[hackerspaces] liquid based non expanding insulation - name?

Frantisek Apfelbeck algoldor at yahoo.com
Fri Jun 1 00:51:39 CEST 2012

Well I need something which you can keep in a decent shape for few years, cleaning it, putting up to 20 kg of weight in brewing containers in it, being ready for the spillages etc. So polystyren would be good but on the outside, inside has to be more sturdy and chemical inert. Otherwise yes, polystyren is great and I can still use it for the insulation layer in between the internal and external layers.

Thanks for the tip, I will keep you posted.

Frantisek Algoldor Apfelbeck

biotechnologist&kvasir and hacker


"There is no way to peace, peace is the way." Ghandi

 From: Matt Goodman <meawoppl at gmail.com>
To: Hackerspaces General Discussion List <discuss at lists.hackerspaces.org> 
Cc: Frantisek Apfelbeck <algoldor at yahoo.com> 
Sent: Friday, June 1, 2012 4:43 AM
Subject: Re: [hackerspaces] liquid based non expanding insulation - name?

Does it have to be structural?  Polystyrene beads are _cheap_ and pack nicely.  Ditto packing peanuts.  
--Matthew Goodman

Check Out My Website: http://craneium.net
Find me on LinkedIn: http://tinyurl.com/d6wlch

On Thu, May 31, 2012 at 12:12 PM, Chris Weiss <cweiss at gmail.com> wrote:

might be out of your budget, but I've found the great stuff "pro"
>window and door cans to expand with far less force than the single use
>window and door stuff.  There's also quite a lot more in the can, far
>more than just the difference in can size.  Also with the gun, you can
>use a small amount and then let the gun sit with the can on it for up
>to a month and won't cure, great for prototyping iterations like you
>seem to be doing.  Instead of 1 can per iteration, you might get 4-5
>iterations per can.
>On Thu, May 31, 2012 at 10:00 AM, Frantisek Apfelbeck
><algoldor at yahoo.com> wrote:
>> Hi to all,
>> I need to insulate around 5-10 cm space all around an inner polyethylen (PE)
>> box (5 mm thick, cube, a=500 mm) and between it's outer MDF board based
>> shell (12 mm thick, cube, a=600 mm). The device is going to be an
>> experimental incubator, so temperature insulation is crucial. I have tried
>> to use polyurethane foam but it is expanding therefore it would distort the
>> soft PE internal layer. I used partly a polystyrene board for the back but
>> the boards do not fit exactly (thickness) and due to the fact that I used
>> screws and brackets in the project a lot it would be hard to put the boards
>> in anyway.
>> The best thing in this moment would be to fill the spaces between the boxes
>> with some liquid un-expanding insulation which would get in all the spots,
>> become firm and I would be fine. The plan is that I would insert the inner
>> PE box, fasten it, flip the whole box on it's back side and fill the gap
>> between PE box and MDF box up with the insulation and "happy ever after".
>> Alternatively would you know if it would be feasible to brake down the
>> polystyren boards on a small pieces and mix them with some glue and apply it
>> in a similar manner? My budget for the insulation is $20-40 and I'm now in
>> Seoul South Korea.
>> Thanks a lot for any help! It is a prototype so a great learning experience
>> but I have spend more than 20 hours on building two smaller size simple
>> boxes - bit slow I would say.
>> Sincerely,
>> Frantisek Algoldor Apfelbeck
>> biotechnologist&kvasir and hacker
>> http://www.frantisekapfelbeck.org
>> "There is no way to peace, peace is the way." Ghandi
>> _______________________________________________
>> Discuss mailing list
>> Discuss at lists.hackerspaces.org
>> http://lists.hackerspaces.org/mailman/listinfo/discuss
>Discuss mailing list
>Discuss at lists.hackerspaces.org
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.hackerspaces.org/pipermail/discuss/attachments/20120531/4207be86/attachment.html>

More information about the Discuss mailing list