What is the Difference Between VMQ and FVMQ?
🆚 Go to Comparative Table 🆚VMQ and FVMQ are two types of silicone rubbers with different properties and applications. The main differences between VMQ and FVMQ are:
- Chemical composition: VMQ stands for vinyl methyl silicone or silicone rubber, while FVMQ stands for fluorosilicone rubber or fluorovinylmethylsiloxane rubber.
- Temperature resistance: VMQ silicone rubber is known for its impressive temperature range and good compression set, while FVMQ silicone rubber can withstand even low-temperature applications up to -80°C.
- Hot air resistance: VMQ offers great hot air resistance compared to FVMQ.
- Chemical resistance: FVMQ silicone rubber has stronger bonds, which means fewer chemical reactions can take place, resulting in better chemical resistance.
- Tensile strength: VMQ has a poor tensile strength, while FVMQ has improved fuel and mineral oil resistance.
In summary, VMQ silicone rubber is ideal for high and low-temperature applications and offers excellent hot air resistance, while FVMQ silicone rubber has better chemical resistance and can withstand even low-temperature applications.
Comparative Table: VMQ vs FVMQ
Here is a table comparing the differences between VMQ and FVMQ:
| Property | VMQ (Vinyl Methyl Silicone) | FVMQ (Fluorosilicone) |
|---|---|---|
| Chemical Resistance | Limited fuel and oil resistance | Improved fuel and oil resistance due to fluorine content |
| Hot Air Resistance | Offers great hot air resistance | Lower hot air resistance compared to VMQ |
| Tear Strength | Relatively high tear strength | Relatively low tear strength |
| Flex Cracking Resistance | Good flex cracking resistance | Fair flex cracking resistance |
| Thermal Resistance | Excellent thermal resistance | Excellent thermal resistance |
| Longevity in Hostile Environment | Higher longevity in hostile environment | Higher longevity in hostile environment |
| Flame Retardancy | Flame retardant properties | Flame retardant properties |
VMQ (Vinyl Methyl Silicone) and FVMQ (Fluorosilicone) are two different types of silicone rubbers. The key difference between VMQ and FVMQ is that VMQ offers great hot air resistance compared to FVMQ. Additionally, VMQ has limited fuel and oil resistance, while FVMQ's resistance is improved due to the fluorine content. Both materials have excellent thermal resistance, longevity in hostile environments, and flame retardancy properties.