Introduction Of FFKM

FFKM stands for perfluoroelastomer. Here is an introduction About it:

Definition and Composition

FFKM is a special kind of perfluorinated polymer rubber. It is an elastic synthetic material made up of perfluorinated polymers, in which all hydrogen atoms in the polymer chain are replaced by fluorine atoms. Its composition mainly includes perfluorinated monomers like trifluoroethylene and tetrafluoroethylene, cross-linking agents to improve mechanical and structural stability, and fillers and additives such as carbon black and silica to adjust physical properties.

Properties

- Outstanding Chemical Resistance: FFKM can resist concentrated sulfuric acid, nitric acid, hydrochloric acid and other strong acids, strong alkalis like potassium hydroxide and sodium hydroxide solutions, and organic solvents including ketones, ethers, esters and aromatic hydrocarbons. It also shows high resistance to oxidizing agents such as hydrogen peroxide and ozone.

- High Temperature Stability: FFKM can maintain its chemical and physical properties in extremely high or low temperatures, tolerating temperatures up to over 327 °C. It has excellent heat aging resistance, low volatility at high temperatures and can maintain good sealing performance. Its coefficient of thermal expansion is similar to that of many metals and engineering plastics.

- Excellent Compression Resilience: FFKM has high elasticity, low compression deformation, high resilience and low compression set, which means it can quickly recover its original shape after being compressed or deformed, and maintain its shape and dimensional stability even under high pressure.

Applications

FFKM is widely used in various fields. In the semiconductor industry, its high cleanliness and resistance to plasma make it an ideal material for sealing. In the petrochemical industry, it can withstand high temperatures and corrosive media in oil and gas extraction and refining. In the automotive industry, it is used in engine sealing and fuel systems. It is also used in the aerospace, military, pharmaceutical and nuclear industries.