Omunye umehluko omkhulu phakathi kodaka oluxutshwe okomile kanye nodaka lwendabuko ukuthi udaka oluxutshwe okomile lulungiswa ngenani elincane lezithasiselo zamakhemikhali.Ukwengeza isithako esisodwa odakeni lwempushana kubizwa ngokuthi ukuguqulwa okuyisisekelo, ukwengeza izithasiselo ezimbili noma ngaphezulu kubizwa ngokuthi ukuguqulwa kwesibili.Izinga le-powder mortar eyomile lincike ekukhethweni okulungile kwezingxenye kanye nokuxhumana nokumataniswa kwezingxenye ezihlukahlukene.Ngoba izithasiselo zamakhemikhali zibiza kakhulu, futhi zinomthelela omkhulu ekusebenzeni kwe-powder mortar eyomile.Ngakho-ke, lapho ukhetha izithasiselo, inani lezithako kufanele linikezwe kuqala.Okulandelayo isingeniso esifushane sendlela yokukhetha ye-chemical additive cellulose ether.
I-Cellulose ether ibizwa nangokuthi i-rheology modifier, ingxube esetshenziselwa ukulungisa izakhiwo ze-rheological zodaka olusanda kuxutshwa, futhi isetshenziswa cishe kuzo zonke izinhlobo zodaka.Izakhiwo ezilandelayo kufanele zicatshangelwe lapho kukhethwa izinhlobo zayo kanye nomthamo:
(1) Ukugcinwa kwamanzi emazingeni okushisa ahlukene;
(2) Ukuqina komphumela, i-viscosity;
(3) Ubudlelwano phakathi kokuvumelana nezinga lokushisa, kanye nomthelela wokungaguquguquki lapho kukhona i-electrolyte;
(4) Ifomu nezinga le-etherification;
(5) Ukuthuthukiswa kwe-thixotropy yodaka kanye nekhono lokubeka (lokhu kuyadingeka ukuze udaka olupendwe ezindaweni eziqondile);
(6) Isivinini sokuqedwa, izimo kanye nokuphelela kokuqedwa.
Ngaphezu kokwengeza i-cellulose ether (njenge-methyl cellulose ether) ku-powder mortar omile, i-polyvinyl acid vinyl ester nayo ingafakwa, okungukuthi, ukuguqulwa kwesibili.Izibophezelo ze-inorganic (usimende, i-gypsum) odakeni zingaqinisekisa amandla acindezelayo aphezulu, kodwa zibe nomthelela omncane emandleni aqinile namandla okuguquguquka.I-Polyvinyl acetate yakha ifilimu enwebekayo ngaphakathi kwezimbotshana zetshe likasimende, okwenza udaka lukwazi ukumelana nemithwalo ephezulu yokuguga futhi luthuthukise ukumelana nokugqoka.Ukuzijwayeza kufakazele ukuthi ukwengeza amanani ahlukene e-methyl cellulose ether kanye ne-polyvinyl acid vinyl ester odakeni lwempushana eyomile kungalungisa udaka lwepuleti lokugcoba elithambile, udaka lokuplasta, udaka lokuhlobisa lokupenda, nodaka lwamatshe lamabhulokhi kakhonkolo afakwa umoya Nodaka oluzilinganisa ukuze ukuthululela phansi, njll Ukuxuba kokubili akukwazi nje ukuthuthukisa ikhwalithi yodaka, kodwa futhi kuthuthukise kakhulu ukusebenza kahle kokwakhiwa.
Ekusetshenzisweni okusebenzayo, ukuze kuthuthukiswe ukusebenza okuphelele, kuyadingeka ukusebenzisa izithasiselo eziningi ngokuhlanganiswa.Kukhona isilinganiso esifanele sokufanisa phakathi kwezithasiselo.Inqobo nje uma ububanzi bomthamo nesilinganiso kufanelekile, zingathuthukisa ukusebenza kodaka kusuka ezicini ezihlukene.Kodwa-ke, uma isetshenziswa iyodwa, umphumela wokuguqulwa odakeni unomkhawulo, futhi ngezinye izikhathi ngisho nemiphumela Emibi, njengokwengeza i-cellulose yedwa, ngenkathi ukwandisa ukuhlangana kodaka futhi kunciphisa izinga le-delamination, kwandisa kakhulu ukusetshenziswa kwamanzi odaka futhi yigcine ngaphakathi kwe-slurry, okuholela ekunciphiseni okukhulu kwamandla okucindezela;Uma ixubene ne-ejenti yokungenisa umoya, nakuba izinga le-stratification lodaka lingancishiswa kakhulu, futhi ukusetshenziswa kwamanzi kubuye kuncishiswe kakhulu, kodwa amandla okucindezela odaka azovame ukuncipha ngenxa yamabhamuza omoya amaningi.Ukuze kuthuthukiswe ukusebenza kodaka lwamatshe ngezinga elikhulu kakhulu, futhi ngesikhathi esifanayo ugweme ukulimala kwezinye izakhiwo zodaka, ukuvumelana, ukubekwa kanye namandla odaka lwamatshe kufanele kuhlangabezane nezidingo zephrojekthi kanye nobuchwepheshe obufanele. imininingwane.Ngasikhathi sinye, akukho namathisela we-lime osetshenziswayo, ukonga Ngosimende, ukuvikelwa kwemvelo, njll., kuyadingeka ukuthatha izinyathelo ezibanzi, ukuthuthukisa nokusebenzisa izixube eziyinhlanganisela ngokwemibono yokunciphisa amanzi, ukwanda kwe-viscosity, ukugcinwa kwamanzi nokuqina, kanye plasticization air-entraining.
Isikhathi sokuthumela: May-08-2023