Lihlahisoa tsa vithamine kaofela li tsoa ho makhasi a tlhaho a k'hothone kapa makhasi a lehong, a hlahisoang ka etherification. Lihlahisoa tse fapaneng tsa cellulose li sebelisa li-etherifying agents tse fapaneng. The etherifying agent e sebelisoang ho hydroxyethyl cellulose (HEC) ke ethylene oxide, le etherifying agent e sebelisoang ho hydroxypropyl methylcellulose (HPMC) ke mefuta e meng ea etherifying agents. (Chloromethane le propylene oxide).
Ka pente ea 'nete ea szone le pente ea latex, hydroxyethyl cellulose e ka sebelisoa e le setenya.
Pente ea 'nete ea majoe e bonolo ho potlakisa ka lebaka la palo ea eona e kholo ea kakaretso le e ikhethang e kholo. Hoa hlokahala ho eketsa thickener ho eketsa viscosity ea eona ho kopana le viscosity e hlokahalang bakeng sa ho fafatsa nakong ea kaho, ho ntlafatsa botsitso ba eona ba polokelo, le ho finyella matla a itseng.
Haeba u batla pente ea 'nete ea majoe ho finyella matla a matle, ho hanyetsa metsi hantle le ho hanyetsa boemo ba leholimo, khetho ea lihlahisoa tse tala le moralo oa foromo ke tsa bohlokoa haholo.
Tlas'a maemo a tloaelehileng, palo ea emulsion e sebelisoang ka pente ea boleng bo phahameng ea majoe e tla ba e phahameng haholo.
Ka mohlala, ka lithane tse ngata tsa pente ea majoe, ho ka 'na ha e-ba le 300kg ea emulsion e hloekileng ea acrylic le 650kg ea lehlabathe la majoe a tlhaho a mebala. Ha litaba tse tiileng tsa emulsion e le 50%, bophahamo ba 300kg ba emulsion ka mor'a ho omisa bo ka ba lilithara tse 150, 'me bophahamo ba 650kg ba lehlabathe bo ka bang 228 litres. Ka mantsoe a mang, PVC (pigment volume concentration) ea pente ea 'nete ea lejoe ke 60% ka nako ena, hobane likaroloana tsa lehlabathe le mebala li kholo ebile li sa tloaeleha ka sebōpeho,' me tlas'a boemo ba ho aroloa ha karoloana e itseng, e omisitsoeng. pente ea 'nete ea majoe e ka' na ea e-ba ka har'a CPVC (critical mass concentration). Pigment volume concentration) hoo e ka bang. Mabapi le ho teteaneng, haeba u khetha selulose e nang le viscosity e loketseng, pente ea sebele ea majoe e ka etsa filimi ea pente e batlang e le e feletseng le e teteaneng ho finyella litlhoko tse tharo tse kholo tsa ts'ebetso ea pente ea sebele ea majoe. Haeba litaba tsa emulsion ea 'nete ea pente ea majoe li le tlase, ho kgothaletswa ho sebelisa selulose e nang le viscosity e phahameng e le motenya (joalo ka 100,000 viscosity), haholo-holo ka mor'a hore theko ea selulose e eketsehe, e ka fokotsang palo ea selulose e sebelisoang le ho etsa lejoe la sebele Ts'ebetso ea pente e ntle.
Baetsi ba bang ba lichelete ba 'nete ba pente ea majoe ba sebelisa hydroxypropyl methylcellulose sebakeng sa hydroxyethyl cellulose bakeng sa litšenyehelo le lintlha tse ling.
Ha ho bapisoa le mefuta e 'meli ea selulose, hydroxyethyl cellulose e na le ho boloka metsi hantle, e ke ke ea lahleheloa ke ho boloka metsi ka lebaka la gelatin mocheso o phahameng,' me e na le ho hanyetsa hlobo ho itseng. Bakeng sa ho nahanisisa ka ts'ebetso, ho kgothaletswa ho sebelisa hydroxyethyl cellulose e nang le viscosity ea 100,000 e le motenya bakeng sa pente ea sebele ea majoe.
Nako ea poso: Apr-28-2023