Zithini iziphumo ezahlukeneyo ze-cellulose ezahlukeneyo kwi-plaster yaseParis?
Zombini i-carboxymethyl cellulose kunye ne-methyl cellulose zingasetyenziswa njengezinto zokugcina amanzi kwi-plaster, kodwa isiphumo sokugcina amanzi se-carboxymethyl cellulose siphantsi kakhulu kunese-methyl cellulose, kwaye i-carboxymethyl cellulose inetyuwa yesodium, ngoko ayifanelekanga kwi-plaster ye-paris. Inesiphumo sokulibazisa kwaye inciphisa amandla e-plaster ye-paris. I-Methyl cellulose ludibaniso olufanelekileyo lwezinto ze-gypsum cementitious ezidibanisa ukugcinwa kwamanzi, ukuqina, ukuqinisa, kunye ne-viscosifying, ngaphandle kokuba ezinye iintlobo zinesiphumo sokulibazisa xa idosi inkulu. Ingaphezulu kune-carboxymethyl cellulose. Ngenxa yesi sizathu, uninzi lwezinto ze-gypsum composite gelling zisebenzisa indlela yokudibanisa.i-carboxymethyl cellulosekwayei-methyl cellulose, ezingasebenzisi nje kuphela iimpawu zazo (ezifana nesiphumo sokulibazisa se-carboxymethyl cellulose, isiphumo sokuqinisa se-methyl cellulose), kwaye zisebenzisa izibonelelo zazo ezifanayo (ezifana nokugcinwa kwamanzi kunye nesiphumo sokutyeba). Ngale ndlela, zombini ukusebenza kokugcinwa kwamanzi kwezinto ze-gypsum cementitious kunye nokusebenza okubanzi kwezinto ze-gypsum cementitious kunokuphuculwa, ngelixa ukunyuka kweendleko kugcinwa kwinqanaba eliphantsi.
Ibaluleke kangakanani i-viscosity ye-methyl cellulose ether kwi-gypsum mortar?
Ukuqina kwe-ether yiparameter ebalulekileyo yokusebenza kwe-methyl cellulose.
Ngokubanzi, okukhona i-viscosity iphezulu, kokukhona i-gypsum mortar iphezulu. Nangona kunjalo, okukhona i-viscosity iphezulu, kokukhona ubunzima be-molecular ye-methyl cellulose ether buphezulu, kwaye ukuncipha kokunyibilika kwayo kuya kuba nefuthe elibi kumandla kunye nokusebenza kolwakhiwo lwe-mortar. Okukhona i-viscosity iphezulu, kokukhona i-viscosity iphezulu, kokukhona i-viscosity icaca ngakumbi kwi-mortar, kodwa ayilingani ngokuthe ngqo. Okukhona i-viscosity iphezulu, kokukhona i-mortar emanzi iya kuba ne-viscous ngakumbi. Ngexesha lokwakha, ibonakaliswa njengokunamathela kwi-scraper kunye nokunamathela okuphezulu kwi-substrate. Kodwa akuncedi ukwandisa amandla olwakhiwo lwe-mortar emanzi ngokwayo. Ukongeza, ngexesha lokwakha, ukusebenza kwe-anti-sag kwe-mortar emanzi akubonakali. Ngokwahlukileyo koko, ezinye i-viscosity ephakathi nephantsi kodwa i-modified methyl cellulose ethers zisebenza kakuhle ekuphuculeni amandla olwakhiwo lwe-mortar emanzi.
Kubaluleke kangakanani ukuba i-cellulose ether ibe ncinci kwi-mortar?
Ubunzima bukwayindlela ebalulekileyo yokusebenza kwe-methyl cellulose ether. I-MC esetyenziselwa uthuli oluyimpuphu kufuneka ibe yimpuphu enomthamo wamanzi aphantsi, kwaye ubunzulu bukwafuna i-20% ukuya kwi-60% yobukhulu besuntswana ukuba ibe ngaphantsi kwe-63m. Ubunzima buchaphazela ukunyibilika kwe-methyl cellulose ether. I-MC ecolekileyo idla ngokuba yi-granular, elula ukuyisasaza nokuyinyibilikisa emanzini ngaphandle kokuhlanganiswa, kodwa izinga lokunyibilika licotha kakhulu, ngoko ke ayifanelekanga ukusetyenziswa kuthuli oluyimpuphu. Ezinye iimveliso zasekhaya ziyanyibilika, akulula ukuzisasaza nokuyinyibilikisa emanzini, kwaye kulula ukuzihlanganisa. Kwithuli oluyimpuphu eyomileyo, i-MC isasazeka phakathi kwezinto zokusimisa ezifana ne-aggregate, i-fine filler kunye nesamente, kwaye yimpuphu ecolekileyo kuphela enokuthintela ukuhlanganiswa kwe-methyl cellulose ether xa ixutywa namanzi. Xa i-MC yongezwa ngamanzi ukunyibilikisa ii-agglomerate, kunzima kakhulu ukuzisasaza nokuyinyibilikisa.MCayichithi nje kuphela, kodwa ikwanciphisa amandla engingqi yesamente. Xa isamente eso somgubo owomileyo sisetyenziswa kwindawo enkulu, isantya sokusila sesamente sasekuhlaleni siya kuncipha kakhulu, kwaye imingxunya iya kuvela ngenxa yamaxesha ahlukeneyo okusila. Kwisamente esitshiziweyo ngokwakhiwa koomatshini, imfuneko yokucoleka iphezulu ngenxa yexesha elifutshane lokuxuba.
Ukuqina kwe-MC kunempembelelo ethile ekugcinweni kwamanzi. Ngokubanzi, kwii-ether ze-methyl cellulose ezine-viscosity efanayo kodwa ukuqina okwahlukileyo, phantsi komlinganiselo ofanayo wokongeza, okukhona kuncinci kokukhona kuncinci kokukhona kulungileyo ukugcinwa kwamanzi.
Ixesha leposi: Epreli-25-2024