Hydroxyethyl Cellulose (HEC) waa polymer aan-ionic biyo-milmi leh oo si ballaaran loogu isticmaalo daaha, qurxinta, daawada, cuntada, waraaqaha, qodista saliidda iyo beeraha kale ee warshadaha. Waa unug eter cellulose ah oo lagu helo etherification of cellulose, kaas oo hydroxyethyl bedelay qayb ka mid ah kooxaha hydroxyl ee cellulose. Qalabka jirka iyo kiimikaad ee hydroxyethyl cellulose waxay ka dhigaan mid ka mid ah qaybaha muhiimka ah ee dhumucyada, wakiilada gelling, emulsifiers iyo stabilizers.
Barta karkarinta ee cellulose hydroxyethyl
Hydroxyethyl cellulose waa polymer molecular sare leh oo leh miisaan kelli ah oo weyn, iyo barteeda gaarka ah ee karkaraya maaha mid sahlan in la go'aamiyo sida kuwa isku-dhafka unugyada yaryar. Codsiyada la taaban karo, walxaha molecular ee sarreeya sida hydroxyethyl cellulose ma laha meel cad oo karkaraya. Sababta ayaa ah in walxahan oo kale ay burburaan inta lagu jiro kuleylka, halkii ay si toos ah uga beddeli lahaayeen dareere una beddelan lahaayeen gaas iyada oo loo marayo isbeddelka wejiga sida walxaha yaryar ee caadiga ah. Sidaa darteed, fikradda "barta karkarinta" ee cellulose hydroxyethyl ma aha mid lagu dabaqi karo.
Guud ahaan, marka hydroxyethyl cellulose lagu kululeeyo heerkul sare, waxay marka hore ku milmi doontaa biyaha ama dareeraha organic si ay u sameeyaan xal kolloidal ah, ka dibna heerkulka sare, silsiladda polymer ayaa bilaabi doonta inay jebiso oo ugu dambeyntii kuleyl ahaan u jajabiso, sii daayo molecules yaryar sida biyaha, carbon dioxide iyo walxo kale oo kacsan iyada oo aan la marin habka karkarinta caadiga ah. Sidaa darteed, hydroxyethyl cellulose ma laha meel karkaraya oo cad, laakiin heerkulka burburay, kaas oo ku kala duwan miisaanka kelliga iyo heerka beddelka. Guud ahaan, heerkulka kala-goynta kulaylka ee hydroxyethyl cellulose wuxuu caadi ahaan ka sarreeyaa 200 ° C.
Deganaanshaha kulaylka ee cellulose hydroxyethyl
Hydroxyethyl cellulose waxay leedahay xasilooni kiimikaad oo wanaagsan heerkulka qolka, waxay u adkeysan kartaa noocyo kala duwan oo aashito ah iyo bey'ado alkali ah, waxayna leedahay iska caabin kulayl gaar ah. Si kastaba ha noqotee, marka heerkulku aad u sarreeyo, gaar ahaan maqnaanshaha dareerayaasha ama xasiliyeyaasha kale, silsiladaha polymer waxay bilaabi doonaan inay jebiyaan sababtoo ah ficilka kuleylka. Nidaamkan kala-goynta kulaylka lama socdo karkarin muuqda, laakiin waa silsilad tartiib tartiib ah oo jebinaysa iyo falcelinta fuuqbaxa, sii daynta walxaha kacsan oo ugu dambeyntii ka taga alaabada kaarboonaysan.
Codsiyada warshadaha, si looga fogaado burburka uu keeno heerkulka sare, hydroxyethyl cellulose caadi ahaan uma soo bandhigto deegaan ka sarreeya heerkulkiisa qudhunka. Xataa codsiyada heerkulka sare (sida isticmaalka dareeraha qodista saliidda), hydroxyethyl cellulose waxaa badanaa loo isticmaalaa iyada oo lagu daro walxo kale si kor loogu qaado xasilloonida kuleylka.
Isticmaalka hydroxyethyl cellulose
Inkasta oo hydroxyethyl cellulose aanu lahayn meel karkaraya oo cad, milkiileheeda iyo sifooyinka dhumucdooda ayaa ka dhigaya mid si ballaaran looga isticmaalo warshado badan. Tusaale ahaan:
Warshadaha dahaarka: hydroxyethyl cellulose waxaa loo isticmaali karaa sidii dhumuc si ay u caawiso hagaajinta rheology ee daahan, ka hortagga roobka iyo hagaajinta heerka iyo xasiloonida daahan.
Waxyaabaha la isku qurxiyo iyo kiimikooyinka maalinlaha ah: Waa qayb muhiim ah oo ka mid ah saabuunta badan, alaabta daryeelka maqaarka, shaambooyinka iyo dawada cadayga, kuwaas oo siin kara sheyga dareenka saxda ah, qoyaanka iyo xasiloonida.
Warshadaha dawooyinka: Diyaargarowga dawooyinka, hydroxyethyl cellulose waxaa badanaa loo isticmaalaa soo saarista kiniiniyada sii-daynta joogtada ah iyo dahaarka si loo xakameeyo heerka siideynta daawooyinka.
Warshadaha cuntada: Sida dhumuc weyn, xasiliye iyo emulsifier ahaan, hydroxyethyl cellulose waxa kale oo loo isticmaalaa cuntada, gaar ahaan jalaatada, jelly iyo suugada.
Qodista saliidda: Qoditaanka goobta saliidda, hydroxyethyl cellulose waa qayb muhiim ah oo ka mid ah dareeraha qodista, taas oo kordhin karta viscosity ee dareeraha, xasilinta derbiga ceelka waxayna yareyn kartaa luminta dhoobada.
Maaddada polymer-ka ah, hydroxyethyl cellulose ma laha meel karkaraya oo cad sababtoo ah waxay ku qudhmaysaa heerkul sare halkii ay ka ahaan lahayd ifafaale karkaraya. Heerkulkeeda kala-goynta kulaylku badanaa waa ka sarreeyaa 200 ° C, taas oo ku xidhan miisaankiisa kelli iyo heerka beddelka. Si kastaba ha ahaatee, hydroxyethyl cellulose waxaa si weyn loogu isticmaalaa daahan, qurxinta, daawada, cuntada iyo batroolka ay sabab u tahay dhumucdiisuna aad u fiican, gelling, emulsifying iyo guryaha xasilinta. Codsiyadan, sida caadiga ah waxaa laga ilaaliyaa inay la kulmaan heerkul aad u sarreeya si loo hubiyo waxqabadkeeda iyo xasilloonida.
Waqtiga boostada: Oct-23-2024