Hydroxyethyl cellulose (HEC) waa maaddada polymer-ka ee aan-ionic-ka ahayn ee biyaha-milmi karta oo si ballaaran loogu isticmaalo qurxinta, daawooyinka, rinjiyada, dahaarka, dhismaha iyo beeraha kale. Waxay leedahay dhumuc aad u fiican, ganaax, kala firidhsan, emulsification, filim samaynta, haynta biyaha iyo guryaha kale, sidaas darteed waxa ay noqotay wakiilka muhiimka ah ee warshadaha badan. Si kastaba ha ahaatee, hydroxyethyl cellulose si toos ah loogama helo alaabta dabiiciga ah, laakiin waxaa lagu helaa iyada oo wax ka beddeleysa cellulose dabiiciga ah. Si loo dhammeeyo, si loo fahmo isha dabiiciga ah ee hydroxyethyl cellulose, waxaan marka hore u baahannahay inaan fahamno isha iyo qaabka cellulose.
Ilaha dabiiciga ah ee cellulose
Cellulose waa mid ka mid ah polymers-ka dabiiciga ah ee ugu badan ee dhulka wuxuuna si weyn ugu jiraa gidaarada unugyada dhirta, gaar ahaan dhirta alwaaxa ah, suufka, flax iyo fiilooyinka kale ee dhirta. Waa qayb muhiim ah oo ka mid ah qaab-dhismeedka dhirta waxayna bixisaa xoogga farsamada iyo xasilloonida. Unugga aasaasiga ah ee cellulose waa gulukoos molecule, kaas oo ku xiran β-1,4-glycosidic bonds si loo sameeyo qaab-dhismeedka silsilad dheer. Maaddada polymer-ka dabiiciga ah, cellulose waxay leedahay sifooyin jidheed iyo kiimiko oo aad u fiican, taas oo ka dhigaysa alaabta ceeriin ee muhiimka ah ee kala duwan.
Habka diyaarinta ee hydroxyethyl cellulose
Inkasta oo cellulose lafteedu ay leedahay sifooyin aad u fiican, baaxadda codsigeeda waxay ku kooban tahay xad gaar ah. Sababta ugu weyn ayaa ah in cellulose uu leeyahay milmayn liidata, gaar ahaan milanka xaddidan ee biyaha. Si loo hagaajiyo hantidan, saynisyahannadu waxay si kiimiko ah u beddelaan cellulose si ay u diyaariyaan noocyo kala duwan oo cellulose ah. Hydroxyethyl cellulose waa eter cellulose biyo-milmi leh oo laga helo ethoxylating cellulose dabiiciga ah iyada oo loo marayo falcelinta kiimikada.
Habka diyaarinta gaarka ah, cellulose dabiiciga ah ayaa marka hore lagu milmaa xalalka alkali, ka dibna ethylene oxide ayaa lagu daraa habka falcelinta. Dareen-celinta Ethoxylation ee ethylene oxide iyo kooxaha hydroxyl ee cellulose waxay u dhacdaa inay dhaliso hydroxyethyl cellulose. Wax ka beddelkaani wuxuu kordhiyaa hydrophilicity ee silsiladaha cellulose, taas oo kor u qaadaysa milmayntiisa iyo hantida viscosity ee biyaha.
Ilaha ugu muhiimsan ee alaabta ceeriin
Qalabka dabiiciga ah ee asaasiga ah ee loogu talagalay diyaarinta hydroxyethyl cellulose waa cellulose, iyo ilaha dabiiciga ah ee cellulose waxaa ka mid ah:
Qoryaha: Maadada cellulose-ka ee alwaaxdu aad ayay u sarraysaa, gaar ahaan alwaaxda fidsan iyo caleen-ballaaran, halkaasoo cellulose-ku gaadhi karo 40%-50%. Qoryaha waa mid ka mid ah ilaha ugu muhiimsan ee cellulose ee warshadaha, gaar ahaan waraaqaha samaynta iyo soo saarista unugyada cellulose.
