“We use 1184-M-T, 1184-M-B, and 1184-M-VT epoxies for various uses. What is a good solvent that can take apart lenses glued together using 1184-M-T adhesive?”
If your lenses are made of glass you have several options, as glass is resistant to the solvent removal methods suggested below:
There are a few chemicals that will dissolve or swell 1184-M-T or any other light-curable acrylate, such as Dichloromethane, MEK, or Acetone. It may take some time for the solvent to migrate all the way in between the laminate, so the time depends on the size of your parts. A more gentile method is to soak the lenses in isopropyl alcohol (IPA) or even use warm IPA with the help of an ultra-sonic cleaner. I would also suggest this method if your lenses are made of plastic since the solvents mentioned first will also damage it.
“I would like to attach 72D Pebax extruded tubing into the ID of a Polycarbonate tube. What is the appropriate gap-per-side if I want to use DYMAX 204-CTH UV- curable adhesive?”
The optimum gap size for UV bonding applications (in general) is 0.002-0.006 inches, or 0.05-0.15 mm. In catheter bonding applications, where a Pebax tube is being bonded into a Polycarbonate Y-connector, we often see bond gaps around 0.1 mm per side. The DYMAX 204-CTH-F family is a very good choice of products to use for this type of application and substrate combination. Another product to consider is 208-CTH-F.
Adhesives, Catheter Bonding, Medical