Ekwenziweni kwezinto zokwakha, ikakhulukazi udaka olomile,I-Cellulose EtherUdlala indima ebalulekile, ikakhulukazi ekukhiqizweni kodaka olukhethekile (udaka olushintshiwe), kuyingxenye ebalulekile. Indima ebalulekile ye-cellulose ether ether ether ngodaka ikakhulukazi umthamo wayo omuhle wokugcina amanzi. Ukutholwa kokugcinwa kwamanzi kwe-cellulose ether kuncike ekufakweni kwamanzi kwesendlalelo sesisekelo, ukwakheka kodaka, ukushuba kongqimba lwesidakamizwa, ukufunwa kwamanzi ngodaka, kanye nesikhathi sokubeka izinto ezibonakalayo.
Ama-masonry amaningi kanye nodaka oluphambayo abambeki kahle amanzi, futhi amanzi kanye nama-slurry azokwehlukanisa ngemuva kwemizuzu embalwa yokuma. Ukugcinwa kwamanzi kungukusebenza okubalulekile kwe-methyl cellulose ether, futhi futhi kungukusebenza okuhlanganiswe nabakhiqizi bakaDotara baseDotara basekhaya, ikakhulukazi labo abaseningizimu nezifunda eziphakeme, naka. Izici ezithinta umphumela wokugcinwa kwamanzi we-powder eyomile afaka inani lokungezelela, ukubonakala, ukubusa kwezinhlayiya, kanye nokushisa kwendawo yokusebenzisa.
Ukugcinwa kwamanzi kweI-Cellulose Etheruqobo luqhamuka ekuhlelekeni nasekudonseni kwamaphethelo we-cellulose ether uqobo. Njengoba sonke sazi, yize i-cellulose molecular chain iqukethe inani elikhulu lamaqembu ah ama-oh ah, ayincibiliki emanzini, ngoba isakhiwo se-cellulose sine-crystallity ephezulu. Ikhono le-hydration lamaqembu we-hydroxyl ilodwa akwanele ukumboza izibopho eziqinile ze-hydrogen kanye ne-van der Waals amabutho phakathi kwama-molecule. Ngakho-ke, kudumba kuphela kepha kungancibiliki emanzini. Lapho kungeniswa esikhundleni esibangeni lamangqamuzana, hhayi nje kuphela ukuthi okufakwayo kubhubhise i-hydrogen chain, kodwa futhi nesibopho se-hydrogen sibhujiswa ngenxa yokwehla kwamaketanga aphansi phakathi kwamaketanga aphansi. Okukhudlwana, kukhudlwana ibanga phakathi kwama-molecule. Okukhulu ibanga. Uma kwenzeka kuba nomphumela wokubhubhisa ama-hydrogen bond, i-cellulose ether iba ukuncibilika kwamanzi ngemuva kokuthi isixazululo se-cellulose sinwebeka futhi kwakha isixazululo sokulungiselela. Lapho izinga lokushisa likhuphuka, i-hydrate ye-polymer yenza buthaka, amanzi phakathi kwamaketanga axoshwa. Lapho umphumela we-dehydration wanele, ama-molecule aqala ukuhlanganisa, akha i-gel yenethiwekhi enezinhlangothi ezintathu bese esongelwa.
Ngokuvamile ukukhuluma, ukukhuphuka okuphezulu, kungcono ukugcinwa kwamanzi. Kodwa-ke, ukukhuphuka kwesisindo kanye nesisindo esiphakeme, ukwehla okuhambisanayo kwe-solubelity yayo kuzoba nomthelela ongemuhle emandleni nasekusebenzeni kokwakha kodaka. Lapho kuphakama i-viscosity, kusobala kakhulu umphumela wokuqina kudaka, kepha akayona ngokuqondile. Lapho esekhuphuka i-viscosity, i-viscous mores owesimende izoba khona, okungukuthi, ngesikhathi sokwakha, kubonakaliswa njengokunamathela ku-scraper kanye nokunamathela okuphezulu kuya engxenyeni engezansi. Kepha akusizi ukwandisa amandla wesakhiwo sodaka olumanzi uqobo. Ngesikhathi sokwakha, ukusebenza kwe-anti-sag akubonakali. Ngokuphambene nalokho, ukubonakala okuphakathi nendawo okuphansi kepha kushintshwe i-methylI-Cellulose AfersIba nokusebenza okuhle kakhulu ekuthuthukiseni amandla wesakhiwo sodaka olumanzi.
Isikhathi sePosi: APR-25-2024