Dab tsi yog hydroxyethyl cellulose?
Hydroxyethyl cellulose (HEC), dawb lossis daj ntseg, npaj los ntawm lub tshuab ua yeeb yam ntawm ob sab caj ces (lossis cantreny Vim tias HEC muaj cov khoom zoo xws li thickening, kev sib raug zoo, kev tiv thaiv thiab khoom noj, cov ntawv nyeem, cov khoom noj, cov ntawv nyeem, papermaking thiab polymers. Polymerization thiab lwm thaj teb.
Hydroxyethyl cellulose yog dav siv nyob rau hauv cov txheej txheem kev lag luam. Cia wb saib seb nws ua haujlwm li cas hauv cov txheej txheem:
Yuav muaj dab tsi tshwm sim thaum hydroxyethyl cellulose tau raws li cov txheej txheem dej ua ke?
Raws li cov tsis yog-ionic surfactant, hydroxyethyl cellulose muaj cov khoom siv hauv qab no ntxiv rau, kev sib tw, cov dej ua ke thiab muab cov tshuaj tiv thaiv kab mob:
HEC yog soluble nyob rau hauv dej kub lossis dej txias, thiab tsis precipitate ntawm qhov kub lossis rhaub, ua nws muaj ntau yam ntawm solubility thiab viscosity birming;
Lub peev xwm kav dej ua haujlwm yog ob zaug ntawm methyl cellulose, thiab nws tau ntws zoo dua ntws cov cai;
Cov tsis yog-ionic nws tus kheej muaj peev xwm sib xyaw nrog ntau yam dej-soluble polymers, thiab ntsev, thiab yog cov ntsev zoo nkauj uas muaj cov kev daws teeb meem electrolyte.
Piv nrog lees paub methyl cellulose thiab hydroxypropyl cellulose, lub zog impersing ntawm HEC yog qhov phem tshaj, tab sis kev tiv thaiv kev tiv thaiv kev muaj peev xwm yog qhov muaj zog tshaj.
Txij li thaum nto-kho hydrothethyl cellulose yog ib tug hmoov av, shandong Heda ua rau koj nco ntsoov ua kom cov ntsiab lus hydroxyethyl cellulose niam cawv:
(1) Ua ntej thiab tom qab ntxiv hydroxyethyl cellulose, nws yuav tsum cia ua stirulose kom txog thaum cov kev daws teeb meem tau meej thiab meej.
(2) Nws yuav tsum maj mam siled rau hauv kev sib xyaw ua ke, thiab tsis txhob txuas ncaj qha rau hauv hydroxyethyl cellulose rau hauv cov khoom sib xyaw lossis hauv daim ntawv ntawm cov lumps thiab cov pob.
(3) Cov dej kub thiab tus nqi ntawm cov dej muaj kev sib raug zoo ntawm hydroxyethyl cellulose, yog li tshwj xeeb saib yuav tsum tau them rau nws.
(4) Tsis txhob ntxiv qee cov tshuaj alkaline rau cov sib tov ua ntej cov hmoov hydroxyethyl hmoov yog tsau nrog dej. Tsa lub p tsuas yog tom qab ntub dej yuav pab tau los ntawm kev sib cais.
(5) kom deb li deb tau, ntxiv cov antifungal neeg sawv cev ua ntej.
(6) Thaum siv cov viscosy hydroxyethyl cellulose, lub concentration ntawm niam cawv yuav tsum tsis txhob siab dua 2.5-3% (los ntawm qhov hnyav), tsis li ntawm tus niam cawv yog qhov nyuaj rau lis.
Lub Sijhawm Post: Nov-16-2022