Lihlahisoa tsa cellulose li nkiloe ho tsoa ho pulp ea k'hothone ea tlhaho kapa pulp ea lehong ka etherification. Lihlahisoa tse fapaneng tsa cellulose li sebelisa li-agent tse fapaneng tsa etherifying. Hypromellose HPMC e sebelisa mefuta e meng ea li-agent tse etherifying (chloroform le 1,2-epoxypropane), ha hydroxyethyl cellulose HEC e sebelisa li-agent tse etherifying tsa Oxirane. Hydroxyethyl cellulose e ka sebelisoa e le setenya penteng ea 'nete ea majoe le pente ea latex. Ka lebaka la bongata ba eona bo kopaneng, matla a khoheli a itseng, pula, e hloka ho eketsa setenya ho eketsa viscosity ea eona, e le ho fihlela litlhoko tsa viscosity ea spray ea kaho, le ho ntlafatsa botsitso ba eona ba polokelo, le ho fihlela matla a itseng. Ho fihlela matla a matle, khanyetso e ntle ea metsi le khanyetso ea boemo ba leholimo, khetho ea lisebelisoa tse tala le moralo oa sebopeho ke tsa bohlokoa haholo.
Ka kakaretso, palo ea pente ea 'nete ea majoe ea boleng bo holimo e tla ba holimo. Mohlala, thane ea pente ea 'nete ea majoe e ka ba le 300 kg ea emulsion e hloekileng ea acrylic le 650 kg ea lehlabathe la 'mala oa tlhaho. Ha litaba tse tiileng tsa emulsion e le 50%, bophahamo ba emulsion ea 300 kg kamora ho omisa ke lilithara tse ka bang 150, 650 Kg ea lehlabathe ke lilithara tse ka bang 228. Ke hore, nakong ena PVC (khohlano ea bophahamo ba 'mala oa pigment) ea pente ea 'nete ea majoe ke 60%, hobane likaroloana tsa lehlabathe le 'mala li kholo ebile ha li na sebopeho se tloaelehileng, tlas'a boemo ba kabo e itseng ea boholo ba likaroloana, kamora ho omisa pente ea 'nete ea majoe e ka ba ka har'a CPVC (khohlano ea bophahamo ba 'mala oa pigment) hoo e ka bang. Bakeng sa sethibela-khang, haeba ho khethoa viscosity e nepahetseng ea cellulose, filimi e felletseng le e teteaneng e ka etsoa ho fihlela litlhoko tse tharo tse kholo tsa ts'ebetso ea pente ea 'nete ea majoe. Haeba dikahare tsa emulsion di le tlase, ho kgothaletswa ho sebedisa viscosity e phahameng ya cellulose e le sethibisi (mohlala, viscosity e 100,000), haholoholo kamora hore theko ya cellulose e eketsehe, e leng se ka fokotsang bongata ba cellulose e sebediswang, mme hape se ka etsa hore tshebetso ya pente ya lejwe la nnete e be betere. Bahlahisi ba bang ba pente ya lejwe la nnete e theko e tlase ba nkile sebaka sa hydroxyethyl cellulose ka hypromellose ka lebaka la ditjeo le dintho tse ding tse amehang. Ha e bapiswa le mefuta e mmedi ya cellulose, hydroxyethyl cellulose e na le bokgoni bo betere ba ho tshwara metsi, ha e lahlehelwe ke bokgoni ba ho tshwara metsi ka lebaka la gel mochesong o phahameng, mme e na le kganyetso e itseng ya hlobo. Bakeng sa tshebetso, ho kgothaletswa ho sebedisa viscosity e 100,000 hydroxyethyl cellulose e le sethibisi sa pente ya lejwe la nnete.
Nako ea poso: Phupu-24-2023