Hydroxyethyl cellulose (HEC) fari ne ko launin rawaya mai haske, mara wari, ba mai guba ba ko foda mai ƙarfi, an yi shi da ɗanyen auduga ko kuma tsaftataccen ɓangaren litattafan almara wanda aka jiƙa a cikin alkali mai ruwa 30%, ana fitar da shi ana matsewa bayan rabin sa'a, Matsi har sai rabo. na ruwan alkaline ya kai 1:2.8, sannan a murkushe. An shirya shi ta hanyar amsawar etherification kuma nasa ne na ethers cellulose masu narkewa marasa ionic. Hydroxyethyl cellulose wani muhimmin kauri ne a cikin fenti na latex. Bari mu mai da hankali kan yadda ake amfani da hydroxyethyl cellulose HEC a cikin fenti na latex da matakan kariya.
1. An sanye shi da giya na uwa don amfani: da farko amfani da hydroxyethyl cellulose HEC don shirya uwar barasa tare da mafi girma maida hankali, 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 2; 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.
2. 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 water, da dai sauransu. Dama har sai duk hydroxyethyl cellulose HEC an narkar da gaba daya (da danko na bayani ƙara a fili) sa'an nan ƙara wasu aka gyara a cikin dabara domin dauki.
Matakan kariya;
(1) Lokacin amfani da high-viscosity hydroxyethyl cellulose HEC, maida hankali na uwar barasa kada ya zama sama da 2.5-3% (ta nauyi), in ba haka ba uwar barasa zai yi wuya a rike.
(2) Kafin da kuma bayan ƙara hydroxyethyl cellulose HEC, dole ne a ci gaba da motsawa har sai bayani ya zama cikakke kuma bayyananne.
(3) Kamar yadda zai yiwu, ƙara wakili na antifungal a gaba.
(4) Zazzabi na ruwa da ƙimar pH na ruwa suna da alaƙa a bayyane ga rushewar hydroxyethyl cellulose, don haka ya kamata a biya kulawa ta musamman.
(5) Kada a ƙara wasu abubuwa na alkaline a cikin cakuda kafin a jika foda hydroxyethyl cellulose da ruwa. Tada pH bayan jiƙa zai taimaka narkewa.
(6) Dole ne a tsoma shi a hankali a cikin tanki mai gauraya, kuma kada a ƙara adadi mai yawa ko kai tsaye a ƙara hydroxyethyl cellulose wanda ya kafa dunƙule da ƙwallo a cikin tanki mai haɗuwa.
Muhimman abubuwan da ke shafar danko na fenti na latex:
1 Lalacewar kauri ta hanyar ƙwayoyin cuta.
2 A cikin aikin fenti, ko jerin ƙara mai kauri daidai ne.
3 Ko adadin mai kunna sararin sama da adadin ruwa a cikin dabarar fenti sun dace.
4 Matsakaicin adadin sauran masu kauri na halitta zuwa adadin hydroxyethyl cellulose a cikin ƙirar fenti.
5 Lokacin da aka samar da latex, abun ciki na ragowar masu kara kuzari da sauran oxides.
6 Zazzabi ya yi yawa yayin tarwatsewa saboda yawan motsawa.
7 Yawan kumfa na iska ya kasance a cikin fenti, mafi girman danko.
Danko na hydroxyethyl cellulose HEC yana canzawa kadan a cikin kewayon pH na 2-12, amma danko yana raguwa fiye da wannan kewayon. Yana da Properties na thickening, suspending, dauri, emulsifying, dispersing, rike danshi da kuma kare colloid. Ana iya shirya mafita a cikin jeri daban-daban na danko. M a karkashin al'ada zafin jiki da matsa lamba, kauce wa zafi, zafi, da kuma high zafin jiki, kuma yana da kwarai mai kyau gishiri solubility zuwa dielectrics, da ruwaye bayani da aka yarda ya ƙunshi high yawa na salts kuma ya kasance barga.
Lokacin aikawa: Fabrairu-14-2023