Sellululose na Hydroxyl (HEC) wani yanki ne na polymer, ruwa mai narkewa daga sel, polymer na halitta wanda aka samo a bangon sel na tsirrai. Ana amfani dashi sosai a cikin masana'antu daban-daban, gami da magunguna, zane-zane, saboda kyakkyawan thickening, fim-forming, da kuma rheolical kaddarorin. Shirye-shiryen sel na sel na Selfulose sun ƙunshi gaggafa na sel tare da ethylene oxide a ƙarƙashin yanayin alkaline. Wannan tsari za'a iya rushe shi cikin matakai masu yawa: Tsabtace sel mai tsarkakewa, alkuralization, eheriration, wankewa, da bushewa.
1. Tsarkakakken sel
Mataki na farko a cikin shirye-shiryen sel na Hydroxyl shine tsarkake selulose, yawanci ya samo asali ne daga ɓangaren ɓangaren litattafan almara ko ɗakin auduga. Bretulose na ɗanyen pelulose ya ƙunshi ƙazanta kamar Ligntin, Hemiclulose, da sauran abubuwan cirewa waɗanda dole ne a cire su don samun pelululose mai tsabta wanda ya dace da gyaran sinadarai.
Matakan da ke ciki:
Injiniya na inji: an sarrafa shi mai ɗorewa na inji don rage girmansa da haɓaka yankinta na yanki, yana sauƙaƙe jiyya mai sinadarai.
Jiyya na sinadarai: Ana kula da Cellulose tare da sunadarai kamar sodium hydroxide (Nisso3) don wanke Ligntin da Hemmoze don cire rarar sa da kuma sedium na farfado da fararen ƙazanta da kuma samun fararen ƙazanta kuma suna da fararen fata.
2. Alkalization
An tsabtace sel mai tsarkakewa don kunna shi don amsawar ehorite. Wannan ya shafi lura da sel tare da maganin ruwan sodium hydroxide.
Dauki:
Cellulose + Naho → Alkali Slell
Tsarin:
An dakatar da Cellulose a cikin ruwa, an ƙara maganin sodium hydroxide. A maida hankali ne na Naho yawanci daga 10-30%, kuma ana aiwatar da amsawar a yanayin zafi tsakanin 20-40 ° C.
A cakuda da aka zuga don tabbatar da karin karfin uniform na alkali, yana haifar da samuwar alkalillulose. Wannan matsakaici shine mafi yawan amsoshin ethylene oxide, yana sauƙaƙe aiwatar da tsari.
3. Ethadation
Mataki na gaba a cikin shirye-shiryen sel na Hydroxyl shine Elhara na Alkalillelulose tare da ethylene oxide. Wannan martabar ta gabatar da kungiyoyin Hydroxyl (-CH2CH2OH) cikin kashin selulose, sanya shi ruwa-sanyi.
Dauki:
Alkali celulame + ethylene kumar
Tsarin:
Ethylene oxide an ƙara zuwa ga alkalulose, ko dai a cikin tsari ko ci gaba da aiwatarwa. A dauki yawanci ana gudanar da shi a cikin wani autoclave ko matsa lamba na matsa lamba.
Yanayin da aka yi, gami da zazzabi (50-100 ° C) da matsin lamba (1-5 ATM), ana sarrafa atm a hankali don tabbatar da canji sosai ga ƙungiyoyin Hydroxyethyl. Matsayi na musanya (DS) da kuma Canji Mark (MS) sigogi ne masu mahimmanci waɗanda ke tasiri kan kaddarorin samfurin ƙarshe.
4. Cikakke
Bayan amsawar extoration, cakuda yana dauke da sel na hydroxyl da kuma saura sodium hydroxide. Mataki na gaba shine tsinkaye, inda aka yi amfani da abin da aka yi amfani da shi da wuce haddi alkali ta amfani da acid, yawanci acetic acid (ch3coo) ko acid na hcl).
