Infrared ziab tuaj yeem ua tau zoo heevtxhim kho qhov kev ua tau zoo ntawm ntxaib-ntsia hlau extruder vim nws txo qhov degradation ntawm IV tus nqi thiab txhim kho kev ruaj ntseg ntawm tag nrho cov txheej txheem.
Ua ntej, PET regrind yuav crystallized thiab qhuav hauv li 15-20 feeb hauv IRD.Cov txheej txheem crystallization thiab ziab ziab no yog ua tiav los ntawm cov txheej txheem cua sov ncaj qha siv hluav taws xob infrared kom ua tiav cov khoom kub ntawm 170 ° C.Piv nrog rau cov cua kub qeeb qeeb, ceev thiab ncaj qha lub zog tawm tswv yim pab txhawb kom muaj txiaj ntsig zoo tshaj plaws ntawm kev hloov pauv mus tas li ntawm cov khoom siv noo noo - infrared hluav taws xob tswj cov tshuab tuaj yeem teb rau cov txheej txheem hloov hauv vib nas this.Nyob rau hauv txoj kev no, tus nqi nyob rau hauv thaj tsam ntawm 5,000 txog 8,000 ppm nyob rau hauv lub IRD yog uniformly txo mus rau ib tug residual noo noo ntsiab lus ntawm txog 150-200 ppm.
Raws li cov txiaj ntsig thib ob ntawm cov txheej txheem crystallization hauv IRD, qhov ntom ntom ntawm cov khoom crushed nce, tshwj xeeb tshaj yog nyob rau hauv lub teeb yuag flakes.Hauv qhov xwm txheej no:IRD tuaj yeem nce qhov ceev ntawm 10% mus rau 20%, uas tej zaum yuav zoo li qhov sib txawv me me, tab sis tuaj yeem txhim kho qhov kev ua tau zoo ntawm cov extruder inlet - txawm hais tias lub extruder ceev tseem zoo li qub, nws tuaj yeem txhim kho cov ntsia hlau filling kev ua tau zoo.
Raws li lwm txoj hauv kev kub kub crystallization thiab ziab tshuab, IRD system kuj tseem tuaj yeem tsim los ua lub tshuab ziab khaub ncaws kom ua haujlwm tau zoo thiab ntawm qhov ziab kub hauv qab 120 ° C.Nyob rau hauv cov ntaub ntawv no, cov ntsiab lus noo noo ua tiav yuav raug txwv rau "tsuas yog" txog 2,300 ppm, tab sis nyob rau hauv txoj kev no nws tuaj yeem ruaj khov, tshwj xeeb tshaj yog nyob rau hauv qhov ntau ntawm cov txiaj ntsig tau teev tseg los ntawm cov chaw tsim khoom extruder.Lwm qhov tseem ceeb tshaj plaws yog kev zam kom tsis txhob muaj qhov hloov pauv siab thiab ruaj khov ntawm tus nqi, nrog rau cov ntsiab lus noo noo txo mus txog 0.6% uas yuav txo qis IV parameter hauv cov khoom siv yas molten.Lub sijhawm nyob hauv lub tshuab ziab khaub ncaws tuaj yeem txo qis rau 8.5 feeb thiab lub zog siv tsawg dua 80 W / kg / h
Post lub sij hawm: Feb-24-2022