Kwinxalenye yodaka oluyimpuphu eyomileyo,i-cellulose ethersisithako esibalulekileyo esinomlinganiselo ophantsi wokongeza, kodwa sinokuyiphucula kakhulu indlela esebenza ngayo i-mortar yokuxuba kunye nokwakha. Ngamafutshane, phantse zonke iipropati zokuxuba ezimanzi ze-mortar ezinokubonwa ngamehlo enyama zibonelelwa yi-cellulose ether. Sisithako se-cellulose esifunyenwe ngokusebenzisa i-cellulose evela emthini nakwikotoni, sisabela kwi-caustic soda, size emva koko sithambise nge-etherifying agent.
Iintlobo ze-cellulose ethers
A. I-Hydroxypropyl methyl cellulose (HPMC), eyenziwe kakhulu ngekotoni ecociweyo ecocekileyo kakhulu njengezinto eziluhlaza, itshiswe ngokukodwa phantsi kweemeko ze-alkaline.
B. I-Hydroxyethyl methylcellulose (HEMC), i-non-ionic cellulose ether, inombala omhlophe ofana nomgubo, ayinavumba kwaye ayinancasa.
C. I-Hydroxyethyl cellulose (HEC), i-surfactant engeyiyo i-ionic, imhlophe ngembonakalo, ayinavumba, ayinancasa kwaye ilula ukuyikhupha.
Ezi zingentla zii-non-ionic cellulose ethers, kunye nee-ionic cellulose ethers (ezifana ne-carboxymethyl cellulose CMC).
Ngexesha lokusetyenziswa kodaka oluyimpuphu eyomileyo, kuba i-ionic cellulose (CMC) ayizinzanga xa kukho i-calcium ions, ayisetyenziswa rhoqo kwiinkqubo ze-inorganic gelling ezinesamente kunye nelayimu etyibilikayo njengezinto zokufaka isamente. Kwezinye iindawo eTshayina, ezinye ii-putty zangaphakathi zodonga ezicutshungulwe ngesitatshi esilungisiweyo njengezinto eziphambili zokufaka isamente kunye nomgubo weShuangfei njenge-filler zisebenzisa i-CMC njenge-thickener. Nangona kunjalo, ngenxa yokuba le mveliso ithambekele kwi-mildew kwaye ayixhathisi emanzini, isuswa kancinci kancinci yimarike. Okwangoku, i-cellulose ether esetyenziswa kakhulu eTshayina yi-HPMC.
I-Cellulose ether isetyenziswa kakhulu njengesixhobo sokugcina amanzi kunye nesithambisi kwizinto ezisekwe kwisamente.
Umsebenzi wayo wokugcina amanzi unokuthintela i-substrate ekufunxeni amanzi amaninzi kwaye uthintele ukufuma kwamanzi, ukuze kuqinisekiswe ukuba isamente inamanzi aneleyo xa imanzi. Thatha umsebenzi wokuplasta njengomzekelo. Xa kusetyenziswa i-slurry eqhelekileyo yesamente kumphezulu wesiseko, i-substrate eyomileyo nenemingxuma iya kutsala ngokukhawuleza amanzi amaninzi kwi-slurry, kwaye umaleko we-slurry yesamente okufutshane nomaleko wesiseko uya kulahlekelwa lula ngamanzi afunekayo ukuze kumanziswe. , ngoko ke ayinakukwazi nje ukwenza ijeli yesamente enamandla okubopha kumphezulu we-substrate, kodwa ikwanokugoba nokuphuma kwamanzi, ukuze umaleko we-slurry yesamente yomphezulu kube lula ukuwa. Xa i-grout esetyenzisiweyo incinci, kulula nokwenza imifantu kwi-grout yonke. Ke ngoko, kwixesha elidlulileyo lokusebenza kwe-surface plaster, amanzi adla ngokusetyenziswa ukumanzisa i-substrate kuqala, kodwa lo msebenzi awudingi nje kuphela umsebenzi omninzi kwaye uthatha ixesha, kodwa nomgangatho womsebenzi kunzima ukuwulawula.
Ngokubanzi, ukugcinwa kwamanzi kwesamente kuyanda ngokunyuka komxholo we-cellulose ether. Okukhona i-viscosity ye-cellulose ether eyongeziweyo ikhula, kokukhona ukugcinwa kwamanzi kuyanda.
Ukongeza ekugcinweni nasekuqineni kwamanzi, i-cellulose ether ikwachaphazela nezinye iimpawu zesamente, ezinje ngokulibazisa, ukufaka umoya emithanjeni, kunye nokwandisa amandla ebhondi. I-Cellulose ether iyacothisa inkqubo yokuseta kunye nokuqina kwesamente, ngaloo ndlela yongeza ixesha lokusebenza. Ke ngoko, ngamanye amaxesha isetyenziswa njenge-coagulant.
Ngophuhliso lwesamente exutywe nodaka olomileyo,i-cellulose etheriye yaba yinto ebalulekileyo yokudibanisa i-samente mortar. Nangona kunjalo, kukho iintlobo ngeentlobo kunye neenkcukacha ze-cellulose ether, kwaye umgangatho phakathi kweebhetshi usatshintshatshintsha.
Ixesha leposi: Epreli-25-2024