Ether ea starch e sebelisoa haholo-holo ka har'a seretse sa kaho, e leng se ka amang ho tsitsa ha seretse se thehiloeng ho gypsum, samente le kalaka, 'me sa fetola ho hanela ha seretse le ho salla ha sona. Li-ether tsa starch hangata li sebelisoa hammoho le li-ether tsa cellulose tse sa fetoloang le tse fetotsoeng. E loketse litsamaiso tse sa nke lehlakore le tsa alkaline, 'me e lumellana le lintho tse ngata tse kenyellelitsoeng lihlahisoa tsa gypsum le samente (tse kang li-surfactants, MC, starch le polyvinyl acetate le li-polymer tse ling tse qhibilihang ka metsing).
Likarolo tse ka sehloohong:
(1) Hangata starch ether e sebelisoa hammoho le methyl cellulose ether, e bonts'ang phello e ntle ea tšebelisano lipakeng tsa tse peli. Ho eketsa tekanyo e loketseng ea starch ether ho methyl cellulose ether ho ka ntlafatsa haholo khanyetso ea ho sag le khanyetso ea ho thella ha seretse, ka boleng bo phahameng ba chai.
(2) Ho eketsa tekanyo e loketseng ea starch ether ho seretse se nang le methyl cellulose ether ho ka eketsa haholo botsitso ba seretse le ho ntlafatsa phallo ea metsi, ho etsa hore kaho e be boreleli le ho hohla ho be bonolo.
(3) Ho eketsa tekanyo e loketseng ea starch ether ho seretse se nang le methyl cellulose ether ho ka eketsa ho boloka metsi ha seretse le ho lelefatsa nako ea ho buleha.
(4) Ether ea starch ke ether ea starch e fetotsoeng ka lik'hemik'hale e qhibilihang ka metsing, e tsamaellanang le lintho tse ling tse tlatselletsang ka har'a seretse se omileng sa phofo, e sebelisoang haholo ho likhomaretsi tsa tile, seretse sa tokiso, plaster ea plaster, putty ea lebota ea kahare le kantle, Manonyeletso a kentsoeng a thehiloeng ho gypsum le thepa ea ho tlatsa, li-interface agents, seretse sa masonry.
Litšobotsi tsa starch ether li itšetlehile haholo-holo ka: (a) ho ntlafatsa khanyetso ea ho sag; (b) ho ntlafatsa bokhoni ba ho sebetsa; (c) ho ntlafatsa sekhahla sa ho boloka metsi sa seretse.
Mefuta ea tšebeliso:
Ether ea starch e loketse mefuta eohle ea (samente, gypsum, lime-calcium) putty ea leboteng le kantle, le mefuta eohle ea seretse se shebaneng le seretse se plastering.
E ka sebelisoa e le motsoako bakeng sa lihlahisoa tse thehiloeng samenteng, lihlahisoa tse thehiloeng ho gypsum le lihlahisoa tsa lime-calcium. Ether ea starch e na le tšebelisano e ntle le meaho le metsoako e meng; e loketse haholo metswako e omileng ea kaho joalo ka seretse, likhomaretsi, ho plaster le thepa ea ho phutholla. Li-ether tsa starch le li-ether tsa methyl cellulose (likereiti tsa Tylose MC) li sebelisoa hammoho metswakong e omileng ea kaho ho fana ka ho teteana ho hoholo, sebopeho se matla, ho hanyetsa ho sag le bonolo ba ho sebetsana. Viscosity ea li-mortar, likhomaretsi, li-plaster le li-roll render tse nang le li-ether tsa methyl cellulose tse phahameng li ka fokotsoa ka ho eketsoa ha li-ether tsa starch.
Nako ea poso: Phuptjane-13-2023