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NanoBlox
Building Blocs for Nanotechnology
www.NanoBloxInc.com
Test Report
Date: June, 2006
Test Objectives:
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Determine change in thermal conductivity of ethylene glycol (5% solution)
with same solution plus addition of 0.7% (by weight) Nanodiamond solution.
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Determine change in thermal conductivity of water with a solution of water
plus addition of 0.7% (by weight) Nanodiamond solution.
Test Results:
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Thermal conductivity of the ethylene glycol solution with 0.7% Nanodiamonds
increased by an average of 16% compared to the ethylene glycol solution
without the Nanodiamonds. (See graph of test results on Page 2)
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Thermal conductivity of water with 0.7% Nanodiamonds increased by an
average of 15.3% compared to water without the Nanodiamonds. (See graph
of test results on Page 2)
Test Method:
Netzsch LFA 447 NanoFlash light flash system. (See below)
Test Method:
The Netzsch LFA 447 NanoFlash light flash
system was used. This tool generates
reproducible flash diffusivity data for
measuring the thermo-physical properties of
liquids and dispersions.
A Xenon flash lamp (conforms to ASTM E1461)
uses optical coupling to heat and read
sample surfaces. The Xenon lamp fires a
pulse at the sample’s lower surface while
the infrared detector measures the
temperature rise of the sample’s top
surface. Software then determines the
sample’s thermal diffusivity.
Specific heat is measured by comparing the
actual temperature rise of the sample to the
temperature rise of a reference sample of
known specific heat. Thermal diffusivity (a)
and specific heat (cp) are measured
simultaneously. These values and bulk
density (r) are used to calculate
conductivity (l) from the equation l = arcp.
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