I-ether ye-celluloseukugcinwa kwamanzi
Ukugcinwa kwamanzi kwe-mortar kubhekisela ekhonweni le-mortar lokubamba nokukhiya amanzi. Uma i-viscosity ye-cellulose ether iphakeme, ukugcinwa kwamanzi kuba ngcono. Ngoba isakhiwo se-cellulose siqukethe i-hydroxyl ne-ether bond, iqembu le-hydroxyl ne-ether bond lama-athomu e-oxygen nama-molecule amanzi ukuhlanganisa i-hydrogen bond, ukuze amanzi akhululeke abe ngamanzi ahlanganisayo, ajikeleze amanzi, ukuze adlale indima yokugcina amanzi.
Ukuncibilika kwe-cellulose ether
1. I-ether ye-cellulose eyinkimbinkimbi kulula ukuyihlakaza emanzini ngaphandle kokuhlangana, kodwa izinga lokuncibilika lihamba kancane kakhulu. I-ether ye-cellulose engaphansi kwe-mesh engu-60 incibilika emanzini cishe imizuzu engama-60.
2. Izinhlayiya ezincane ze-cellulose ether emanzini kulula ukuzihlakaza futhi azihlangani, futhi izinga lokuncibilika liphakathi. I-cellulose ether engaphezu kwe-mesh engu-80 incibilikiswe emanzini cishe imizuzu emi-3.
3. I-ether ye-cellulose e-Ultrafine ihlakazeka ngokushesha emanzini, incibilike ngokushesha futhi yakhe i-viscosity esheshayo. I-ether ye-cellulose engaphezu kwe-mesh engu-120 incibilika emanzini cishe imizuzwana eyi-10-30.
Uma izinhlayiya ze-cellulose ether zincane, kulapho ukugcinwa kwamanzi kuba ngcono khona, izinhlayiya eziqinile ze-cellulose ether kanye nobuso bokuxhumana kwamanzi kuzoncibilika ngokushesha futhi kwakheke i-gel phenomenon. Iglue igoqa izinto ukuze ivimbele ama-molecule amanzi ukuthi angaqhubeki nokungena. Ngezinye izikhathi, noma ngabe ixutshwe isikhathi eside, isixazululo asikwazi ukuhlakazeka ngokulinganayo futhi sincibilike, sakhe isixazululo esinodaka noma i-agglomerate. Izinhlayiya ezincane ziyahlakazeka futhi zincibilike ngokushesha lapho zithintana namanzi ukuze zakhe i-viscosity efanayo.
Inani le-PH le-cellulose ether (ukujiya okubambezelekile noma amandla okuqala)
Inani le-PH labakhiqizi be-cellulose ether ekhaya nakwamanye amazwe lilawulwa cishe ku-7, okuyi-acidic. Ngenxa yokuthi kusenesakhiwo esiningi sendandatho ye-glucose eyomile esakhiweni sama-molecule se-cellulose ether, indandatho ye-glucose eyomile yiqembu eliyinhloko elibangela ukubambezeleka kwesimende. Indandatho ye-glucose eyomile ingenza ama-ion e-calcium esixazululweni se-hydration yesimende sakha ushukela ama-calcium molecular compounds, inciphise ukuhlushwa kwe-calcium ion esikhathini sokungeniswa kwe-hydration yesimende, ivimbele ukwakheka kanye nokuna kwe-calcium hydroxide kanye namakristalu kasawoti we-calcium, ngaleyo ndlela ibambezele inqubo ye-hydration yesimende. Uma inani le-PH liba yisimo se-alkaline, udaka luzovela isimo samandla okuqala. Manje iningi lamafektri ukulungisa inani le-PH lisebenzisa i-sodium carbonate, i-sodium carbonate uhlobo lwe-ejenti esheshisayo, i-sodium carbonate ingathuthukisa ukusebenza kobuso bezinhlayiya zesimende, okubangela ukuhlangana phakathi kwezinhlayiya kukhuphuke, kuthuthukise kakhulu i-viscosity ye-slurry, udaka kanye ne-sodium carbonate kanye ne-calcium ion compound ngokushesha, kwabangela ukwakheka kwe-ettringite, ukuminyana kwesimende ngokushesha. Ngakho-ke, inani le-PH kufanele lilungiswe ngokuya ngamakhasimende ahlukene enkambisweni yokukhiqiza yangempela.
Ukufakwa kwegesi ye-cellulose ether
Umoya ongeniswa yi-cellulose ether ubangelwa ukuthi i-cellulose ether nayo iyi-surfactant, umsebenzi wokuxhumana we-cellulose ether uvela kakhulu ku-interface yegesi-uketshezi-eqinile, owokuqala ukwethulwa kwama-bubble, kulandelwe ukuhlakazeka nokumanzisa. I-cellulose ether iqukethe iqembu le-alkyl, inciphisa kakhulu ukungezwani kobuso namandla okuxhumana kwamanzi, isisombululo samanzi enkambisweni yokushukuma kulula ukukhiqiza ama-bubble amaningi amancane avaliwe.
Ukuhlanganiswa kwe-cellulose ether
I-cellulose ether encibilikisiwe ku-mortar ngenxa yochungechunge lwayo lwama-molecule weqembu le-methoxy ne-hydroxypropyl ku-slurry enama-ion e-calcium nama-ion e-aluminium ekwakhiweni kwejeli eliqinile futhi igcwaliswe ngesikhala se-mortar yesimende, ithuthukisa ubuningi be-mortar, idlala indima yokugcwalisa nokuqinisa okuguquguqukayo. Kodwa-ke, lapho i-matrix ehlanganisiwe icindezelwa, i-polymer ayikwazi ukudlala ukwesekwa okuqinile, ngakho-ke isilinganiso samandla nokucindezela se-mortar siyancipha.
Ukwakheka kwefilimui-cellulose ether
Ifilimu encane ye-latex yakhiwa phakathi kwe-cellulose ether kanye nezinhlayiya zesimende ngemva kokumanzisa. Ifilimu inomphumela wokuvala futhi ithuthukisa isimo sokoma kodaka. Ngenxa yokuthi i-cellulose ether inokugcinwa kwamanzi okuhle, gcina ama-molecule amanzi anele ngaphakathi kodaka, ngaleyo ndlela kuqinisekiswe amandla okumanzisa kwesimende kanye nokuqina kwawo kanye nokuthuthukiswa kwawo ngokuphelele, kuthuthukiswe amandla okubopha kodaka, ngesikhathi esifanayo kuthuthukiswe ukunamathela kodaka lwesimende, udaka lunokuqina okuhle kanye nokuqina, kuncishiswe ukuguguleka kodaka.
Isikhathi sokuthunyelwe: Ephreli-26-2024