Nrog rau txoj kev loj hlob ntawm cov cuab yeej tshiab, kev tsim cov nylon 6 tau nce mus rau hauv cov qib ntawm cov txheej txheem loj-tsim tshiab.Raws li kev siv sib txawv, cov txheej txheem polymerization ntawm nylon 6 tuaj yeem muab faib ua cov hauv qab no.
1. Ob-theem polymerization txoj kev
Txoj kev no yog tsim los ntawm ob txoj kev polymerization, uas yog pre-polymerization thiab post-polymerization txoj kev, uas feem ntau yog siv nyob rau hauv zus tau tej cov cord fabrics nrog siab viscosity.Ob txoj kev polymerization tau muab faib ua pre-polymerization pressurization thiab post-polymerization decompression.Nyob rau hauv cov txheej txheem ntau lawm, pressurization los yog decompression kho yog nqa tawm raws li kev sib piv ntawm lub sij hawm polymerization, tus neeg nyob rau hauv cov khoom thiab tsawg-poly ntim.Feem ntau, cov txheej txheem tom qab-polymerization decompression yog qhov zoo dua, tab sis nws yuav tsum tau nqis peev ntau dua, thiab tus nqi siab dua, ua raws li kev kub siab thiab ib txwm ua haujlwm ntawm tus nqi.Txawm li cas los xij, tus nqi ua haujlwm ntawm txoj kev no yog qis dua.Nyob rau hauv lub pre-polymerization pressurization thiab post-polymerization decompression ntau lawm txoj kev, thaum lub sij hawm lub pressurization theem, cov khoom xyaw ntawm ntau lawm yog tov thiab ces tag nrho cov muab tso rau hauv lub reactor, thiab ces cov dej-locking nplhaib cov tshuaj tiv thaiv thiab ib feem ntawm polymerization cov tshuaj tiv thaiv yog nqa tawm. ntawm qhov kub thiab txias.Cov txheej txheem yog ib qho tshuaj tiv thaiv endothermic.Lub tshav kub yog nyob rau sab sauv ntawm lub raj polymer.Thaum lub sij hawm cov txheej txheem pressurization, lub polymer nyob twj ywm nyob rau hauv lub polymer raj rau ib lub sij hawm ntawm lub sij hawm thiab ces nkag mus rau hauv lub polymerizer, qhov twg cov viscosity ntawm lub polymer tsim yuav ncav cuag li 1.7.
2. Nruam txoj kev polymerization ntawm lub siab ib txwm
Txoj kev no yog siv rau kev tsim cov nylon ribbon 6. Cov Nta: Loj nruam polymerization yog saws nrog kub txog li 260 ℃ thiab lub sij hawm polymerization rau 20 teev.Qhov seem oligomer nyob rau hauv seem tau txais thaum cov dej kub tawm tsam tam sim no.DCS faib qhov system tswj thiab ammonia roj cua kom qhuav kuj tau txais.Cov txheej txheem ntawm monomer rov qab siv cov thev naus laus zis ntawm kev txuas ntxiv peb-txheej evaporation thiab concentration thiab discontinuous distillation thiab concentration ntawm cov dej rho tawm.Qhov zoo ntawm txoj kev: Kev ua tau zoo tsis tu ncua ntawm kev tsim khoom, cov khoom tsim tawm, cov khoom lag luam zoo, thaj chaw me me nyob hauv cov txheej txheem ntau lawm.Cov txheej txheem yog ib tug kuj raug technology nyob rau hauv zus tau tej cov tam sim no domestic ribbon.
3. Intermittent hom autoclave polymerization txoj kev
Nws yog dav siv nyob rau hauv zus tau tej cov me-batch engineering yas.Qhov ntau lawm nplai yog 10 mus rau 12t / d;Cov zis ntawm ib qho autoclave yog 2t / batch.Feem ntau, lub siab nyob rau hauv cov txheej txheem ntau lawm yog 0.7 txog 0.8mpa, thiab viscosity tuaj yeem ncav cuag 4.0, thiab 3.8 ntawm lub sijhawm ib txwm muaj.Tias yog vim li cas yog tias viscosity siab dhau lawm, cov zis yuav qis dua.Nws tuaj yeem siv los ua pa 6 lossis pa 66. Cov txheej txheem muaj cov txheej txheem tsim khoom yooj yim, uas yooj yim hloov ntau yam thiab hloov tau yooj yim rau kev tsim khoom.
Post lub sij hawm: Feb-21-2022