PEEK (Polyether ether ketone) rods are highly resistant to a wide range of chemicals, making them suitable for various industrial applications. They exhibit excellent chemical resistance to organic and inorganic substances, including acids, bases, and hydrocarbons. PEEK is particularly resistant to aggressive chemicals such as sulfuric acid, nitric acid, and phosphoric acid, even at elevated temperatures. It also withstands exposure to solvents like acetone, alcohols, and chlorinated solvents without significant degradation.
However, PEEK's chemical resistance has some limitations. It is susceptible to attack by concentrated sulfuric acid and some halogenated compounds at high temperatures. Additionally, prolonged exposure to strong oxidizing agents may lead to some degradation. Despite these limitations, PEEK's overall chemical resistance is superior to many other polymers, including polycarbonate and nylon.
The material's resistance to chemicals is complemented by its thermal stability, mechanical strength, and low moisture absorption, which further enhance its performance in chemically aggressive environments. PEEK maintains its properties over a wide temperature range, typically from -40°C to 260°C, making it suitable for applications where both chemical resistance and high-temperature performance are required.
In summary, PEEK rods offer excellent chemical resistance, making them ideal for use in harsh chemical environments, such as in the chemical processing, oil and gas, and aerospace industries. Their ability to withstand a broad spectrum of chemicals, combined with their mechanical and thermal properties, makes them a preferred choice for applications demanding high performance and durability.