PEROXAN PB-50 P is used for the curing of unsaturated polyester resins at high temperatures.
PEROXAN PB-50 P is preferred for the curing of free flowing UP resin based hot press moulding formulations (GMC) in the temperature range from 140° to 160°C.
Depending on application and working conditions, the following peroxide and when applicable cobalt accelerator dosage levels are recommended:
PEROXAN PB-50 P: 2,0 to 4,0 phr
PEROXAN PB-50 P is recommended for the crosslinking of NBR, SBR, EP(D)M, LDPE and EVA. Rubber compounds containing PEROXAN PB-50 P have moderate processing safety in combination with a very high speed of cure.
Safe processing temperature (t2): 100°C
Typical crosslinking temperature (t90): 140°C
The safe processing temperature t2 is defined as the temperature, at which the scorch time is longer than 20 minutes. The typical crosslinking temperature t90 is defined as the temperature at which 90% of the crosslinks in the compound are formed within about 12 minutes.