Kubaluleke kangakanani ubucwebe be-cellulose ether ku-mortar

Yimiphi imiphumela ehlukene ye-cellulose ehlukene ku-plaster yaseParis

Kokubili i-carboxymethyl cellulose kanye ne-methyl cellulose zingasetshenziswa njengezinto zokugcina amanzi ku-plaster, kodwa umphumela wokugcina amanzi we-carboxymethyl cellulose uphansi kakhulu kunowe-methyl cellulose, kanti i-carboxymethyl cellulose iqukethe usawoti we-sodium, ngakho-ke ayifanele i-plaster ye-paris. Inomphumela wokulibazisa futhi inciphisa amandla e-plaster ye-paris. I-Methyl cellulose iyindlela efanelekile yokuxuba izinto ze-gypsum cementitious ezihlanganisa ukugcinwa kwamanzi, ukuqina, ukuqinisa, kanye nokuqina, ngaphandle kokuthi ezinye izinhlobo zinomphumela wokulibazisa lapho umthamo uphakeme kune-carboxymethyl cellulose. Ngenxa yalesi sizathu, izinto eziningi ze-gypsum composite gelling zisebenzisa indlela yokuhlanganisa.i-carboxymethyl cellulosefuthii-methyl cellulose, ezingagcini nje ngokubonisa izici zazo (njengomphumela wokulibazisa we-carboxymethyl cellulose, umphumela wokuqinisa we-methyl cellulose), futhi ziveza izinzuzo zazo ezivamile (njengokugcina amanzi nokuqina kwawo). Ngale ndlela, kokubili ukusebenza kokugcinwa kwamanzi kwezinto eziqinisa i-gypsum kanye nokusebenza okuphelele kwezinto eziqinisa i-gypsum kungathuthukiswa, kuyilapho ukwenyuka kwezindleko kugcinwa endaweni ephansi kakhulu.

Ibaluleke kangakanani i-viscosity ye-methyl cellulose ether ku-gypsum mortar?

Ukuqina kuyipharamitha ebalulekile yokusebenza kwe-methyl cellulose ether.

Ngokuvamile, uma i-viscosity iphakeme, umphumela wokugcina amanzi we-gypsum mortar uba ngcono. Kodwa-ke, uma i-viscosity iphakeme, isisindo sama-molecule se-methyl cellulose ether siphakeme, kanye nokwehla okuhambisanayo kokuncibilika kwayo kuzoba nomthelela omubi emandleni nasekusebenzeni kokwakhiwa kwe-mortar. Uma i-viscosity iphakeme, umphumela wokujiya ubonakala kakhulu ku-mortar, kodwa awulingani ngokuqondile. Uma i-viscosity iphakeme, kulapho i-mortar emanzi izoba mnene kakhulu. Ngesikhathi sokwakhiwa, ibonakala njengokunamathela ku-scraper kanye nokunamathela okuphezulu ku-substrate. Kodwa akusizi ukwandisa amandla esakhiwo se-mortar emanzi uqobo. Ngaphezu kwalokho, ngesikhathi sokwakhiwa, ukusebenza kwe-mortar emanzi okulwa nokuwa akubonakali. Ngokuphambene nalokho, amanye ama-viscosity aphakathi nendawo naphansi kodwa aguquliwe e-methyl cellulose ethers asebenza kahle kakhulu ekuthuthukiseni amandla esakhiwo se-mortar emanzi.

Kubaluleke kangakanani ubucwebe be-cellulose ether ku-mortar?

Ubuncane buyinkomba ebalulekile yokusebenza kwe-methyl cellulose ether. I-MC esetshenziselwa udaka oluyimpuphu eyomile iyadingeka ukuthi ibe yimpuphu enokuqukethwe kwamanzi aphansi, kanti ubuncane budinga futhi u-20% kuya ku-60% wobukhulu bezinhlayiya ukuthi bube ngaphansi kuka-63m. Ubuncane buthinta ukuncibilika kwe-methyl cellulose ether. I-MC eyisicaba ivame ukuba yi-granular, okulula ukuyihlakaza nokuyincibilikisa emanzini ngaphandle kokuhlangana, kodwa izinga lokuncibilika lihamba kancane, ngakho-ke ayifanele ukusetshenziswa kudaka oluyimpuphu eyomile. Eminye imikhiqizo yasekhaya iyabhidlika, akulula ukuyihlakaza nokuyincibilikisa emanzini, futhi kulula ukuyihlanganisa. Kudaka oluyimpuphu eyomile, i-MC ihlakazeka phakathi kwezinto zokufaka usimende njenge-aggregate, i-fine filler kanye ne-cement, futhi i-powder encane ngokwanele kuphela engagwema ukuhlangana kwe-methyl cellulose ether lapho ixutshwa namanzi. Uma i-MC ingezwa ngamanzi ukuze kuncibilikiswe ama-agglomerate, kunzima kakhulu ukuyihlakaza nokuyincibilikisa.MCAkugcini nje ngokuchitha imali, kodwa futhi kunciphisa amandla endawo kadoti. Uma udaka olunjalo oluyimpuphu eyomile lusetshenziswa endaweni enkulu, ijubane lokuqiniswa kodaka lwendawo lizoncishiswa kakhulu, futhi kuzovela imifantu ngenxa yezikhathi ezahlukene zokuqiniswa. Kudaka olufuthwe ngokwakhiwa komshini, isidingo sokuba lucwebe siphezulu ngenxa yesikhathi esifushane sokuxuba.

Ubucwebe be-MC bunomthelela othile ekugcinweni kwamanzi kwayo. Ngokuvamile, kuma-ether e-methyl cellulose ane-viscosity efanayo kodwa ubucwebe obuhlukile, ngaphansi kwenani elifanayo lokwengeza, uma kuncane kakhulu, umphumela wokugcina amanzi uba ngcono.