Viscosity ke karolo ea bohlokoa ea thepa ea ether ea cellulose. Ka kakaretso, ha viscosity e phahame, phello ea ho boloka metsi ea seretse sa gypsum e ba betere. Leha ho le joalo, ha viscosity e phahame, boima ba limolek'hule tsa ether ea cellulose bo phahame, 'me ho qhibiliha ha ether ea cellulose ho fokotseha ka ho loketseng. Ha viscosity e phahame, phello ea ho teteana e totobetse haholoanyane, empa ha e lekane. Ha viscosity e phahame, seretse se metsi se tla khomarela haholoanyane, kahong, ts'ebetso ea scraper e khomarelang le ho khomarela ho phahameng ho substrate. Empa ha ho thuse ho eketsa matla a sebopeho sa seretse se metsi ka boeona. Ho phaella moo, nakong ea kaho, ts'ebetso ea seretse se metsi khahlanong le ho thella ha e bonahale. Ka lehlakoreng le leng, Methyl cellulose e 'ngoe e fetotsoeng e nang le viscosity e tlase ho isa ho e mahareng e bontšitse ntlafatso matleng a sebopeho sa seretse se metsi. Lisebelisoa tsa lebota la kaho boholo ba tsona ke meaho e nang le masoba, li na le ho monya metsi. Le thepa ea kaho ea gypsum e sebelisoang bakeng sa kaho ea lebota, kamora ho eketsa phetoho ea metsi leboteng, mongobo o monyeha habonolo ke lebota, o etsa hore gypsum e hloke mongobo o hlokahalang bakeng sa ho nosetsa, e leng se bakang mathata kahong ea plaster le ho fokotsa matla a tlamo, ka hona ho na le mapetso, moropa o se nang letho, ho qhalana le mathata a mang a boleng. Ho ntlafatsa ho boloka metsi ha thepa ea kaho ea gypsum ho ka rarolla bothata ba boleng ba kaho le ho ntlafatsa matla a tlamo lebota. Ka hona, moemeli ea bolokang metsi e se e le e 'ngoe ea lintho tsa bohlokoa tse tlatsetsang thepa ea kaho ea gypsum.
E le ho nolofatsa kaho, ho sebelisoa thepa ea phofo ea moaho joalo ka plaster, plaster e khomarelang, plaster e kopanyang le putty ea plaster, 'me gypsum retarder e eketsoa tlhahisong ho lelefatsa nako ea kaho ea plaster paste, hobane ts'ebetso ea metsi ea hemihydrate gypsum e thibeloa ka ho eketsa retarder ho gypsum, mofuta ona oa gypsum paste o hloka ho lula leboteng lihora tse 1-2 pele o beha, 'me boholo ba mabota a na le thepa ea ho monya metsi, haholo-holo, thepa e ncha ea lebota e bobebe joalo ka mabota a litene, mabota a konkreite a nang le moea, liphanele tsa ho thibela mocheso tse nang le masoba, kahoo ho etsa kalafo ea gypsum slurry e bolokang metsi, ho qoba phetisetso ea metsi a mang leboteng, ho etsa hore gypsum paste e tiee ha khaello ea metsi, hydration e sa fella, ho baka karohano ea gypsum le bokaholimo ba lebota, khetla. Ho eketsa moemeli oa ho boloka metsi ke ho boloka mongobo o ka har'a gypsum paste, ho netefatsa karabelo ea hydration ea gypsum paste sebakeng sa ho kopanya, ka hona ho netefatsa matla a tlamo. Lintho tse tloaelehileng tse bolokang metsi ke li-ether tsa cellulose, tse kang Methyl cellulose (MC), hypromellose (HPMC), hydroxyethyl methyl cellulose (HEMC) , jj. . Ho phaella moo, polyvinyl alcohol, sodium alginate, modified starch, diatomite le rare earth powder le tsona di ka sebediswa ho ntlafatsa ho boloka metsi.
Nako ea poso: Phupu-26-2023