PPA yog ib qho nylon thermoplastic haumxeeb nrog ob qho tib si cov txheej txheem semi-crystalline thiab amorphous. PPA yog tau los ntawm polycondensation ntawm phthalic acid nrog o-phenylenediamine. Nws muaj cov thermal, hluav taws xob thiab lub zog zoo heev. Cov khoom sib xyaw hauv cov tshuaj ua hauj lwm, thiab lwm yam zoo li, cov khoom siv zoo xws li kev ywj pheej, kev siab, qhov siab thiab qhov kub tsis txias hauv 200 ° C nruam kev kub, qhov av, cov roj thiab cov tshuaj muaj zog. Warpage thiab ruaj khov, nkees tsis kam, ua tsis taus pa. Daim ntawv thov tseem ceeb yog cov amorphous PPA. Nws muaj kev nplua zoo heev thiab siab zog ntawm kev kub. PPA muaj kev kub nyhiab thiab kev ua tau zoo heev xws li khoov, tensile thiab qhov cuam tshuam ntawm kev kub, thiab tuaj yeem tiv taus ntev lub sij hawm tensile creep. Nws rigidity thiab muaj zog tshaj li PPS thiab PEEK ntawm kev kub siab ntawm 120 ° C. Kev tsim tshwj xeeb rau kev hloov cov plhaub taum plawv mus txo nqi. PPA muaj ntau dua thermal stability dua PA46, zoo dua CTI tiv thaiv kab mob thiab cov muaj peev xwm infrared reflow. PPA muaj kev tiv thaiv zoo rau ntau hom roj xws li roj av, diesel, cav roj, cov roj hluav taws roj thiab cov roj txua hluav taws xob, txawm li ntawm 150 ° C. PPA yog tsim rau kev siv sab nraud rau sab nraud yam tsis tas ua rau qis hauv cov khoom hauv lub cev txawm tias tsis tshua muaj huab cua kub nyhav xws li ultraviolet radiation, high humidity, thiab high temperature. Kev ntsuam xyuas huab cua tau qhia tau hais tias lub zog tensile thiab lub zog ntawm 30% thiab 50% iav fiber reinforced polyphthalamide tuaj yeem khaws cia 60% thiab 80%, feem ntau, thiab aroma ntawm PPA siab. Lub nplhaib txheej txheem tso cai rau nws yuav tsum muaj peev xwm ntau dua rau tshuaj ntau txawm tias thaum muaj kev kub ntxhov. PPA rau ntawm turpentine, methane, methanol, dej, seawater, dilute acid thiab lwm yam roj thiab cov roj, roj, organic tshuaj, antimony tshuaj, nres cov kua dej, cov tshuaj calcium chloride, ethylene glycol, zinc chloride, cov kua roj carbonated, cov tshuaj Hydrocarbons, esters, ketones thiab feem ntau aqueous ntsiab tso tawm zoo kuj. Tab sis nws muaj peev xwm tsis tau ua qhov kev txiav txim ntawm muaj zog acid thiab muaj zog oxidant, soluble nyob rau hauv phenol thiab cresol.
