Hydroxyethyl Cellulose (HEC) waa polymer aan biyo lahayn oo si weyn loogu isticmaalo dahaarka, qurxinta, daawada, cuntada, sameynta waraaqaha, qodista saliidda iyo goobaha kale ee warshadaha. Waa isku-darka ether-ka cellulose ee laga helo etherification-ka cellulose, kaas oo hydroxyethyl uu beddelo qayb ka mid ah kooxaha hydroxyl ee cellulose. Sifooyinka jireed iyo kiimikada ee hydroxyethyl cellulose waxay ka dhigayaan mid ka mid ah qaybaha muhiimka ah ee dhumuc-saareyaasha, wakiilada jelling-ka, emulsifiers-ka iyo xasiliyeyaasha.
Barta karkaraya ee cellulose hydroxyethyl
Hydroxyethyl cellulose waa polymer molecular sare leh oo leh miisaan molecular oo weyn, barta karkarinteeda gaarka ahna ma aha mid fudud in la go'aamiyo sida iskudhisyada molecular yar yar. Codsiyada wax ku oolka ah, walxaha molecular sare sida hydroxyethyl cellulose ma laha dhibic karkarin cad. Sababtu waxay tahay in walxaha noocaas ahi ay burburin doonaan inta lagu jiro kuleylinta, halkii ay si toos ah uga beddeli lahaayeen dareere ilaa gaas iyada oo loo marayo isbeddelka marxaladda sida walxaha molecular yar yar ee caadiga ah. Sidaa darteed, fikradda "barta karkarinta" ee hydroxyethyl cellulose ma khuseyso.
Guud ahaan, marka hydroxyethyl cellulose lagu kululeeyo heerkul sare, marka hore waxay ku milmi doontaa biyo ama dareere dabiici ah si ay u sameyso xal colloidal ah, ka dibna heerkul sare, silsiladda polymer-ka ayaa bilaabi doonta inay jabto oo ugu dambeyntii si kulul u burburto, iyadoo sii deynaysa molecules yar yar sida biyaha, kaarboon laba ogsaydh iyo walxo kale oo isbeddela iyada oo aan la marin habka karinta caadiga ah. Sidaa darteed, hydroxyethyl cellulose ma laha dhibic karkaraya oo cad, laakiin heerkul kala go'ay, kaas oo ku kala duwan miisaankiisa molecular iyo heerka beddelka. Guud ahaan, heerkulka kala go'a kulaylka ee hydroxyethyl cellulose badanaa waa ka sarreeyaa 200°C.
Xasiloonida kulaylka ee cellulose hydroxyethyl
Hydroxyethyl cellulose waxay leedahay xasillooni kiimiko oo wanaagsan heerkulka qolka, waxay u adkeysan kartaa noocyo gaar ah oo deegaan aashito iyo alkali ah, waxayna leedahay iska caabin kulayl oo gaar ah. Si kastaba ha ahaatee, marka heerkulku aad u sarreeyo, gaar ahaan marka aysan jirin dareereyaal ama dejiyayaal kale, silsiladaha polymer-ka ayaa bilaabi doona inay jabaan sababtoo ah ficilka kulaylka. Habkan kala-goynta kulaylka lama socdo karkarin cad, laakiin waa jab tartiib tartiib ah oo silsilad ah iyo falcelin fuuq-bax ah, sii daaya walxaha kacsan ugu dambayntiina ka tagaya alaabada kaarboonaysan.
Codsiyada warshadaha, si looga fogaado burburka uu keeno heerkulka sare, hydroxyethyl cellulose badanaa lama soo gaadhsiiyo jawi ka sarreeya heerkulka burburka. Xitaa codsiyada heerkulka sare (sida isticmaalka dareerayaasha qodista shidaalka), hydroxyethyl cellulose waxaa badanaa loo isticmaalaa iyadoo lala kaashanayo agabyo kale si loo xoojiyo xasilloonida kulaylka.
Isticmaalka hydroxyethyl cellulose
In kasta oo hydroxyethyl cellulose uusan lahayn dhibic karkaraya oo cad, haddana milmideeda iyo sifooyinka dhumucdeeda ayaa ka dhigaya mid si weyn looga isticmaalo warshado badan. Tusaale ahaan:
Warshadaha dahaarka: hydroxyethyl cellulose waxaa loo isticmaali karaa sidii dhumuc-dhereye si loo hagaajiyo rheology-ga dahaarka, looga hortago roobabka iyo in la hagaajiyo heerka iyo xasilloonida dahaarka.
Qurxinta iyo kiimikooyinka maalinlaha ah: Waa maaddooyin muhiim ah oo ku jira saabuuno badan, alaabada daryeelka maqaarka, shaambooyada iyo cadayga, kuwaas oo siin kara badeecada mid isku dheelitiran, qoyaan iyo xasillooni sax ah.
Warshadaha dawooyinka: Diyaarinta dawooyinka, hydroxyethyl cellulose waxaa badanaa loo isticmaalaa soo saarista kiniiniyada sii daaya ee joogtada ah iyo dahaarka si loo xakameeyo heerka sii daynta daawooyinka.
Warshadaha cuntada: Sida dhumuc-dheereeye, xasiliye iyo emulsifier, hydroxyethyl cellulose waxaa sidoo kale loo isticmaalaa cuntada, gaar ahaan jalaatada, jelly iyo maraqa.
Qodista Saliidda: Qodista goobaha saliidda, hydroxyethyl cellulose waa qayb muhiim ah oo ka mid ah dareeraha qodista, kaas oo kordhin kara daxalka dareeraha, xasilin kara derbiga ceelka iyo yareyn kara khasaaraha dhoobada.
Sida walxo polymer ah, hydroxyethyl cellulose ma laha dhibic karkaraya oo cad sababtoo ah waxay ku burburtaa heerkul sare halkii ay ka ahaan lahayd ifafaalaha karkaraya ee caadiga ah. Heerkulka kala-baxa kulaylka badanaa wuxuu ka sarreeyaa 200°C, iyadoo ku xiran miisaankiisa molecular iyo heerka beddelka. Si kastaba ha ahaatee, hydroxyethyl cellulose waxaa si weyn loogu isticmaalaa dahaarka, qurxinta, daawada, cuntada iyo batroolka sababtoo ah dhumucdiisa, jelling, emulsifying iyo stamina. Codsiyadan, badanaa waxaa laga fogaadaa in la soo bandhigo heerkul aad u sarreeya si loo hubiyo waxqabadkiisa iyo xasilloonidiisa.
Waqtiga boostada: Oktoobar-23-2024