Description

Poly[N,N'-(1,3-Phenylene)Isophthalamide] is a high-performance aromatic polyamide polymer, also known as meta-aramid. This advanced engineering material is valued for its exceptional thermal stability, flame resistance, and mechanical integrity under extreme conditions. It is a critical raw material for manufacturers requiring durable, heat-resistant components and protective fabrics. Key industries relying on this polymer include aerospace, military, electrical insulation, and advanced filtration.

Application

• High-Temperature Protective Apparel: Used in the production of firefighter turnout gear, military flight suits, and industrial workwear for foundries and welding.
• Electrical Insulation: Serves as a base material for high-temperature insulating papers, slot liners, and transformer components due to its excellent dielectric properties.
• Aerospace & Automotive Components: Manufactured into gaskets, seals, and hoses that must withstand high under-the-hood temperatures and friction.
• Advanced Filtration Media: Used in hot gas filtration bags for power plants and cement kilns, and as a substrate for high-efficiency particulate air (HEPA) filters.
• Composite Reinforcement: Incorporated as fibers or pulp into rubber products (e.g., hoses, belts) and advanced composites to enhance thermal and mechanical performance.
• Specialty Papers & Felts: Produces high-strength, heat-resistant papers for electrical and thermal management applications.

Basic Information

Product Name	Poly[N,N'-(1,3-Phenylene)Isophthalamide]
CAS No.	25765-47-3
Molecular Formula	(C20H14N2O2)n
Molecular Weight	~ 314.34 (monomer)
Synonyms	Meta-Aramid; Poly(m-phenylene isophthalamide); PMIA; Nomex® (DuPont trade name); Teijinconex®; Apyeil®; Isophthaloyl Metaphenylene Diamine Polymer; 1,3-Benzenediamine polymer with 1,3-benzenedicarbonyl chloride
EINECS	Contact for details

Quality Control

Our Poly[N,N'-(1,3-Phenylene)Isophthalamide] is manufactured under strict process controls to ensure batch-to-batch consistency for demanding industrial applications. Quality is verified through a suite of tests including intrinsic viscosity, thermal gravimetric analysis (TGA), and differential scanning calorimetry (DSC) to confirm key performance parameters. Certificates of Analysis (COA) documenting purity, molecular weight distribution, and thermal properties are 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 acids, strong bases, and excessive moisture. For long-term storage, a nitrogen atmosphere is recommended to prevent potential oxidative degradation.

Specification

Item	Specification
Appearance	Off-white to pale yellow fiber or powder
Identification (IR)	Conforms to structure
Inherent Viscosity	1.5 - 2.5 dL/g (typical)
Glass Transition Temperature (Tg)	> 270 °C
Decomposition Temperature	> 400 °C
Moisture Content	< 5.0 %
Ash Content	< 0.5 %

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