Hydroxyethyl cellulose (HEC) waa jaale cad ama khafiif ah, aan ur lahayn, aan sun ahayn fibros ama budo leh oo adag oo lagu diyaariyey etherification of cellulose alkaline iyo ethylene oxide (ama chlorohydrin).Nonionic ethers cellulose milmay.Marka laga soo tago dhumucdi, laalitaan, xidhidh, sabeyn, filim samaynta, kala firdhinta, ilaalinta biyaha iyo bixinta kolloidyada ilaalinta, waxay leedahay sifooyinka soo socda:
1. HEC waxay ku milmaysaa biyo kulul ama qabow, oo kuma soo da'do heerkulka sare ama karkarinta, si ay u leedahay noocyo kala duwan oo milmayn iyo sifooyin viscosity, iyo gelation non-thermal;
2. Ionic aan ahayn lafteedu waxay la noolaan kartaa tiro balaadhan oo ah polymers-ka kale ee biyaha-milmi kara, surfactants iyo cusbada, waana dhumuc weyn oo kolloidal ah oo ka kooban xalal koronto leh oo sarreeya;
3. Awoodda haynta biyuhu waxay laban laab ka badan tahay tan methyl cellulose, waxayna leedahay nidaaminta qulqulka wanaagsan.
4. Marka la barbar dhigo methyl cellulose ee la aqoonsan yahay iyo hydroxypropyl methyl cellulose, awoodda kala firdhisan ee HEC waa tan ugu xun, laakiin kolloid difaac ayaa leh awoodda ugu xooggan.Sababtoo ah HEC waxay leedahay sifooyin wanaagsan oo dhumucdiisuna waxay tahay, hakin, kala firdhiyo, emulsifying, bonding, film-samaynta, ilaalinta qoyaanka iyo bixinta kolloid ilaalinta, waxa si weyn loogu isticmaalay sahaminta saliidda, dahaarka, dhismaha, daawada iyo cuntada, dunta, waraaqaha iyo polymer Polymerization. iyo goobo kale.
Ka taxadaritaan:
Maaddaama dusha lagu daaweeyay hydroxyethyl cellulose ay tahay budo ama cellulose adag, way fududahay in la xakameeyo oo lagu milmo biyaha ilaa inta arrimaha soo socda la xusayo.
1. Kahor iyo ka dib marka lagu daro hydroxyethyl cellulose, waa in si joogto ah loo walaaqaa ilaa xalku si buuxda u hufan yahay oo cad yahay.
2. Waa in si tartiib ah loogu dhex shaandheeyo foosto wax isku qasan, oo si toos ah ha ugu darin hydroxyethyl cellulose oo ka samaysmay burooyin iyo kubbado foosto qaska ah.
3. Heerkulka biyaha iyo qiimaha pH ee biyuhu waxay leeyihiin xidhiidh cad oo la xidhiidha milanka hydroxyethyl cellulose, markaa waa in fiiro gaar ah la siiyaa.
4. Waligaa walxo alkaline ah ha ku darin isku darka ka hor intaanay budada hydroxyethyl cellulose biyaha diirin.Kor u qaadista qiimaha PH ka dib kululaynta waxay caawinaysaa kala dirida.
5. Inta suurtogalka ah, ku dar wakiilada fangas sida ugu dhakhsaha badan ee suurtogalka ah.
6. Marka la isticmaalayo hydroxyethyl cellulose viscosity-sare, fiirsashada khamriga hooyadu waa inuusan ka badnaan 2.5-3%, haddii kale khamriga hooyadu way adkaan doontaa in la xakameeyo.Hydroxyethyl cellulose-ka dambe ee la daaweeyay guud ahaan ma fududa in la sameeyo buro ama goobo, mana samayn doono kolloysyada wareegsan ee aan milmi karin ka dib marka lagu daro biyo.
Waqtiga boostada: Nov-15-2022