Expanding epoxy foam?

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piperdown
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Re: Expanding epoxy foam?

Post by piperdown » Wed May 01, 2019 7:31 am

https://doc.jamestowndistributors.com/u ... 5.3.18.pdf

Water absorption <= 0.06 lbs/sq ft

Looks PU expanding foam has the ability to absorb water too, although I haven't looked at converting any numbers to percentages.
I haven't looked at the buoyancy numbers in detail but I don't think the epoxy foam is as buoyant as the PU foam.

I was only interested in it due to the slower expansion rate, but if it's not as buoyant I won't be using it.


Eric (aka, piperdown)

"Give an Irishman lager for a month and he's a dead man. An Irishman's stomach is lined with copper, and the beer corrodes it. But whiskey polishes the copper and is the saving of him." --> Mark Twain

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OrangeQuest
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Re: Expanding epoxy foam?

Post by OrangeQuest » Wed May 01, 2019 8:33 am

They do make the statement that it could be used where you would use foam core or honeycomb.
"that it isn't just an ordinary sort of boat. Sometimes it's a Boat, and sometimes it's more of an Accident. It all depends." "Depends on what?" "On whether I'm on the top of it or underneath it.

A. A. Milne

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Netpackrat
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Re: Expanding epoxy foam?

Post by Netpackrat » Wed May 01, 2019 11:02 am

The dude in the video wants to use it in his rudder, where the buoyancy would not necessarily be desirable anyway

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