Stop heat transfer with rubber!

[bluecomp]

Hi all, I need to coat aluminium profiles with some kind of rubber in order to minimise the heat transfer through them, but I dont know any product that can do a thermal barrier. Any recommendation about product and process?

Many thanks

 

[bithkits]

How do you want to apply the coating? Spray on/layer/sheet/glue etc?

Adriaan.
I am an Engineer/part time student (Mechatronics) from South Africa.
Advice from lecturer: "Be warned - when you go into industry your boss will give you a thousand things to do and he wants them done yesterday!" So far he is right...

 

[bluecomp]

For better production I think that spray would be good. But I am open to other process, since they will be productive. Thanks bithlits.

 

[unclesyd]

Why do you need rubber, elastomer ?

What temperatures are you considering?

Most elastomeric materials fail at lees than 200°C

 

[bluecomp]

The aim is to limit the heat loss from the house interior to the exterior, because aluminium is good in transfering the thermal energy to outside and vice versa. The rubber improves tactile feedback and minimizes heat loss.

 

[Pud]

Better not to have to worry about Al:

http://www.exelcomposites.com/Engli...dDoors/tabid/9145/language/fi-FI/Default.aspx

http://www.tynevalleyplastics.co.uk

 

[bluecomp]

you're right Pud, but the producer has thousands of feet in inventory on hand and want to find a solution. Many thanks for the web site.

 

[unclesyd]

You might want a to investigate coatings. insulating ceramic, such as those offered by Nationwide Coatings.

http://www.nationwidecoatings.com/prod10.htm

 

[bluecomp]

Ok unclesyd, I will see the site. Grateful

 

[IRstuff]

This aluminum used how? Unless the rubber, or whatever, coating is quite thick, its insulation value will be pretty marginal, compared to something intended to insulate a house.

There are other approaches besides a solid material. Thin (>13 mm, <20 mm) air gaps work tolerably well; fiberglass insulation is mostly air, when you get right down to it. It's basically an air gap that is prevented from convecting by the fiberglass. Air has an R-value of about 5.5 per inch of thickness, assuming no convection.

see

http://en.wikipedia.org/wiki/R-value_(insulation)#Typical_per-inch_R-values_for_material

for a listing of R-values for different materials

TTFN

FAQ731-376

 

[Demon3]

Foams are the best insulators so my advice would be to look for a foamed plastic or rubber.

Chris DeArmitt PhD FRSC CChem

http://www.phantomplastics.com

Consultant to the plastics industry