Injection Molding
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PEI floating fiber problem after fiber reinforcement
Problem Phenomenon
Surface fiber exposure on glass fiber/carbon fiber reinforced PEI products
Cause Analysis
Insufficient interfacial impregnation between reinforcing fibers and the PEI matrix; high-speed injection pushes fibers to the product surface
Solution
Improve the treatment level of the coupling agent; reduce injection speed; increase mold temperature and melt temperature to improve impregnation
Key Takeaway
PEI reinforced systems also face fiber impregnation and appearance control problems
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