Cooling cylinders at 170☌ lead to opaque and highly crystalline material.

For film and sheet extrusion, cooling cylinders at 50☌ lead to transparent amorphous material.

Cooling temperature have a strong influence on crystallinity and then on performances.

PEEK is suitable for injection of very small parts with tight dimensional tolerances.

Post crystallization at 200☌ is possible but it is not recommended for applications requiring high dimensional stability.

A mold temperature of 160-190☌ is recommended to obtain good crystallization and minimize warping.

These processes with their processing guidelines are described below: Polyetheretherketone can be processed by injection molding and extrusion. This is done to avoid any molding defects. And, its blends with PES and PPS are highly compatible.īefore processing Polyetheretherketone, drying is recommended for 3 hours at 150☌ or 2 hours at 180☌.

However, it forms miscible blends with a range of other polyketones and PEI. PEEK is not normally blended with other polymers. PEEK has much higher temperature performance, wear resistance, chemicals resistance and fatigue performance as compared to PES.As compared to PPS, PEEK has markedly superior thermal resistance, toughness and flashing.

In comparison to fluoropolymers, PEEK show superior tensile strength, HDT, operating temperature, bonding, processing and toxic gas emission but they are inferior in terms of chemical resistance, cost, toughness and UV weathering.Thermal Insulation (Thermal Conductivity) (W/m.K) Toughness (Notched Izod Impact at Room Temperature) (J/m) Below table lists the properties of unfilled, 30% glass fiber-reinforced, 30% carbon fiber-reinforced PEEK grades:

Material peek