Menene Hydroxyethyl Cellulose?
Hydroxyethyl cellulose (HEC), fari ko haske rawaya, wari, mara guba fibrous ko powdery m, shirya ta etherification dauki alkaline cellulose da ethylene oxide (ko chlorohydrin), nasa ne Nonionic soluble cellulose ethers. Tun da HEC yana da kyawawan kaddarorin thickening, suspending, dispersing, emulsifying, bonding, film-forming, kare danshi da kuma samar da colloid m, an yi amfani da ko'ina a cikin man fetur bincike, coatings, yi, magani, abinci, yadi, papermaking da polymer Polymerization. da sauran fagage.
Menene zai faru lokacin da hydroxyethyl cellulose ya hadu da fenti na tushen ruwa?
Kamar yadda ba-ionic surfactant,hydroxyethyl celluloseyana da kaddarorin masu zuwa ban da kauri, dakatarwa, ɗaure, iyo, shirya fim, tarwatsawa, riƙe ruwa da samar da colloid mai kariya:
HEC yana narkewa a cikin ruwan zafi ko ruwan sanyi, babban zafin jiki ko tafasa ba tare da hazo ba, don haka yana da nau'i mai yawa na solubility da halayen danko, da kuma gelation maras zafi;
Ƙarfin ajiyar ruwa ya ninka na methyl cellulose sau biyu, kuma yana da mafi kyawun tsarin tafiyar da ruwa;
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-tattara electrolyte mafita;
Yadda ake amfani da hydroxyethyl cellulose? Yadda za a ƙara shi?
Ƙara kai tsaye yayin samarwa - wannan hanya ita ce mafi sauƙi kuma tana ɗaukar mafi ƙarancin lokaci.
Ƙara ruwa mai tsabta zuwa babban guga sanye take da babban mahaɗa mai ƙarfi. Fara motsawa akai-akai a cikin ƙananan gudu kuma a hankali a tankade hydroxyethyl cellulose a cikin maganin daidai. Ci gaba da motsawa har sai dukkanin kwayoyin halitta sun jike. Sa'an nan kuma ƙara abubuwan kiyayewa da ƙari daban-daban. Irin su pigments, dispersing aids, ammonia ruwa, da dai sauransu. Dama har sai duk hydroxyethyl cellulose ne gaba daya narkar da (da danko na bayani ƙara muhimmanci) kafin ƙara wasu aka gyara a cikin dabara domin dauki.
Sanye take da uwa barasa
Shi ne don shirya uwar barasa tare da mafi girma maida hankali 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 matakai a 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 maganin za a iya ci gaba da ci gaba ba tare da tsayawa ba 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 maganin fungicide a cikin mahaifiyar giya da wuri-wuri.
Tunda ruwan hydroxyethyl cellulose da aka yi masa magani yana da foda ko ƙoshin fibrous, Lihongde yana tunatar da ku kula da waɗannan abubuwan yayin shirya giya na uwar hydroxyethyl cellulose:
(1) Kafin da kuma bayan ƙara hydroxyethyl cellulose, dole ne a ci gaba da motsawa har sai bayani ya zama cikakke kuma bayyananne.
(2) Dole ne a zazzage shi a hankali a cikin tanki mai hadewa, kuma kada a sanya adadi mai yawa ko kuma a sanya hydroxyethyl cellulose kai tsaye a cikin tankin hadawa.
(3) Ruwan zafin jiki da ƙimar PH a cikin ruwa suna da alaƙa mai mahimmanci tare da rushewar hydroxyethyl cellulose, don haka dole ne a biya kulawa ta musamman.
(4) Kada a ƙara wasu abubuwa na alkaline a cikin cakuda kafin a jika foda hydroxyethyl cellulose da ruwa. Kiwon pH bayan wetting yana taimakawa wajen narkewa.
(5) Kamar yadda zai yiwu, ƙara wakili na antifungal a gaba
(6) Lokacin amfani da high-viscosity hydroxyethyl cellulose, maida hankali na uwa barasa kada ya zama sama da 2.5-3% (ta nauyi), in ba haka ba uwar barasa zai yi wuya a rike.
Lokacin aikawa: Dec-26-2022