Kubaluleke kangakanani ukucoleka kwe-cellulose ether odakeni

Iyini imiphumela ehlukile ye-cellulose ehlukile ku-plaster wase-Paris

Kokubili i-carboxymethyl cellulose kanye ne-methyl cellulose ingasetshenziswa njengama-ejenti agcina amanzi okhonkolo, kodwa umphumela wokugcina amanzi we-carboxymethyl cellulose uphansi kakhulu kunawe-methyl cellulose, kanti 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 yokuhlanganisai-carboxymethyl cellulosefuthii-methyl cellulose, ezingasebenzisi izici zazo kuphela (njengomphumela wokubambezela we-carboxymethyl cellulose, umphumela oqinisayo 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 yokusebenza kwe-methyl cellulose ether.

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 eyomile, i-MC ihlakazeka phakathi kwezinto zikasimende njenge-aggregate, isigcwalisi esihle nosimende, futhi impushana enhle kuphela eyanele engagwema i-methyl cellulose ether agglomeration lapho ixutshwa namanzi. Lapho i-MC yengezwe ngamanzi ukuze ihlakaze ama-agglomerate, kunzima kakhulu ukuhlakazeka nokuhlakazeka. KumahhadlaMCakukona nje ukumosha, kodwa futhi kunciphisa amandla endawo udaka. Uma udaka olunjalo lwempuphu eyomile lusetshenziswa endaweni enkulu, isivinini sokuphulukisa sodaka lwendawo sizoncishiswa kakhulu, futhi imifantu izovela ngenxa yezikhathi ezihlukene 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.