Ukunamathela okususelwa kusimende kusetshenziswa yisicelo esikhulu kunazo zonke sodaka olukhethekile olukhethekile oluhlanganisiwe. Kuluhlobo lokuhlanganiswa kwe-organic noma i-inorganic nge-cementic main ebalulekile futhi inezelwe nge-grading aggregate, i-ejenti yokugcinwa kwamanzi, i-ejenti yamandla e-latex kanye ne-latex powder. ingxube. Ngokuvamile, kudinga kuphela ukuhlanganiswa namanzi. Uma kuqhathaniswa nosimende ojwayelekile kasimende, kungathuthukisa kakhulu amandla ebhondi phakathi kwezinto ezibhekene nempahla ebheke kanye ne-substrate, inendawo enhle yokulwa namanzi futhi imelana nokushisa kwamanzi. Iphinde isetshenziselwe umhlobiso wamathayili odonga lwangaphakathi nangaphandle, amathayili phansi nezinye izinto zokuhlobisa. Isetshenziswa kabanzi ekuhlobisweni kwezindonga zangaphakathi nangaphandle, phansi, izindlu zangasese, amakhishi, njll. Yi-tile esetshenziswa kakhulu. Izinto zokubopha.
Imvamisa, lapho sehlulela ukusebenza kwe-tile anamathela, kufanele sinake amandla aso noma isikhathi sawo sokuvula ngaphezu kokusebenza kwaso ukusebenza kanye nekhono lokulwa nokushaywa. Ngaphezu kokuthinta izakhiwo zeRheological Rubber, njengokubusheleleka kokusebenza, isimo sommese onamathela, njll.
1. Isikhathi esivulekile
NiniI-polymer polymer powderna-I-Cellulose EtherI-Coexist ku-datarter emanzi, amanye amamodeli wedatha akhombisa ukuthi i-ruble powder inamandla amakhulu we-kinetic anamathele kumkhiqizo we-celten hydration, kanti i-cellulose ether ikhona e-interStarterial fluid, okuthinta okuningi. I-viscosity futhi ukubeka isikhathi sodaka. Ukungezwani kwe-cellulose ether kukhulu kunalokho kwe-powder yerabha, kanye nokucebisa okwengeziwe kwe-ether ku-pormula
Ku-datar omanzi, amanzi asosimende athuthumela, i-cellulose ether iyacetshiswa phezu kobuso, futhi ifilimu lakhiwa ebusweni bodaka kungakapheli imizuzu emi-5, lapho amanzi amaningi anciphile kusuka udaka. Ingxenye yokufuduka kungqimba elincanyana lesendlalelo sodaka, ukuvulwa kokuqala kolwelwesi kuncibilikeke ngokwengxenye, futhi ukufuduka kwamanzi kuzoletha okuningi kwe-cellulose ebheke phezulu kodaka.
Ukwakheka kwefilimu kwe-cellulose ether ngaphezulu kodaka kunomthelela omuhle ekusebenzeni kodaka:
Okokuqala, ifilimu eyakhekile incane kakhulu, izoncibilika kabili, ayikwazi ukuncibilika ukuhwamuka kwamanzi, ukunciphisa amandla.
Okwesibili, ifilimu eyakhekile likhulu kakhulu, ukugcwala kwe-cellulose ether ku-monarstar arstitial fluid kuphakeme, futhi i-viscoty inkulu. Lapho i-tile inamathiselwe, akulula ukuphula ifilimu elingaphezulu.
Kulokhu, kuyaqondakala ukuthi ifilimu eyakha izakhiwo ze-cellulose ether inethonya elikhulu ekuqaleni kwesikhathi. Uhlobo lwe-cellulose ether (HPMC,Ipikili, MC, njll.) Futhi izinga lokuthethelwa (degree lokufaka esikhundleni) lithinta ngqo izakhiwo ezakha amafilimu ze-cellulose ether, kanye nobulukhuni befilimu.
