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Freaky CA glue behaviour

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  • Member since
    November 2005
Freaky CA glue behaviour
Posted by Anonymous on Tuesday, October 19, 2004 11:20 AM
Yesterday I pulled out my bottle of gap-filling superglue (purple label) and dropped a drop on a playing card in order to dip into the drop with a piece of styrene rod and a funny thing happened, within a few seconds the glue drop on the card started to fog up and within seconds it was totally crystalized solid.
I looked at the bottle and the consistency of the glue inside the bottle appeared normal. It wasn't a new bottle but then again it was not that old either. I tried another drop an a scarp piece of styrene and the same thing happenend. After many tries spead over several hours, I concluded that the glue had simply gone bad for un unknown reason....stuff happens I guess...BUT WAIT !
The nex day, out of curiosity, it put a drop from the same bottle on an identical playing card and to my amazement the phenomenon had dissapeared, the glue stayed clear and liquid for several minutes just like it normally does !
I worked all evening with the same bottle and everything was back to normal.
After 33 years of modelling, can someone explain to me what has happenend here ? I have never seen CA glue go so bad so fast and certainly not come back to normal the next day.
Was it a planetary alignment thing or am I just going insane ?

Has anybody else ever experienced this phenomenon ?
If not I guess I will have to give a call to the producers of "Unsolved Mysteries"

Jimmy Cancino
Valleyfield, Qu├ębec, Canada
  • Member since
    November 2005
Posted by Anonymous on Tuesday, October 19, 2004 11:25 AM
Was it abnormally Damp or Humid??????
  • Member since
    May 2003
  • From: The flat lands of the Southeast
Posted by styrene on Wednesday, October 20, 2004 8:17 AM
I agree. High humidity would cause the glue to fog and cure almost immediately. In addition, if the card was wet somehow, or if there was any alkalinity in the card, the same would occur.

Gip Winecoff

1882: "God is dead"--F. Nietzsche

1900: "Nietzsche is dead"--God

  • Member since
    November 2005
Posted by Anonymous on Wednesday, October 20, 2004 8:31 AM
QUOTE: Originally posted by styrene

I agree. High humidity would cause the glue to fog and cure almost immediately. In addition, if the card was wet somehow, or if there was any alkalinity in the card, the same would occur.

Gip Winecoff


how does humidity and alklinity affect the curing of CA ? how does the stuff work anyway? a classmate of mine was asking me and i couldent give her an answer.
  • Member since
    April 2003
  • From: NSW, Australia
Posted by pingtang on Wednesday, October 20, 2004 8:41 AM
Here you go reggie, this will explain how the stuff works, and why humidity/ dampness will affect the curing:

http://science.howstuffworks.com/question695.htm

-Daniel
  • Member since
    November 2005
Posted by Anonymous on Wednesday, October 20, 2004 9:01 AM
does this mean if i drizzle water over CA it will accelerate it ? then whats in accelerator?
  • Member since
    November 2005
Posted by Anonymous on Wednesday, October 20, 2004 10:34 AM
It could be used as an Accellerator. It causes it to get even harder than Accelerator does. It also causes it to fog as well. (Which accelerator may not cause)
  • Member since
    May 2003
  • From: The flat lands of the Southeast
Posted by styrene on Wednesday, October 20, 2004 11:01 AM
Accelerator contains (usually) an organic solvent carrying an organic amine (a base), which is a source for lots of those hydroxy ions explained in the link above. Because water is a weak base--as well as a weak acid--it doesn't do a real good job as an accelerator.

Gip Winecoff

1882: "God is dead"--F. Nietzsche

1900: "Nietzsche is dead"--God

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