Hydroxyethyl cellulose (HEC) yog xim daj lossis lub teeb daj, tsw ntxhiab, tsis muaj tshuaj lom lossis hmoov tsis zoo. Nws yog ua los ntawm cov paj rwb nyoos los yog ua kom zoo rau hauv 30% ua kua caustic dej qab zib. Tom qab ib nrab ib teev, nws tau tawm thiab nias. Nyem kom txog thaum qhov sib piv ntawm cov dej alkaline nce mus txog 1: 2.8, tom qab ntawd crush. Nws tau npaj los ntawm kev tiv thaiv kab ntsig thiab cov yog tias tsis yog ionic cellulose kev hais ua. Hydroxyethyl cellulose yog qhov tuab tuab tuab nyob rau hauv looj xim. Cia peb ua kom pom tseeb yuav ua li cas siv hydroxyethyl cellulose HEC hauv looj cov xim thiab cov kev ceev faj.
1. Nruab nrog niam cawv rau kev siv niam hydroxyethyl cellulose cellulose hec los npaj ib tus niam haus cawv nrog kev xav tau ntau dua, thiab tom qab ntawd ntxiv rau cov khoom. Qhov zoo dua ntawm hom no yog tias nws muaj peev xwm ntxiv tau ncaj qha ntxiv rau cov khoom tiav, tab sis nws yuav tsum khaws cia kom zoo. Cov kauj ruam ntawm hom no zoo ib yam li feem ntau ntawm cov theem hauv txoj kev 2; Qhov sib txawv yog tias tsis tas yuav muaj lub siab-shear agitator, thiab tsuas yog qee tus neeg tsis taus los khaws cov tshuaj hydroxyethyl qhia kom txog thaum yaj tag. Txawm li cas los xij, nws yuav tsum raug sau tseg tias cov funergicide yuav tsum tau ntxiv rau niam cawv niam hmo kom sai li sai tau.
2. Ntxiv ncaj qha thaum lub sij hawm ntau lawm: Cov qauv no yog qhov yooj yim thiab yuav siv sijhawm luv tshaj plaws. Ntxiv cov dej huv rau ib lub thoob loj nruab nrog lub siab shear tov. Pib txhib tsis tu ncua ntawm kev nrawm nrawm thiab maj mam sieve lub hydroxyethyl cellulose rau hauv kev daws qhov uayees. Txuas ntxiv mus rau kom txog thaum txhua qhov me me tau tsau. Tom qab ntawd ntxiv cov tshuaj tiv thaiv thiab ntau yam ntxiv. Xws li pigments, dispersing AIDS, thiab lwm yam kom txog thaum tag nrho cov kev daws teeb meem hauv cov tshuaj hauv cov mis rau cov tshuaj tiv thaiv.
Txij li thaum lub ntsej muag zoo hydroxyethyl cellulose hec yog powdery lossis fibrous khoom, thaum npaj hydroxyethyl cellulose niam cawv, them sai sai rau cov ntsiab lus hauv qab no:
(1) Thaum siv holloposity hydrotyl cellulose cellulose hec, kev pom ntawm niam cov kua txiv yuav tsum tsis txhob muaj dua 2.5-3% (los ntawm qhov hnyav), tsis li ntawm tus niam cawv yuav nyuaj rau lis.
(2) Ua ntej thiab tom qab ntxiv hydroxyethyl cellulose cellulose kom txog thaum cov kev daws teeb meem tau meej thiab meej.
(3) Ntau li ntau tau, ntxiv cov antifungal tus neeg sawv cev ua ntej.
(4) Dej kub thiab cov nqi ntawm cov dej muaj qhov tseeb ntawm kev sib raug zoo ntawm hydroxyethyl cellulose, yog li tshwj xeeb saib yuav tsum tau them nyiaj.
(5) Tsis ntxiv qee cov tshuaj alkaline rau cov sib tov ua ntej cov hmoov hydroxyethyl hmoov yog tsau nrog dej. Kev nce qib tom qab soaking yuav pab yaj.
(6) Nws yuav tsum maj mam sifted rau hauv lub tank sib xyaw, thiab tsis ntxiv cov pob zeb hydroxyethyl cellulose uas tau tsim cov lumrulose uas tau tsim cov lumps thiab cov pob rau hauv lub tank sib xyaw.
Qhov tseem ceeb cuam tshuam rau cov viscosity ntawm looj xim:
(1) corrosion ntawm thickener los ntawm cov kab mob me.
(2) Hauv kev ua cov xim pleev xim, seb cov kauj ruam ua ntu zus ntawm kev ntxiv cov tuab ntxiv.
(3) Seb tus nqi ntawm cov activator sab npoo thiab dej siv hauv cov xim pleev xim yog qhov tsim nyog.
(4) Qhov sib piv ntawm tus nqi ntawm lwm cov natural haloters rau tus nqi ntawm hydroxyethyl cellulose hauv cov xim tsim.
(5) Thaum Latex yog tsim, cov ntsiab lus ntawm cov khoom seem thiab lwm cov neeg oxes.
(6) Qhov kub thiab txias yog qhov siab dhau heev thaum muaj kev cuam tshuam vim muaj ntau dhau.
(7) Cov pa npuas ntau nyob hauv cov xim, cov viscosity ntau dua.
Lub viscrotyl ntawm hydulose cellulose hec hloov me ntsis nyob rau hauv lub Ph Thaj Tsam ntawm 2-12, tab sis cov viscosity txo dhau qhov no. Nws muaj cov khoom ntawm thickening, kev ncua, khi, emulsifying, dispersing, tswj kev noo thiab tiv thaiv kev sib deev. Cov kev daws teeb meem hauv kev sib txawv viscosity li cas tuaj yeem npaj tau. Tsis ruaj khov nyob rau hauv qhov kub thiab txias thiab lub siab, sov, thiab nws muaj ntsev zoo, thiab nws muaj ntsev ntau zoo rau cov ntsev siab thiab tseem nyob ruaj khov.
Lub Sijhawm Post: Apr-01-2023