Polyimide (PI) yog ib qho kev ua tau zoo ntawm - cov khoom siv organic polymer uas tuav txoj haujlwm tseem ceeb hauv kev lag luam vim nws zoo heev - qhov kub thiab txias tsis kam, txhua yam khoom, tshuaj lom neeg ruaj khov, thiab hluav taws xob rwb thaiv tsev.
Nws cov qauv molecular muaj imide pawg (-CO-N-CO-), thiab cov tshuaj lom neeg tshwj xeeb no ua rau cov khoom muaj kev ruaj ntseg nyob rau hauv ib puag ncig huab, ua rau nws yog ib qho ntawm cov khoom tseem ceeb hauv high-kawg kev lag luam xws li aerospace, electronics, thiab automotive.
Kev ua haujlwm ntawm PAI yuav tsum tswj hwm qhov kub thiab av noo. Thaum txhaj tshuaj molding, lub chim kub yuav tsum tau teem rau ntawm 320{10}}380 degree, thiab pwm kub ntawm 150-200℃kom tsis txhob degradation ntawm cov khoom. Lub melt flow index (MFR) feem ntau yog tswj ntawm 5-30 g / 10 min (265℃/ 5 kg) los xyuas kom meej qhov sib npaug ntawm flowability thiab mechanical zog. Raws li cov qauv kev lag luam, thoob ntiaj teb, ASTM D4066 (Specification for Polyamide-Imide Resins) thiab IEC 60664-1 (Kev Ua Tau Zoo ntawm Cov Khoom Siv Hluav Taws Xob) tau ua raws, thaum nyob hauv tsev, GB / T 23641 (Cov Txheej Txheem Kev Xeem Txuj Ci rau Engineering Plastics) tau hais txog.
