Injection Molding
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Carbon fiber reinforced PEEK narrower processing window
Problem Phenomenon
The injection conditions of CF/PEEK composite materials are more demanding than those of pure PEEK
Cause Analysis
The extremely high thermal conductivity of carbon fiber makes the melt cool faster in the cavity; CF greatly increases the apparent viscosity of the melt; CF wears the screw and mold more severely
Solution
On the basis of pure PEEK, further increase the mold temperature (about 10°C) to compensate for carbon fiber heat conduction; select screws and mold steels with higher wear resistance grades; enlarge gate and runner dimensions
Key Takeaway
CF reinforcement expands the performance of PEEK but also greatly increases processing difficulty
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