I. Gabatarwa
Hydroxyethyl Cellulose (HEC) wani polymer ne mai narkewar ruwa wanda ba ionic ba wanda ake amfani da shi sosai a fannin haƙo mai, shafa mai, gini, sinadarai na yau da kullun, yin takarda da sauran fannoni. Ana samun HEC ta hanyar gyaran sinadarai na cellulose, kuma kaddarorinsa da amfaninsa galibi suna da alaƙa da abubuwan maye na hydroxyethyl akan ƙwayoyin cellulose.
II. Tsarin samarwa
Tsarin samar da HEC ya ƙunshi matakai kamar haka: cellulose etherification, wankewa, bushewa, busarwa da niƙawa. Ga cikakken bayani game da kowane mataki:
Cirewar Cellulose
Da farko ana yi wa cellulose magani da alkali don samar da alkali cellulose (cellulose Alkali). Wannan tsari yawanci ana yin sa ne a cikin wani reactor, ta amfani da maganin sodium hydroxide don magance cellulose na halitta don samar da alkali cellulose. Halayen sinadarai kamar haka:
Cell-OH+NaOH→Cell-O-Na+H2OCell-OH+NaOH→Cell-O-Na+H 2O
Sannan, alkali cellulose yana amsawa da ethylene oxide don samar da hydroxyethyl cellulose. Ana gudanar da amsawar ne a ƙarƙashin matsin lamba mai yawa, yawanci 30-100°C, kuma takamaiman amsawar ita ce kamar haka:
Cell-O-Na+CH2CH2O→Cell-O-CH2CH2OHCell-O-Na+CH 2CH 2O→Cell-O-CH 2CH 2OH
Wannan martanin yana buƙatar cikakken iko kan zafin jiki, matsin lamba da adadin ethylene oxide da aka ƙara don tabbatar da daidaito da ingancin samfurin.
Wankewa
Sakamakon HEC mai ɗanɗano yawanci yana ɗauke da alkali mara amsawa, ethylene oxide da sauran kayayyakin da ba su da amsawa, waɗanda ake buƙatar cire su ta hanyar wanke-wanke da ruwa ko wanke-wanke na halitta. Ana buƙatar ruwa mai yawa yayin aikin wanke-wanke, kuma ruwan sharar gida bayan wankewa yana buƙatar a yi masa magani da kuma fitar da shi.
Rashin ruwa
Ana buƙatar a cire ruwan HEC mai jika bayan an wanke shi, yawanci ta hanyar tacewa ta injin ko kuma raba shi da injin centrifugal don rage yawan danshi.
Busarwa
Ana busar da HEC ɗin da aka busar, yawanci ta hanyar busar da feshi ko busarwa a hankali. Dole ne a kula da zafin jiki da lokacin sosai yayin busarwa don guje wa lalacewar yanayin zafi mai yawa ko haɗuwa.
Nika
Busasshen tubalin HEC yana buƙatar a niƙa shi a tace shi don ya sami daidaiton girman barbashi, sannan a ƙarshe ya samar da foda ko foda.
III. Halayen Aiki
Narkewar ruwa
HEC yana da kyakkyawan narkewar ruwa kuma yana iya narkewa da sauri a cikin ruwan sanyi da ruwan zafi don samar da mafita mai haske ko mai haske. Wannan siffa ta narkewa yana sa a yi amfani da shi sosai a matsayin mai kauri da mai daidaita a cikin shafa da samfuran sinadarai na yau da kullun.
Kauri
HEC yana nuna ƙarfin kauri a cikin ruwan da ke cikinsa, kuma ɗankonsa yana ƙaruwa tare da ƙaruwar nauyin kwayoyin halitta. Wannan kauri yana ba shi damar taka rawa wajen kauri, riƙe ruwa da inganta aikin gini a cikin rufin ruwa da turmi na gini.
Ilimin halittar jini
Maganin ruwa na HEC yana da halaye na musamman na rheological, kuma dankonsa yana canzawa tare da canjin ƙimar yankewa, yana nuna ragewar yankewa ko kuma ƙwaƙƙwaran fata. Wannan sifar rheological tana ba shi damar daidaita ruwa da aikin gini a cikin rufi da ruwan haƙa mai.
Emulsification da dakatarwa
HEC yana da kyawawan kaddarorin emulsification da dakatarwa, waɗanda zasu iya daidaita barbashi ko ɗigon da aka dakatar a cikin tsarin watsawa don hana rarrabuwa da lalata. Saboda haka, ana amfani da HEC sau da yawa a cikin samfuran kamar su murfin emulsion da dakatarwar magunguna.
Rushewar Halitta
HEC wani sinadari ne na halitta wanda ke da kyakkyawan lalata muhalli, ba ya gurɓata muhalli, kuma yana cika buƙatun kare muhallin kore.
IV. Filin Aikace-aikace
Rufi
A cikin fenti mai tushen ruwa, ana amfani da HEC azaman mai kauri da mai daidaita don inganta ruwa, aikin gini da kuma kaddarorin hana lanƙwasawa na fenti.
Gine-gine
A cikin kayan gini, ana amfani da HEC a cikin turmi da foda mai tushen siminti don inganta aikin gini da riƙe ruwa.
Sinadaran Yau da Kullum
A cikin sabulun wanke-wanke, shamfu, da man goge baki, ana amfani da HEC a matsayin mai kauri da mai daidaita samfurin don inganta jin daɗi da kwanciyar hankali.
Filin mai
A cikin haƙa mai da kuma fashewar ruwa a filin mai, ana amfani da HEC don daidaita rheology da daskararrun kaddarorin ruwan haƙa da kuma inganta ingancin haƙa da aminci.
Yin Takardu
A tsarin yin takarda, ana amfani da HEC don sarrafa ruwan ɓawon burodi da kuma inganta daidaito da halayen saman takarda.
An yi amfani da Hydroxyethyl cellulose (HEC) sosai a fannoni da dama na masana'antu saboda kyawun narkewar ruwa, kauri, halayen rheological, emulsification da dakatarwa, da kuma kyakkyawan lalatawar halittu. Tsarin samar da shi ya yi kyau sosai. Ta hanyar matakan etherification na cellulose, wankewa, bushewa, busarwa da niƙa, ana iya shirya samfuran HEC masu aiki mai kyau da inganci mai kyau. A nan gaba, tare da inganta buƙatun kariyar muhalli da ci gaban fasaha, damar amfani da HEC za ta faɗi.
Lokacin Saƙo: Yuli-02-2024