Kwenziwa iHydroxyethyl Cellulose

I-Hydroxyethyl cellulose (HEC) ngokuqhelekileyo iveliswa ngokusabela kweekhemikhali ezilawulwayo phakathi kwe-cellulose kunye ne-ethylene oxide, ilandelwa yi-hydroxyethylation. Inkqubo ibandakanya amanyathelo amaninzi, kuquka:

1. Ukulungiswa kweCellulose: Inkqubo yokuvelisa iqala ngokuhlukaniswa kwe-cellulose kwimithombo ehlaziyiweyo efana ne-pulp yokhuni, i-cotton linters, okanye ezinye iifayili zezityalo. I-cellulose ngokuqhelekileyo ihlanjululwe kwaye icutshungulwe ukususa ukungcola kunye ne-lignin, okukhokelela kwi-cellulose ephuculwe kakhulu.
2. I-Ethoxylation: Kule nyathelo, i-cellulose ecocekileyo iphathwa nge-ethylene oxide phambi kwe-alkaline catalysts phantsi kweemeko ezilawulwayo. Iimolekyuli ze-ethylene oxide zongeza kumaqela e-hydroxyl (-OH) ye-cellulose polymer chain, okubangelwa ukuqaliswa kwamaqela e-ethoxy (-OCH2CH2-) kwi-cellulose backbone.
3. I-Hydroxyethylation: Ukulandela i-ethoxylation, i-cellulose e-ethoxylated iphinda iphendule nge-ethylene oxide kunye ne-alkali phantsi kweemeko ezilawulwayo ukwazisa amaqela e-hydroxyethyl (-OCH2CH2OH) kwikhonkco le-cellulose. Le mpendulo ye-hydroxyethylation iguqula iipropati zeselulosi, inika ukunyibilika kwamanzi kunye ne-hydrophilicity kwi-polymer.
4. Ukucocwa kunye nokomisa: I-cellulose ye-hydroxyethylated ihlanjululwa ukuze isuse i-reactants eseleyo, i-catalysts, kunye neemveliso ezivela kumxube wokuphendula. I-HEC ecocekileyo ihlanjululwa, ihluzwe, kwaye yomiswe ukufumana umgubo ocolekileyo okanye iigranules ezifanelekileyo kwizicelo ezahlukeneyo.
5. Ukuhlelwa kunye nokuPakisha: Ekugqibeleni, imveliso ye-HEC ihlelwe ngokusekelwe kwiipropati zayo ezifana ne-viscosity, ubungakanani bamasuntswana, kunye nokucoceka. Ithi ke ipakishwe kwiingxowa, imigqomo, okanye ezinye izikhongozeli ukuze zihanjiswe kwaye zigcinwe.

Inkqubo yokuvelisa inokwahluka kancinane ngokuxhomekeke kwibakala elithile kunye neemfuno zomgangatho wemveliso ye-HEC, kunye neendlela zokwenziwa kweenkampani ezizimeleyo. Amanyathelo okulawula umgangatho asetyenziswa ngokuqhelekileyo kuyo yonke inkqubo yokuvelisa ukuqinisekisa ukuhambelana, ukucoceka, kunye nokusebenza kwemveliso yokugqibela ye-HEC.

I-HEC isetyenziselwa uluhlu olubanzi lwamashishini, kubandakanywa ukwakhiwa, amayeza, ukunakekelwa komntu, kunye nokutya, ngenxa yokuqina kwayo, ukuzinzisa, kunye neendawo zokugcina amanzi.