Lub purity ntawm hydroxypropyl methylcellulose nyob rau hauv lub tsev rwb thaiv tsev mortar thiab putty hmoov ncaj qha cuam tshuam rau qhov zoo ntawm engineering tsim, yog li dab tsi yog qhov cuam tshuam rau purity ntawm hydroxypropyl methylcellulose? Cia peb pab koj teb lo lus nug no hnub no.
Nyob rau hauv cov txheej txheem ntawm hydroxypropyl methylcellulose, cov residual oxygen nyob rau hauv lub reactor yuav ua rau lub degradation ntawm hydroxypropyl methylcellulose thiab txo qhov hnyav molecular, tab sis cov residual oxygen yog txwv, tsuav yog nws tsis yooj yim heev rau reconnect lub tawg molecules puas tsuaj. Qhov tseem ceeb tshaj plaws ntawm cov dej saturation muaj ntau ua nrog cov ntsiab lus ntawm hydroxypropyl. Qee lub chaw tsim khoom tsuas yog xav txo tus nqi thiab tus nqi, tab sis tsis xav kom cov ntsiab lus ntawm hydroxypropyl nce ntxiv, yog li qhov zoo tsis tuaj yeem ncav cuag qib ntawm cov khoom txawv teb chaws zoo sib xws.
Cov dej tuav tus nqi ntawm hydroxypropyl methylcellulose kuj muaj kev sib raug zoo nrog hydroxypropyl, thiab rau tag nrho cov txheej txheem tshuaj tiv thaiv, hydroxypropyl kuj txiav txim siab cov dej tuav tus nqi ntawm hydroxypropyl methylcellulose. Cov nyhuv ntawm alkalization, qhov sib piv ntawm methyl chloride thiab propylene oxide, qhov concentration ntawm alkali thiab qhov piv ntawm cov dej rau refined paj rwb tag nrho txiav txim siab qhov kev ua tau zoo ntawm cov khoom.
Qhov zoo ntawm cov ntaub ntawv raw, cov nyhuv ntawm alkalization, qhov piv ntawm cov txheej txheem, qhov sib piv ntawm cov kuab tshuaj thiab cov nyhuv ntawm neutralization tag nrho txiav txim siab qhov zoo ntawm hydroxypropyl methylcellulose, thiab qee qhov hydroxypropyl methylcellulose yog ua kom yaj tom qab, nws yog huab zoo li ntxiv. mis nyuj, ib txhia yog mis nyuj dawb, ib txhia yog daj, thiab ib txhia yog ntshiab thiab pob tshab. Yog tias koj xav daws nws, kho los ntawm cov ntsiab lus saum toj no. Qee zaum acetic acid tuaj yeem cuam tshuam rau lub teeb xa hluav taws xob. Nws yog qhov zoo tshaj plaws los siv acetic acid tom qab dilution. Qhov cuam tshuam loj tshaj plaws yog seb cov tshuaj tiv thaiv puas sib npaug thiab seb qhov kev sib piv ntawm qhov system puas ruaj khov (qee cov ntaub ntawv muaj cov dej noo thiab cov ntsiab lus tsis ruaj khov, xws li cov kuab tshuaj siv dua). Qhov tseeb, Muaj ntau yam tseem ceeb ntawm kev ua si. Nrog rau kev ruaj ntseg ntawm cov khoom siv thiab kev ua haujlwm ntawm cov neeg ua haujlwm tau zoo, cov khoom tsim tawm yuav tsum ruaj khov heev. Lub teeb xa hluav taws xob yuav tsis pub dhau qhov ntau ntawm ± 2%, thiab qhov hloov pauv sib txawv ntawm cov pab pawg hloov pauv yuav tsum tau tswj kom zoo. Es tsis txhob uniformity, lub teeb transmittance yeej yuav zoo.
Yog li ntawd, cov khoom lag luam zoo yog txiav txim siab los ntawm ntau yam xws li cov khoom siv raw, cov cuab yeej siv ntau lawm, thiab lwm yam. Tsuas yog los ntawm kev tswj hwm nruj txij thaum pib mus txog thaum kawg tuaj yeem tsim cov khoom zoo.
Lub sij hawm xa tuaj: Plaub Hlis-10-2023