Kwi-mortar, i-cellulose ether idlala indima yokugcina amanzi, ukuqina, ukulibazisa amandla okufunxa isamente, kunye nokuphucula ukusebenza kolwakhiwo. Umthamo olungileyo wokugcina amanzi wenza ukufunxa isamente kugqibelele ngakumbi, kunokuphucula i-viscosity emanzi ye-mortar emanzi, kwandise amandla okubopha kwe-mortar, kwaye kulungiswe ixesha. Ukongeza i-cellulose ether kwi-mortar yokutshiza ngoomatshini kunokuphucula ukusebenza kokutshiza okanye ukupompa kunye namandla olwakhiwo lwe-mortar. I-Cellulose isetyenziswa kakhulu njengesongezelelo esibalulekileyo kwi-mortar exutywe sele ilungile. Ukuthatha intsimi yezixhobo zokwakha njengomzekelo, i-cellulose ether ineempawu ezintle ezifana nokuqina, ukugcinwa kwamanzi, kunye nokulibaziseka. Ke ngoko, i-cellulose ether yeklasi yezinto zokwakha isetyenziswa kakhulu ukuphucula imveliso ye-mortar exutywe sele ilungile (kubandakanya i-mortar exutywe sele ilungile kunye ne-mortar exutywe sele ilungile), i-resin ye-PVC, njl., ipeyinti ye-latex, i-putty, njl., kubandakanya ukusebenza kweemveliso zezinto zokwakha.
I-Cellulose inokulibazisa inkqubo yokufunxa isamente. I-Cellulose ether inika i-mortar iipropati ezahlukeneyo eziluncedo, kwaye ikwanciphisa ubushushu bokuqala bokufunxa isamente kwaye ilibazise inkqubo yokufunxa isamente. Oku akulunganga ekusebenziseni i-mortar kwiindawo ezibandayo. Esi siphumo sokulibazisa sibangelwa kukufunxa iimolekyuli ze-cellulose ether kwiimveliso zokufunxa ezifana ne-CSH kunye ne-ca(OH)2. Ngenxa yokwanda kwe-viscosity yesisombululo se-pore, i-cellulose ether inciphisa ukuhamba kwee-ions kwisisombululo, ngaloo ndlela ilibazisa inkqubo yokufunxa. Okukhona uxinzelelo lwe-cellulose ether kwizinto ze-mineral gel, kokukhona isiphumo sokulibazisa sibonakala ngakumbi. I-Cellulose ether ayilibaziseki nje kuphela, kodwa ikwalibazisa inkqubo yokuqina kwenkqubo ye-cement mortar. Isiphumo sokulibazisa se-cellulose ether asixhomekekanga kuphela kuxinzelelo lwayo kwinkqubo ye-mineral gel, kodwa nakwisakhiwo seekhemikhali. Okukhona izinga le-methylation ye-HEMC liphezulu, kokukhona isiphumo sokulibazisa se-cellulose ether singcono. Umlinganiselo wokutshintshwa kwe-hydrophilic ekutshintsheni okwandisa amanzi Isiphumo sokulibazisa sinamandla ngakumbi. Nangona kunjalo, i-viscosity ye-cellulose ether ayinampembelelo ingako kwi-kinetics ye-hydration yesamente.
Njengoko umxholo we-hydroxypropyl methylcellulose ether unyuka, ixesha lokuseta le-mortar landa kakhulu. Kukho ulwalamano oluhle olungekho ngqo phakathi kwexesha lokuqala lokuseta le-mortar kunye nomxholo we-cellulose ether, kunye nolwalamano oluhle oluhambelanayo phakathi kwexesha lokugqibela lokuseta kunye nomxholo we-cellulose ether. Singalawula ixesha lokusebenza le-mortar ngokutshintsha ubungakanani be-cellulose ether.
Ixesha lokuthumela: Matshi-09-2023