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New PEEK-Based Thermoplastic Compound for Demanding Wear Applications

23 November 2009

Victrex Polymer Solutions has introduced Victrex WG101, a new tribological compound that is designed for use in challenging thermal and chemical environments within the automotive industry.

The new Victrex WG101 compound is said to offer significantly improved wear rates and reduced coefficient of friction when compared to the standard VICTREX PEEK 450FC30 product, which is used in the bulk of all Victrex PEEK polymer applications in friction and wear environments.

“We developed Victrex WG101 compound to provide a solution for customers whose wear performance requirements could not be met with the PTFE/graphite/carbon fibre composition of Victrex PEEK 450FC30,” explained James Simmonite, New Products Manager at Victrex. “Manufacturing costs and the ability to use standard thermoplastic processing technologies were other key considerations during development.”

In addition to improved wear rates and coefficient of friction, manufacturers say that the Victrex WG101 compound has a thirty percent increase in compressive strength when compared to standard Victrex PEEK 450FC30 and is PTFE-free.

“Excessive load, which is typically compressive load in wear applications, can also impact the durability of a product,” explained Simmonite. “It can lead to polymer creep resulting in dimensional changes. The increased compressive strength of the new compound, however, means that components can be designed for higher loads than the same components made with standard Victrex PEEK 450FC30 or other Victrex PEEK-based wear grades.”

According to Victrex, the Victrex WG101 compound is ideal for a wide range of applications ranging from full plastic wear bushings to composite bushings to vane tips in vacuum pumps and offers exceptional mechanical, tribological and thermal properties. Additional benefits include excellent melt flow, which allows thin walled intricate component design, and good weld line strength.

“This new tribological compound introduces improved performance, low density and standard injection moulding that extends the application range for Victrex PEEK polymer to applications formerly reserved to other products,” said Simmonite. “Additionally, Victrex WG101 compound is RoHS compliant and meets the Global Automotive Declarable Substance List (GADSL) requirements.”






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