I-HPMC (Hydroxypropyl Methyl Cellulose) iyisengezo esisetshenziswa kakhulu ku-cunmer ngosimende. Kuyinto ether ether ether etholwe ngokulapha iselula nge-methyl chloride ne-propelene oxide. I-HPMC isetshenziswa kabanzi embonini yezokwakha ngenxa yezakhiwo zayo zokugcina amanzi ezinhle kakhulu, njengomuntu omkhulu kanye ne-binder, kanye nokwenza ngcono ukuwenza namandla kasimende. Kulesi sihloko, sizoxoxa ngenqubo yokwenza izitha ze-cellulose e-celtemu.
Ukugcinwa kwamanzi
I-HPMC inezakhiwo ezinhle kakhulu zokugcina amanzi futhi ingagcina okuqukethwe kwamanzi kodaka kasimende ngesikhathi senqubo yokusetha. Ukusebenza kokugcinwa kwamanzi kwe-HPMC kusiza inqubo ye-hydration ka usimende futhi kubambezele inqubo yokumisa, ngaleyo ndlela ethuthukisa amandla kasimende kasimende. Kuyasiza ukunciphisa i-shrinkage, ukuvikela ukuqhekeka futhi kuthuthukise ukubopha izibopho. Lapho i-HPMC ingezwa udaka kasimende, yakha ungqimba oluvikelayo ezungeze imikhiqizo ye-hydration, yehlisa izinga lokuhwamuka kwamanzi odongeni.
Thuthukisa ukusebenza
I-HPMC ithuthukisa ukusebenziseka kwezingodo zohlobo lukakhokho ngokwenza njengomkhulu kanye ne-binder. Uma kuxutshwe namanzi, i-HPMC yakha into efana nejeli ekhulisa ukubonana kwengxube. Le nto efana ne-gel isiza ukugcina usimende wodaka endaweni futhi engaphelelwa amalunga kanye nemilobi. Ukusetshenziswa okuthuthukile kodaka lukakhonkolo nakho kusiza ukunciphisa izindleko zephrojekthi njengoba kuqeda isidingo sokulungiswa njalo. Futhi, ingasetshenziswa ngokushesha futhi kube lula, ijubane lokwakhiwa okwandayo.
Khulisa amandla
Enye inzuzo ebalulekile yokusebenzisa i-HPMC ku-Cement Data ukuthi ikhulisa amandla odaka. I-HPMC isiza ukuhlakaza usimende ngokulinganayo, okuholele esibophweni esinamandla, esithembeke ngokwengeziwe kuya engxenyeni engezansi. Izici zokugcinwa kwamanzi ezithuthukisiwe zosizo lwe-HPMC ekuphulukeni kodaka lukasimende, ngaleyo ndlela kwandise amandla alo. Amanzi asosimende anikezela nge-hydrate ku usimende futhi ukuba khona kwe-HPMC kusiza ukugcina amanzi, ngaleyo ndlela kuthuthukiswe inqubo yokulapha.
Yehlisa i-shrinkage
I-Shrinkage iyinkinga ejwayelekile ku-cunmer ngodaka ngenxa yokuhanjiswa kwamanzi. I-Shrinkage ingaholela ekuqhekekeni, okungathinta kakhulu amandla nokuqina kwesakhiwo. Kodwa-ke, i-HPMC isiza ukunciphisa ukuncipha kosimende we-shrinsage ngokugcina umswakama kanye nokuhamba kancane. Lokhu kunciphisa ingozi yokuqhekeka, okuholela esakhiweni esinamandla, esihlala isikhathi eside.
Thuthukisa ukunamathela
Ekugcineni, i-HPMC isiza ukuthuthukisa amandla ebhondi kasimende kasimende. I-HPMC isebenza njenge-binder esiza ukubamba udaka ndawonye. Kuyasiza nokukha isibopho esiqinile phakathi kodaka kanye ne-substrate. Ikhono elibophayo likasimende kasimende lithuthuka, futhi isakhiwo sinamandla futhi sihlala isikhathi eside, esingamelana namandla angaphandle.
Ekuphetheni
Ekuphetheni, i-HPMC iyisengezo esibalulekile ku-usimende kasimende ngenxa yokugcinwa kwayo kwamanzi, ukusebenziseka, amandla, inciphise yokubumbana nokubumbana okuthuthukile. Indlela yokwenza kwesenzo se-cellulose Tashers ku-usimende kasimende isuselwa ekugcinweni kwamanzi okuthuthukile, ingculaza kwinqubo yokwelapha, ihlinzeka ngokuhlakazeka kosimende, ithuthukisa ukusebenziseka, inciphisa i-shrinkage futhi ithuthukise ukubopha izibopho. Ukusetshenziswa okusebenzayo kwe-HPMC ku-Cement Maiders kungaholela ekuqineni kwezakhiwo eziqinile, ezihlala isikhathi eside futhi ezithembekile, ezibalulekile kunoma yimuphi umsebenzi wokwakha. Ngokusetshenziswa okufanele kwe-HPMC, amaphrojekthi wokwakha angaqedwa ngokushesha, ngempumelelo nangekhwalithi ephezulu.
Isikhathi sePosi: Jul-27-2023