Thermoset plastics
Plastics that behave like cement — once they have set, it's not possible to heat them up and change their shape. As a result, they cannot be easily recycled. Examples include epoxy and silicone.
Plastics that behave like cement — once they have set, it's not possible to heat them up and change their shape. As a result, they cannot be easily recycled. Examples include epoxy and silicone.