Celazole® PBI

Celazole® PBI is the highest performance engineering thermoplastic available today. It offers the highest heat resistance and mechanical property retention over 400°F of any unfilled plastic. It has better wear resistance and load carrying capabilities at extreme temperatures than any other reinforced or unreinforced engineering plastic. As an unreinforced material, Celazole® PBI is very "clear" in terms of ionic impurity and it does not outgas (except water). These characteristics make this material very attractive to semiconductor and for vacuum chamber applications. Celazole® PBI has excellent ultrasonic transparency which makes it an ideal choice for parts such as probe tip lenses in ultrasonic measuring equipment.

Celazole® is also an excellent thermal insulator. Other plastics in melt do not stick to PBI. These characteristics make it ideal for contact seals and insulator bushings in plastic production and molding equipment.

Engineering Note:

Celazole® PBI is extremely hard and can be challenging to fabricate. Polycrystalline diamond tools are recommended when fabricating production quantities. Celazole® PBI tends to be notch sensitive, radius all corners and edges chambered to maximize part toughness. High tolerance fabricated components should be stored in sealed containers (usually polybags) to avoid dimensional change due to moisture absorption. Components rapidly exposed to temperatures above 400°F (205°C) should be dried prior to use or kept dry to avoid deformation from thermal shock.