Udaka luyingxube kasimende, isihlabathi namanzi asetshenziswa embonini yezokwakha ukwenza izinto ezahlukahlukene njengokumisa, ukuplasta nokulungisa amathayela. Izinga lodaka libaluleke kakhulu ekuqineni nasekuqineni kwesakhiwo. Okuqukethwe komoya odakeni kudlala indima enkulu ekusebenzeni kodaka. Ukuba khona kwamabhamuza omoya odakeni kuthuthukisa ukusebenza kwawo, kunciphisa ukushwabana nokuqhekeka, futhi kuthuthukise izici zayo zokuvala ukushisa. Ama-cellulose ethers, afana ne-hydroxypropylmethylcellulose (HPMC) kanye ne-methylhydroxyethylcellulose (MHEC), asetshenziswa kabanzi embonini yezokwakha njengezithasiselo zokuthuthukisa ikhwalithi nokusebenza kodaka. Lesi sihloko sidingida umphumela we-cellulose ethers kokuqukethwe komoya kodaka.
Umphumela we-cellulose ether kokuqukethwe komoya kodaka:
Okuqukethwe komoya odakeni kuncike ezicini ezihlukahlukene ezifana nesilinganiso sikasimende wamanzi, isilinganiso sesanti nosimende, isikhathi sokuxuba, nendlela yokuxuba. Ukwengezwa kwe-cellulose ethers odakeni kungathinta kakhulu okuqukethwe komoya wayo. I-HPMC kanye ne-MHEC ama-polymers angama-hydrophilic akwazi ukumunca amanzi futhi ahlakaze ngokulinganayo kungxube yodaka. Zisebenza njengezinciphisi zamanzi futhi zithuthukisa ukusebenza kodaka. Ukwengeza ama-cellulose ethers ekuxubeni kodaka kunciphisa inani lamanzi adingekayo ukuze kuzuzwe ukungaguquguquki okufunayo, ngaleyo ndlela kunciphisa okuqukethwe komoya kudaka.
Kodwa-ke, umphumela wama-cellulose ethers emoyeni we-mortar awubi njalo. Lokhu kuncike kumthamo kanye nohlobo lwe-cellulose ether esetshenzisiwe. Uma isetshenziswa ngenani elifanele, ama-cellulose ethers angakhuphula okuqukethwe komoya ezindongeni ngokwandisa ukuzinza kwawo nokunciphisa ukuhlukaniswa. I-cellulose ether isebenza njenge-stabilizer, engavimbela ngokuphumelelayo ukuwa kwama-pores ngesikhathi sokusetha nokuqina kodaka. Lokhu kuthuthukisa ukuqina namandla odaka.
Esinye isici esithinta okuqukethwe komoya wodaka yindlela efanele yokuxuba. Ukuxuba okomile kwe-cellulose ether equkethe udaka akunconywa ngoba kuzoholela ekuhlanganisweni kwezinhlayiya ze-cellulose ether kanye nokwakheka kwezigaxa odakeni. Kunconywa ukuxuba okumanzi njengoba kuqinisekisa ukuhlakazeka okulinganayo kwe-cellulose ether engxubeni yodaka futhi kuthuthukisa ukusebenza kwayo.
Izinzuzo zokusebenzisa i-cellulose ether odakeni:
Ama-cellulose ether afana ne-HPMC kanye ne-MHEC anikeza izinzuzo ezimbalwa uma esetshenziswa odakeni. Benza ngcono ukusebenza kanye nokunamathela kodaka, banciphise isilinganiso sikasimende wamanzi futhi bakhulise ukungaguquguquki kodaka. Bathuthukisa ukuqina, amandla kanye nokunwebeka kodaka. Ama-cellulose ethers asebenza njengeziqinisi neziqinisi futhi avimbele ukuwohloka kwamabhamuza omoya ngesikhathi sokusetha nokuqinisa udaka. Lokhu kwandisa ukumelana neqhwa, kunciphisa ukushwabana futhi kuthuthukisa ukumelana nokuqhekeka. I-Cellulose ether nayo inezici ezinhle zokugcina amanzi, ngaleyo ndlela ithuthukise ukuphulukiswa nokugeleza kodaka.
Ukufingqa, i-HPMC, i-MHEC namanye ama-cellulose ethers asetshenziswa kabanzi njengezithasiselo embonini yezokwakha ukuze kuthuthukiswe ikhwalithi nokusebenza kodaka. Okuqukethwe komoya kodaka kuyisici esibalulekile esithinta ukusebenza kwayo, futhi ukwengezwa kwe-cellulose ether kungathinta kakhulu okuqukethwe komoya wodaka. Kodwa-ke, umphumela wama-cellulose ethers emoyeni we-mortar awubi njalo. Ama-cellulose ether angakhuphula okuqukethwe komoya odaka futhi athuthukise ukusebenza kwawo uma esetshenziswa ngenani elifanele kanye nezindlela zokuxuba ezifanele. Izinzuzo zokusebenzisa ama-cellulose ethers odakeni zihlanganisa ukusebenza okuthuthukisiwe, ukunamathela, ukungaguquguquki, ukuqina, amandla nokunwebeka kodaka, kanye nokuncipha kokuncipha kanye nokuthuthukiswa kokungazweli kokuqhekeka.
Isikhathi sokuthumela: Aug-22-2023