I have been researching the possibility for a composite stator for BLDC designing. It seems that the possibility exist. Here is some interesting reading: https://www.sintex.com/en/about-sintex/cases/item/stator-design-med-smc
Unfortunately these composites need very high pressure and special tooling.
The upside to SMC is apparently better field strength compared to laminated stators, but with the tradeoff of higher stator loses. Due to the manufacturing process, the stator can be designed to hold more turns of copper wire, compared to laminated stators, which makes it possible to design more compact motors.
These composites have a 200 celsius specification, so they must use a industrial high temp epoxy.
I think it is a danish company, so I will try to reach out and ask about the cost.
It would be soooo cool to se such a stator in combination with a halbach array.