Most rubber in everyday use is vulcanized to a point where it shares properties of both ; i.e. , if it is heated and cooled , it is degraded but not destroyed .
Once the rubber is vulcanized , it is a thermoset .
Most rubber in everyday use is vulcanized to a point where thermoset shares properties of both ; i.e. , if thermoset is heated and cooled , thermoset is degraded but not destroyed .
Once the rubber is vulcanized , it is a thermoset .