I-cellulose ether inomphumela othile wokuvinjelwa kodaka. Ngokukhuphuka komthamo we-cellulose ether, isikhathi sokumisa udaka siyakhula. Umthelela wokuvinjelwa kwe-cellulose ether ekunamathiseleni kukasimende ngokuyinhloko uncike ezingeni lokushintshwa kweqembu le-alkyl, kuyilapho ingahlobene kancane nesisindo salo samangqamuzana.
Uma izinga lokushintshwa kwe-alkyl lincane, okuqukethwe kwe-hydroxyl kukhulu, kanye nomthelela obambezelekayo osobala kakhulu. Futhi lapho umthamo we-cellulose ether uphezulu, kuba sobala ngokwengeziwe umphumela wokulibazisa wengqimba yefilimu eyinkimbinkimbi ekufakweni kwamanzi okuqala kukasimende, ngakho umphumela wokuhlehlisa nawo ubonakala kakhudlwana.
Amandla angenye yezinkomba ezibalulekile zokuhlola umphumela wokwelapha wezinto zikasimende ezisekelwe kusimende kungxube. Lapho umthamo we-cellulose ether ukhuphuka, amandla okucindezela namandla okuguquguquka kodaka kuzokwehla. Amandla okubopha okuqinile odaka lukasimende oluxutshwe ne-cellulose ether ayathuthukiswa; Amandla aguquguqukayo futhi acindezelayo odaka lukasimende ayancipha, futhi umthamo omkhulu, amandla aphansi;
Ngemva kokuxuba i-hydroxypropyl methyl cellulose ether, ngokwanda komthamo, amandla aguquguqukayo odaka lukasimende ayanda kuqala bese ehla, futhi amandla okucindezela ayancipha kancane kancane. Umthamo ophelele kufanele ulawulwe ku-0.1%.
I-Cellulose ether inethonya elikhulu ekusebenzeni kokubopha kodaka. I-Cellulose ether yakha ifilimu ye-polymer enomphumela wokuvala phakathi kwezinhlayiya ze-cement hydration ohlelweni lwesigaba se-liquid, okukhuthaza amanzi amaningi efilimu ye-polymer ngaphandle kwezinhlayiya ze-cement, okwenza kube lula ukugeleza okuphelele kukasimende, ngaleyo ndlela kuthuthukise amandla ebhondi. yokunamathisela ngemva kokuqina.
Ngesikhathi esifanayo, inani elifanele le-cellulose ether lithuthukisa ipulasitiki kanye nokuguquguquka kodaka, linciphisa ukuqina kwendawo yoshintsho phakathi kodaka kanye nesixhumi esibonakalayo se-substrate, futhi kunciphisa ikhono lokushelela phakathi kwezixhumanisi. Ngokwezinga elithile, umphumela wokubopha phakathi kodaka ne-substrate uyathuthukiswa.
Ukwengeza, ngenxa yokuba khona kwe-cellulose ether ekunamathisele usimende, indawo ekhethekile yokuguqula isikhombimsebenzisi kanye nesendlalelo esibonakalayo kwakhiwa phakathi kwezinhlayiya zodaka kanye nomkhiqizo we-hydration. Lesi sendlalelo esibonakalayo senza indawo yokuguqula isixhumi esibonakalayo ibe lula futhi iqine kancane. Ngakho-ke, kwenza udaka lube namandla esibopho esiqinile.
Isikhathi sokuthumela: Jun-02-2023