Kodi hydroxyethyl cellulose ndi chiyani?

Kodi hydroxyethyl cellulose ndi chiyani?

Hydroxyethyl cellulose (HEC), cholimba choyera kapena chopepuka chachikasu, chopanda fungo, chopanda poizoni kapena chopanda ufa, chokonzedwa ndi etherization ya alkaline cellulose ndi ethylene oxide (kapena chlorohydrin), chomwe chili m'gulu la Nonionic soluble cellulose ethers. Chifukwa HEC ili ndi zinthu zabwino monga kukhuthala, kuyimitsa, kufalitsa, kusakaniza, kulumikiza, kupanga filimu, kuteteza chinyezi ndi kupereka ma colloids oteteza, yagwiritsidwa ntchito kwambiri pakufufuza mafuta, zokutira, zomangamanga, mankhwala ndi chakudya, nsalu, kupanga mapepala ndi ma polima. Polymerization ndi madera ena.

Hydroxyethyl cellulose imagwiritsidwa ntchito kwambiri mumakampani opanga zophimba. Tiyeni tiwone momwe imagwirira ntchito mu zophimba:

Kodi chimachitika n’chiyani ngati hydroxyethyl cellulose yakumana ndi zokutira zochokera m’madzi?

Monga mankhwala osakhala a ionic surfactant, hydroxyethyl cellulose ili ndi zinthu zotsatirazi kuwonjezera pa kukhuthala, kuyimitsa, kumangirira, kuyandama, kupanga filimu, kufalitsa, kusunga madzi ndi kupereka ma colloids oteteza:

HEC imasungunuka m'madzi otentha kapena ozizira, ndipo siuma pa kutentha kwambiri kapena kuwira, zomwe zimapangitsa kuti ikhale ndi mitundu yosiyanasiyana ya kusungunuka ndi kukhuthala, komanso gelling yosatentha;

Mphamvu yosungira madzi ndi yowirikiza kawiri kuposa methyl cellulose, ndipo ili ndi kayendedwe kabwino ka madzi;

Chokhacho chomwe sichili cha ionic chingathe kukhala pamodzi ndi ma polima ena ambiri osungunuka m'madzi, ma surfactants, ndi mchere, ndipo ndi chokhuthala chabwino kwambiri cha colloidal chokhala ndi mayankho a electrolyte okhala ndi kuchuluka kwakukulu;

Poyerekeza ndi methyl cellulose yodziwika bwino ndi hydroxypropyl methyl cellulose, mphamvu yobalalitsira yaHECndiye woipa kwambiri, koma mphamvu yoteteza ya colloid ndiyo yamphamvu kwambiri.

Popeza hydroxyethyl cellulose yokonzedwa pamwamba ndi yolimba ngati ufa kapena ulusi, Shandong Heda ikukumbutsani kuti muzisamala mfundo zotsatirazi mukakonza mowa wa hydroxyethyl cellulose:

(1) Musanawonjezere hydroxyethyl cellulose komanso mutatha kuisakaniza, iyenera kusunthidwa mpaka yankholo litawonekera bwino komanso loyera.

(2) Iyenera kusefedwa pang'onopang'ono mu mbiya yosakaniza, ndipo musalumikize mwachindunji hydroxyethyl cellulose ndi hydroxyethyl cellulose mu mbiya yosakaniza mochuluka kapena ngati mikwingwirima ndi mipira.

(3) Kutentha kwa madzi ndi pH ya madzi zimagwirizana bwino ndi kusungunuka kwa hydroxyethyl cellulose, kotero chisamaliro chapadera chiyenera kuperekedwa kwa izo.

(4) Musawonjezere zinthu zina zamchere mu chisakanizocho musananyowetse ufa wa hydroxyethyl cellulose. Kukweza pH pokhapokha mutanyowetsa kungathandize kusungunuka.

(5) Momwe mungathere, onjezerani mankhwala ophera ma fungi pasadakhale.

(6) Mukagwiritsa ntchito hydroxyethyl cellulose yokhala ndi kukhuthala kwakukulu, kuchuluka kwa mowa wothira sikuyenera kupitirira 2.5-3% (potengera kulemera), apo ayi mowa wothira ndi wovuta kuugwiritsa ntchito.