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Title: Enhancing thermal conductivity of fluids with graphite nanoparticles and carbon nanotube

Abstract

A fluid media such as oil or water, and a selected effective amount of carbon nanomaterials necessary to enhance the thermal conductivity of the fluid. One of the preferred carbon nanomaterials is a high thermal conductivity graphite, exceeding that of the neat fluid to be dispersed therein in thermal conductivity, and ground, milled, or naturally prepared with mean particle size less than 500 nm, and preferably less than 200 nm, and most preferably less than 100 nm. The graphite is dispersed in the fluid by one or more of various methods, including ultrasonication, milling, and chemical dispersion. Carbon nanotubes with graphitic structure is another preferred source of carbon nanomaterial, although other carbon nanomaterials are acceptable. To confer long term stability, the use of one or more chemical dispersants is preferred. The thermal conductivity enhancement, compared to the fluid without carbon nanomaterial, is proportional to the amount of carbon nanomaterials (carbon nanotubes and/or graphite) added.

Inventors:
 [1];  [2]
  1. Lexington, KY
  2. Georgetown, KY
Issue Date:
Research Org.:
Ashland Licensing and Intellectual Property, LLC (Dublin, OH)
Sponsoring Org.:
USDOE
OSTI Identifier:
970561
Patent Number(s):
7348298
Application Number:
10/730,762
Assignee:
Ashland Licensing and Intellectual Property, LLC (Dublin, OH)
Patent Classifications (CPCs):
C - CHEMISTRY C10 - PETROLEUM, GAS OR COKE INDUSTRIES C10N - INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
C - CHEMISTRY C10 - PETROLEUM, GAS OR COKE INDUSTRIES C10M - LUBRICATING COMPOSITIONS
DOE Contract Number:  
W031-109-ENG-38
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Zhang, Zhiqiang, and Lockwood, Frances E. Enhancing thermal conductivity of fluids with graphite nanoparticles and carbon nanotube. United States: N. p., 2008. Web.
Zhang, Zhiqiang, & Lockwood, Frances E. Enhancing thermal conductivity of fluids with graphite nanoparticles and carbon nanotube. United States.
Zhang, Zhiqiang, and Lockwood, Frances E. Tue . "Enhancing thermal conductivity of fluids with graphite nanoparticles and carbon nanotube". United States. https://www.osti.gov/servlets/purl/970561.
@article{osti_970561,
title = {Enhancing thermal conductivity of fluids with graphite nanoparticles and carbon nanotube},
author = {Zhang, Zhiqiang and Lockwood, Frances E},
abstractNote = {A fluid media such as oil or water, and a selected effective amount of carbon nanomaterials necessary to enhance the thermal conductivity of the fluid. One of the preferred carbon nanomaterials is a high thermal conductivity graphite, exceeding that of the neat fluid to be dispersed therein in thermal conductivity, and ground, milled, or naturally prepared with mean particle size less than 500 nm, and preferably less than 200 nm, and most preferably less than 100 nm. The graphite is dispersed in the fluid by one or more of various methods, including ultrasonication, milling, and chemical dispersion. Carbon nanotubes with graphitic structure is another preferred source of carbon nanomaterial, although other carbon nanomaterials are acceptable. To confer long term stability, the use of one or more chemical dispersants is preferred. The thermal conductivity enhancement, compared to the fluid without carbon nanomaterial, is proportional to the amount of carbon nanomaterials (carbon nanotubes and/or graphite) added.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2008},
month = {3}
}

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Works referenced in this record:

Surfactant-Assisted Processing of Carbon Nanotube/Polymer Composites
journal, April 2000


Improving the heat transfer of nanofluids and nanolubricants with carbon nanotubes
journal, December 2005