Dab tsi yog qhov muaj txiaj ntsig zoo txog kev coj dawb huv ntawm hydroxyprropyl cellulose?

Nyob rau hauv lub tsev rwb thaiv tsev cug thiab putty hmoov, qhov loj ntawm hydroxypropylulose kev tsim kho, yog li dab tsi yog qhov yog dab tsi yog qhov tseeb ntawm hydroxyprropylulose? Txhawm rau pab koj teb cov lus nug no.

Hauv cov txheej txheem ntau lawm ntawm hydroxyprropy, cov pa tawm hauv cov tshuaj tiv thaiv kab mob hydroxyprropylulose thiab txo qhov hnyav me. Txawm li cas los xij, cov ntawv tseem tshuav yog txwv, yog li nws tsis yog qhov nyuaj rau reattach lub kib molecules. Cov ntsiab lus tseem ceeb thiab hydroxypropropyl muaj kev sib raug zoo, qee qhov kev sib raug zoo tsuas yog xav kom txo cov ntsiab lus ntawm hydroxypropyl, yog li qhov zoo tsis tuaj yeem mus txog qib zoo xws li cov khoom lag luam txawv teb chaws.

Cov dej tswj hwm ntawm hydroxypropylulose thiab hydroxypropen kuj tau txiav txim siab txog dej tag nrho cov tshuaj tiv thaiv ntawm hydroxypropylulose. Cov nyhuv ntawm alkalization, qhov sib piv ntawm cov chloromreadethane mus rau cov roj alkali thiab piv rau cov dej paj rwb tag nrho cov khoom lag luam.

The quality of raw materials, alkalization effect, process ratio control, solvent ratio and neutralization effect, all determine the quality of hydroxypropyl methyl cellulose, some hydroxypropyl methyl cellulose made to dissolve after like milk is very cloudy, some milky white, some yellow, some clear and transparent. Yog tias koj xav daws nws, kho los ntawm cov ntsiab lus saum toj no. Qee lub sij hawm acetic acid tuaj yeem cuam tshuam rau kev hloov pauv, acetic acid yog qhov zoo tshaj plaws tom qab siv tau, xws li cov khoom siv noo noo, qhov tseeb, muaj qhov tseeb, muaj ntau yam cuam tshuam. Nrog rau kev ruaj khov ntawm cov khoom siv thiab kev ua haujlwm ntawm cov neeg kawm paub, cov khoom tsim tawm yuav tsum ruaj khov. Cov kev hloov pauv yuav tsum tsis pub dhau ± 2%, thiab cov pab pawg hloov chaw ntawm cov pab pawg hloov chaw yuav tsum tau tswj hwm kom zoo. Uniform hloov kev pab, hloov pauv yuav tsum yog qhov zoo.

Yog li ntawd, cov khoom lag luam zoo yog txiav txim siab los ntawm cov ntaub ntawv raw, cov cuab yeej ntau lawm, thiab lwm yam. Tsuas yog tswj nruj me ntsis los ntawm ib kawg mus rau qhov kawg tuaj yeem tsim cov khoom lag luam nrog cov khoom ruaj khov.