Micro balloons are spherically shaped silica hollow 'beads' that are so
small they appear as simply white powder. Because they are hollow, they are
very light. They are used as a lightweight filler for epoxy, to make a paste
for creating fillets or other epoxy 'fill' applications. The resultant
mixture of epoxy and microballoons is not considered particuarly strong, but
may serve more than adequately for some structural needs. There are many
other useful fillers for expoxy, depending on the desired strength,
flexibility, color, and weight of the resulting mixture. Some of these
include finely chopped carbon fiber, finely chopped cotton fiber, wood flour
(very fine wood dust), etc. There are even fillers where each particle is a
little flat 'plate' shape. The ability to mix literally different shapes of
micro-fill into epoxy is one of the things that makes composite construction
aspire to idealized structure at the microscopic level. Creating different
epoxy 'butters' with combinations of these fillers tailored to specific
structural needs is part of being a skilled builder in composites.
Lift,
Scobie in Seattle
> -----Original Message-----
> From: Liveto Soar [mailto:[EMAIL PROTECTED]]
> Sent: Friday, April 20, 2001 8:03 AM
> To: [EMAIL PROTECTED]
> Subject: [RCSE] micro balloons
>
>
> what the heck is a micro balloon?
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