Hydroxyethyl cellulose (HEC), wani fari ko haske rawaya, wari, mara guba fibrous ko powdery m, wanda aka shirya ta hanyar etherification na alkaline cellulose da ethylene oxide (ko chlorohydrin), na cikin halittar Nonionic soluble cellulose ethers. Saboda HEC yana da kyawawan kaddarorin thickening, dakatarwa, tarwatsawa, emulsifying, haɗin gwiwa, ƙirƙirar fim, kare danshi da samar da colloid masu kariya, an yi amfani dashi sosai a cikin binciken mai, sutura, gini, magani da abinci, yadi, yin takarda da polymers. Polymerization da sauran filayen.
Bayan hydroxyethyl cellulose ya hadu da fenti na ruwa?
A matsayin surfactant ba ionic, hydroxyethyl cellulose yana da wadannan kaddarorin ban da thickening, suspending, dauri, flotation, film-forming, dispersing, ruwa rike da kuma samar da m colloid:
HEC yana narkewa a cikin ruwan zafi ko ruwan sanyi, kuma baya haɓaka a babban zafin jiki ko tafasa, yana sa shi yana da nau'i mai yawa na solubility da danko, da kuma gelling maras zafi;
Ƙarfin riƙewar ruwa shine sau biyu na methyl cellulose, kuma yana da mafi kyawun tsari na kwarara;
Idan aka kwatanta da gane methyl cellulose da hydroxypropyl methyl cellulose, da dispersing ikon HEC ne mafi muni, amma m colloid ikon ne mafi karfi;
Ba shi da ionic kuma yana iya zama tare da ɗimbin kewayon sauran polymers masu narkewar ruwa, surfactants, da gishiri. Yana da kyau kwarai colloidal thickener ga high-natsuwa electrolyte mafita.
Yadda ake amfani da hydroxyethyl cellulose?
Ƙara kai tsaye a lokacin samarwa - wannan hanya ita ce mafi sauƙi kuma tana ɗaukar lokaci kaɗan:
Fara motsawa akai-akai a cikin ƙananan gudu kuma a hankali a hankali tace hydroxyethyl cellulose a ko'ina cikin maganin kuma ci gaba da motsawa har sai dukkanin barbashi sun jike ta. Sa'an nan kuma ƙara abubuwan kiyayewa da ƙari daban-daban. Kamar su pigments, dispersing aids, ammonia, da dai sauransu. Dama har sai duk hydroxyethyl cellulose ne gaba daya narkar da (da danko na bayani yana ƙaruwa sosai) kafin ƙara wasu aka gyara a cikin dabara don aiwatar da dauki.
Sanye take da uwa barasa
Shi ne don shirya wata uwa barasa tare da mafi girma maida hankali da farko, sa'an nan kuma ƙara da shi a cikin samfurin. Amfanin wannan hanyar shine yana da mafi girman sassauci kuma ana iya ƙara shi kai tsaye zuwa samfurin da aka gama, amma dole ne a adana shi da kyau. Matakan wannan hanyar sun yi kama da yawancin matakan da ke cikin Hanyar 1; Bambance-bambancen shine cewa babu buƙatar mai tayar da hankali mai ƙarfi, kuma kawai wasu masu tayar da hankali waɗanda ke da isasshen iko don kiyaye hydroxyethyl cellulose daidai tarwatsawa a cikin bayani za a iya amfani da su, kuma a ci gaba da motsawa har sai an narkar da gaba daya a cikin wani bayani mai danko. Duk da haka, dole ne a lura cewa dole ne a ƙara wakili na antifungal a cikin mahaifiyar giya da wuri-wuri.
Nasiha mai kyau:
Tunda hydroxyethyl cellulose da aka bi da shi yana da foda ko fibrous m, lokacin shirya hydroxyethyl cellulose uwar barasa, tunatar da ku kula da wadannan maki:
Kafin da kuma bayan ƙara hydroxyethyl cellulose, dole ne a ci gaba da motsawa har sai bayani ya zama cikakke kuma bayyananne;
Dole ne a siffata shi a cikin ganga mai gauraya sannu a hankali, kuma kada a haɗa lumps ko spheroids da hydroxyethyl cellulose kai tsaye a cikin ganga mai gauraya;
Ruwan zafin jiki da darajar pH na ruwa suna da dangantaka mai mahimmanci tare da rushewar hydroxyethyl cellulose, don haka ya kamata a biya kulawa ta musamman;
Kada a ƙara wasu abubuwan alkaline zuwa gaurayawan kafinhydroxyethyl celluloseana jika foda da ruwa. Haɓaka darajar pH bayan jiƙa zai taimaka narkewa;
Har zuwa yiwu, ƙara wakili na antifungal a gaba;
Lokacin amfani da high-viscosity hydroxyethyl cellulose, maida hankali na uwar barasa kada ya zama sama da 2.5-3% (ta nauyi), in ba haka ba uwar barasa da wuya a rike.
Lokacin aikawa: Afrilu-28-2024