PEI — Polyetherimide

Polyetherimide (PEI) is an amorphous, amber-to-transparent thermoplastic with characteristics similar to the related plastic PEEK. When comparing PEI to PEEK, the former is cheaper but has lower impact strength and a tighter temperature range. Due to its adhesive properties and chemical stability it became a popular bed material for FFF 3D printers. Polyetherimide is able to resist high temperatures while maintaining stable electrical properties over a wide range of frequencies. This high strength material offers excellent chemical resistance and ductile properties suitable for various applications, even those involving steam exposure.

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Structure

Application

Automotive: Electrical and lighting systems, transmission components, throttle bodies, and thermostat housings

Electronics industry: coils and fuses, high-end connectors in the fiber optics segment. PEI resin offers great flow for thin wall design, electrical switches and controls, motor parts.

Aerospace industry: components for antenna constructions, jet engine parts and interior components

Medical: membranes for biohybrid applications, permeance, blood and tissue, surgical instrument handles and enclosures, non-implant prostheses.

Appliances: institutional kitchenware applications, household and domestic appliances, microwave cookware, steam and curling irons, dual-ovenable trays for food packaging.

Chemical industry: laboratory equipment

Selected Grades

I	Units	Test Methord	VAT002	VAT002HF
Density	g/ cm3	GB/T 1033.3	1.27±0.02	1.27±0.02
Tensile Strength	MPa	GB/T 1040	≥100	≥100
Tensile Modulus	Mpa	GB/T 1040	≥3000	≥3000
Flexural Strength	Mpa	GB/T 9341	≥125	≥125
Flexural Modulus	Mpa	GB/T 9341	≥2800	≥2800
Notched Impact Strength	KJ/m2	GB/T 1843	≥5.0	≥5.0
Glass Transition (Tg)	℃	GB/T 19466	≥215.0	≥215.0
Melt Flow Rate	g/10min	ASTM D1238（340℃，5kg）	6-10	10-15