2, Amandla
Ngaphezu kokudlulisela izakhiwo ezahlukahlukene ezizuzisayo ezichazwe ngenhla kodaka, i-cellulose ether ibuyisa ama-hydration kinetics kasimende. Lokhu kubuyiselwa emuva ikakhulukazi kwe-adsorption yama-molecule e-cellulose ether ngezigaba ezihlukene zamaminerali ohlelweni lwe-hydrated centment system, kodwa ngokuvamile ekhuluma, ama-cellulose ether molecule adudula ama-Csh kanye ne-calcium hydroxide. Kumkhiqizo wamakhemikhali, akuvamile ukuthi akhishwe esigabeni sokuqala samaminerali se-Clinker. Ngaphezu kwalokho, ngenxa yokwanda kwe-viscosity yesisombululo se-pore, i-cellulose ether inciphisa ukuhamba kwama-ion (CA2 +, SO44-, ...) Esisombululo se-pore, ngaleyo ndlela kubambezele inqubo ye-hydration.
I-Viscosity enye ipharamitha ebalulekile emele izakhiwo zamakhemikhali ze-cellulose afes. Njengoba kushiwo ngenhla, i-viscosity ikakhulukazi ithinta kakhulu umthamo wokugcina amanzi futhi inomthelela omkhulu ekusebenzeni kodaka olusha. Kodwa-ke, izifundo zokuhlola zithole ukuthi ukubonakala kwe-cellulose ether kungabi namphumela kumakhekheni kasimende we-hydration. Isisindo se-molecular sinomthelela omncane ku-hydration, kanye nomehluko omkhulu phakathi kwezinsimbi ezihlukile zamangqamuzana amaminithi ayi-10 kuphela. Ngakho-ke, isisindo se-molecular akuyona i-parameter esemqoka yokulawula i-hydration yesimende.
"Ukusetshenziswa kwe-cellulose ether emikhiqizweni yodaka eyomile esuselwe okomile" kusho ngokusobala ukuthi ukubuyiselwa kwe-cellulose ether kuya ngesakhiwo sayo samakhemikhali. I-General Trend Sumfided yilokho kwe-MHEC, kukhuphuka izinga le-methylation, elincane ukubuyiselwa kwe-cellulose ether. Ngaphezu kwalokho, esikhundleni se-hydrophilic (njengokufaka esikhundleni se-HEC) kucindezelwa kakhulu kune-hydrophobic (njengokufaka esikhundleni se-MH, Mhec, MHPC). Umphumela wokugcina kabusha we-cellulose ether uthinteka ikakhulukazi ngamapharamitha amabili ohlobo nenani leqembu elithile.
Ukuhlolwa kwesistimu yethu kubuye kwathola ukuthi okuqukethwe kwabanye okufakazela iqhaza kudlala indima ebalulekile kumandla omshini we-tile anamathela. Sihlole ukusebenza kwe-HPMC ngamazinga ahlukene wokufaka esikhundleni se-tile anamathela, futhi wahlola ama-cellulose ether ngababili ngamaqembu ahlukene ngaphansi kwezimo ezihlukile zelapha. Ithonya lezakhiwo zemishini zeTile Adhesive, Umdwebo 2 no-3 yimiphumela yezinguquko kokuqukethwe kwe-methoxy (DS) kanye nokuqukethwe kwe-hydroxypropoxy (MS) emandleni okudonsela phansi egumbini lokudonsa.
Isibalo 2
Isibalo +
Esivivinyweni, siyacabangaI-Hydroxypropyl methyl cellulose (HPMC), okuyi-ether eyinkimbinkimbi. Ngakho-ke, kufanele sibeke lezi zibalo ezimbili ndawonye. Ku-HPMC, sidinga ukuhlinzekwa ukuqinisekisa i-soubity yamanzi nokudluliselwa kokukhanya. Siyakwazi okuqukethwe kwabanye. Iphinde inqume izinga lokushisa le-gel le-HPMC, elinquma imvelo lapho kusetshenziswa khona i-HPMC. Ngakho-ke, okuqukethwe yi-HPMC esetshenziswa kakhulu futhi kufakwa enanini. Ukuthi ungahlanganisa kanjani amaqembu we-methoppy ne-hydroxypropoxy kuleli banga ukufezekisa imiphumela emihle yilokho esikufundayo. Umdwebo 2 ukhombisa ukuthi ngaphakathi kwebanga elithile, ukwanda okuqukethwe kwe-methoxyl kuzoletha ukuthambekela okuphansi kwamandla okudonsa, kanti okuqukethwe kwe-hydroxypropoposyl kuzokwanda futhi amandla okudonsela azokwanda. Isikhathi esivulekile, kunemiphumela efanayo.
Isikhathi sePosi: Dec-18-2018