eva only protection

[conntaxman]

eva

Why use eva if you already encapsulated in resin? Is it possible to use just epoxy in front and back and some ridgid backing material? Maybe frame too for added strengh. Would something like this sufficiently protect portable solar panel that never left outside for long time?

============= Hello Bratan., from all that I can see/read/done/ it is only the Front of the cell that has to be protected from weather and air.So after encapsulateing the cell in what ever material, you shouldn't even need a backing.The backing is more for protection.All mine are doing well.And the last panels i didn't even coat the front of the cell, or encapsulate the cell, and they are also just like the first day. Like I said I do it the same way as a thermopane window, with silica in between the glasses. edges sealed with sil. and with an Alu. frame. I also put sil. on the inside of the Alu. frame when I put it together.
John

[Bratan]

============= Hello Bratan., from all that I can see/read/done/ it is only the Front of the cell that has to be protected from weather and air.So after encapsulateing the cell in what ever material, you shouldn't even need a backing.The backing is more for protection.All mine are doing well.And the last panels i didn't even coat the front of the cell, or encapsulate the cell, and they are also just like the first day. Like I said I do it the same way as a thermopane window, with silica in between the glasses. edges sealed with sil. and with an Alu. frame. I also put sil. on the inside of the Alu. frame when I put it together.
John

Awesome, thanks John!

[Naptown]

============= Hello Bratan., from all that I can see/read/done/ it is only the Front of the cell that has to be protected from weather and air.So after encapsulateing the cell in what ever material, you shouldn't even need a backing.The backing is more for protection.All mine are doing well.And the last panels i didn't even coat the front of the cell, or encapsulate the cell, and they are also just like the first day. Like I said I do it the same way as a thermopane window, with silica in between the glasses. edges sealed with sil. and with an Alu. frame. I also put sil. on the inside of the Alu. frame when I put it together.
John

Than explain why no manufacturer on the planet leaves the back open on a module. The back is sealed with EVA + tedlar
In the old days it was Sylgard. If you leave the back open unless you live in the Sahara Desert moisture will get into the cell and destroy it.

[Mike90250]

note - EVA is a hot melt adhesive, it does not provide any water vapor protection, that is the job of the front glass and rear tedlar. It is also somewhat compliant, and flexes internally a bit to prevent cell fracture.

[Naptown]

note - EVA is a hot melt adhesive, it does not provide any water vapor protection, that is the job of the front glass and rear tedlar. It is also somewhat compliant, and flexes internally a bit to prevent cell fracture.

that and since glass is basically silicon the glass and cells have the same coefficient of expansion.

[madhawa101g]

============= Hello Bratan., from all that I can see/read/done/ it is only the Front of the cell that has to be protected from weather and air.So after encapsulateing the cell in what ever material, you shouldn't even need a backing.The backing is more for protection.All mine are doing well.And the last panels i didn't even coat the front of the cell, or encapsulate the cell, and they are also just like the first day. Like I said I do it the same way as a thermopane window, with silica in between the glasses. edges sealed with sil. and with an Alu. frame. I also put sil. on the inside of the Alu. frame when I put it together.
John

Thanks for info!!!