Ukuqina kwe-ether yiparameter ebalulekileyo yokusebenza kwe-cellulose ether.
Ngokubanzi, okukhona i-viscosity iphezulu, kokukhona i-gypsum mortar iphezulu. Nangona kunjalo, okukhona i-viscosity iphezulu, kokukhona ubunzima be-molecular ye-cellulose ether buphezulu, kwaye ukuncipha kokunyibilika kwayo kuya kuba nefuthe elibi kumandla kunye nokusebenza kolwakhiwo lwe-mortar. Okukhona i-viscosity iphezulu, kokukhona isiphumo sokutyeba sibonakala ngakumbi kwi-mortar, kodwa ayilingani ngokuthe ngqo.
Okukhona i-viscosity iphezulu, kokukhona i-mortar emanzi iya kuba ne-viscous ngakumbi. Ngexesha lokwakha, ibonakala njengokunamathela kwi-scraper kunye nokunamathela okuphezulu kwi-substrate. Kodwa akuncedi ukwandisa amandla olwakhiwo lwe-mortar emanzi ngokwayo. Ukongeza, ngexesha lokwakha, ukusebenza kwe-mortar emanzi akubonakali. Ngokwahlukileyo koko, ezinye i-viscosity ephakathi nephantsi kodwa i-modified methyl cellulose ethers zisebenza kakuhle ekuphuculeni amandla olwakhiwo lwe-mortar emanzi.
Izinto zokwakha eludongeni ikakhulu zizakhiwo ezinemingxuma, kwaye zonke zifunxa amanzi ngamandla. Nangona kunjalo, izinto zokwakha ze-gypsum ezisetyenziselwa ukwakha udonga zilungiswa ngokongeza amanzi eludongeni, kwaye amanzi afunxwa lula ludonga, nto leyo ebangela ukunqongophala kwamanzi afunekayo ukuze i-gypsum ifunxeke, nto leyo ebangela ubunzima ekufakeni iplasta kunye nokuncipha kwamandla e-bond, nto leyo ebangela ukuqhekeka, iingxaki zomgangatho ezifana nokugqobhoza nokuxobuka. Ukuphucula ukugcinwa kwamanzi kwezinto zokwakha ze-gypsum kunokuphucula umgangatho wokwakha kunye namandla okubopha eludongeni. Ke ngoko, iarhente yokugcina amanzi iye yaba yenye yezinto ezibalulekileyo ezidityanisiweyo zezinto zokwakha ze-gypsum.
Kusetyenziswa i-plastering gypsum, i-bonded gypsum, i-caulking gypsum, i-gypsum putty kunye nezinye izinto ze-construction powder. Ukuze kube lula ukwakha, kongezwa ii-gypsum retarders ngexesha lokuvelisa ukuze kwandiswe ixesha lokwakha i-gypsum slurry. Ngenxa yokuba i-gypsum ixutywe ne-Retarder, ethintela inkqubo yokufunxa i-hemihydrate gypsum. Olu hlobo lwe-gypsum slurry kufuneka lugcinwe eludongeni kangangeyure eli-1 ukuya kwezi-2 ngaphambi kokuba lutshone. Uninzi lweendonga luneempawu zokufunxa amanzi, ingakumbi iindonga zezitena kunye nekhonkrithi enomoya. Udonga, ibhodi yokugquma enemingxuma kunye nezinye izinto ezintsha zodonga ezilula, ngoko ke unyango lokugcina amanzi kufuneka lwenziwe kwi-gypsum slurry ukuze kuthintelwe ukudluliselwa kwenxalenye yamanzi kwi-slurry eludongeni, okubangela ukunqongophala kwamanzi kunye nokufunxa okungaphelelanga xa i-gypsum slurry iqina. Kubangela ukwahlukana nokuqhekeka kwe-joint phakathi kwe-gypsum kunye nomphezulu wodonga. Ukongezwa kwe-arhente yokugcina amanzi kukugcina umswakama oqulethwe kwi-gypsum slurry, ukuqinisekisa impendulo yokufunxa i-gypsum slurry kwindawo yokudibanisa, ukuqinisekisa amandla okufunxa. Iiarhente zokugcina amanzi ezisetyenziswa rhoqo zii-cellulose ethers, ezifana ne: i-methyl cellulose (MC), i-hydroxypropyl methyl cellulose (HPMC), i-hydroxyethyl methyl cellulose (HEMC), njl. Ukongeza, i-polyvinyl alcohol, i-sodium alginate, i-modified starch, i-diatomaceous earth, i-rare earth powder, njl. nazo zingasetyenziselwa ukuphucula ukusebenza kokugcinwa kwamanzi.
Ixesha lokuthumela: Feb-28-2023