Udaka oluxutyiweyo olumanzi: Udaka oluxutyiweyo luhlobo lwesamente, iaggregate ecolekileyo, ingxubevange kunye namanzi, kwaye ngokweempawu zamacandelo ahlukeneyo, ngokomlinganiselo othile, emva kokulinganiswa kwisikhululo sokuxuba, ixutywe, ithuthelwe kwindawo apho ilori isetyenziswa, kwaye yangeniswa kwiSitolo esikhethekileyo isikhongozeli kwaye usebenzise umxube omanzi ogqityiweyo ngexesha elichaziweyo.
IHydroxypropyl methylcellulose isetyenziswa njengearhente yokugcina amanzi kudaka lwesamente kunye neretarder 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.Ukugcinwa kwamanzi yipropathi ebalulekileyo ye-hydroxypropyl methylcellulose 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.
Kukho imisebenzi emithathu ephambili ye-hydroxypropyl methylcellulose HPMC kudaka lomxube omanzi, enye inamandla okugcina amanzi, enye yimpembelelo ehambelanayo kunye ne-thixotropy ye-wet-mix mortar, kwaye okwesithathu kukusebenzisana nesamente.Ukugcinwa kwamanzi kwi-ether ye-cellulose kuxhomekeke kwisantya sokufunxa kwamanzi kwisiseko, ukubunjwa kodaka, ubukhulu bodaka lodaka, imfuno yamanzi yodaka, kunye nexesha lokumisela.Ukuphakama kokungafihli kwe-hydroxypropyl methylcellulose, kokukhona kungcono ukugcinwa kwamanzi.
Izinto ezichaphazela ukugcinwa kwamanzi omdaka odibeneyo omanzi ziquka i-cellulose ether viscosity, inani elongezelelweyo, ubungakanani beqhekeza kunye nobushushu.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.
Ngokuqhelekileyo, okukhona i-viscosity iphezulu, 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 ngokwawo akuncedi.Ulwakhiwo ezibini alunamsebenzi ocacileyo wokulwa ne-sag.Ngokwahlukileyo, i-viscosity ethile ephakathi kunye nephantsi kodwa i-hydroxypropyl methylcellulose elungisiweyo inomsebenzi ogqwesileyo ekuphuculeni amandla okwakhiwa kodaka olumanzi.
Ubuninzi be-ether ye-cellulose eyongeziweyo kwi-PMC yodaka olumanzi, ngcono ukugcinwa kwamanzi, kunye nokuphakama kwe-viscosity, ngcono ukugcinwa kwamanzi.Ukulunga kukwasisalathisi somsebenzi obalulekileyo we-hydroxypropyl methylcellulose.
Ukulunga kwe-hydroxypropyl methylcellulose nako kunempembelelo ethile ekugcineni kwayo amanzi.Ngokubanzi, kwi-hydroxypropyl methylcellulose ene-viscosity efanayo kunye nokucoleka okwahlukileyo, ubuncinci ubuncinci, buncinci umphumo wokugcinwa kwamanzi phantsi kwesixa esifanayo sokongeza.ngcono.
Kudaka oluxutyiweyo olumanzi, inani elongezelelweyo le-ether ye-cellulose HPMC liphantsi kakhulu, kodwa linokuphucula kakhulu ukwakhiwa kodaka olumanzi, kwaye iyona nto yokongeza echaphazela kakhulu ukusebenza kodaka.Ukukhetha okunengqiqo kwe-hydroxypropyl methylcellulose, ukusebenza kodaka olumanzi kuchaphazeleke kakhulu.
Ixesha lokuposa: Apr-25-2023