Omunye womehluko omkhulu phakathi kodaka oluhlanganisiwe nodaka lwendabuko ukuthi udaka oluhlanganisiwe luguqulwa ngenani elincane lezithasiselo zamakhemikhali. Ukungeza isengezo esisodwa ku-Dry Pow Pottar kubizwa ngokuthi ukuguqulwa okuyisisekelo, engeza izithasiselo ezimbili noma ngaphezulu zibizwa ngokuthi ukuguqulwa kwesibili. Izinga le-powder eyomile lincike ekukhetheni okulungile kwezakhi kanye nokuxhumana nokuqhathaniswa kwezakhi ezahlukahlukene. Ngoba izengezo zamakhemikhali zibiza kakhulu, futhi zinomthelela omkhulu ekusebenzeni kodaka olomile lwempuphu. Ngakho-ke, lapho ukhetha izengezo, inani lezengezo kufanele linikezwe kuqala. Okulandelayo ukwethulwa okufushane kwendlela yokukhetha yamakhemikhali we-celmulaose ether.
I-Cellulose Ether ibizwa nangokuthi i-Rheology modifier, i-admatic esetshenziselwa ukulungisa izakhiwo zesimbozo sodaka olusanda kuxutshwa, futhi isetshenziswa cishe kuzo zonke izinhlobo zodaka. Izakhiwo ezilandelayo kufanele zibhekwe lapho zikhetha izinhlobonhlobo zalo kanye nomthamo:
(1) Ukugcinwa kwamanzi emazingeni okushisa ahlukahlukene;
(2) Umphumela wokuqina, ukubonakala;
(3) ubudlelwano phakathi kokuvumelana nokungaguquguquki kanye nokushisa, kanye nethonya ekuguquguqukeni phambi kwe-electrolyte;
(4) Ifomu nezinga lokuthezeka;
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(6) Ijubane lokuchithwa, imibandela nokuphelela kokuchithwa.
Ngaphezu kokungeza i-cellulose ether (efana ne-methyl cellulose ether) ukuze owesilisa osomile udaka, i-polyvinyl acid vinyl ester nayo ingangezwa, okungukuthi, ukuguqulwa kwesibili. Ama-Inorganic Binders (usimende, i-gypsum) kudaka angaqinisekisa amandla aphezulu acindezela, kepha anethonya elincane emandleni ashubile namandla aguqukayo. I-Polyvinyl Acetate yakha ifilimu elastiki phakathi kwama-pores etsheni lesikhumba, okwenza udaka ukuze abekezelele imithwalo emibi kakhulu nokwenza ngcono ukumelana nokugqoka. Ukuzijwayeza kufakazele ukuthi kunezela amanani ahlukile we-methyl cellulose ether ne-polyvinyl acid vinyl ester eyomile yodaka ngodaka, udaka ngodaka, nodaka lokufaka ngodaka lwamakhonkolo olwenziwe ngodaka, kepha nodaka lokuxubana olungakwazi ukuthuthukisa ikhwalithi yodaka, kodwa futhi luthuthukise kakhulu ukwakhiwa Ukusebenza kahle.
Ngohlelo lokusebenza olusebenzayo, ukuze uthuthukise ukusebenza okuphelele, kuyadingeka ukusebenzisa izithasiselo eziningi ngokuhlanganiswa. Kunesilinganiso esifanelekile phakathi kwezithasiselo. Uma nje uhla lwethamali kanye nesilinganiso esifanele, zingathuthukisa ukusebenza kodaka ezicini ezahlukahlukene. Kodwa-ke, lapho kusetshenziswa yedwa, umphumela wokuguqulwa kudaka ulinganiselwe, futhi kwesinye isikhathi ngisho nemiphumela emibi, efana nokuqamba ubumbano wodaka, ngenkathi kukhulisa ukusetshenziswa kwamanzi ngodaka, kuwugcina ngaphakathi kwe-slurry, okuholela ekunciphiseni okukhulu emandleni acindezelekile; Lapho kuxutshwa ne-ejenti yokungena komoya, yize izinga lokuhlanganiswa kodaka kungancishiswa kakhulu, futhi ukusetshenziswa kwamanzi kuncishiswe kakhulu, kepha amandla acindezelwe wodaka azothambekela ngenxa yama-bubble amaningi omoya. Ukuze uthuthukise ukusebenza kodaka lwama-masonry ngasikhathi sinye, futhi ngasikhathi sinye uvikele ukulimaza ezinye izakhiwo zodaka, ukuvumelana, ukuhlela kanye namandla ompompi we-masonry kumele ahlangabezane nezidingo zephrojekthi kanye nokucaciswa kobuchwepheshe okufanele. Ngasikhathi sinye, akukho ukunamathisela kwe-lime okusetshenziswayo, ukonga usimende, ukuvikela imvelo, njll.
Isikhathi sePosi: Meyi-08-2023