Tus cwj pwm:Hydroxyethyl Cellulose (HEC CAS: 9004-62-0) yog ib hom hmoov dawb los yog daj uas tsis muaj ntxhiab, tsis muaj ntxhiab, thiab yooj yim ntws. Yaj tau hauv dej txias thiab dej kub, tab sis feem ntau tsis yaj hauv feem ntau cov kuab tshuaj organic. Tus nqi pH hloov me ntsis ntawm 2-12, tab sis qhov viscosity txo qis dhau qhov ntau no.
Tus nqi：Hydroxyethyl Cellulose (HEC CAS: 9004-62-0) yog ib yam khoom siv uas siv ntau rau cov kua cellulose ether uas yog cov organic dej-based inks. Nws yog ib yam khoom uas yaj tau hauv dej uas tsis yog ionic uas muaj peev xwm ua kom tuab zoo rau dej, tuaj yeem lwj los ntawm oxygen, acids, thiab enzymes, thiab tuaj yeem sib txuas los ntawm Cu2+ hauv qab alkaline. Nws ruaj khov thaum tshav kub, tsis zoo li gel thaum cua sov, tsis precipitate hauv qab acidic, thiab muaj cov khoom zoo rau kev tsim zaj duab xis. Nws cov kua dej tuaj yeem ua rau cov zaj duab xis pob tshab, uas tuaj yeem tsim los ntawm kev ua ntawm alkaline cellulose thiab ethylene oxide, thiab muaj cov khoom ntawm kev ua kom tuab, emulsification, adhesion, suspension, film-forming, moisture retention, thiab colloid protection. Lub luag haujlwm ntawm cov thickeners hauv cov kua dej-based yog kom lawv tuab. Kev ntxiv cov thickeners rau hauv cov kua ua rau nws cov viscosity ntau dua, uas tuaj yeem txhim kho lub cev thiab tshuaj lom neeg ntawm cov kua; Vim yog qhov nce ntxiv ntawm viscosity, rheology ntawm cov kua tuaj yeem tswj tau thaum luam ntawv; Cov xim thiab cov khoom sau hauv cov kua mem tsis yooj yim rau precipitate, ua rau kom muaj kev ruaj khov ntawm cov kua mem dej.
Txoj Kev Tsim Khoom： Alkali cellulose yog ib qho polymer ntuj uas muaj peb pawg hydroxyl ntawm txhua lub nplhaib fiber. Pawg hydroxyl nquag tshaj plaws ua rau hydroxyethyl cellulose. Muab cov paj rwb nyoos lossis cov pulp refined ntub rau hauv 30% kua alkali, thiab coj nws tawm mus nias tom qab ib nrab teev. Nias kom txog thaum cov dej alkaline nce mus txog 1: 2.8, thiab tom qab ntawd zom nws. Cov alkali cellulose zom raug muab tso rau hauv lub reactor, kaw, nqus tsev, thiab puv nrog nitrogen. Phau ntawv tshuaj xyuas ntau zaus nqus tsev thiab puv nrog nitrogen los hloov tag nrho cov huab cua hauv lub reactor. Nias rau hauv cov kua ethylene oxide uas tau ua ntej txias, muab dej txias rau hauv lub tsho reactor, thiab tswj qhov kub ntawm cov tshuaj tiv thaiv kom txog li 25 ℃ rau 2 teev kom tau txais cov khoom hydroxyethyl cellulose nyoos. Cov khoom nyoos raug ntxuav nrog cawv, neutralized nrog acetic acid rau pH 4-6, thiab cross-linked nrog glyoxal rau kev laus. Tom qab ntawd ntxuav nrog dej, centrifuge, dehydrate, ziab, thiab zom kom tau txais hydroxyethyl cellulose.
Lub sijhawm tshaj tawm: Lub Peb Hlis-28-2023
