why don't it stick to the inside of the tube ???
2007-02-06 10:10:35 · 13 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
Super glue is acetone based. The reaction that makes super glue stick is triggered when the acetone evaporates. But if there is nowhere for it to evaporate, then it will not stick to the inside of the tube. That is, unless there is a break in the tube and the acetone evaporates SLOWLY. So instead of sticking it becomes one big glob of super glue surrounded by a tube-shaped piece of tin.
2007-02-06 10:14:01 · answer #1 · answered by anon 5 · 0⤊ 1⤋
The stuff sold as Superglue is cyanoacrylate. (Anything with that many Ys in it must be good stuff!) It can be used on metal and provides an instant strong bond. However, the bond weakens after a few days. Many metals (especially aluminium) have an oxide layer. The glue will stick to this, but the oxide will peel off the metal. If you want to stick a decorative metal star onto your filing cabinet, cyanoacrylate is ideal. If you want to mend a broken strut on your steel staircase, you need a different approach.
2016-05-24 00:55:34 · answer #2 · answered by ? 4 · 0⤊ 0⤋
This is an old one...
Have you ever left the top off or used a tube once and come back to use it again a month later and its rock solid????
Its stuck to the inside of the tube!!!!
2007-02-06 10:15:32 · answer #3 · answered by Woody 2 · 0⤊ 1⤋
Probably because it needs to be exposed to the air to work and cant do that inside a sealed tube.
2007-02-06 10:14:37 · answer #4 · answered by mistickle17 5 · 0⤊ 1⤋
The inside of the tube is free from all moisture, therefore the bond is never formed.
2007-02-07 03:03:16 · answer #5 · answered by Bigfoote 2 · 0⤊ 1⤋
maybe the tube is in zee` brain?
so what we have to do is open the skull,
using the Screw Top, Zip Lock Brain Surgery... . originating from Dr. Michael Hfuhruhurr... .
Superglue should now help your tube be fixed in its original position, oh btw, please use a mirror as you could end up becoming left foot `v` right hand or right foot `v` left hand a mixy upasis.. .
2007-02-06 10:23:14 · answer #6 · answered by fluxpattern® 5 · 0⤊ 1⤋
Super glue is a monomer that is liquid until it polymerizes in the presence of humidity. There is no humidity in the bottle, so it remains liquid and does not stick. But if you wait too long and have an old bottle of super glue, the content might polymerize on its own, and you have a blob of clear and brittle plastic.
2007-02-06 10:14:55 · answer #7 · answered by Vincent G 7 · 1⤊ 2⤋
Superglue (Cyanoacrylic) drys in the presence of water! (or water in the air)
It was invented for gluing wounds together in Vietnam.
2007-02-07 02:07:18 · answer #8 · answered by gam3fr3aks 3 · 0⤊ 1⤋
It can cure off in the tube, because they need air to cure off and some air can get in sometimes.
2007-02-06 10:23:47 · answer #9 · answered by R.E.M.E. 5 · 0⤊ 1⤋
Because there is no air in the tube - that is why it sets - when it meets the air.
2007-02-06 10:14:51 · answer #10 · answered by Bexs 5 · 0⤊ 1⤋