Hydroxyethyl cellulose (HEC) ndi yoyera kapena yopepuka yachikasu, yopanda fungo, yopanda poizoni kapena yolimba yaufa yokonzedwa ndi etherification ya cellulose yamchere ndi ethylene oxide (kapena chlorohydrin). Nonionic soluble cellulose ethers. Kuphatikiza pa kukhuthala, kuyimitsa, kumanga, kuyandama, kupanga mafilimu, kubalalitsa, kusunga madzi ndi kupereka ma colloids oteteza, ali ndi zotsatirazi:
1. HEC imasungunuka m'madzi otentha kapena ozizira, ndipo sichimawotcha kutentha kwambiri kapena kutentha, kotero kuti imakhala ndi mitundu yambiri ya solubility ndi viscosity, ndi gelation yopanda kutentha;
2. Zopanda ionic zokha zimatha kukhala pamodzi ndi ma polima ena osungunuka m'madzi, ma surfactants ndi mchere, ndipo ndi yabwino kwambiri ya colloidal thickener yomwe ili ndi ma electrolyte apamwamba kwambiri;
3. Mphamvu yosungira madzi imakhala yowirikiza kawiri kuposa ya methyl cellulose, ndipo imakhala ndi malamulo oyendetsera bwino.
4. Poyerekeza ndi methyl cellulose yodziwika bwino ndi hydroxypropyl methyl cellulose, mphamvu yobalalika ya HEC ndiyoipa kwambiri, koma colloid yotetezera imakhala ndi mphamvu zolimba kwambiri. Chifukwa HEC ili ndi katundu wabwino wa thickening, kuyimitsa, kumwazikana, emulsifying, kugwirizana, kupanga mafilimu, kuteteza chinyezi ndi kupereka colloid zoteteza, zakhala zikugwiritsidwa ntchito kwambiri pofufuza mafuta, zokutira, zomangamanga, mankhwala ndi chakudya, nsalu, mapepala ndi polima polymerization. ndi minda ina.
Kusamalitsa:
Popeza kuti hydroxyethyl cellulose yopangidwa pamwamba ndi ufa kapena cellulose olimba, n'zosavuta kugwira ndi kusungunuka m'madzi malinga ngati zinthu zotsatirazi zikudziwika.
1. Musanayambe komanso mutatha kuwonjezera hydroxyethyl cellulose, iyenera kugwedezeka mosalekeza mpaka yankho likuwonekera bwino komanso lomveka bwino.
2. Iyenera kusefedwa mu mbiya yosakaniza pang'onopang'ono, ndipo musawonjezere mwachindunji hydroxyethyl cellulose yomwe yapangidwa kukhala zotupa ndi mipira mu mbiya yosakaniza.
3. Kutentha kwa madzi ndi pH mtengo wa madzi ali ndi ubale woonekeratu ndi kusungunuka kwa hydroxyethyl cellulose, kotero chidwi chapadera chiyenera kuperekedwa kwa izo.
4. Osawonjezerapo zinthu za alkaline kusakaniza ufa wa hydroxyethyl cellulose usanatenthedwe ndi madzi. Kukweza mtengo wa PH mutatha kutentha ndikothandiza pakusungunuka.
5. Momwe mungathere, onjezerani antifungal agents mwamsanga.
6. Mukamagwiritsa ntchito high-viscosity hydroxyethyl cellulose, kuchuluka kwa mowa wa mayi sayenera kupitirira 2.5-3%, apo ayi mowa wa amayi udzakhala wovuta kupirira. Ma cellulose a hydroxyethyl pambuyo pothiridwa nthawi zambiri sakhala osavuta kupanga minyewa kapena mabwalo, ndipo sapanga ma colloid ozungulira osasungunuka atawonjezera madzi.
Nthawi yotumiza: Nov-15-2022