Ultem(PEI) part and machining

Polyetherimide, Polyetherimide abbreviated PEI, is an amber-colored transparent solid, without adding any additives on the inherent flame retardancy and low smoke, oxygen index of 47%, combustion class UL94-V-0, density of 1.28 ~ 1.42g/cm3. PEI has a strong high-temperature stability, even if it is a non-reinforced PEI, but still has a very good Even if it is non-reinforced PEI, it still has very good toughness and strength. Therefore, PEI's superior thermal stability can be used to produce high-temperature heat-resistant devices. PEI has excellent mechanical properties, electrical insulation properties, irradiation resistance, high and low temperature resistance and wear resistance, and can be through the microwave.PEI also has good flame retardancy, chemical resistance and electrical insulation properties. The glass transition temperature is very high, up to 215 ° C. PEI also has a very low shrinkage and good isotropic mechanical properties. Adding glass fibers, carbon fibers or other fillers can achieve the purpose of enhanced modification; can also be composed of other engineering plastics and heat-resistant polymer alloys, which can be used for a long time under the working temperature of -160~180℃.

 

PEI material suggestions:

 

PEI, Chinese name for polyetherimide, amber transparent solid, without adding any additives on the inherent flame retardancy and low smoke, oxygen index of 47%, combustion grade UL94-V-0 level, density of 1.28 ~ 1.42g/cm3, which has excellent mechanical properties, electrical insulation properties, irradiation resistance, high and low temperature resistance. Heat distortion temperature of 220 ℃, can be in -160 to 180 ℃ working temperature for long-term use, expensive.

 

PEI resin is a high-performance amorphous engineering thermoplastics.

 

PEI resin has inherent flame retardancy and low smoke generation characteristics. Some grades are rated UL 94V-0* at a thickness of 0.25mm. Other grades exhibit high dielectric constants and high dissipation factors over a wide range of temperatures and frequencies.

 

As an amorphous thermoplastic polyetherimide, PEI resin combines high performance with excellent processing characteristics, combining high heat resistance with high strength, modulus and broad chemical resistance.

 

Application Areas

 

Due to the excellent overall balance of performance, PEI is effectively used in the electronics, electrical machinery and aviation and other industrial sectors, and used as a substitute for metal in traditional products and cultural and living goods. Replacing metal with PEI in the manufacture of fiber optic connectors optimizes the structure of the component, simplifies its manufacturing and assembly steps, and maintains more precise dimensions. It is used in the automotive field, for example, in the manufacture of high-temperature connectors, high-powered lamps and indicators, sensors for controlling the temperature of the exterior of automotive compartments (air-conditioning temperature sensors), and sensors for controlling the temperature of air and fuel mixtures (effective combustion temperature sensors). They are also used as impellers for vacuum pumps resistant to high-temperature lubricating oils, ground glass fittings (bearers) for vaporizers operating at 180°C, and reflectors for non-illuminated anti-fog lamps.