Kumdaka, i-cellulose ether idlala indima yokugcina amanzi, ukuqina, ukulibazisa amandla e-samente, kunye nokuphucula ukusebenza kokwakhiwa. Umthamo olungileyo wokugcinwa kwamanzi wenza i-samente i-hydration igqibeke ngakumbi, inokuphucula i-viscosity emanzi yodaka olumanzi, ukwandisa amandla okubopha udaka, kunye nokulungelelanisa ixesha. Ukongeza i-cellulose ether kumatshini wokutshiza udaka kunokuphucula ukutshiza okanye ukumpompa ukusebenza kunye namandla okwakhiwa kodaka. I-Cellulose isetyenziswa ngokubanzi njengesongezo esibalulekileyo kwi-mortar edibeneyo. Ukuthatha intsimi yezinto zokwakha njengomzekelo, i-cellulose ether ineempawu ezibalaseleyo ezifana nokuqina, ukugcinwa kwamanzi, kunye nokunciphisa. Ngoko ke, i-ether yomgangatho wokwakha i-cellulose ether isetyenziswa ngokubanzi ekuphuculeni imveliso yodaka oluxubeneyo (kubandakanywa udaka olumanzi oluxubekileyo kunye nodaka oluxubekileyo), i-resin ye-PVC, njl. iimveliso zezinto zokwakha.
I-cellulose inokulibazisa inkqubo ye-hydration ye-samente. I-Cellulose ether inika udaka oluneepropati ezahlukeneyo eziluncedo, kwaye inciphisa kwakhona ubushushu bokuqala be-hydration yesamente kwaye ilibazise inkqubo ye-hydration eguquguqukayo yesamente. Oku akulunganga ukusetyenziswa kodaka kwiindawo ezibandayo. Esi siphumo sokubuyisela sibangelwa yi-adsorption ye-cellulose ether molecules kwiimveliso ze-hydration ezifana ne-CSH kunye ne-ca (OH) i-2. Ngenxa yokunyuka kwe-viscosity yesisombululo se-pore, i-ether ye-cellulose iyanciphisa ukuhamba kwe-ion kwisisombululo, ngaloo ndlela ilibazise inkqubo ye-hydration. Ukuphakama koxinzelelo lwe-cellulose ether kwizinto ze-mineral gel, isiphumo esicacileyo sokulibaziseka kwe-hydration. I-ether ye-cellulose ayilibazisi nje ukubeka, kodwa iphinda ilibazise inkqubo yokuqina kwenkqubo yodaka lwesamente. Umphumo wokunciphisa i-cellulose ether ayixhomekanga kuphela ekugxininiseni kwayo kwinkqubo ye-gel mineral, kodwa nakwisakhiwo samachiza. Ukuphakama kweqondo le-methylation ye-HEMC, ingcono isiphumo sokubuyiswa kwe-cellulose ether. Umlinganiselo we-hydrophilic substitution ukuya endaweni yokwandisa amanzi Umphumo wokubuyisela unamandla. Nangona kunjalo, i-viscosity ye-cellulose ether inefuthe elincinci kwi-cement hydration kinetics.
Ngokunyuka komxholo we-hydroxypropyl methyl cellulose ether, ixesha lokumisela udaka landa kakhulu. Kukho ukulungelelaniswa okuhle okungahambi kakuhle phakathi kwexesha lokuqala lokumisela lodaka kunye nomxholo we-cellulose ether, kunye nokulungelelaniswa kakuhle komgca phakathi kwexesha lokugqibela lokumisela kunye nomxholo we-cellulose ether. Sinokulawula ixesha lokusebenza lodaka ngokutshintsha inani le-cellulose ether.
Ixesha lokuposa: Mar-04-2023