The vulcanization systems for FKM (fluoroelastomer) mainly include the following types:
| Vulcanization System | Principle | Features | Applications | Impact on Cost |
|---|---|---|---|---|
| Bisphenol Cure System | Uses bisphenol compounds (e.g., bisphenol A) for the vulcanization reaction. | – Excellent chemical resistance – High-temperature performance – Typical curing temperature: 160-180°C – Typical compression set: 10-20% | – Chemical equipment – Automotive engine seals – High-temperature and harsh chemical environments | – Higher raw material cost – Moderate processing cost due to curing temperature |
| Peroxide Cure System | Uses peroxides (e.g., dicumyl peroxide) as curing agents, often with co-agents (e.g., TAIC). | – Good heat aging resistance – Good mechanical properties – Slightly inferior chemical resistance compared to bisphenol cure systems – Typical curing temperature: 170-200°C – Typical compression set: 15-25% | – Aerospace – Automotive seals – Applications requiring high elasticity and excellent aging resistance | – Moderate raw material cost – Higher processing cost due to curing temperature and handling of peroxides |
| Amino Acid Cure System | Uses amino acid compounds for the vulcanization reaction. | – Good chemical resistance – High-temperature performance – Narrower range of applications – Typical curing temperature: 150-170°C – Typical compression set: 12-22% | – Specific high-temperature and high-pressure conditions – Specialized seals | – Higher raw material cost – Lower processing cost due to efficient curing |
| Curing Agent Cure System | Uses specific curing agents (e.g., imide compounds) for vulcanization. | – Allows vulcanization at lower temperatures – Faster cure rate – Suitable for rapid production processes – Typical curing temperature: 140-160°C – Typical compression set: 8-18% | – Fields requiring quick production and efficient processing – Mass production in the automotive industry | – Moderate raw material cost – Lower processing cost due to faster and lower temperature curing |
Different vulcanization systems impart different performance characteristics to FKM rubber, making it suitable for various complex working environments and application requirements. When selecting an appropriate vulcanization system, it is essential to consider the specific usage environment and performance requirements to ensure the optimal performance of the fluoroelastomer products.
Reference Reading:
How to measure the hardness: shore A,B,C,D?
How to measure the density of rubber material?
How to Evaluate the Resistance of Rubber to Oils and Other Solvents？
How to Evaluate the Low-Temperature Performance of Rubber?
How to Evaluate the Resistance of Rubber to Oils and Other Solvents？
How to choose between HNBR and AEM?
How to choose between HNBR and FKM(Viton) for O-Ring/gasket?
How choose Between FKM vs FVMQ?
When to use HNBR and Low Temperature HNBR(LT HNBR)?
Low Temperature FKM Rubber: Ideal for Automotive, Aerospace, and Chemical Processing
