Ku-mortar, i-cellulose ether idlala indima yokugcina amanzi, ukuqina, ukubambezela amandla okufaka usimende, kanye nokuthuthukisa ukusebenza kokwakhiwa. Umthamo omuhle wokugcina amanzi wenza ukugcwaliswa kwesimende kuphelele, kungathuthukisa i-viscosity emanzi yesitsha esimanzi, kwandise amandla okubopha kwesitsha, futhi kulungise isikhathi. Ukwengeza i-cellulose ether kusitsha sokufafaza ngomshini kungathuthukisa ukusebenza kokufafaza noma kokupompa kanye namandla esakhiwo sesitsha. I-Cellulose isetshenziswa kabanzi njengesithako esibalulekile kusitsha esixutshwe ngomumo. Uma sithatha insimu yezinto zokwakha njengesibonelo, i-cellulose ether inezakhiwo ezinhle kakhulu njengokuqina, ukugcinwa kwamanzi, kanye nokulibaziseka. Ngakho-ke, i-cellulose ether yezinga lezinto zokwakha isetshenziswa kabanzi ukuthuthukisa ukukhiqizwa kwesitsha esixutshwe ngomumo (kufaka phakathi isitsha esixutshwe ngomumo kanye nesitsha esixutshwe ngomumo owomile), i-PVC resin, njll., upende we-latex, i-putty, njll., kufaka phakathi ukusebenza kwemikhiqizo yezinto zokwakha.
I-Cellulose ingalibazisa inqubo yokumunca i-samente. I-Cellulose ether inika udaka izakhiwo ezahlukahlukene ezizuzisayo, futhi inciphisa ukushisa kokuqala kokumunca i-samente futhi ilibazise inqubo eguquguqukayo yokumunca i-samente. Lokhu akulungile ukusetshenziswa kodaka ezindaweni ezibandayo. Lo mphumela wokumunca ubangelwa ukumuncwa kwama-molecule e-cellulose ether emikhiqizweni yokumunca i-samente efana ne-CSH ne-ca(OH)2. Ngenxa yokwanda kwe-viscosity yesisombululo se-pore, i-cellulose ether inciphisa ukuhamba kwama-ion esixazululweni, ngaleyo ndlela ibambezele inqubo yokumunca i-samente. Lapho ukuminyana kwe-cellulose ether ezintweni zejeli yamaminerali kuphezulu, kulapho umphumela wokumunca i-samente ubonakala khona. I-Cellulose ether ayigcini nje ngokulibazisa ukusetha, kodwa futhi ibambezela inqubo yokuqina kohlelo lwe-samente mortar. Umphumela wokumunca i-cellulose ether awuxhomekile kuphela ekuminyaneni kwayo ohlelweni lwejeli yamaminerali, kodwa futhi nasekwakhekeni kwamakhemikhali. Lapho izinga le-methylation ye-HEMC liphezulu, kulapho umphumela wokumunca i-samente ether uba ngcono. Isilinganiso sokushintsha kwe-hydrophilic ekushintsheni okwandisa amanzi Umphumela wokumunca uqina kakhulu. Kodwa-ke, i-viscosity ye-cellulose ether ayinawo umthelela omkhulu ku-kinetics ye-hydration yesimende.
Ngokukhula kokuqukethwe kwe-hydroxypropyl methylcellulose ether, isikhathi sokusetha se-mortar sanda kakhulu. Kukhona ubudlelwano obuhle obungaqondile phakathi kwesikhathi sokuqala sokusetha se-mortar nokuqukethwe kwe-cellulose ether, kanye nobudlelwano obuhle obuqondile phakathi kwesikhathi sokugcina sokusetha nokuqukethwe kwe-cellulose ether. Singalawula isikhathi sokusebenza se-mortar ngokushintsha inani le-cellulose ether.
Isikhathi sokuthunyelwe: Mashi-09-2023