Hydroxyethyl cellulose (HEC) fari ne ko rawaya mai haske, mara ƙamshi, mara guba, mai kama da fiber ko foda. An yi shi da auduga danye ko kuma ɓawon da aka tace, wanda aka jika a cikin ruwan soda mai kauri 30%. Bayan rabin sa'a, ana cire shi a matse shi. A matse har sai rabon ruwan alkaline ya kai 1:2.8, sannan a niƙa. Ana shirya shi ta hanyar amsawar etherification kuma yana cikin ƙwayoyin cellulose marasa ionic masu narkewa. Hydroxyethyl cellulose muhimmin abu ne mai kauri a cikin fenti na latex. Bari mu mai da hankali kan yadda ake amfani da hydroxyethyl cellulose HEC a cikin fenti na latex da kuma matakan kariya.
1. An haɗa shi da ruwan inabi mai ƙarfi don amfani: da farko a yi amfani da hydroxyethyl cellulose HEC don shirya ruwan inabi mai ƙarfi, sannan a ƙara shi a cikin samfurin. Fa'idar wannan hanyar ita ce tana da sassauci mafi girma kuma ana iya ƙara shi kai tsaye zuwa ga samfurin da aka gama, amma dole ne a adana shi yadda ya kamata. Matakan wannan hanyar sun yi kama da yawancin matakan da ke cikin hanya ta 2; bambancin shine babu buƙatar mai tayar da hankali mai ƙarfi, kuma wasu masu tayar da hankali ne kawai waɗanda ke da isasshen ƙarfi don kiyaye hydroxyethyl cellulose a warwatse a cikin maganin za a iya ci gaba da juyawa ba tare da tsayawa ba har sai ya narke gaba ɗaya ya zama ruwan da ba shi da kyau. Duk da haka, dole ne a lura cewa dole ne a ƙara maganin kashe ƙwayoyin cuta a cikin ruwan inabi mai ƙarfi da wuri-wuri.
2. Ƙara kai tsaye yayin samarwa: wannan hanyar ita ce mafi sauƙi kuma tana ɗaukar ɗan gajeren lokaci. Ƙara ruwa mai tsabta a cikin babban bokiti wanda aka sanye da injin haɗa mai ƙarfi. Fara juyawa akai-akai a ƙaramin gudu kuma a hankali a tace hydroxyethyl cellulose a cikin ruwan daidai gwargwado. Ci gaba da juyawa har sai dukkan ƙwayoyin sun jike. Sannan a ƙara abubuwan kiyayewa da ƙari iri-iri. Kamar launuka, abubuwan da ke warwatsewa, ruwan ammonia, da sauransu. A juya har sai dukkan hydroxyethyl cellulose HEC ya narke gaba ɗaya (danko na maganin yana ƙaruwa a bayyane) sannan a ƙara wasu abubuwan a cikin dabarar don amsawa.
Tunda sinadarin hydroxyethyl cellulose HEC da aka yi wa magani a samansa yana da ƙarfi ko kuma yana da ƙarfi, lokacin da ake shirya ruwan 'ya'yan itace na hydroxyethyl cellulose uwa, a kula da waɗannan abubuwan:
(1) Lokacin amfani da sinadarin hydroxyethyl cellulose HEC mai yawan ɗanko, yawan ruwan da ke cikin uwar giya bai kamata ya wuce kashi 2.5-3% ba (ta nauyi), in ba haka ba ruwan da ke cikin uwar giya zai yi wahalar sarrafawa.
(2) Kafin da kuma bayan ƙara hydroxyethyl cellulose HEC, dole ne a ci gaba da juyawa har sai ruwan ya bayyana kuma ya bayyana.
(3) Duk yadda zai yiwu, a ƙara maganin kashe ƙwayoyin cuta a gaba.
(4) Zafin ruwa da darajar pH na ruwa suna da alaƙa a bayyane da narkar da hydroxyethyl cellulose, don haka ya kamata a ba da kulawa ta musamman.
(5) Kada a ƙara wasu sinadarai masu alkaline a cikin cakuda kafin a jiƙa foda hydroxyethyl cellulose da ruwa. Ƙara pH bayan jiƙa zai taimaka wajen narkewa.
(6) Dole ne a tace shi a hankali a cikin tankin hadawa, kuma kada a ƙara adadi mai yawa ko kuma a saka hydroxyethyl cellulose kai tsaye wanda ya samar da dunƙule da ƙwallaye a cikin tankin hadawa.
Muhimman abubuwan da ke shafar danko na fenti na latex:
(1) Tsatsa mai kauri ta hanyar ƙwayoyin cuta.
(2) A tsarin yin fenti, ko jerin matakan ƙara mai kauri ya dace.
(3) Ko adadin abin kunna saman da ruwan da aka yi amfani da shi a cikin dabarar fenti ya dace.
(4) Rabon adadin sauran masu kauri na halitta da adadin hydroxyethyl cellulose a cikin tsarin fenti.
(5) Lokacin da aka samar da latex, abubuwan da ke cikin ragowar abubuwan kara kuzari da sauran oxides.
(6) Zafin jiki ya yi yawa yayin watsawa saboda yawan juyawa.
(7) Yawan kumfa na iska da ke cikin fenti, haka nan yawan danko yake.
Dankowar hydroxyethyl cellulose HEC yana canzawa kaɗan a cikin kewayon pH na 2-12, amma dankowar yana raguwa fiye da wannan kewayon. Yana da halayen kauri, dakatarwa, ɗaurewa, emulsifying, warwatsewa, kiyaye danshi da kuma kare colloid. Ana iya shirya mafita a cikin kewayon danko daban-daban. Ba ya da tabbas a ƙarƙashin yanayin zafi da matsin lamba na yau da kullun, yana guje wa danshi, zafi, da zafin jiki mai yawa, kuma yana da kyakkyawan narkewar gishiri ga dielectrics, kuma ruwan maganin sa yana da damar ɗauke da yawan gishiri kuma yana da karko.
Lokacin Saƙo: Afrilu-01-2023