Cudbiga: Cudbigu wuxuu ku dhow yahay inuu ka kooban yahay cellulose saafi ah, iyo maadada cellulose ee ku jirta suufka waxay ka badan tahay 90%. Nadiifintiisa sare awgeed, suufka suufka ayaa inta badan loo isticmaalaa si loogu diyaariyo soosaarayaasha cellulose oo tayo sare leh.
Fiilooyinka dhirta sida flax iyo hemp: Sidoo kale fiilooyinka dhirta waxay qani ku yihiin cellulose, sababtoo ah fiilooyinka dhirta waxay badanaa leeyihiin awood farsamo oo sarreeya, waxay sidoo kale leeyihiin faa'iidooyin gaar ah oo soo saarista cellulose.
Qashinka beeraha: oo ay ku jiraan caws, qamadi, caws galley, iwm. Qalabkani waxa uu ka kooban yahay xaddi gaar ah oo cellulose ah, iyo cellulose waxaa laga soo saari karaa iyaga iyada oo loo marayo hababka daawaynta ku haboon, siinaya il raqiis ah oo la cusboonaysiin karo ee alaabta ceeriin wax soo saarka ee asal ahaan cellulose. .
Meelaha laga isticmaalo hydroxyethyl cellulose
Sababtoo ah sifooyinka gaarka ah ee hydroxyethyl cellulose, waxaa si ballaaran loo isticmaalaa meelo badan. Kuwa soo socda ayaa ah dhowr qaybood oo codsi oo waaweyn:
Warshadaha dhismaha: Hydroxyethyl cellulose waxa si weyn loogu isticmaalaa agabka dhismaha sida dhumuc iyo biyo haynta, gaar ahaan hoobiye sibidhka, gypsum, putty budada iyo agabka kale, kuwaas oo si wax ku ool ah u hagaajin kara dhismaha iyo guryaha ilaalinta biyaha ee alaabta.
Warshadaha kiimikaad ee maalinlaha ah: Wershadaha, alaabta daryeelka maqaarka, shaambooyinka iyo alaabada kale ee kiimikaad ee maalinlaha ah, hydroxyethyl cellulose waxaa loo isticmaalaa dhumuc iyo dejiye si loo hagaajiyo dareenka sheyga iyo xasilloonida.
Rinjiyeynta iyo dahaarka: Warshadaha dahaarka, hydroxyethyl cellulose waxaa loo isticmaalaa dhumuc weyn iyo wakiilka xakamaynta rheology si loo hagaajiyo shaqada dahaarka oo looga fogaado hoos u dhaca.
Goobta dawooyinka: Diyaargarowga dawooyinka, hydroxyethyl cellulose waxaa loo isticmaali karaa sida xidhe, dhumuc iyo hakinta kiniiniyada si loo hagaajiyo sifooyinka sii deynta iyo xasiloonida daawooyinka.
Inkasta oo hydroxyethyl cellulose aysan ahayn walax si dabiici ah u soo baxa, alaabteeda asaasiga ah, cellulose, waxay si ballaaran ugu jirtaa dhirta dabiiciga ah. Iyada oo loo marayo wax ka beddelka kiimikaad, cellulose dabiiciga ah waxaa loo rogi karaa hydroxyethyl cellulose oo leh waxqabad aad u fiican oo lagu dabaqo warshado kala duwan. Dhirta dabiiciga ah sida alwaax, cudbi, flax, iwm. waxay bixiyaan ilo qani ah oo alaabta ceeriin ah oo loogu talagalay soo saarista hydroxyethyl cellulose. Horumarinta sayniska iyo tignoolajiyada iyo korodhka baahida warshadaha, habka wax soo saarka ee hydroxyethyl cellulose ayaa sidoo kale si joogto ah loo hagaajiyaa, waxaana la filayaa in ay muujiso qiimaha gaarka ah ee dhinacyo badan mustaqbalka.
Waqtiga boostada: Oct-23-2024