Copper Powder
For Heat Conductivity
Copper metal is one of the best materials for
heat conductivity. That is why many radiators, cooling coils and heating coils
are made of copper.
This article is about heat conductivity of
copper and use of copper powder in production of heat conductive fillers, heat
conductive pastes and heat conductive liquids.
What if you need to fill up a gap with a heat
conductive substance? For example when you want to maximize the heat exchange
between a pipe and a thermostat sensing bulb, you can fill up the gap with a
copper paste or aluminum paste. (Aluminum is another good heat conductor!).
A heat conductive paste can be made by mixing
copper powder and a binder. Depending on the application and the expected
temperature range you may choose a two part epoxy binder, some oil based resin
binder or any of the water soluble natural or synthetic binders.
Many copper powders may be used to make heat
conductive binders. Among them
CU301
or
CU301-E are recommended for large gaps (more than 3 mm wide) and
CU7005F
for small gaps (less than 3 mm wide).
How to choose a binder for heat conductive
copper paste?
In addition to the operation temperature, there
are two other factors affecting your choice of binder for a heat conductive
copper paste.
The first factor is the base material. You must
make sure that your binder can adhere to the base material and remain secure in
your operating temperature. You must also make sure that the binder does not
cause corrosion on your base materials.
The second factor is the expected life for the
paste and if you may ever have to remove it. Some compounds are easy to remove
and some others cannot be removed without damaging the adjacent parts.
Questions? Please call
973-405-6247 to discuss your specific needs.
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