Celazole® U-Series

Unfilled PBI

Celazole® U-60 is an unfilled PBI polymer and comes in a fine powder suitable for compression molding to achieve higher strength. U-60 is commonly molded and machined into precision parts for industrial, chemical and petrochemical industries; aerospace; glass making; and liquid crystal display (LCD) panel manufacture.

Celazole®  PBI is ideal for applications where requirements cannot be met by other resins—in extreme high temperatures, in harsh chemical or plasma environments, or in applications where durability and wear resistance are important. Parts molded of Celazole® PBI are being used in semiconductor and flat panel display manufacture, electrical insulating parts, heat insulating applications, as well as seals, bearings and wear plates in various industrial applications. They are also being evaluated in demanding aerospace applications requiring outstanding strength and short-term high temperature resistance.

Parts are molded of U-60 grade Celazole® polybenzimidazole (PBI) resin, a unique organic polymer which does not burn in air and has extraordinary hightemperature resistance, along with excellent stability to chemicals and hydrolysis.

In high-temperature exposure to organic chemicals, Celazole® molded parts offer outstanding chemical resistance and property retention, even after extended exposures. In hot caustic, Celazole® parts out-perform other high-performance resins. And Celazole® U-60 parts have been used successfully in a variety of harsh environments, ranging from oil fields to aerospace applications. In the field, Celazole® parts have performed well when exposed to hydraulic and heat transfer fluids, chlorinated solvents, polyester, nylon, PEEK, and PES molten polymers, and metal-corrosion inhibitors – conditions too severe for most plastics.

Celazole®  parts are hydrolytically stable after exposure to high pressure steam or boiling water. Moisture absorption of Celazole® U-60 resin reaches equilibrium at 10-14% and, through solvation, some strength loss and swelling occur. However, Celazole® parts typically regain their original properties after dehydration. When constrained, as in valve assemblies, Celazole® U-60 parts have been used successfully in high-temperature, high-pressure steam environments.

25% Carbon Fiber reinforced PBI

Celazole® U-60 CF is an ultra-high strength carbon fiber reinforced compression molded PBI variant available as a stock shape. 25% CF reinforced PBI has 32 kpsi tensile strength, 42 kpsi flexural strength, and 65 kpsi compressive strength. Celazole®  parts are hydrolytically stable after exposure to high pressure steam or boiling water. Moisture absorption of Celazole® U-60 resin reaches equilibrium at 10-14% and, through solvation, some strength loss and swelling occur. However, Celazole® parts typically regain their original properties after dehydration. When constrained, as in valve assemblies, Celazole® U-60 parts have been used successfully in high-temperature, high-pressure steam environments.