1. Udaka oluxubeneyo olumanzi: udaka oluxubekileyo luhlobo lwesamente, i-aggregate efanelekileyo, i-admixture kunye namanzi, kwaye ngokuhambelana neempawu zamacandelo ahlukeneyo, ngokomlinganiselo othile, emva kokulinganiswa kwisikhululo sokuxuba, ixutywe, ihanjiswe kwindawo apho ilori isetyenziselwa khona, kwaye yangena kwindawo ekhethekileyo yokugcina isitya kwaye usebenzise umxube ogqityiweyo omanzi ngexesha elichaziweyo.
I-2.I-Hydroxypropyl methyl cellulose isetyenziswa njenge-agent egcina amanzi kwi-cement mortar kunye ne-retarder yokumpompa udaka. Kwimeko ye-gypsum njenge-binder yokuphucula isicelo kunye nokwandisa ixesha lokusebenza, ukugcinwa kwamanzi kwe-HPMC kuthintela i-slurry ekuqhekekeni ngokukhawuleza emva kokumisa, kwaye iphucula amandla emva kokuqina. Ugcino lwamanzi yipropathi ebalulekileyo ye-hydroxypropyl methyl cellulose HPMC, kwaye ikwayinkxalabo yabaninzi basekhaya abavelisi bemixube yodaka olumanzi. Izinto ezichaphazela umphumo wokugcinwa kwamanzi omdaka odibeneyo omanzi ziquka inani le-HPMC eyongeziweyo, i-viscosity ye-HPMC, i-fineness of particles kunye nokushisa kwendawo yokusetyenziswa.
3.Imisebenzi ephambili ye-hydroxypropyl methyl celluloseHPMCkudaka oluxutyiweyo olumanzi ubukhulu becala lubandakanya imiba emithathu, enye ikumgangatho obalaseleyo wokubamba amanzi, enye yimpembelelo yokungaguquguquki kunye ne-thixotropy yodaka oluxutyiweyo olumanzi, kwaye okwesithathu kukunxibelelana nesamente. Ukugcinwa kwamanzi kwe-cellulose ether kuxhomekeke kwisantya sokufunxa kwamanzi kwisiseko, ukubunjwa kodaka, ubukhulu bodaka lodaka, imfuno yamanzi yodaka, kunye nexesha lokumisela. Okukhona kuphezulu ukungafihli kwe-hydroxypropyl methyl cellulose, kokukhona kungcono ukugcinwa kwamanzi.
I-4.Izinto ezichaphazela ukugcinwa kwamanzi omdaka oxutywe ngamanzi ziquka i-cellulose ether viscosity, inani elongezelelweyo, ubukhulu be-particle kunye nokushisa. Okukhona i-viscosity ye-cellulose ether, ngcono ukugcinwa kwamanzi. I-Viscosity yiparameter ebalulekileyo yokusebenza kwe-HPMC. Kwimveliso efanayo, iziphumo zokusebenzisa iindlela ezahlukeneyo zokulinganisa i-viscosity ziyahluka kakhulu, kwaye ezinye zine-gap ephindwe kabini. Ke ngoko, ukuthelekiswa kwe-viscosity kufuneka kuqhutywe ngendlela efanayo yokuvavanya, kubandakanywa nobushushu, i-spindle, njl.
5.Ngokuthetha ngokubanzi, ukuphakama kwe-viscosity, ngcono ukugcinwa kwamanzi. Nangona kunjalo, ukuphakama kwe-viscosity, ukuphakama kwe-molecular weight ye-HPMC kunye ne-solubility ephantsi ye-HPMC, enefuthe elibi kumandla kunye nokusebenza kokwakhiwa kodaka. Ukuphakama kwe-viscosity, kuyabonakala ngakumbi umphumo wokuqina wodaka, kodwa awuhambelani ngokuthe ngqo. Ukuphakama kwe-viscosity, i-viscous yodaka olumanzi, ngcono ukusebenza kolwakhiwo, ukusebenza kwe-viscous scraper kunye nokuphakama kokunamathela kwi-substrate. Nangona kunjalo, ukonyuka kwamandla okwakhiwa kodaka olumanzi ngokwalo akuncedi. Ulwakhiwo ezibini alunamsebenzi ocacileyo wokulwa ne-sag. Ngokwahlukileyo, i-viscosity ethile ephakathi kunye nesezantsi kodwa i-hydroxypropyl methyl cellulose ehlaziyiweyo inomsebenzi ogqwesileyo ekuphuculeni amandla okwakhiwa kodaka olumanzi.
6.I-ether enkulu ye-cellulose ether eyongezwe kwi-HPMC yodaka olumanzi, ngcono ukugcinwa kwamanzi, kunye nokuphakama kwe-viscosity, ngcono ukugcinwa kwamanzi. Ukulunga kukwayisalathisi sokusebenza esibalulekileyo se-hydroxypropyl methyl cellulose.
7.Ukulunga kwe-hydroxypropyl methyl cellulose nako kunempembelelo ethile ekugcineni amanzi. Ngokubanzi, kwi-hydroxypropyl methyl cellulose ene-viscosity efanayo kunye nokucoleka okwahlukileyo, okuncinci ukucoleka, okuncinci umphumo wokugcinwa kwamanzi phantsi kwesixa esifanayo sokudibanisa. ngcono.
I-8.Kudaka oluxutywe ngamanzi, inani elongezelelweyo le-cellulose ether HPMC liphantsi kakhulu, kodwa linokuphucula kakhulu ukwakhiwa kodaka olumanzi, kwaye iyona nto yokongeza echaphazela kakhulu ukusebenza kodaka. Ukukhetha okunengqiqo kwe-hydroxypropyl methyl cellulose, ukusebenza kodaka olumanzi kuchaphazeleke kakhulu.
Ixesha lokuposa: Apr-28-2024