I had a quick question about tape casting/slurry coating films in general, and was hoping for some insights on getting a freestanding tape of Silicon or Carbon/Alumina. I'm trying to get freestanding tapes that are 100 - 300 um thick to cut to size for a subsequent heat treatment process.
I'm having difficulty in getting the dried film to release and have no idea why. My substrate is silicone coated mylar (release film), binder is Polypropylene carbonate, and solvent is DMC (Dimethyl Carbonate). Solid weight loading is around 30 - 35 wt%, binder is 5 - 10 wt %, and solvent is the rest. Does anyone have experience with the same?
In addition, the Tg of the binder is 15 - 40 C. At room temperature, it is already clumps together if in pellet form. This is why I haven't added any plasticizers into the slurry.
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