Omunye umehluko omkhulu phakathi kodaka olomile nodaka lwendabuko ukuthi udaka olomile lulungiswa ngenani elincane lezithasiselo zamakhemikhali. Ukwengeza uhlobo olulodwa lwezithako odakeni olomile kubizwa ngokuthi ukuguqulwa okuyisisekelo, ukwengeza izithasiselo ezimbili noma ngaphezulu kuwukuguqulwa kwesibili. Izinga lodaka olomile lincike ekukhethweni okulungile kwezingxenye kanye nokuxhumana nokuhambisana kwezingxenye ezihlukahlukene. Izithasiselo zamakhemikhali ziyabiza futhi zinethonya elikhulu ezindaweni zodaka olomile. Ngakho-ke, ekukhetheni izithasiselo, inani lezithasiselo kufanele libe endaweni yokuqala. Okulandelayo isingeniso esifushane sokukhethwa kwezithasiselo zamakhemikhali i-cellulose ether.
I-Cellulose ether eyaziwa nangokuthi i-rheological modifier uhlobo lwengxube esetshenziselwa ukulungisa izakhiwo ze-rheological zodaka olusha oluxubile, olucishe lusetshenziswe kulo lonke uhlobo lodaka. Izakhiwo ezilandelayo kufanele zicatshangelwe lapho kukhethwa izinhlobonhlobo kanye nenani elingeziwe:
(1) Ukugcinwa kwamanzi emazingeni okushisa ahlukene;
(2) ukuqina, i-viscosity;
(3) Ubudlelwano phakathi kokuvumelana nezinga lokushisa, kanye nomthelela wokungaguquguquki lapho kukhona i-electrolyte;
(4) uhlobo kanye nezinga le-etherification;
(5) ukuthuthukiswa kwe-thixotropy kanye nekhono lokubeka udaka (okudingekile ukuze udaka olumbozwe endaweni eqondile);
(6) Izinga lokuhlakazwa, isimo kanye nokuqedwa kokuqedwa.
Ngaphezu kokwengeza i-cellulose ether odakeni olomile (njenge-methyl cellulose ether), futhi ingangeza i-vinyl polyvinyl acid ester, okungukuthi, ukuguqulwa kwesibili. I-inorganic binder odakeni (usimende, i-gypsum) ingaqinisekisa amandla acindezelayo aphezulu, kodwa inomthelela omncane emandleni aqinile namandla okugoba. I-Vinyl polyvinyl ester yakha ifilimu enwebekayo emgodini wamatshe usimende, yenza udaka lungathwala umthwalo omkhulu wokuguga, luthuthukise ukumelana nokugqoka. Kuye kwafakazelwa ngomkhuba ukuthi ngokwengeza amanani ahlukene e-methyl cellulose ether kanye ne-vinyl polyvinyl ester odakeni olomile, udaka oluqinile lwe-coating plate bonding, udaka olukhonkolo, udaka lokukhonkolo oluhlobisa, udaka lwamatshe lukakhonkolo olunomoya nodaka oluzilinganiselayo lwephansi elithelayo. Ukuxuba kokubili akukwazi nje ukuthuthukisa ikhwalithi yodaka, kodwa futhi kuthuthukise kakhulu ukusebenza kahle kokwakhiwa.
Ekusetshenzisweni okusebenzayo, ukuze kuthuthukiswe ukusebenza okuphelele, kuyadingeka ukusebenzisa ama-admixtures amaningi. Umeshi ongcono kakhulu phakathi kwengxenye yokwengeza, uhla lwesilinganiso esifanele, isilinganiso, kusuka ezicini ezahlukene kungaba nomphumela othize wokuthuthukisa ukusebenza kodaka, kodwa imiphumela yokuguqulwa kodaka lapho isetshenziswa iyodwa ilinganiselwe, ngezinye izikhathi ibe nomphumela omubi, njengefayibha eyodwa ene-doped, ekwandiseni ukunamathela kodaka, ukunciphisa izinga lokuhlukanisa ngesikhathi esifanayo, nokho, okuholela ekusetshenzisweni kwamanzi kanye nodaka olukhulu. ukwehla kwamandla okucindezela. Lapho i-ejenti yokungenisa umoya ingeziwe, izinga le-delamination yodaka kanye nokusetshenziswa kwamanzi kungancishiswa kakhulu, kodwa amandla okucindezela odaka azokwehla ngenxa yamabhamuza amaningi. Thuthukisa udaka lwamatshe ukuze usebenze kakhulu, ngenkathi ugwema ukulimala kwenye indawo, amandla okuvumelana kodaka lwamatshe, izinga lokuhlukanisa futhi uhlangabezane nezidingo zobunjiniyela kanye nemithethonqubo yokucaciswa kwezobuchwepheshe, ngesikhathi esifanayo, ungasebenzisi i-lime putty, ukonga usimende, ukuvikelwa kwemvelo, njll. sebenzisa izingxube ezihlanganisiwe.
Isikhathi sokuthumela: Apr-29-2022