how could i bound polyurethane and silicone ? Answered
I'm trying to make a two part model in polyurethane resin with a thin silicone membrane connecting them so it can expend and still be maintained by the silicone layer.
The problem is that i need to pour the silicone into the model, so i can't make them stick together with some coating or glue.
Instead of the silicone i thought about using polyurethane elastomer but it is usually not very elastic and does not age well when frequently teared neither.
So i'm searching for a way to pour silicone into polyurethan resin and make it stick. Maybe eventually by putting some fiber on the resin surface while wet so it'll get trapped in the silicone layer while it will catalyze but i doubt it'll resist to the tear strengh for a long term use.
Did any of you tried it or found a solution to that problem ?