Description

Polysulfone (PSU) is a high-performance, amorphous thermoplastic polymer known for its exceptional thermal stability, hydrolytic resistance, and excellent mechanical properties. This engineering plastic is valued for its ability to maintain structural integrity and performance under demanding conditions, including exposure to steam and harsh chemicals. It is a critical material for manufacturers in the medical, aerospace, food & beverage, and water treatment industries seeking durable, transparent, and sterilizable components.

Application

• Medical Devices & Equipment: Used for housings, connectors, and fluid handling components in dialysis machines, surgical instruments, and sterilization trays due to its biocompatibility, transparency, and ability to withstand repeated steam autoclaving (up to 134°C).
• Water & Fluid Filtration: A primary material for hollow fiber and ultrafiltration membranes in water purification, wastewater treatment, and biopharmaceutical processing, leveraging its chemical resistance and membrane-forming capabilities.
• Food Service & Processing: Employed in reusable food service trays, piping, and equipment components that require repeated cleaning with hot water, steam, or aggressive detergents.
• Aerospace & Automotive: Utilized in interior components, electrical connectors, and under-the-hood applications where a combination of high heat deflection temperature, flame retardancy, and dimensional stability is essential.
• Electrical & Electronics: Serves as an insulator in circuit boards, connectors, and capacitor films due to its high dielectric strength, thermal endurance, and UL 94 V-0 flame rating.
• Industrial Components: Fabricated into sight glasses, pump housings, and valve components for chemical processing equipment, offering clarity and resistance to a wide range of acids, bases, and hydrocarbons.

Basic Information

Product Name	Polysulfone
CAS No.	25135-51-7
Molecular Formula	(C27H22O4S)n
Molecular Weight	Contact for details
Synonyms	PSU; Polysulfone resin; Poly(oxy-1,4-phenylenesulfonyl-1,4-phenyleneoxy-1,4-phenylene(1-methylethylidene)-1,4-phenylene); Udel Polysulfone; 1,1'-Sulfonylbis[4-chlorobenzene] polymer with 4,4'-(1-methylethylidene)bis[phenol]; Poly(1,4-phenylenesulfonyl-1,4-phenyleneoxy-1,4-phenyleneisopropylidene-1,4-phenylene); Thermoplastic polysulfone
EINECS	Contact for details

Quality Control

Our Polysulfone is manufactured under a stringent quality management system. Each batch is tested to ensure consistency in key parameters such as molecular weight, melt flow index, thermal properties, and color. We provide full traceability and Certificates of Analysis (COA) are available upon request to verify compliance with your specific requirements, including potential standards like USP Class VI for medical applications.

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). Although polysulfone has low hygroscopicity, prolonged exposure to high humidity should be avoided to prevent any potential moisture absorption prior to high-temperature processing.

Specification

Item	Specification
Appearance	Pale amber to transparent pellets
Identification (IR)	Conforms
Glass Transition Temperature (Tg)	~185 °C
Heat Deflection Temperature (HDT)	> 174 °C @ 1.82 MPa
Melt Flow Rate (MFR)	Grade dependent (e.g., 6-25 g/10 min)
Tensile Strength	> 70 MPa
Density	1.24 g/cm³
UL94 Flammability Rating	V-0 (typical)

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