Viscosity ke karolo ea bohlokoa ea thepa ea cellulose ether.Ha re bua ka kakaretso, ha viscosity e phahame, ho ba le phello e ntle ea ho boloka metsi ea seretse sa gypsum.Leha ho le joalo, ha viscosity e phahame, boima ba molek'hule ea cellulose ether bo phahame, 'me ho qhibiliha ha cellulose ether ho fokotseha ka tsela e nepahetseng.Ha li-viscosity li phahame, ho totobetse haholoanyane hore phello e teteaneng e ntse e le teng, empa ha e lekane.Ha li-viscosity li phahame, seretse se metsi se tla khomarela haholoanyane, mohahong, ts'ebetso ea ho khomarela scraper le ho khomarela holimo ho substrate.Empa ha ho na thuso ho eketsa matla a sebopeho sa seretse se metsi ka boeona.Ho phaella moo, nakong ea kaho, ts'ebetso ea ts'ebetso ea seretse se metsi e khahlanong le ho fokotseha ha e totobetse.Ka lehlakoreng le leng, methyl cellulose e fetotsoeng e nang le viscosity e tlase ho isa bohareng e bonts'itse ntlafatso ea matla a sebopeho sa seretse se metsi.Lisebelisoa tsa lerako la mohaho hangata li na le li-porous, li na le ho monya metsi.'Me lisebelisoa tsa ho haha gypsum tse sebelisetsoang ho haha marako, ka mor'a ho eketsa modulation oa metsi leboteng, mongobo o bonolo ho kenngoa ke lerako, e leng se etsang hore gypsum e hloke mongobo o hlokahalang bakeng sa hydration, e bakang mathata a ho haha pola le ho fokotsa matla a tlamahano. , ka hona ho na le mapetsong, moropa o se nang letho, spalling le mathata a mang a boleng.Ho ntlafatsa ho boloka metsi a thepa ea ho haha gypsum ho ka rarolla bothata ba boleng ba kaho le ho ntlafatsa matla a tlamahano le lerako.Ka hona, moemeli oa ho boloka metsi o fetohile e 'ngoe ea li-additives tsa bohlokoa tsa thepa ea mohaho oa gypsum.
Bakeng sa ho nolofatsa kaho, ho sebelisoa lisebelisoa tsa phofo ea moaho joalo ka plaster, sekhomaretsi, plaster e kopanyang le plaster putty, 'me gypsum retarder e eketsoa tlhahiso ho lelefatsa nako ea kaho ea pente ea plaster, hobane ts'ebetso ea hydration ea hemihydrate. gypsum e thibetsoe 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 marako a na le thepa ea ho monya metsi, haholo-holo, lisebelisoa tse ncha tsa lerako tse bobebe tse kang marako a litene, marako a konkreite e nang le moea o motlakase, liphanele tse nang le liphahlo tse nang le mocheso o kentsoeng, kahoo ho etsa kalafo e bolokang metsi ea gypsum slurry, ho qoba ho fetisetsoa ha metsi a mang leboteng, ho etsa hore pente ea gypsum e thatafalloe ha khaello ea metsi e sa phethoe. , etsa hore gypsum le lebota bokaholimo sebaka karohano karohano, khetla.Ho eketsa moemeli oa ho boloka metsi ke ho boloka mongobo o teng ka har'a pente ea gypsum, ho etsa bonnete ba ho arabela ha hydration ea gypsum paste ho sebopeho, kahoo ho netefatsa matla a tlamo.Lintho tse tloaelehileng tse bolokang metsi ke li-cellulose ethers, tse kang Methyl cellulose (MC) , hypromellose (HPMChydroxyethyl methyl cellulose (HEMC), joalo-joalo.Ntle le moo, joala ba polyvinyl, sodium alginate, starch e fetotsoeng, diatomite le phofo e sa tloaelehang ea lefats'e le tsona li ka sebelisoa ho ntlafatsa ho boloka metsi.
Nako ea poso: Jul-26-2023