Properties

Veradel® PESU combines good chemical resistance with inherent flame resistance and a UL Relative Thermal Index of 190°C (374°F), making it a good fit for a variety of applications including electronic and automotive components. Its high thermal properties and transparency also make it suitable for foodservice applications.

Heat Resistance

Veradel® PESU is noted for its high heat deflection temperatures (HDT) and outstanding dimensional stability. Veradel® PESU remains transparent at service temperatures as high as  204°C (400°F). 

Mechanical Properties

Veradel® PESU demonstrates excellent toughness and does not break in standard unnotched impact tests. It is also known for its retention of properties at high temperatures. 

Chemical Resistance

Veradel® PESU has good chemical resistance to many materials, including the following:

• Aqueous systems
• Caustics
• Inorganic acids
• Aliphatic hydrocarbons
• Detergents and soaps
• Certain alcohols

Transparency and Color

Veradel® PESU, like all Sulfone polymers, offers transparent, opaque and glass-fiber reinforced grades in natural and colored resins. 

In their natural state, sulfone polymers are transparent materials, although they are not completely colorless. Veradel® PESU exhibits a light amber tint. 

Flame Retardance

Veradel® PESU is an inherently flame retardant polymer. The neat resins are rated V-0 at a specimen thickness of 1.6 mm (0.062 in.). The glass-reinforced grades are rated V-0 at a specimen thickness of 0.8 mm (0.031 in.).

Discover all Veradel® PESU grades

Processing

With a wide range of melt viscosities Veradel® PESU can be processed by injection molding, extrusion and blow molding. The shapes can be processed for prototype evaluations; films and plates can be thermoformed using conventional equipment. Furthermore, most post-fabrication operations such as ultrasonic welding, adhesive bonding, laser marking and heat staking, threading and machining can be performed with Veradel® PESU. Veradel® PESU can also be processed in solution to make coatings and membranes.