Amsanci: Naha + hcl → nacl + h2o
Tsarin:
Acid ana ƙara a hankali a haɗa da cakuda da aka yi a ƙarƙashin yanayin sarrafawa don guje wa matsanancin zafi da hana lalata ƙwayar ƙwayar ƙwayar ƙwayar cuta ta Hydroxyl.
Ana cire cakuda neutiralzed zuwa daidaitawa don tabbatar da shi a cikin kewayon kewayon kewayon, yawanci a kusa da ph (6-8).
5. Wanke
Bayan haka, dole ne a wanke samfurin don cire salts da sauran samfuran samfuran. Wannan matakin yana da mahimmanci don samun sel mai tsabta ta hydroxyl.
Tsarin:
A dauki cakuda da aka d dilla da ruwa, kuma sel mai hydroxyl ya rabu da tacewa ko centrifugation.
An wanke sel mai rabuwa da ruwa mai sauƙin wanka akai-akai tare da ruwa mai narkewa don cire kayan ado da ƙazanta. Tsarin wanki ya ci gaba har sai ruwan wanka ya kai ƙayyadadden halin da aka ƙayyade, yana nuna cirewar rashin daidaituwa.
6. Bushewa
Mataki na ƙarshe a cikin shirye-shiryen sel na Hydroxyl yana bushe. Wannan matakin yana cire yawan ruwa mai yawa, samar da bushe bushe, powdered samfurin da ya dace don aikace-aikace iri-iri.
Tsarin:
A wanke hydroxyl sel ya bazu a kan bushewa trays ko isar da ta hanyar bushewa. Zazzabin bushewar zafin jiki ana sarrafa shi sosai don guje wa lalata da yanayin zafi, yawanci yana ci gaba daga 50-80 ° C.
A madadin haka, ana iya amfani da bushewa mai laushi don bushewa da ingantaccen bushewa. A cikin bushewa na SPRAY, wanda ya fi dacewa hydroose bayani yana da kyau zuwa kyakkyawan droplets da bushe a cikin rafi mai zafi, wanda ya haifar da foda mai zafi.
An bushe samfurin da aka haƙa zuwa girman raunin da ake so kuma ya tattara don ajiya da rarrabuwa.
Gudanar da inganci da aikace-aikace
A cikin dukkanin tsarin shirye-shiryen, ana aiwatar da matakan kulawa masu inganci don tabbatar da daidaito da ingancin sel na hydroxyl. Sassan Maɓallin kamar danko, rarrabuwa, danshi ciki, ana kula da haɓakawa a kai a kai.
Aikace-aikace:
Magana: Amfani da wakilin Thickening, da goge-goge, da kuma tsayayye a cikin tsari kamar Allunan, dakatarwa, da maganin shafawa.
Kayan kwalliya: Ba da danko da zane-zane zuwa samfuran kamar mayu, lotions, da shamfu.
Paints da Coftings: Ayukan da ke aiki a matsayin mai kauri mai kauri da na kwarya, inganta kaddarorin aikace-aikace da kwanciyar hankali.
Masana'antar Abinci: Ayyuka azaman Thickener, mai tsafta, da emulsifier a cikin samfuran abinci iri daban-daban.
Shirye-shiryen sel na sel na sel ya ƙunshi jerin abubuwan ƙwayoyin cuta da na inji da nufin gyaran pellulose don gabatar da ƙungiyoyin Hydroxyl. Kowane mataki, daga tsarkakakken gwaya zuwa bushewa, yana da mahimmanci wajen tantance ingancin ingancin da aikin samfurin ƙarshe. Pelluly Preal Palmal din ya sanya shi kayan masarufi mai mahimmanci ya sanya shi mai mahimmanci a cikin masana'antu, nuna mahimmancin abubuwan da ake buƙata don biyan takamaiman buƙatun aikace-aikace daban-daban.
Lokaci: Mayu-28-2024