ComPlex Plastics Inc.
PRODUCTS LIST & TECHNICAL DATA
Celazole®
Celazole® PBI (polybenzimidazole) is a unique and highly stable linear heterocyclic polymer. U-series indicates virgin PBI. Inherent to the repeating benzimidazole unit, PBI exhibits excellent thermal stability, resistance to chemicals, acid and base hydrolysis and temperature resistance. Depending upon the application and duration – this PBI can withstand temperatures as high as 430C, and in short bursts, to 760C ( THAT IS 1400 F ). PBI is a thermoplastic polymer with a Tg of 427C. It does not burn. And it is not limited to high temperatures. PBI maintains its properties as low as -196C.
Ideally suited for its application in extreme environments, PBI can be formed into stock shapes and subsequently machined into high precision finished parts. Since PBI does not have a melt point, moldings virgin PBI polymer can only be formed in a patented high temperature, high pressure compression molding process.
PBI is highly resistant to deformation, and has low hysterisis losses and high elastic recovery. PBI exhibits ductile failure, and may be compressed to over 50% strain without fracture. Celazole® PBI has the highest compressive strength of any thermoplastic or thermosetting resin at 58 ksi.
There is no weight loss or change in compressive strength of Celazole® PBI exposed to 500F in air for 500 hours. At 700F, no weight or strength change takes place f100 hrs.
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