Description

Polybenzimidazole (PBI) Fibers represent the pinnacle of high-performance synthetic materials, engineered for extreme environments where conventional polymers fail. This product, Polybenzimidazole Fibers CAS NO 308076-94-0, is valued for its unparalleled thermal stability, chemical resistance, and inherent flame-retardant properties. It is an essential material for industries requiring components that maintain structural integrity and functionality under intense heat, corrosive conditions, and mechanical stress.

Application

• Thermal Protection Systems: Manufacture of firefighter turnout gear, military flight suits, and industrial protective clothing for foundries and welding.
• High-Temperature Filtration: Used in hot gas filtration bags for power plants, cement kilns, and metal processing to capture fine particulates in corrosive, high-temperature exhaust streams.
• Aerospace & Aviation: Critical for thermal insulation blankets, engine compartment components, and seals that must withstand extreme temperatures and fire.
• Industrial Sealing & Packing: Gaskets, braided packings, and seals for chemical processing, oil & gas, and automotive applications exposed to aggressive chemicals and heat.
• Composite Reinforcement: As a fiber reinforcement in advanced polymer matrix composites for aerospace and automotive structures requiring high strength-to-weight ratio and thermal performance.
• Electrical Insulation: Wire and cable insulation, motor slot liners, and other electrical components in high-temperature environments.

Basic Information

Product Name	Polybenzimidazole Fibers
CAS No.	308076-94-0
Molecular Formula	(C20H12N4)n
Molecular Weight	Polymeric Material
Synonyms	PBI Fiber; Poly[2,2'-(m-phenylen)-5,5'-bibenzimidazole] Fiber; Poly(2,2'-(1,3-phenylene)-5,5'-bibenzimidazole) Fiber; Celazole® Fiber (Trade Name); PBI Polymer Fiber; High-Performance Polybenzimidazole Fiber; Heat-Resistant Polybenzimidazole Fiber; Flame-Resistant PBI Fiber
EINECS	Contact for details

Quality Control

Our Polybenzimidazole Fibers are manufactured under stringent process controls to ensure batch-to-batch consistency and meet the demanding specifications of high-performance applications. Quality is verified through a comprehensive suite of tests including thermal gravimetric analysis (TGA), tensile strength, denier/filament count, and chemical resistance validation. A Certificate of Analysis (COA) detailing lot-specific results is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents and open flames. The material is hygroscopic (moisture-sensitive); ensure containers are sealed after each use to prevent moisture absorption.

Specification

Item	Specification
Appearance	Gold to Amber Colored Filaments
Fiber Denier	1.5 / 3.0 / Custom
Tenacity (cN/dtex)	≥ 3.0
Elongation at Break (%)	25 - 35
Limiting Oxygen Index (LOI) (%)	> 41
Continuous Use Temperature (°C)	Up to 350
Decomposition Temperature (°C)	> 500 (in air)
Moisture Regain (%)	~ 15
Chemical Resistance	Excellent to most acids, bases, solvents, and hydrocarbons

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.