PA cov txheej txheem cov yam ntxwv (1)

PA yog yooj yim kom nqus dej noo, nws yuav tsum tau kom qhuav ua ntej kev ua, thiab cov ntsiab lus dej yuav tsum tswj kom qis dua 0. 3%. Cov ntaub ntawv nyoos tau qhuav zoo, cov khoom lag luam muaj lub siab gloss, txwv tsis pub nws yog qhov ntxhib, PA yuav tsis maj mam muag nrog qhov nce ntawm cua sov, tab sis yuav muag nyob rau hauv qhov nqaim kub ntau nyob ze rau qhov chaw melting, melting point yog pom tseeb , thaum qhov kub tau mus txog Txaus tshwm sim (tsis zoo li PS, PE, PP, thiab lwm yam).

PA' s viscosity muaj qis dua lwm yam thermoplastics, thiab nws cov khoom ua kom txias kub yog nqaim (tsuas yog txog 5 ℃)). PA muaj fluidity zoo, nws yooj yim sau thiab pwm, thiab nws kuj yog ib qho yooj yim taug kev deb.

PA muaj lub siab yaj thiab lub siab solidification point. Cov yaj yuav ua tiav txhua lub sijhawm hauv pwm vim qhov kub ntog qis dua hauv qab kis, tiv thaiv kev ua tiav ntawm cov hmoov av puv. Yog li ntawd, kev txhaj tshuaj nrawm yuav tsum tau siv (tshwj xeeb tshaj yog rau cov nyias-phab ntsa lossis cov txheej txheem ua ntu ntev). Nylon moulds yuav tsum muaj qhov ntsuas kom muaj pa kom txaus.

PA nyob rau hauv lub xeev molten muaj thermal stability tsis zoo thiab yog yooj yim degraded. Qhov kub ntawm lub thoob yuav tsum tsis pub tshaj 300℃, thiab lub sijhawm tso cua sov ntawm lub yaj hauv lub tawb yuav tsum tsis pub tshaj 30 feeb. PA xav tau lub siab kub pwm. Cov pwm kub tuaj yeem siv los tswj nws lub hnub ci kom tau txais qhov xav tau.

PA khoom pwm kub yog qhov zoo dua 50-90℃, PA 1010 kev ntsuas kub yog qhov zoo dua 220-240℃, PA 66 kev ntsuas kub yog 270-290℃Cov. PA cov khoom lag luam qee zaum xav tau" annealed" lossis" humidified" raws li kev ua tau zoo.