Kodi hydroxyethyl cellulose ndi chiyani pa zokutira!

Hydroxyethyl cellulose ndi chiyani?

Hydroxyethyl cellulose (HEC), yoyera kapena yopepuka yachikasu, yopanda fungo, yopanda poizoni kapena yolimba, yokonzedwa ndi etherification ya cellulose yamchere ndi ethylene oxide (kapena chlorohydrin), ndi ya Nonionic soluble cellulose ethers. Popeza 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, chakudya, nsalu, kupanga mapepala ndi polymerization. ndi minda ina.

Kodi chimachitika ndi chiyani ngati hydroxyethyl cellulose ikumana ndi utoto wamadzi?

Monga surfactant yopanda ionic,hydroxyethyl celluloseali ndi zinthu zotsatirazi kuphatikiza kukhuthala, kuyimitsa, kumanga, kuyandama, kupanga mafilimu, kubalalitsa, kusunga madzi komanso kupereka colloid yoteteza:

HEC imasungunuka m'madzi otentha kapena madzi ozizira, kutentha kwakukulu kapena kuwira popanda mvula, kotero kuti imakhala ndi mitundu yambiri ya solubility ndi viscosity, ndi gelation yosatentha;

Mphamvu yosungira madzi imakhala yowirikiza kawiri kuposa ya methyl cellulose, ndipo imakhala ndi malamulo oyendetsera bwino;

Poyerekeza ndi methyl cellulose yodziwika bwino ndi hydroxypropyl methyl cellulose, kuthekera kobalalika kwa HEC ndikoyipa kwambiri, koma luso loteteza la colloid ndilolimba kwambiri.

Si ionic ndipo imatha kukhala limodzi ndi ma polima ena osungunuka m'madzi, ma surfactants, ndi mchere. Ndibwino kwambiri colloidal thickener kwa high-concentration electrolyte solutions;

Momwe mungagwiritsire ntchito hydroxyethyl cellulose? Kodi kuwonjezera izo?

Onjezani mwachindunji panthawi yopanga - njirayi ndi yosavuta komanso imatenga nthawi yochepa kwambiri.

Onjezani madzi oyera pachidebe chachikulu chokhala ndi chosakaniza chometa ubweya wambiri. Yambani kugwedezeka mosalekeza pa liwiro lotsika ndikusefa pang'onopang'ono hydroxyethyl cellulose mu yankho mofanana. Pitirizani kusonkhezera mpaka particles zonse zilowerere. Kenaka yikani zotetezera ndi zina zowonjezera. Monga inki, dispersing zothandizira, ammonia madzi, etc. Muziganiza mpaka onse hydroxyethyl mapadi kusungunuka kwathunthu (kukhuthala kwa kukhuthala kwa yankho kumawonjezera kwambiri) pamaso kuwonjezera zigawo zina mu chilinganizo anachita.

Zokhala ndi chakumwa cha mayi

Ndiko kukonzekeretsa chakumwa cha mayi ndi mlingo wapamwamba choyamba, ndiyeno kuwonjezera pa mankhwalawo. Ubwino wa njirayi ndikuti umakhala ndi kusinthasintha kwakukulu ndipo ukhoza kuwonjezeredwa mwachindunji ku mankhwala omalizidwa, koma ayenera kusungidwa bwino. Masitepe a njirayi ndi ofanana ndi masitepe ambiri mu njira 1; kusiyana ndi kuti palibe chifukwa mkulu-kumeta ubweya agitator, ndi ena agitators ndi mphamvu zokwanira kusunga mapadi hydroxyethyl uniformly omwazika mu yankho akhoza kupitilizidwa popanda kusiya Kusonkhezera mpaka kwathunthu kusungunuka mu njira viscous. Komabe, ziyenera kudziwidwa kuti fungicide iyenera kuwonjezeredwa ku mowa wa amayi posachedwa.

Popeza kuti hydroxyethyl cellulose wothiridwa pamwamba ndi ufa kapena ulusi wolimba, Lihongde akukumbutsani kuti musamalire mfundo izi pokonzekera chakumwa cha mayi cha hydroxyethyl cellulose:

(1) Isanayambe komanso itatha kuwonjezera hydroxyethyl cellulose, iyenera kugwedezeka mosalekeza mpaka yankho likuwonekera bwino komanso lomveka bwino.

(2) Iyenera kusefedwa pang'onopang'ono mu thanki yosanganikirana, ndipo musaike kuchuluka kapena kuyika mwachindunji hydroxyethyl cellulose mu thanki yosakaniza.

(3) Kutentha kwa madzi ndi mtengo wa PH m'madzi kumakhala ndi ubale wofunikira ndi kusungunuka kwa cellulose ya hydroxyethyl, kotero chisamaliro chapadera chiyenera kulipidwa.

(4) Osawonjezera zinthu za alkaline kusakaniza ufa wa hydroxyethyl cellulose usanalowedwe ndi madzi. Kukweza pH pambuyo pakunyowetsa kumathandiza kusungunuka.

(5) Momwe mungathere, onjezerani antifungal wothandizira pasadakhale

(6) Pamene ntchito mkulu mamasukidwe akayendedwe mapadi hydroxyethyl mapadi, ndende ya mowa mayi sayenera kupitirira 2.5-3% (ndi kulemera), apo ayi mowa mayi adzakhala ovuta kupirira.