Tin foil sound deadening?
11-14-2003, 10:21 AM
#1
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I have a bit of experience with "constrained layer dampening" with high end home speakers. Basically, multiple layers of material are laminated together using an adhesive that has sound absorbtion properties. This technology is commonly used in front baffles, but can also be found in other areas of top end speaker cabinets. The adhesive converts mechanical energy(vibrating material) into thermal energy.(Heat)
I'm not going to get into specifics for cabinetry here, but I was thinking that the same principle could be applied with tin foil. I was thinking of layering a sound absorbing adhesive with tinfoil. The finished product would be of maybe 5 layers of tin foil and adhesive. The "sheets" of this could then be applied the same as Dynamat for example.
I'm not saying the end product would be cheaper than say Dynamat. But, the high dampening properties of this mystery adhesive would far exceed that of Dynamat, or many other products.
Has anybody tried anything like this before?
Adam
I'm not going to get into specifics for cabinetry here, but I was thinking that the same principle could be applied with tin foil. I was thinking of layering a sound absorbing adhesive with tinfoil. The finished product would be of maybe 5 layers of tin foil and adhesive. The "sheets" of this could then be applied the same as Dynamat for example.
I'm not saying the end product would be cheaper than say Dynamat. But, the high dampening properties of this mystery adhesive would far exceed that of Dynamat, or many other products.
Has anybody tried anything like this before?
Adam
11-14-2003, 10:45 AM
#2
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Foil-lined sound deadening is awesome. Especially if you cover the entire interior of your car with it and then leave your car out in the baking sun during the summer. IT has this really awesome BBQ effect 
Only serious thing I would say about that would be with regards to the adhesive properties of the "mystery guck" to the foil. And can it hold up in high heat found in a car during the summer or will it create a huge slumping mess of poo in your doors or where-ever else you have applied it.
Best of luck............. interesting idea though. If it works, patent it and sell it [img]graemlins/thumb.gif[/img]
Only serious thing I would say about that would be with regards to the adhesive properties of the "mystery guck" to the foil. And can it hold up in high heat found in a car during the summer or will it create a huge slumping mess of poo in your doors or where-ever else you have applied it.
Best of luck............. interesting idea though. If it works, patent it and sell it [img]graemlins/thumb.gif[/img]
11-14-2003, 06:26 PM
#4
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The adhesive isn't heat sensitive, so yes we could have a BBQ. [img]smile.gif[/img]
The adhesive isn't very workable in thick layers by itself. 0.5mm is about as thick as you want to get at most. The layers of foil would allow you to build up a "sheet" of it. Plus foil is flexible and doesn't deteriorate.
Adam
The adhesive isn't very workable in thick layers by itself. 0.5mm is about as thick as you want to get at most. The layers of foil would allow you to build up a "sheet" of it. Plus foil is flexible and doesn't deteriorate.
Adam
11-15-2003, 07:56 AM
#5
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Foil may be flexible but IMO 5 layers is going to make it too stiff. Plus while foil is flexible it does not stretch which may lead to issues on irregular surfaces.
I would use a different material personally but feel free to experiment [img]smile.gif[/img]
I would use a different material personally but feel free to experiment [img]smile.gif[/img]
11-15-2003, 08:52 AM
#6
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I have already put as much sound deadening in my car as the interior trim panels will allow. This is a little project for something else.
I have to agree with you Dukk, 5 layers would be pretty thick. But in this case, it's what I'm aiming for.
Adam
I have to agree with you Dukk, 5 layers would be pretty thick. But in this case, it's what I'm aiming for.
Adam
11-16-2003, 04:18 AM
#8
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I"m going to go into hiding now on this. My little project has been re-classified 
The mystery adhesive is pretty special stuff. No, it's not made by 3M or any other large chemical company. It's made in Europe, and is kind of seasonal because of shipping temperatures. You can't allow it to freeze before it cures. It's ability to dampen is phenominal, but it is tempermental to work with.
I"ve seen a ball made of the cured stock dropped from a large height, and it didn't bounced at all!
And finally for the big surprise, no it's not black in colour, it's white, very white.
That's all I"m saying...
Adam
The mystery adhesive is pretty special stuff. No, it's not made by 3M or any other large chemical company. It's made in Europe, and is kind of seasonal because of shipping temperatures. You can't allow it to freeze before it cures. It's ability to dampen is phenominal, but it is tempermental to work with.
I"ve seen a ball made of the cured stock dropped from a large height, and it didn't bounced at all!
And finally for the big surprise, no it's not black in colour, it's white, very white.
That's all I"m saying...
Adam
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