Parcure 275
Nitrite/Nitrate Based Salt
Description
Molten salt baths are in widespread use for continuous curing (vulcanization) of rubber extrusions. Salt baths have advantages over alternate curing methods such as oils, hot air, & steam for several reasons:
- Molten salt has a high heat capacity and rate of heat exchange e.g. – six times that of air allowing for relatively shorter curing times.
- Salt curing systems are insulated units with low heat losses compared to air or steam.
- Salt is relatively inert and allows a range of temperatures suitable for the curing of a wide range of rubber extrusions. No swelling or surface attack happens as with alternate methods.
- Salt is 100% water soluble enabling easy clean-off.
PARCURE 275 is an eutectic mixture of nitrate/nitrite based inorganic salts used for this application. It is exceptionally fluid and chemically & thermal stable in the molten state when used within its working range.
Key Properties
- Parcure 275 offers shorter curing times due to its high heat capacity, being six times that of air.
- It remains chemically and thermally stable within a temperature range of 300 to 575ºF.
- The product is 100% water-soluble for easy cleanup and environmental safety.
- Suitable for most polymers with specified temperature limits to prevent degradation.
- Non-flammable but a strong oxidizing agent, requiring careful handling and storage away from combustibles.
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