PI Polyimide Machining PI Parts

PI can be divided into thermosetting and thermoplastic, can be divided into poly(tetramethylene tetracarbimide) (PMMI), polyetherimide (PEI), polyamide monoimide (PAI), etc., have their own uses in different fields.

 

PMMI in 1.8 MPa load heat distortion temperature of 360 ℃, excellent electrical properties, can be used for special conditions of precision parts, high temperature self-lubricating bearings, seals, blower impellers, etc., can also be used in contact with liquid ammonia valve parts, jet engine fuel supply system parts.

 

PEI has excellent mechanical properties, electrical insulation properties, irradiation resistance, high temperature resistance and wear resistance, high melt flow rate, molding shrinkage rate of 0.5% to 0.7%, available for injection and extrusion molding, post-processing is easier, can also be used for welding method and other materials combined in the electronics and electrical appliances, aerospace, automotive, medical equipment and other industries are widely used.

 

The strength of PAI is the highest among the current non-reinforced plastics, the tensile strength is 190 MPa, the bending strength is 250 MPa, and the heat distortion temperature is as high as 274 ℃ under the load of 1.8 MPa. PAI has good resistance to ablative corrosion and electromagnetism at high temperatures and frequencies, and it has good adhesive properties to metals and other materials, and it is mainly used for the gears, bearings, and the separating claws of photocopying machines, etc., and it can be used for the ablative materials of aircrafts, transmittance materials, and other materials, and can be used in the production of electronic devices. It is mainly used for gears, bearings and separating claws of copiers, etc. It can also be used for ablative materials, permeable materials and structural materials of aircraft.