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PEI is chosen for demanding applications requiring a combination of strength, heat resistance, electrical insulation, and flame retardancy, especially where dimensional stability and repeated sterilisation are important.
PEI offers higher mechanical strength and stiffness than most other amorphous thermoplastics, such as polycarbonate (PC) or acrylonitrile butadiene styrene (ABS), retaining these properties even at temperatures where others are likely to soften and deform. PEI is second only to PEEK (a semi-crystalline high temperature plastic) in overall mechanical performance, but is more economical and easier to process than PEEK.
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Sustainability concerns
Non-renewable ingredients
Raw material generates polluting by-products
Low circularity potential
Microplastics
PEI is chosen for demanding applications requiring a combination of strength, heat resistance, electrical insulation, and flame retardancy, especially where dimensional stability and repeated sterilisation are important.
PEI offers higher mechanical strength and stiffness than most other amorphous thermoplastics, such as polycarbonate (PC) or acrylonitrile butadiene styrene (ABS), retaining these properties even at temperatures where others are likely to soften and deform. PEI is second only to PEEK (a semi-crystalline high temperature plastic) in overall mechanical performance, but is more economical and easier to process than PEEK.