Polyetherimide PEI PEI Lead Screw

PEI processed parts are an amorphous thermoplastic polyetherimide. It is a combination of high performance and good processing characteristics, combining high-temperature resistance with high strength, modulus, and a wide range of chemical resistance.PEI is also known as polyazacyclopropane. A water-soluble polymer. Colorless or light yellow viscous liquid, hygroscopic, soluble in water, ethanol, insoluble in benzene.Polyetherimide (PEI) belongs to the non-crystalline plastics, has excellent mechanical properties, electrical insulation properties, irradiation resistance, high and low temperature resistance and abrasion resistance, and can be through the microwave, adding glass fiber, carbon fiber or other fillers can be achieved to enhance the modification of the purpose, but also with other engineering plastics composed of heat-resistant polymer alloys can be used at -160 ~ 180 ℃.

New use: Under certain conditions, polyethyleneimine solid material can absorb a large amount of carbon dioxide in humid air, and the separation process is also very convenient. Carbon dioxide can be sequestered in the polyethyleneimine solid material for a longer period of time, or it can be extracted for use in other fields. The material can be reused and maintains the same high absorption efficiency as before.

Because of its excellent overall balance of properties, PEI has been effectively used in industrial sectors such as electronics, electrical machinery and aerospace, and as a substitute for metal in traditional products and cultural and living goods. PEI is used to replace metal in the manufacture of fiber optic connectors, simplifying manufacturing and assembly steps and maintaining more accurate dimensions. It is used in automotive applications, such as in the manufacture of high-temperature connectors, high-power lamps and indicators, sensors that control the temperature of the outside of automotive compartments (air-conditioning temperature sensors), and sensors that control 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.

Key Features

1. High temperature resistance, HDT over 200℃, UL continuous application temperature over 170℃. High strength, rigidity, abrasion resistance and dimensional stability at high temperatures. 2.

2. excellent flame retardancy, without adding any additives have inherent flame retardancy and low smoke, oxygen index of 47%, combustion class UL94-V-0 grade.

3. Outstanding electrical properties, stable dielectric constant and dielectric loss over a wide range of frequencies and temperatures, and very high dielectric strength.

4. excellent chemical resistance and radiation resistance. PEI has a wide range of chemical resistance, including resistance to most hydrocarbons, alcohols and all halogenated solvents; also resistant to inorganic acids and short-term resistance to weak bases. PEI has a very good resistance to ultraviolet radiation, γ-ray performance, cobalt radiation in the 400 megorads under the processing, the tensile strength of 94% to maintain. 5. excellent mechanical strength, resistance, resistance to radiation, and the tensile strength of the material is very good, but also has a very good resistance to inorganic acids.

5. excellent mechanical strength, high and low temperature resistance and fatigue resistance and molding processability; add glass fibers, carbon fibers or other fillers can be enhanced to achieve the purpose of modification.

Application Areas

1. PEI, with its excellent overall balance of properties, is fruitfully used in industrial sectors such as the electrical and electronics and aerospace industries, and as a metal substitute for traditional products and articles of cultural life.

In the electrical and electronics industry, PEI is widely used for parts and components, including high-strength and dimensionally stable connectors, general and micro-relay housings, circuit boards, coils, flexible circuits, mirrors, and high-precision optical fiber components. Using it to replace metal in the manufacture of fiber optic connectors optimizes the structure of the component, simplifies its manufacturing and assembly steps, maintains more precise dimensions, and thus ensures that the cost of the final product is reduced by approximately 40%.

PEI impact-resistant sheet can be used to manufacture a variety of aircraft parts, such as portholes, nose components, seat backs, interior wall panels, door coverings and various objects for passengers.Composite materials made of PEI and carbon fiber have been used in the structure of various components of the latest helicopters.

2. Based on its excellent mechanical, thermal and chemical resistance properties, PEI is used in automotive applications such as high temperature connectors, high power lights and indicators, sensors for controlling the outside temperature of automotive compartments (air conditioning temperature sensors), and sensors for controlling the temperature of air and fuel mixtures (effective combustion temperature sensors). 3.

3. PEI can also be used as vacuum pump impellers resistant to high-temperature lubricant erosion, milled glass fittings (bearers) for vaporizers, and reflectors for non-illuminated anti-fog lamps.

4. PEI foam, used as heat insulation and sound Insulation Materials for airplanes and so on.

5, PEI hydrolysis resistance is excellent, can be used as medical and surgical instruments, trays, fixtures, prosthetics, medical lamp reflector and dental appliances.

6. In the food industry, it is used as product packaging and microwave oven trays.

7. PEI has both excellent high-temperature mechanical properties and abrasion resistance, can be used for the manufacture of water pipeline steering valve valve parts. Due to its high strength, flexibility and heat resistance, PEI is an excellent coating and film-forming material, which can form coatings and films suitable for the electronics industry, and can be used for the manufacture of microporous diaphragms with a pore size of < 0.1 μm, with high permeability. It can also be used as high temperature resistant adhesive and high strength fiber.