Omunye wemehluko omkhulu phakathi kodaka oluxutshwe okomile nodaka lwendabuko ukuthi udaka oluxutshwe okomile luguqulwa ngenani elincane lezithasiselo zamakhemikhali. Ukwengeza isithasiselo esisodwa kudaka oluyimpuphu eyomile kubizwa ngokuthi ukuguqulwa okuyinhloko, ukwengeza izithasiselo ezimbili noma ngaphezulu kubizwa ngokuthi ukuguqulwa kwesibili. Ikhwalithi yodaka oluyimpuphu eyomile incike ekukhetheni okufanele kwezingxenye kanye nokuhlanganiswa kanye nokuhambisana kwezingxenye ezahlukahlukene. Ngoba izithasiselo zamakhemikhali zibiza kakhulu, futhi zinomthelela omkhulu ekusebenzeni kodaka oluyimpuphu eyomile. Ngakho-ke, lapho ukhetha izithasiselo, inani lezithasiselo kufanele linikezwe kuqala. Okulandelayo isingeniso esifushane sendlela yokukhetha i-chemical additive cellulose ether.
I-Cellulose ether ibizwa nangokuthi i-rheology modifier, ingxube esetshenziselwa ukulungisa izakhiwo ze-rheological ze-mortar esanda kuhlanganiswa, futhi isetshenziswa cishe kuzo zonke izinhlobo ze-mortar. Izakhiwo ezilandelayo kufanele zicatshangelwe lapho ukhetha uhlobo lwayo kanye nomthamo:
(1) Ukugcinwa kwamanzi emazingeni okushisa ahlukene;
(2) Umphumela wokujiya, ukujiya;
(3) Ubudlelwano phakathi kokungaguquguquki kanye nokushisa, kanye nomthelela ekungaguquguquki lapho kukhona i-electrolyte;
(4) Uhlobo kanye nezinga lokushintshashintsha kwe-ether;
(5) Ukuthuthukiswa kwe-thixotropy yesimende kanye nekhono lokuyibeka (lokhu kuyadingeka ukuze isimende sidwetshwe ezindaweni eziqondile);
(6) Isivinini sokuhlakazwa, izimo kanye nokuphelela kokuhlakazwa.
Ngaphezu kokwengeza i-cellulose ether (njenge-methyl cellulose ether) ku-dry powder mortar, i-polyvinyl acid vinyl ester nayo ingangezwa, okungukuthi, ukuguqulwa kwesibili. Ama-inorganic binders (usimende, i-gypsum) ku-mortar angaqinisekisa amandla aphezulu okucindezela, kodwa anomthelela omncane emandleni okudonsa kanye namandla okuguquguquka. I-Polyvinyl acetate yakha ifilimu enwebekayo ngaphakathi kwezimbobo zetshe lesamente, okwenza i-mortar imelane nemithwalo ephezulu yokuguquguquka futhi ithuthukise ukumelana nokuguguleka. Umkhuba ukhombisile ukuthi ukwengeza amanani ahlukene e-methyl cellulose ether kanye ne-polyvinyl acid vinyl ester ku-dry powder mortar kungalungisa i-thin-layer smearing plate bonding mortar, i-plastering mortar, i-decorative painting mortar, kanye ne-masonry mortar yamabhulokhi ekhonkrithi avuvukile kanye ne-self-leveling mortar yokuthela phansi, njll. Ukuxuba lokhu okubili akugcini nje ngokuthuthukisa ikhwalithi ye-mortar, kodwa futhi kuthuthukisa kakhulu ukusebenza kahle kokwakha.
Ekusetshenzisweni okusebenzayo, ukuze kuthuthukiswe ukusebenza okuphelele, kuyadingeka ukusebenzisa izithasiselo eziningi ngokuhlanganiswa. Kukhona isilinganiso esifanele sokufanisa phakathi kwezithasiselo. Uma nje ububanzi bomthamo kanye nesilinganiso kufanelekile, zingathuthukisa ukusebenza kodaka oluvela ezicini ezahlukene. Kodwa-ke, uma lusetshenziswa lodwa, umphumela wokuguqulwa kodaka ulinganiselwe, futhi ngezinye izikhathi ngisho nemiphumela emibi, njengokwengeza i-cellulose yodwa, ngenkathi kwandiswa ukuhlangana kodaka futhi kunciphisa izinga lokuhlukanisa, kwandisa kakhulu ukusetshenziswa kwamanzi kodaka futhi kuligcine ngaphakathi kwe-slurry, okuholela ekunciphiseni okukhulu kwamandla okucindezela; Uma kuxutshwe ne-ejenti yokufaka umoya, yize izinga lokuhlukanisa kodaka lingancishiswa kakhulu, futhi ukusetshenziswa kwamanzi nakho kuncishiswa kakhulu, kodwa amandla okucindezela kodaka azothambekela ekwehleni ngenxa yamabhamuza amaningi omoya. Ukuze kuthuthukiswe ukusebenza kodaka oluqinile ngezinga elikhulu, futhi ngesikhathi esifanayo kugwenywe ukulimala kwezinye izakhiwo zodaka, ukuvumelana, ukubekwa kanye namandla kodaka oluqinile kumele kuhlangabezane nezidingo zephrojekthi kanye nemininingwane yobuchwepheshe efanele. Ngesikhathi esifanayo, akukho kusetshenziswa i-lime paste, okusindisa. Ukuze kusetshenziswe usimende, ukuvikelwa kwemvelo, njll., kubalulekile ukuthatha izinyathelo eziphelele, ukuthuthukisa nokusebenzisa izingxube ezihlanganisiwe ngokombono wokunciphisa amanzi, ukwanda kwe-viscosity, ukugcinwa kwamanzi kanye nokuqina, kanye nokufakwa kwepulasitiki emoyeni.
Isikhathi sokuthunyelwe: Meyi-08-2023