Kev ua kom zoo ntawm hydroxyethyl cellulose

Kev ua kom zoo ntxiv ntawmHydroxyethyl cellulose(HEC) cuam tshuam nrog cov khoom siv raw kom txhim kho nws txoj kev ua kom huv, sib txawv, thiab cov khoom rau cov ntawv thov tshwj xeeb. Ntawm no yog ib tug txheej txheem cej luam ntawm cov txheej txheem ua kom zoo rau HEC:

1. Raw Khoom Xaiv:

Daim ntawv kho kom zoo nkauj pib nrog xaiv cov khoom zoo cellulose raws li cov khoom siv raw. Cellulose tuaj yeem muab tau los ntawm ntau qhov chaw, xws li ntoo pulp, cov duab paj rwb, lossis lwm cov khoom cog ntoo.

2. Purification:

Cov khoom siv ntawm cellulose nyoos kom tshem tawm cov impurities xws li lignin, hemicellulose, thiab lwm yam uas tsis yog-cellulosic cheeb tsam. Qhov kev ua kom muaj zog no feem ntau yog cuam tshuam nrog kev ntxuav, tshuaj dawb, thiab kho cov tshuaj kom txhim kho cov cellulose.

3. Ethetification:

Tom qab huv huv, lub cellulose hloov kho los ntawm etherification los qhia cov kab mob hydroxyethyl mus rau cov cellulose los qhia cov cellulose, ua rau muaj cov cellulose cellulose (HEC). Kev tiv thaiv kab ntxwv ntawm feem ntau yog koom nrog kev siv Alkali hlau Hydroxides thiab ethylene oxide lossis ethylene chlorohydrin.

4. Neutralization thiab Ntxuav:

Tom qab etherification, cov tshuaj tiv thaiv sib xyaw yog neutralized kom tshem tawm ntau dhau alkali thiab kho cov pH. Cov khoom nruab nrab yog tom qab ntawd ntxuav kom tshem tawm cov tshuaj thiab cov khoom lag luam los ntawm cov tshuaj tiv thaiv.

5. Pom thiab ziab:

Cov tshuaj kho kom zoo nkauj yog lim kom tshem tawm cov khoom seem lossis tsis zoo. Tom qab kev lim dej, txoj kev daws teeb meem yuav muaj kev mob siab, yog tias tsim nyog, thiab tom qab ntawd qhuav kom tau txais cov hmoov kawg lossis granular daim ntawv ntawm Hec.

6. Tswjhwm Zoo:

Thoob plaws hauv txoj kev kho kom zoo nkauj, kev ntsuas kev ntsuas zoo tau ua los ua kom muaj kev sib luag, muaj kev coj dawb huv, thiab kev ua haujlwm ntawm Hec cov khoom lag luam. Kev ntsuam xyuas zoo yuav suav nrog ntsuas viscosity, kev soj ntsuam hnyav molecular phaus, kev txiav txim siab noo noo, thiab lwm yam kev ntsuas lub cev thiab tshuaj lom neeg.

7. Ntim thiab cia:

Thaum ua kom zoo, cov khoom lag luam HEC tau ntim rau hauv cov thawv ntim khoom tsim nyog lossis hnab ntim khoom rau kev cia thiab tsheb thauj mus los. Kev ntim khoom kom tiv thaiv cov Hec los ntawm kev sib kis, noo noo, thiab lwm yam chaw ib puag ncig uas tuaj yeem cuam tshuam nws qhov zoo.

Cov Ntawv Thov:

Refed Hydroxyethyl cellulose (HEC) pom ntau daim ntawv thov hla ntau yam kev lag luam, suav nrog:

• Kev tsim kho: siv raws li cov tuab yaj ntaub, rheology kho, thiab dej tuav cov khoom siv cov xim pleev xim, pleev xim, pleev xim, thiab cov nplaum.
• Kev tu tus kheej thiab cov tshuaj pleev ib ce: siv los ua cov thickener, stabilizer, thiab zaj duab xis yav tas los hauv cov tshuaj pleev xim, thiab lwm yam khoom siv saib xyuas.
• Kws muag tshuaj: siv los ua phau ntawv, tsis sib haum, thiab tswj hwm-tso tawm tus neeg sawv cev hauv cov ntsiav tshuaj, tsiav tshuaj, thiab ncua sijhawm.
• Khoom noj khoom haus: ua hauj lwm raws li cov tuab yaj ntaub, emulsifier, thiab stabilizer nyob rau hauv cov khoom noj khoom noj xws li cov kua ntsw, hnav khaub ncaws, thiab khoom noj siv mis.

Xaus:

Kev ua kom zoo nkauj ntawm hydroxyethyl cellulose (HEC) muaj ntau kauj ruam ntawm kev ua haujlwm xws li kev tsim kho, kev saib xyuas tus kheej, chaw muag tshuaj, thiab khoom noj. Cov txheej txheem ua kom zoo nkauj ua kom muaj kev sib xws, muaj kev coj dawb huv, thiab qhov zoo ntawm HEC khoom, ua rau nws siv ntau hom thiab cov khoom lag luam.