HydroxyethylcelluloseHECwaa polymer aan biyo-ku-milmi karin oo ku milma biyaha kulul iyo kuwa qabow labadaba. Taxanaha Hydroxyethylcellulose HEC wuxuu leeyahay noocyo badan oo viscosities ah, xalalka biyaha-ku-milma ahna dhammaantood waa dareere aan ahayn Newtonian.
Hydroxyethyl cellulose waa wax lagu daro oo lagama maarmaan u ah wax soo saarka kiimikada maalinlaha ah. Kaliya ma hagaajin karto daxalka dareeraha ama emulsion-ka qurxinta, laakiin sidoo kale waxay hagaajin kartaa kala firdhinta iyo xasilloonida xumbo.
faa'iido:
1. Waxay leedahay fuuq-celin aad u wanaagsan.
2. Waxay leedahay isku dheelitirnaan iyo buuxnaan weyn.
3. Hanti aad u fiican oo sameynta filimada ah.
4. Waxay leedahay waxqabad kharash aad u sarreeya.
5. Waxay leedahay heer aad u fiican oo beddel ah si loo hubiyo xasilloonida muddada dheer ee ka hortagga caariyaysiga badeecada.
Shahaadada Polymerization:
Waxaa jira saddex kooxood oo hydroxyl ah oo ku jira unug kasta oo anhydroglucose ah oo ku jira cellulose, kaas oo lagu daaweeyo alkali xalka sodium hydroxide ee biyaha si loo helo cusbo sodium cellulose ah, ka dibna waxaa la mariyaa falgalka etherification iyadoo la adeegsanayo ethylene oxide si loo sameeyo hydroxyethyl cellulose ether. Inta lagu guda jiro isku-darka hydroxyethyl cellulose, ethylene oxide waxay beddeli kartaa kooxaha hydroxyl ee ku jira cellulose, waxayna mari kartaa falgal polymerization silsilad ah oo ay la sameeyaan kooxaha hydroxyl ee kooxaha la beddelay.
Hydroxyethylcellulose waxay leedahay sifooyin fuuq-celin oo aad u wanaagsan. Xalkeeda biyaha waa siman yahay oo isku mid ah, oo leh dareere wanaagsan iyo simitaan. Sidaa darteed, qurxinta ay ku jiraan hydroxyethyl cellulose waxay leeyihiin isku-dheelitirnaan iyo buuxnaan wanaagsan weelka, waxayna si fudud ugu faaftaa timaha iyo maqaarka marka la mariyo. Si ballaaran ayaa loogu isticmaalaa qaboojiyeyaasha, dhaqidda jirka, saabuunta dareeraha ah, jelka xiirashada iyo xumbo, daawada cadayga, cadayga wasakhda adag ee ka hortagga dhididka, unugyada (carruurta iyo dadka waaweyn), jelka saliidaynta.
Marka laga soo tago xakamaynta dareeraha,cellulose hydroxyethylwuxuu leeyahay sifooyin aad u fiican oo sameynta filimada ah. Filimka la sameeyay waxaa la hubaa inuu ku jiro xaalad dhammaystiran oo ka hooseysa sawirka muraayadaha 350x iyo 3500x, wuxuuna keenaa dareen maqaar oo siman oo aad u fiican marka la mariyo qurxinta.
Waqtiga boostada: Abriil-25-2024