The rapid growth of AI, high-performance computing (HPC), and advanced semiconductor technology is increasing the demand for high-performance engineering plastics in AI servers, semiconductor test equipment, and electronic devices.
PEI (Polyetherimide) is a high-performance engineering plastic with high heat resistance, good dimensional stability, electrical insulation, and flame resistance. By adding glass fiber, PEI + GF (Glass Fiber Reinforced Polyetherimide) provides higher strength, stiffness, and creep resistance, making it suitable for precision parts used in high-temperature and high-load environments.
What Is the Difference Between PEI and PEI + GF?
Both materials have the heat resistance and electrical properties of PEI. The main difference is that adding glass fiber improves the mechanical performance of the material.
PEI
Suitable for precision parts that require heat resistance, electrical insulation, and dimensional stability.
PEI + GF
Offers higher stiffness, strength, and creep resistance, making it suitable for precision parts under higher mechanical loads.
The right material depends on the product's operating temperature, mechanical load, dimensional requirements, and working environment.
Key Applications of PEI + GF
As AI and high-performance computing continue to grow, PEI and PEI + GF can be used in a wide range of high-performance equipment and precision parts.
Why Is PEI + GF Injection Molding Challenging?
The high performance of PEI + GF also makes it more demanding to process.
PEI requires a relatively high processing temperature and has high melt viscosity. Glass fibers can also affect material flow and shrinkage.
Therefore, mold temperature, melt temperature, gate design, injection speed, and cooling conditions can all affect the final part dimensions and warpage.
For precision parts, the direction of the glass fibers can also cause different shrinkage in different directions. This is why the material properties need to be considered during mold design.
Questions About PEI & PEI + GF
CFY's PEI & PEI + GF Precision Injection Molding
CFY Technology has experience in injection molding high-performance engineering plastics, providing an integrated process from mold design and mold manufacturing to high-temperature injection molding and dimensional inspection.
For materials such as PEI and PEI + GF, we consider the complete process, including part design, gate location, glass fiber flow direction, cooling, and injection conditions.
Our goal is to turn high-performance materials into stable, production-ready precision injection molded parts.
