Khalidwe:Hydroxyethyl Cellulose (HEC CAS:9004-62-0) ndi ufa woyera kapena wachikasu wopanda fungo, wopanda fungo, komanso woyenda mosavuta. Umasungunuka m'madzi ozizira komanso m'madzi otentha, koma nthawi zambiri susungunuka m'zinthu zambiri zachilengedwe. pH imasintha pang'ono pakati pa 2-12, koma kukhuthala kumachepa kupitirira pamenepo.
Mtengo：Hydroxyethyl Cellulose (HEC CAS:9004-62-0) ndi chinthu chokhuthala chomwe chimagwiritsidwa ntchito kwambiri pa inki yamadzi yochokera ku cellulose ether. Ndi chinthu chopanda ionic chomwe chimasungunuka m'madzi chomwe chili ndi mphamvu yabwino yokhuthala madzi, chimatha kuwonongeka ndi mpweya, ma acid, ndi ma enzyme, ndipo chimatha kulumikizidwa ndi Cu2+ pansi pa mikhalidwe ya alkaline. Ndi chokhazikika pa kutentha, sichimawoneka ngati gel panthawi yotenthetsera, sichimagwa pansi pa mikhalidwe ya acidic, ndipo chili ndi mphamvu yabwino yopangira filimu. Yankho lake lamadzi lingapangidwe kukhala mafilimu owonekera, omwe angapangidwe ndi ntchito ya alkaline cellulose ndi Chemicalbook ethylene oxide, ndipo ali ndi mphamvu zokhuthala, emulsification, adhesion, suspension, film-forming, mosungira chinyezi, ndi chitetezo cha colloid. Ntchito ya zokhuthala mu inki yochokera m'madzi ndikuzikulitsa. Kuwonjezera zokhuthala ku inki kumawonjezera kukhuthala kwake, komwe kungathandize kukhazikika kwa inki mwakuthupi ndi mankhwala; Chifukwa cha kuchuluka kwa kukhuthala, rheology ya inki imatha kulamulidwa panthawi yosindikiza; Utoto ndi chodzaza mu inki sizophweka kuzikonza, zomwe zimapangitsa kuti inki yochokera m'madzi ikhale yolimba.
Njira Yopangira：Alkali cellulose ndi polima wachilengedwe wokhala ndi magulu atatu a hydroxyl pa mphete iliyonse ya ulusi. Gulu la hydroxyl lomwe limagwira ntchito kwambiri limachitapo kanthu kuti lipange hydroxyethyl cellulose. Zilowerereni thonje losaphika kapena la pulp woyengedwa mu 30% yamadzimadzi a alkali, ndikulitulutsa kuti likanikizidwe patatha theka la ola. Kanikizani mpaka madzi a alkaline afike pa 1:2.8, kenako muphwanyire. Alkaline cellulose wophwanyidwayo amayikidwa mu reactor, kutsekedwa, kutsukidwa, ndikudzazidwa ndi nayitrogeni. Chemicalbook imatsukidwa mobwerezabwereza ndikudzazidwa ndi nayitrogeni kuti mulowe m'malo mwa mpweya wonse mu reactor. Kanikizani mu ethylene oxide madzi oziziritsidwa kale, perekani madzi ozizira mu jekete la reactor, ndikulamulira kutentha kwa reaction kufika pafupifupi 25 ℃ kwa maola awiri kuti mupeze crude hydroxyethyl cellulose product. crude product imatsukidwa ndi mowa, kuchepetsedwa ndi acetic acid kufika pa pH 4-6, ndikulumikizidwa ndi glyoxal kuti ikule. Kenako sambani ndi madzi, centrifuge, pukutani madzi, pukutani, ndikupukuta kuti mupeze hydroxyethyl cellulose.
Nthawi yotumizira: Mar-28-2023
