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[Chemical Knowledge]：What is PEI plastic? Learn about applications and properties of PEI plastics

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PEI plastic, full name polyetherimide (Polyetherimide), is a high-performance plastic material. It has excellent heat resistance, chemical resistance, mechanical strength and insulation properties, so it is widely used in various industrial fields. Below we will introduce the application, characteristics and manufacturing process of PEI plastic in detail.

1. Application Fields

PEI plastics have been widely used in the following fields:

1. Electronic equipment and electrical appliances. Because PEI plastic has extremely high heat resistance and chemical resistance, it is widely used in the manufacture of high-temperature electronic components, insulating materials, packaging materials, etc.

2. Automotive industry. In the field of automobile manufacturing, PEI plastics are widely used in the manufacture of engine parts, intake system parts, seat materials, etc.

3. Medical device manufacturing. PEI plastic has excellent biocompatibility and is widely used in the field of medical device manufacturing.

4. Aerospace industry. PEI plastic has excellent mechanical properties and high temperature resistance, which is widely used in the field of aerospace. For example, PEI plastics can be used to make aircraft parts, rocket engine parts, etc.

2. characteristics

PEI plastic has the following outstanding characteristics:

1. Very high heat resistance. PEI plastic can withstand temperature changes of up to 200°C and will not melt even in extreme high temperatures.

2. Excellent mechanical strength. The mechanical strength of PEI plastic is comparable to that of high temperature resistant metals, so it is very suitable for those situations that need to withstand high strength, high pressure and high temperature.

3. Excellent flame retardant properties. The flame retardancy of PEI plastics is excellent, and it can maintain a stable flame retardant level even in harsh environments such as high temperature and high pressure.

4. Good chemical stability. PEI plastic has good chemical corrosion resistance and can maintain its stability in different chemical environments such as acid, alkali and organic matter.

5. Good insulation performance. PEI plastic has excellent insulation properties and can be used to manufacture various electronic components, insulating materials, etc.

3. manufacturing process

PEI plastic manufacturing process includes the following steps:

1. Material selection. PEI plastics require high quality raw materials in the manufacturing process, and most manufacturers choose to source them from places such as Japan or the United States. These raw materials have excellent properties and consistent quality.

2. Raw material processing. The raw materials of PEI plastic need to be processed and repacked.

3. Injection molding. PEI plastic is molded using injection molding technology, which can produce high-quality PEI products in large quantities.

4. Post-processing. PEI products require post-processing, including oven drying, polishing, etc.

This article introduces the application fields, characteristics and manufacturing processes of PEI plastics, so that readers have a deeper understanding of PEI plastics. With the continuous improvement of the level of industrialization, PEI plastics, as a new type of high-performance plastic material, will be more widely used in various fields.