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Old 11-29-2021, 09:45 PM   #1
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How is glass bonded in aquariums ?

Most have bonded glass tanks
However,, how many know just how the glass is bonded ?
Yes, most know a special silicone is used but, how does that safely bond glass in our tanks?

This is basically how....
"Silicone is a polymer mainly composed of silicon and oxygen. Glass is mostly silicon dioxide, so if the silicone is in contact with glass as it cures, it can form a very strong bond "

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Old 11-30-2021, 02:52 AM   #2
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Well I take a simplistic view; silicon is glass glue so the glass panels are 'glued' together with glass glue
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Old 11-30-2021, 12:29 PM   #3
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Yeah, we can discuss semantics of course.
However, the fact remains that silicone boding glass does not bond like what we think of glue does.

A glue bonds by what is to be bonded absorbing a lot of the glue as it hardens.

Silicone bonds glass by a chemical reaction between the two.
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Old 12-02-2021, 05:04 PM   #4
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I don't think you're correct. Pretty sure it's suction. A chemical reaction would have the glass scarred/altered when silicone is removed. A chemical bond would be when fusing pvc with pvc cement, that alters the compounds and they become one. Silicone and glass never become one, the silicone relies on an even application, clean surface and pressure to cure and hold. Acrylic using a chemical weld similar to pvc, when acrylic is chemically welded properly, 2 pieces become one.
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Old 12-03-2021, 03:13 AM   #5
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one can "think" anything they want but facts can nor be disputed.
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Old 12-03-2021, 05:18 AM   #6
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Quote:
Originally Posted by Joe_D View Post
one can "think" anything they want but facts can nor be disputed.
These facts you speak of? Any links?
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Old 12-03-2021, 09:07 AM   #7
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Your misunderstanding this, if silicone chemically bonded glass then it would take much more than a simple razor blade to disassemble a tank. While it may not be the exact same as gluing 2 pieces of wood together it is essentially the same thing. There is no “chemical bonding” of the glass, there is curing time , or drying time, for the silicone to harden and set up.
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Old 12-03-2021, 12:15 PM   #8
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" While it may not be the exact same as gluing......"
Is that not what have been saying?

Silicone on glass does create a chemical reaction between the two which causes the bonding

Glue cases no chemical between it and what it is being bonded it just dries to something relatively hard add the more it is adsorbed the better the bond.
it is common knowledge that anything that will not absorb a glue to one extent or another, the harder it is to bond with a common "glue"
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Old 12-03-2021, 06:00 PM   #9
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This was something i found about glass/silicone bonding in structural silicone glazing (SSG) systems used in buildings. Ive no idea if this is relevant to aquarium building or not.

https://www.linkedin.com/pulse/explo...ne-glass-olson

If i read that correctly its not so much a chemical reaction, but more similarities in the molecular structure of glass and silicone that cause the two to mesh. I'm imagining something akin to velcro or lego that forms a strong bond but can still be pulled apart and seperated.
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Old 12-03-2021, 10:19 PM   #10
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Yeah , maybe chemical reaction is the wrong term to use but in the end the bonding processes is not like glue bonding wood, etc
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