Hydroxyethyl cellulose (HEC)waa jaale cad ama khafiif ah, aan ur lahayn, aan sun ahayn fayraska ama budada adag, kaas oo lagu diyaariyo falcelinta etherification ee cellulose alkaline iyo ethylene oxide (ama chlorohydrin). Nonionic ethers cellulose milmay. Marka laga soo tago dhumucda, laalidda, xidhitaanka, sabaynta, samaynta filimada, firdhinta, ilaalinta biyaha iyo bixinta kolloid ilaalin ah, waxa ay leedahay sifooyinka soo socda:
1. HEC waxay ku milmi kartaa biyo kulul ama qabow, heerkul sare ama karkaraya iyada oo aan roob lahayn, si ay u leedahay noocyo kala duwan oo milmayn iyo sifooyinka viscosity, iyo gelation non-thermal;
2. Waa non-ionic oo waxay la noolaan kartaa tiro balaadhan oo ah polymers kale oo biyo-milmi kara, surfactants, iyo cusbo. Waa dhumuc weyn oo kolloidal ah oo loogu talagalay xalalka korantada ee xoogga leh;
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 awoodda kolloid ilaalinta ayaa ah kan ugu xooggan. Sababo la xiriira sifooyinka wanaagsan ee dhumucdiisuna, laalista, kala firdhiyey, emulsifying, adhering, film-samaynta, ilaalinta qoyaanka iyo bixinta kolloid ilaalinta, HEC ayaa si weyn loo isticmaalo sahaminta saliidda, dahaarka, dhismaha, daawada, cuntada, dunta, warqad 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 waxyaabaha soo socda la siinayo. ah
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. ah
2. Waa in si tartiib ah loogu shaandheeyo haanta isku dhafka ah, si toos ah ha ugu darin xaddi badan oo ah hydroxyethyl cellulose ama hydroxyethyl cellulose oo samaystay kuusyo iyo kubbado haanta isku dhafka ah. ah
3. Heerkulka biyaha iyo qiimaha PH ee biyaha ayaa xiriir muuqda la leh kala dirida cellulose hydroxyethyl, markaa waa in fiiro gaar ah la bixiyaa. ah
4. Ha ku darin qaar ka mid ah walxaha alkaline isku darka ka hor inta aan lagu diirin budada hydroxyethyl cellulose biyaha dhexdeeda. Kor u qaadista qiimaha PH ka dib kululaynta waxay kaa caawin doontaa milanka. ah
5. Inta suurtogalka ah, ku dar wakiilka anti-fungal sida ugu dhakhsaha badan ee suurtogalka ah. 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. Unugyada hydroxyethyl cellulose ee la daaweeyay ka dib 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: Dec-27-2022