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#1
08/16/2005, 05:06 AM
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Bonding glas and acrylic???
Hi all,
I would like to know if there is a method of glueing acrylic with glas??? I know that the main problem is the higher thermal expansion of the acrylic compared to glas und that normal silicon does not bond to acrylic well. The idea behind this is the following: I would like to build a smal tank (< 7 gallons) out of glas (scratch resistance...) and because I need several holes in the backwall I thought it would be a good idea to use a thick piece of black acrylic as the backwall (to drill holes, incorporate an overflow etc.). can anybody help me out??? Alatar
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To see a world in a grain of sand And a heaven in a wild flower Hold infinity in the palm of your hand And eternity in an hour -William Blake |
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#3
08/16/2005, 10:22 AM
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I got GE plastic and polycarbonate silicone sealant.
anyone know about this? only thing that concerns me is one line that says its "excellent for marine applications above the waterline"... but it says it will bond to glass and acrylic. tough call. not sure if Ill use it or if I will have to find some kind of weld stuff or something.
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current tanks:75g |
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#5
08/17/2005, 03:10 AM
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MCary
Isn´t epoxy too stiff to compansate for the difference of thermal expansion in my particular application? Alatar
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To see a world in a grain of sand And a heaven in a wild flower Hold infinity in the palm of your hand And eternity in an hour -William Blake |
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#6
08/17/2005, 03:15 AM
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does glass really adhere(sp?) to anything? I mean; you cant melt glass to glass like you would with acrylic. its just a simple silicone sealant. with that said; that same sealant should bond and adhere to acrylic just as well as it could to glass.
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current tanks:75g |
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#7
08/17/2005, 05:29 AM
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Quote:
__________________
Bob I feel sorry for people who don't drink. When they wake up in the morning, that's the best they're going to feel all day. -Frank Sinatra |
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#8
08/17/2005, 08:28 AM
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I have used Marine Goop with great success when holding acrylic to glass. That Marine Goop holds like you would not believe to acrylic. I have to use a dull razor blade to get that stuff off.
Oh and yes I do have stuff inside my tank being held together by Marine Goop with no problems what-so-ever for the past 7 months. |
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#10
08/18/2005, 09:06 AM
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I agree with MCary. Dont try it. Try doing a search in the forums and you will see the two materials dont adhere well to each other.
you can get silicon to hold a piece of acrylic in place inside a glass tank, for overflow or baffles, but making one wall acrylic while the other three are glass is risking alot. best bet it to go with all glass and drill a hole.
__________________
"What is a scientist after all? It is a curious man looking through a keyhole, the keyhole of nature, trying to know what's going on." -Jacques Cousteau |
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#12
08/18/2005, 12:18 PM
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Ok guys thanks anyway,
I´ll stick to glass and just drill the holes. Alatar
__________________
To see a world in a grain of sand And a heaven in a wild flower Hold infinity in the palm of your hand And eternity in an hour -William Blake |
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#13
08/18/2005, 03:13 PM
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Just make the back glass thicker and drill it...you can even use a dremel with a diamond bit...
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