Cov yam ntxwv ntawm kev daws polymerization
Lub viscosity ntawm lub polymerization system qis dua li ntawm polymerization ntau, kev sib xyaw thiab kub tawm yog qhov yooj yim, kev ua haujlwm ntau lawm thiab kub tau yooj yim los tswj, thiab cov evaporation ntawm cov kuab tshuaj tuaj yeem siv los tshem tawm polymerization thaum tshav kub kub. Nyob rau hauv qhov muaj qhov dawb radical polymerization, kev ua haujlwm tsis siv neeg lub zog tsis tuaj yeem tshwm sim thaum lub monomer concentration qis, yog li zam dhau lub polymerization tawg thiab ua kom yooj yim tsim cov polymerization reactor. Qhov tsis zoo yog tias rau radical polymerization, cov tawm los yog feem ntau tsawg, thiab cov degree ntawm polymerization yog me dua lwm txoj kev. Kev siv thiab rov qab los ntawm ntau tus nqi kim, txais taws, thiab cov kuab tshuaj lom tsis zoo tsuas yog nce nqi ntawm cov khoom tsim khoom thiab cov peev txheej, txo cov peev txheej tsim khoom, tab sis tseem ua rau ib puag ncig muaj kuab paug. Yog tias cov khoom siv polymer yuav tsum npaj, nws yog qhov tsim nyog los tsim cov cuab yeej sib cais thiab nce qib ntawm kev ntxuav, kev hnyav rov qab thiab kev huv. Yog li ntawd, hauv kev lag luam, kev daws teeb meem polymerization tsuas yog siv thaum nws nyuaj siv lwm cov txheej txheem polymerization lossis siv cov tshuaj polymer polymer ncaj qha.
qhov zoo:
Lub tshav kub polymerization tau yooj yim rau diffuse thiab polymerization cov tshuaj tiv thaiv kev kub yog qhov yooj yim los tswj; nws tuaj yeem ua tiav ncaj qha hauv kev daws; cov ntaub ntawv yooj yim rau thauj tom qab kev tawm tsam; qhov tsis tshua muaj cov tshuaj molecular yog yooj yim tshem tawm; tsis siv neeg lub nrawm nrawm tuaj yeem tshem tawm. Kev daws aqueous polymerization siv dej ua kuab, uas yog cov txiaj ntsig zoo rau kev tiv thaiv ib puag ncig.
Qhov tsis zoo:
Lub monomer yog diluted los ntawm cov kuab tshuaj, qhov polymerization tus nqi qeeb, thiab lub phaus molecular ntawm cov khoom yog tsawg; qhov hnyav tau noj, qhov hnyav tau rov qab siv dua, kev siv cuab yeej siv khoom siv tsawg tsawg, thiab tus nqi nce ntxiv; kev siv cov kuab tshuaj ua rau muaj kuab paug ib puag ncig