I-cellulose ether kuya ku-gypsum mortar

Kokubili i-carboxymethyl cellulose kanye ne-methyl cellulose ingasetshenziswa njengama-ejenti agcina amanzi okhonkolo, kodwa umphumela wokugcina amanzi we-carboxymethyl cellulose uphansi kakhulu kunalowo we-methyl cellulose, futhi i-carboxymethyl cellulose iqukethe usawoti wesodium, ngakho-ke ayifanele ukufakwa ukhonkolo. eParis. Inomphumela wokuhlehlisa futhi inciphisa amandla okhonkolo we-paris. I-Methyl cellulose iyinhlanganisela efanelekile yezinto zikasimende ze-gypsum ezihlanganisa ukugcinwa kwamanzi, ukujiya, ukuqinisa, kanye ne-viscosifying, ngaphandle kokuthi ezinye izinhlobo zinomthelela wokuhlehlisa lapho umthamo mkhulu. iphezulu kune-carboxymethyl cellulose. Ngenxa yalesi sizathu, izinto eziningi ze-gypsum composite gelling zisebenzisa indlela yokuhlanganisa i-carboxymethyl cellulose ne-methyl cellulose, ezingagcini nje ngokubonisa izici zazo (njengomphumela wokubambezela we-carboxymethyl cellulose, umphumela wokuqinisa we-methyl cellulose), futhi zisebenzisa izinzuzo zazo ezivamile. (njengokugcina kwawo amanzi kanye nomphumela wokujiya). Ngale ndlela, kokubili ukusebenza kokugcinwa kwamanzi kwe-gypsum cementitious material kanye nokusebenza okuphelele kwe-gypsum cementitious material kungathuthukiswa, kuyilapho ukukhuphuka kwezindleko kugcinwa endaweni ephansi kakhulu.

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

I-viscosity iyipharamitha ebalulekile yei-methyl cellulose etherukusebenza.

Ngokuvamile, ukuphakama kwe-viscosity, kuba ngcono umphumela wokugcina amanzi we-gypsum mortar. Kodwa-ke, ukuphakama kwe-viscosity, ukuphakama kwesisindo se-molecule ye-methyl cellulose ether, kanye nokwehla okuhambisanayo kokuncibilika kwayo kuzoba nomthelela omubi emandleni nasekusebenzeni kokwakhiwa kodaka. Ukuphakama kwe-viscosity, kusobala kakhulu umphumela wokuqina odongeni, kodwa awulingani ngokuqondile. Ukuphakama kwe-viscosity, i-viscous yodaka olumanzi luyoba lukhulu. Ngesikhathi sokwakhiwa, kubonakala njengokunamathela ku-scraper nokunamathela okuphezulu ku-substrate. Kodwa akusizi ukwandisa amandla esakhiwo sodaka olumanzi ngokwalo. Ngaphezu kwalokho, ngesikhathi sokwakhiwa, ukusebenza kwe-anti-sag kodaka olumanzi akubonakali. Ngokuphambene, i-viscosity ethile emaphakathi nephansi kodwa eshintshiwe ye-methyl cellulose ethers inokusebenza okuhle kakhulu ekuthuthukiseni amandla esakhiwo sodaka olumanzi.

Kubaluleke kangakanani ukucoleka kwe-cellulose ether odakeni?

I-Fineness futhi iyinkomba yokusebenza ebalulekile ye-methyl cellulose ether. I-MC esetshenziselwa udaka lwempushana eyomile idingeka ukuthi ibe yimpushana enamanzi aphansi, futhi ukucoleka kudinga u-20% kuya ku-60% wosayizi wezinhlayiyana ukuba ube ngaphansi kwama-63m. Ukucoleka kuthinta ukunyibilika kwe-methyl cellulose ether. I-coarse MC ivamise ukuba yi-granular, okulula ukuyihlakaza nokuncibilika emanzini ngaphandle kwe-agglomeration, kodwa izinga lokuhlakazeka lihamba kancane kakhulu, ngakho-ke alifanelekile ukusetshenziswa kudaka olomile lwempuphu. Eminye imikhiqizo yasekhaya i-flocculent, akulula ukuyihlakaza futhi incibilike emanzini, futhi kulula ukuyihlanganisa . Odakeni lwempushana olomile, i-MC ihlakazwa phakathi kwama-aggregates, izigcwalisi ezinhle nosimende nezinye izinto zikasimende. Impushana enhle ngokwanele kuphela engagwema i-methyl cellulose ether agglomeration lapho ixutshwa namanzi. Lapho i-MC yengezwe ngamanzi ukuze ihlakaze ama-agglomerate, kunzima kakhulu ukuhlakazeka nokuhlakazeka. I-coarse MC ayigcini nje ngokumosha, kodwa futhi inciphisa amandla endawo odaka. Uma udaka olunjalo lwe-powder elomile lusetshenziswa endaweni enkulu, isivinini sokuphulukisa sodaka lwendawo sizoncishiswa kakhulu, futhi imifantu izovela ngenxa yezikhathi ezahlukene zokuphulukisa. Ngodaka olufuthwe ngokwakhiwa kwemishini, imfuneko yokucwenga iphakeme ngenxa yesikhathi esifushane sokuxuba.

Ukucoleka kwe-MC nakho kunomthelela othile ekugcineni kwayo amanzi. Ngokuvamile, kuma-methyl cellulose ether ane-viscosity efanayo kodwa ukucoleka okuhlukile, ngaphansi kwesamba esifanayo sokwengezwa, ukucoleka kuya kuba ngcono umphumela wokugcina amanzi.