Why Must PEEK Sheets Be Annealed? Revealing The "invisible Guardian" of High-performance Plastics!

In the field of high-end engineering plastics, PEEK (polyetheretherketone) is known as the "king of plastics" and is widely used in high-tech industries such as aerospace, medical implants, and semiconductors. However, did you know that unannealed PEEK sheets may hide huge performance risks?

Residual stress: the "invisible killer" of PEEK sheets

After PEEK is melted at high temperature and quickly cooled, residual stress will be generated inside the material due to uneven shrinkage. These stresses are like a "time bomb" and may cause:

1. Processing deformation - warping or cracking during cutting and drilling

2. Dimensional drift - reduced precision of parts after long-term use

3. Performance degradation - reduced fatigue resistance and chemical resistance

Annealing process: "stress relief" of PEEK sheet

Through precision temperature controlled annealing, we let PEEK sheet experience a "deep relaxation":

1. Heating to above the glass transition temperature (150-200°C) - polymer chains move freely to release internal stress

2. Ultra-slow cooling (1-2°C/minute)** - ensure uniform shrinkage of the material to avoid secondary stress

3. Customized crystallinity control - optimize strength, heat resistance or toughness according to customer needs

After annealing, the performance of PEEK sheet is fully upgraded!

Zero deformation - dimensional stability of precision parts increased by 50%+

Tougher - fatigue life is extended, suitable for dynamic load scenarios

Easier to process - higher surface finish during milling and turning

Application scenarios: Annealing = guarantee of high reliability

Medical implants: ensure long-term dimensional stability of bone screws and joint prostheses

Semiconductor equipment: zero deformation under high temperature vacuum environment

Automotive fuel system: seals resistant to high pressure and chemical corrosion

Choose professional annealing to unlock 100% potential of PEEK!

We have 10+ years of experience in ultra-high performance plastic annealing, and can provide your PEEK plates, rods, tubes and complex components:

1. Customized annealing solutions - optimized process for thick-walled parts and special-shaped parts

2. Precise control of crystallinity - meet different mechanical performance requirements

3. One-stop service - from raw materials to finished products, quality escort throughout the process