Hello,
Recently I posted a message asking for help making soft polyurethane foams and received some great help from the group. I ended up using a TDI and ethylene oxide prepolymer and an ethylene oxide/propylene oxide polyol. Now I have a related question - I'd like to make a solid version of my foam - I'd like to be able to pour this into a mold without having to use high temps or injection molding etc. When I say solid I mean the unfoamed polyurethane elasomer. I've tried a few things, simply leaving out the water or Dabco or both. What I get is fine but it takes about 48hrs to cure to a solid, which is way too long for my application. I'm using DBDTL as a catalyst and tried adding a little more to speed up the cure with limited success. Am I going about this the wrong way ? do I need a different catalyst ? should I be doing this in a solvent ? any help would be appreciated.
Kind regards,
Gillian