VESTAKEEP PEEK

VESTAKEEP compounds are particularly characterized by the following material properties:

• high rigidity
• low water absorption and therefore high dimensional stability
• high hardness
• good strength
• very high heat resistance
• excellent sliding friction behavior, minimal abrasion
• good electrical characteristics
• excellent chemical resistance
• excellent hydrolytic stability
• good processability
• low tendency to form stress cracks?

Manufacture
VESTAKEEP is polycondensed from the building blocks hydrochinone and 4,4 Cdifluorobenzo-phenone in a multistage process.

The base polymer has a melt viscosity of 100C3,000 Pas, measured at 400 C, and a low shear of 1 sec-1, which is right for injection molding and extrusion applications. To meet the requirements of different applications, manufacturers can adjust the properties of pure PEEK selectively by adding various
additives:

• Processing aids facilitate demolding.
• Fillers and reinforcing materials increase rigidity and dimensional stability upon exposure to heat. Chopped carbon fibers are most effective for this. Minerals and glass microbeads also counteract the tendency to warp.

Applications
VESTAKEEP compounds can be used for a wide range of applications, such as in electrical, electronic, and communications engineering and in the automotive industry