and a heat-radiating fluid composition comprising the hollow particles.

Description

technical field [0001] Cross References to Related Applications [0002] This application claims priority and benefit from Korean Patent Application No. 10-2020-0010963 filed on January 30, 2020, the disclosure of which is incorporated herein by reference in its entirety. [0003] The present invention relates to a hollow particle capable of improving the heat dissipation performance of a heat dissipation fluid, a method for manufacturing the hollow particle, and a heat dissipation fluid composition containing the hollow particle. Background technique [0004] The secondary battery is considered to be a core technology of a smart grid capable of storing, charging, and discharging a large amount of electricity since it includes various types of batteries connected in series and / or in parallel. Research to further increase the capacity of batteries has been actively conducted in various institutions, and batteries with increased capacity improve the driving range of electr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/08H01M10/653H01M10/656H01M50/22
CPCC09K5/08H01M10/653H01M10/656H01M50/22Y02E60/10C09K5/10C08K7/24C08K7/26C08K9/10C08K3/041C08K3/042C08K3/36C08K2003/2227B01J13/02B01J13/22C04B38/009C04B35/10C04B35/14C04B35/18C04B2111/00853C04B2235/3217C04B2235/3418C04B2235/422C04B2235/5288C04B2235/528C04B2235/5445C04B2235/5436C04B2235/6567C04B2235/6583C04B35/117H01M10/613H01M10/6567H01M50/211B01J13/20C04B35/80C04B38/067C04B41/46C08K3/013C08K3/04C08J3/20H01M50/20H01M50/24H01M10/615C01B32/168C01B32/194C01B2202/24C01B2204/24C01P2004/34C01P2004/61C01P2004/62C01P2004/80
Inventor 权敬颜全汶锡金都胤
Owner LG CHEM LTD