Zeziphi iziphumo ezahlukeneyo zeselulosi ezahlukeneyo kwi-plaster yaseParis
Zombini i-carboxymethyl cellulose kunye ne-methyl cellulose zinokusetyenziswa njengeejenti zokugcina amanzi kwi-plaster, kodwa umphumo wokugcina amanzi we-carboxymethyl cellulose ungaphantsi kakhulu kune-methyl cellulose, kwaye i-carboxymethyl cellulose inetyuwa yesodium, ngoko ayifanelekanga kwi-plaster eParis. Inesiphumo esibambezelekayo kwaye inciphisa amandla e-plaster of paris. I-Methyl cellulose ngumxube ofanelekileyo we-gypsum cementitious materials edibanisa ukugcinwa kwamanzi, ukutyeba, ukomeleza, kunye ne-viscosifying, ngaphandle kokuba ezinye iindidi zinefuthe lokubuyiswa xa idosi inkulu. iphezulu kune-carboxymethyl cellulose. Ngenxa yesi sizathu, izinto ezininzi ze-gypsum composite gelling zisebenzisa indlela yokudibanisacarboxymethyl cellulosekwayei-methyl cellulose, ezingasebenzisi nje kuphela iimpawu zabo (ezifana nefuthe lokunciphisa i-carboxymethyl cellulose, i-reinforcing effect ye-methyl cellulose), kwaye basebenzise iingenelo zabo eziqhelekileyo (ezifana nokugcinwa kwamanzi kunye nomphumo wokuqina). Ngale ndlela, zombini ukugcinwa kwamanzi kwi-gypsum cementitious material kunye nokusebenza ngokubanzi kwe-gypsum cementitious material kunokuphuculwa, ngelixa ukunyuka kweendleko kugcinwa kwindawo ephantsi.
Ibaluleke kangakanani i-viscosity ye-methyl cellulose ether kwi-gypsum mortar?
I-Viscosity yiparameter ebalulekileyo yokusebenza kwe-methyl cellulose ether.
Ngokuqhelekileyo, okukhona i-viscosity iphezulu, kokukhona isiphumo sokugcina amanzi kwi-gypsum mortar. Nangona kunjalo, ukuphakama kwe-viscosity, ukuphakama kwe-molecular weight ye-methyl cellulose ether, kunye nokuncipha okuhambelanayo kwi-solubility yayo kuya kuba nefuthe elibi kumandla kunye nokusebenza kokwakhiwa kodaka. Ukuphakama kwe-viscosity, kuyabonakala ngakumbi umphumo wokuqina kumdaka, kodwa awuhambelani ngokuthe ngqo. Ukuphakama kwe-viscosity, i-viscous ngakumbi udaka olumanzi luya kuba. Ngethuba lokwakhiwa, kubonakaliswa njengokunamathela kwi-scraper kunye nokunamathela okuphezulu kwi-substrate. Kodwa akuncedi ukunyusa amandla esakhiwo sodaka olumanzi ngokwalo. Ukongezelela, ngexesha lokwakhiwa, ukusebenza kwe-anti-sag yodaka olumanzi alubonakali. Ngokuchasene noko, i-viscosity ethile ephakathi kunye nephantsi kodwa i-methyl cellulose ethers elungisiweyo inomsebenzi ogqwesileyo ekuphuculeni amandla okwakhiwa kodaka olumanzi.
Kubaluleke kangakanani ukucolwa kwe-cellulose ether kudaka?
Ukulunga kukwayisalathisi sokusebenza esibalulekileyo se-methyl cellulose ether. I-MC esetyenziselwa udaka lwepowder eyomileyo iyadingeka ukuba ibe ngumgubo kunye nomxholo wamanzi aphantsi, kwaye i-fineness nayo ifuna i-20% ukuya kwi-60% ye-particle size ibe ngaphantsi kwe-63m. Ukucoleka kuchaphazela ukunyibilika kwe-methyl cellulose ether. I-coarse MC idla ngokuba yigranular, ekulula ukuyichitha kunye nokunyibilika emanzini ngaphandle kwe-agglomeration, kodwa isantya sokuchithwa sicotha kakhulu, ngoko asifanelekanga ukusetyenziswa kwi-powder mortar. Ezinye iimveliso zasekhaya zi-flocculent, akulula ukuba zisasazwe kwaye zinyibilike emanzini, kwaye kulula ukuzidibanisa. Kwipowder eyomileyo yodaka, i-MC ihlakazekile phakathi kwezinto zesamente ezifana ne-aggregate, i-fine filler kunye nesamente, kwaye kuphela umgubo ococekileyo owaneleyo unokunqanda i-methyl cellulose ether agglomeration xa ixutywa namanzi. Xa i-MC yongezwa ngamanzi ukunyibilikisa i-agglomerates, kunzima kakhulu ukuchithwa kunye nokuchithwa. IrhabaxaMCayinakumosha nje kuphela, kodwa ikwanciphisa amandla asekuhlaleni odaka. Xa udaka olomileyo lwepowder lusetyenziswa kwindawo enkulu, isantya sokunyanga sodaka lwendawo siya kuncitshiswa kakhulu, kwaye iintanda ziya kubonakala ngenxa yamaxesha ahlukeneyo okuphilisa. Ngodaka olutshiziweyo kunye nokwakhiwa komatshini, imfuno yokucolisa iphezulu ngenxa yexesha elifutshane lokuxuba.
Ukucoleka kwe-MC kukwanefuthe elithile ekugcineni amanzi. Ngokubanzi, kwi-methyl cellulose ethers ezineviscosity efanayo kodwa ukucoleka okwahlukileyo, phantsi komyinge wokongeza ofanayo, kokukhona ucoleka kokukhona kungcono ugcino lwamanzi.
Ixesha lokuposa: Apr-25-2024