Process Conditions For PEI Injection Molding

Solution to dryness: PEI has hygroscopic properties and can cause the dissolution of raw materials. The specified environmental humidity value should not exceed 0.02%. The proposed drying conditions are 150C and 4 hours of drying.
Melting temperature: 340~400C for general types of materials; Increase the variety of materials to 340-415C.
Grinding tool temperature: 107~175C, proposed grinding tool temperature is 140C.
Injection working pressure: 700-1500bar.
Injection rate: Apply the injection rate as strong as possible.
Chemical and physical properties PEI has extremely strong sustained high-temperature reliability, and even non reinforced PEI still has excellent toughness and compressive strength. Therefore, utilizing the excellent heat resistance of PEI can be used to manufacture continuous high-temperature and high-temperature resistant components. PEI also has good flame retardancy, chemical resistance, and insulation properties. The glass transition temperature is very high, reaching 215C.
PEI also has multiple mechanical equipment characteristics such as extremely low shrinkage and good performance. Typical application areas include the automotive industry (engine accessories such as temperature sensors, fuel and air Cpu, etc.), household appliances and electronic products (electrical equipment couplings, printed circuit boards, processing chip casings, explosion-proof boxes, etc.), packaging design, aircraft internal machinery and equipment, and the medical industry (surgical instruments, specialized tool casings, non implantable devices).