Ho Batla PVA Powder: Mehato e 3 ea ho Etsa Tharollo ea PVA bakeng sa Likopo tse fapaneng

Polyvinyl acetate (PVA) phofo ke polima e nang le mefuta e mengata e ka qhibilihang ka metsing ho etsa tharollo ka lisebelisoa tse fapaneng, tse kenyelletsang li-adhesive, li-coatings le li-emulsion. Mona ke mehato e meraro ea ho etsa tharollo ea PVA bakeng sa lits'ebetso tse fapaneng:

1. Ho lokisa tharollo ea PVA:
   • Lekanya palo e lakatsehang ea phofo ea PVA u sebelisa sekala. Chelete e tla fapana ho latela mohopolo o lakatsehang oa tharollo le ts'ebeliso e khethehileng.
   • Butle-butle eketsa phofo e lekantsoeng ea PVA ho metsi a hloekisitsoeng kapa a hloekisitsoeng ka sejaneng se hloekileng. Ho bohlokoa ho sebelisa metsi a boleng bo holimo ho thibela litšila ho ama thepa ea tharollo.
   • Hlohlelletsa motsoako ka mokhoa o tsoelang pele o sebelisa motsoako oa mochini kapa molamu o hlohlelletsang ho etsa bonnete ba ho hasana ho tšoanang ha phofo ea PVA metsing.
   • Tsoela pele ho hlohlelletsa ho fihlela phofo ea PVA e qhibiliha ka ho feletseng metsing 'me ha ho na lihlopha tse bonahalang kapa likaroloana tse setseng. Ts'ebetso ena e ka 'na ea nka nako e itseng, ho itšetlehile ka ho bokellana ha tharollo le mocheso oa metsi.
2. Taolo ea Mocheso:
   • Ho futhumatsa metsi ho ka potlakisa ts'ebetso ea ho qhibiliha le ho ntlafatsa ho qhibiliha ha phofo ea PVA. Leha ho le joalo, ho bohlokoa ho qoba mocheso o feteletseng, kaha o ka theola polymer mme oa ama thepa ea tharollo.
   • Boloka mocheso ka har'a sebaka se loketseng ho ipapisitse le sehlopha se ikhethileng sa phofo ea PVA e sebelisoang. Ka kakaretso, mocheso o pakeng tsa 50 ° C le 70 ° C o lekane bakeng sa ho qhala boholo ba phofo ea PVA ka katleho.
3. Taolo ea Boleng le Teko:
   • Kamora ho lokisa tharollo ea PVA, etsa liteko tsa taolo ea boleng ho netefatsa hore e fihlela litlhoko tse lakatsehang le litlhoko tsa ts'ebetso bakeng sa ts'ebeliso e reriloeng.
   • Lekola viscosity, pH, litaba tse tiileng, le lisebelisoa tse ling tse amehang tsa tharollo ea PVA u sebelisa mekhoa le lisebelisoa tse nepahetseng tsa tlhahlobo.
   • Fetola liparamente tsa tlhahiso kapa ts'ebetso kamoo ho hlokahalang ho ntlafatsa thepa ea tharollo ea PVA bakeng sa lits'ebetso tse ikhethileng.

Ka ho latela mehato ena le ho ela hloko taolo ea mocheso le mekhoa ea ho laola boleng, u ka atleha ho lokisetsa tharollo ea PVA e loketseng mefuta e mengata ea mekhoa e mengata. Ho bohlokoa ho boloka tharollo hantle ka sejaneng se hloekileng, se tiisitsoeng ka thata ho thibela tšoaetso le ho boloka botsitso ha nako e ntse e ea. Ntle le moo, buisana le maqephe a data a tekheniki le litataiso tse fanoeng ke moetsi bakeng sa likhothaletso tse ikhethileng mabapi le ho lokisa tharollo ea PVA bakeng sa lits'ebetso tse fapaneng.