Description

Polysulfone (PSU) is a high-performance, amorphous engineering thermoplastic known for its exceptional thermal stability, hydrolytic resistance, and excellent mechanical properties. This material is critical for applications demanding long-term reliability under harsh thermal and chemical conditions. It is essential for manufacturers in the medical, aerospace, automotive, and water treatment industries seeking durable, sterilizable, and dimensionally stable components.

Application

• Medical Devices & Equipment: Used for surgical instrument handles, housings for dialysis equipment, and sterilization trays due to its biocompatibility, transparency, and ability to withstand repeated steam, gamma, and EtO sterilization cycles.
• Water & Fluid Processing: Ideal for membrane supports, filter housings, and piping components in ultrafiltration and microfiltration systems because of its outstanding hydrolytic stability and resistance to a wide pH range.
• Aerospace & Automotive: Employed in electrical connectors, sensor housings, and under-the-hood components where high heat deflection temperature (up to ~180°C) and flame retardancy (UL 94 V-0 grades) are required.
• Food Service & Processing: Suitable for reusable food trays, coffee makers, and piping where repeated high-temperature washing and steam exposure are necessary.
• Electrical & Electronics: Used for circuit boards, capacitor films, and bobbins due to its good dielectric properties, dimensional stability, and resistance to soldering temperatures.

Basic Information

Product Name	Polysulfone
CAS No.	25154-01-2
Molecular Formula	(C27H22O4S)n
Molecular Weight	Contact for details
Synonyms	PSU; Polysulfone resin; Poly(oxy-1,4-phenylenesulfonyl-1,4-phenyleneoxy-1,4-phenyleneisopropylidene-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)
EINECS	246-652-9

Quality Control

Our Polysulfone is manufactured under a strict quality management system. Each batch is tested to ensure it meets critical parameters such as molecular weight, thermal properties (Tg, HDT), melt flow rate, and color. Certificates of Analysis (COA) detailing these specifications are provided with every shipment. We can supply grades compliant with relevant FDA, USP Class VI, and ISO 10993 standards 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). Keep away from strong oxidizing agents and open flames. Prior to processing, the resin should be dried according to the specific grade's technical data sheet to prevent hydrolysis and ensure optimal performance.

Specification

Item	Specification
Appearance	Amber to transparent pellets
Glass Transition Temperature (Tg)	~185 °C
Heat Deflection Temperature (HDT)	~174 °C @ 1.8 MPa
Tensile Strength	> 70 MPa
Melt Flow Rate (MFR)	Grade dependent (e.g., 6-25 g/10 min)
Density	1.24 g/cm³
Water Absorption (24h)	< 0.3 %
UL 94 Flammability Rating	V-0, V-1, HB (Grade dependent)

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