We have identified two epoxies that stick to rocks when applied underwater.
They are "Smart Glue" and Ace hardware store #10232 water-proof epoxy putty.
When sold in bulk, Smart Glue is named PSI-326 (Polymeric Systems). Use it
in small amounts. The reaction is exothermic! Use the fume hood.
Today's goals:
- Verify that the two adhesives will stick to volcanic rock
when applied underwater.
- Test adhesives in ice water to be sure that they will cure
under cold conditions.
Send out one group to collect three buckets of seawater.
Send out another group to collect a bucket of ice cubes from the mess.
Chill some seawater. You may add the ice to the water, which will lower
the salinity. You could also set a container of seawater onto a bed of
ice to cool the seawater without diluting it.
Smart Glue
- Glue a piece of glass to the volcanic rock under seawater.
- Glue a piece of metal to the volcanic rock under seawater.
- Mix up a batch of Smart Glue with glitter. Attempt to write "MMA" on
one of the rocks under seawater, using a wooden stick as a brush.
- Glue glass or metal to a volcanic rock in chilled seawater. Measure
the temperature of the water. Observe whether the cure time is
longer in cold water.
- After you have recorded all your observations, put all the samples in
one covered tray and store in laboratory at room temperature until
Thursday when we will show them to Dr. Tivey.
Ace water-proof epoxy putty
- Glue a piece of glass to the volcanic rock under seawater.
- Glue a piece of metal to the volcanic rock under seawater.
- Glue glass or metal to a volcanic rock in chilled seawater. Measure
the temperature of the water. Observe whether the cure time is
longer in cold water.
- After you have recorded all your observations, put all the samples in
another covered tray and store in laboratory at room temperature
until Thursday when we will show them to Dr. Tivey.
