Njengomxube obaluleke kakhulu ekwakheni iimveliso zemortar ezixutywe nodaka, i-cellulose ether idlala indima ebalulekileyo ekusebenzeni nasekuxabiseni kwemortar exutywe nodaka. Kukho iintlobo ezimbini ze-cellulose ethers: enye yi-ionic, njenge-sodium carboxymethyl cellulose (CMC), kwaye enye ayisiyo-ionic, njenge-methyl cellulose (MC), i-hydroxyethyl cellulose (HEC), i-Hydroxypropyl cellulose (HPMC), njl. Okwangoku, uninzi lweemveliso ze-cellulose ether zehlabathi zisetyenziswa kwizixhobo zokwakha. Ngophuhliso olukhawulezileyo lweshishini lemortar exutywe nodaka, i-cellulose ether yelizwe lam ngokusisiseko ifikelele kwindawo yayo, kwaye imeko yeemveliso zangaphandle ezilawula imakethi iye yaphuka. Ngokuthandwa okwandayo kokusetyenziswa kweemveliso zemortar ezixutywe nodaka, ilizwe lam liza kuba ngumvelisi omkhulu wemortar exutywe nodaka emhlabeni, ukusetyenziswa kwe-cellulose ether kuya kwanda ngakumbi, kwaye abavelisi bayo kunye neentlobo zemveliso nazo ziya kwanda. Ukusebenza kwemveliso ye-cellulose ether kwimortar exutywe nodaka kuye kwaba yinto ephambili kubavelisi kunye nabasebenzisi.
Eyona nto ibalulekileyo kwi-cellulose ether kukugcinwa kwamanzi kwayo kwizinto zokwakha. Ngaphandle kokongezwa kwe-cellulose ether, umaleko omncinci we-mortar entsha uyoma ngokukhawuleza kangangokuba isamente ayinakukwazi ukufuma ngendlela eqhelekileyo kwaye i-mortar ayinakuqina kwaye ifikelele ekuhlanganeni okuhle. Kwangaxeshanye, ukongezwa kwe-cellulose ether kwenza i-mortar ibe ne-plasticity elungileyo kunye nokuguquguquka, kwaye kuphucula amandla okubopha kwe-mortar. Makhe sithethe ngempembelelo ekusetyenzisweni kwe-mortar exutywe nomileyo ekusebenzeni kwemveliso ye-cellulose ether.
1. Ubunono be-cellulose
Ubunzima be-cellulose ether buchaphazela ukunyibilika kwayo. Umzekelo, xa ubunzima be-cellulose ether buphantsi, kokukhona inyibilika ngokukhawuleza emanzini kwaye kuphuculwe ukusebenza kokugcinwa kwamanzi. Ke ngoko, ubunzima be-cellulose ether kufuneka bufakwe njengenye yeempawu zayo zophando. Ngokubanzi, intsalela yesihluzo se-cellulose ether fineness engaphezulu kwe-0.212mm akufuneki ibe ngaphezulu kwe-8.0%.
2. Izinga lokunciphisa umzimba lokomisa
Izinga lokulahleka kobunzima bokomisa libhekisa kwipesenti yobunzima bezinto ezilahlekileyo kubunzima besampulu yokuqala xa i-cellulose ether yomiswa kubushushu obuthile. Kumgangatho othile we-cellulose ether, izinga lokulahleka kobunzima bokomisa liphezulu kakhulu, nto leyo eya kunciphisa umxholo wezithako ezisebenzayo kwi-cellulose ether, ichaphazele isiphumo sokusetyenziswa kwamashishini asezantsi, kwaye yonyuse iindleko zokuthenga. Ngokwesiqhelo, ukulahleka kobunzima xa komiswa i-cellulose ether akudluli kwi-6.0%.
3. Umxholo wothuthu lwe-sulfate kwi-cellulose ether
Ngomgangatho othile we-cellulose ether, umxholo wothuthu uphezulu kakhulu, nto leyo eya kunciphisa umxholo wezithako ezisebenzayo kwi-cellulose ether kwaye ichaphazele isiphumo sokusebenza kwamashishini asezantsi. Umxholo wothuthu lwe-sulfate we-cellulose ether luphawu olubalulekileyo lokusebenza kwayo. Xa idibene nemeko yangoku yemveliso yabavelisi be-cellulose ether abakhoyo kwilizwe lam, ngokuqhelekileyo umxholo wothuthu we-MC, HPMC, HEMC akufuneki udlule kwi-2.5%, kwaye umxholo wothuthu we-HEC cellulose ether akufuneki udlule kwi-10.0%.
4. Ukuqina kwe-cellulose ether
Ukugcinwa kwamanzi kunye nefuthe lokutyeba kwe-cellulose ether kuxhomekeke kakhulu kwi-viscosity kunye nomthamo we-cellulose ether ngokwayo eyongezwe kwi-slurry yesamente.
5. Ixabiso le-pH le-cellulose ether
Ubuninzi beemveliso ze-cellulose ether buya kuncipha kancinci emva kokuba zigcinwe kubushushu obuphezulu okanye ixesha elide, ingakumbi kwiimveliso ezine-viscosity ephezulu, ngoko ke kuyimfuneko ukunciphisa i-pH. Ngokubanzi, kuyacetyiswa ukulawula uluhlu lwe-pH ye-cellulose ether ukuya kwi-5-9.
6. Ukuhanjiswa kokukhanya kwe-cellulose ether
Ukuhanjiswa kokukhanya kwe-cellulose ether kuchaphazela ngokuthe ngqo isiphumo sayo sokusebenza kwizixhobo zokwakha. Izinto eziphambili ezichaphazela ukuhanjiswa kokukhanya kwe-cellulose ether zezi: (1) umgangatho wezinto ezikrwada; (2) isiphumo se-alkalization; (3) umlinganiselo wenkqubo; (4) umlinganiselo we-solvent; (5) isiphumo sokungaguquguquki. Ngokwesiphumo sokusebenzisa, ukuhanjiswa kokukhanya kwe-cellulose ether akufuneki kube ngaphantsi kwe-80%.
7. Ubushushu bejeli ye-cellulose ether
I-Cellulose ether isetyenziswa kakhulu njenge-viscosifier, i-plasticizer kunye ne-arhente yokugcina amanzi kwiimveliso zesamente, ngoko ke i-viscosifier kunye nobushushu bejeli zizinto ezibalulekileyo zokulinganisa umgangatho we-cellulose ether. Ubushushu bejeli busetyenziselwa ukumisela uhlobo lwe-cellulose ether, oluhambelana nomgangatho wokutshintshwa kwe-cellulose ether. Ukongeza, ityuwa kunye nokungcola kunokuchaphazela ubushushu bejeli. Xa ubushushu besisombululo bunyuka, i-cellulose polymer ilahlekelwa ngamanzi kancinci kancinci, kwaye i-viscosity yesisombululo iyancipha. Xa i-gel point ifikelelwa, i-polymer iyaphelelwa ngamanzi ngokupheleleyo kwaye yenze ijeli. Ke ngoko, kwiimveliso zesamente, ubushushu buhlala bulawulwa ngaphantsi kobushushu bokuqala bejeli. Phantsi kwale meko, okukhona ubushushu buphantsi, kokukhona i-viscosity iphakama, kwaye kokukhona isiphumo sokutyeba kunye nokugcinwa kwamanzi sicacile.
Ixesha leposi: Februwari-17-2023