I-Viscosity yiparameter yepropati ebalulekileyo ye-cellulose ether. Ngokuqhelekileyo, okukhona i-viscosity iphezulu, ingcono isiphumo sokugcina amanzi kwi-gypsum mortar. Nangona kunjalo, okukhona i-viscosity iphezulu, kokukhona ubunzima bemolekyuli be-cellulose ether bunjalo, kunye nokunyibilika kwe-ether cellulose kuncipha ngokufanelekileyo. Okukhona i-viscosity iphezulu, kokukhona kubonakala ngakumbi ukuba isiphumo sokuqina, kodwa asilingani. Ukuphakama kwe-viscosity, ngakumbi udaka olumanzi luya kuba, ekwakhiweni, ukusebenza kokunamathela kwi-scraper kunye nokunamathela okuphezulu kwi-substrate. Kodwa akuloncedo ukwandisa amandla esakhiwo sodaka olumanzi ngokwalo. Ukongezelela, ngexesha lokwakhiwa, ukusebenza kodaka olumanzi oluchasene nokungasebenzi alubonakali. Ngokwahlukileyo, enye i-Methyl cellulose elungisiweyo ene-viscosity ephantsi ukuya ephakathi ibonise ukuphucuka kumandla okwakhiwa kodaka olumanzi. Izixhobo zodonga lwezakhiwo zininzi zezakhiwo ezinamanzi, zinokufunxa amanzi. Kwaye izinto zokwakha ze-gypsum ezisetyenziselwa ukwakhiwa kweendonga, emva kokongeza ukumodareyitha kwamanzi eludongeni, ukufuma kulula ukufunxwa eludongeni, okubangela ukuba i-gypsum iswele ukufuma okuyimfuneko kwi-hydration, ebangela ubunzima ekwakhiweni kokutyabeka kunye nokunciphisa amandla okubambisana, ngoko kukho iintanda, igubu elingenanto, i-spalling kunye nezinye iingxaki zomgangatho. Ukuphucula ukugcinwa kwamanzi kwezixhobo zokwakha i-gypsum kunokusombulula ingxaki yomgangatho wokwakha kunye nokuphucula amandla okubambisana nodonga. Ngoko ke, i-ejenti yokugcina amanzi iye yaba enye yezongezo ezibalulekileyo zezinto zokwakha ze-gypsum.
Ukuququzelela ulwakhiwo, izixhobo zomgubo wokwakha ezifana ne-plaster, i-adhesive plaster, i-plaster edibeneyo kunye ne-plaster putty iyasetyenziswa, kwaye i-gypsum retarder yongezwa kwimveliso yokwandisa ixesha lokwakhiwa kwe-plaster paste, kuba inkqubo ye-hydration ye-hemihydrate gypsum iyathintelwa ngokudibanisa i-retarder kwi-gypsum, olu hlobo lwe-gypsum luhlala luhlala kwiindonga ezininzi kunye neeyure ezininzi ze-gypsum. ube nepropathi yokufunxa amanzi, ngakumbi, izinto ezintsha zodonga olukhaphukhaphu ezifana neendonga zezitena, iindonga zekhonkrithi ene-aerated, iipaneli zokugquma ezishushu, ukuze kuqhutywe unyango lokugcina amanzi kwi-slurry ye-gypsum, ukunqanda ukuhanjiswa kolunye udaka lwamanzi eludongeni, kubangela ukuba intlama yegypsum ibe lukhuni xa ukunqongophala kwamanzi, i-hydration ingabikho udonga oludibeneyo, kunye ne-hydration edibeneyo. Ukongeza i-agent yokugcina amanzi kukugcina umswakama oqulethwe kwi-gypsum paste, ukuqinisekisa ukuphendulwa kwe-hydration ye-gypsum paste kwi-interface, ngaloo ndlela iqinisekisa amandla ebhondi. Iiarhente eziqhelekileyo zokugcina amanzi zii-cellulose ethers, ezifana neMethyl cellulose (MC) , hypromellose (HPMCI-hydroxyethyl methyl cellulose (HEMC) , njl. Ukongeza, i-polyvinyl alcohol, i-alginate yesodium, isitashi esilungisiweyo, i-diatomite kunye nomgubo onqabileyo womhlaba nawo unokusetyenziselwa ukuphucula ukugcinwa kwamanzi.
Ixesha lokuposa: Jul-26-2023