Phofo ea polymer e qhalakantsoeng hape (RDPs) e bapala karolo ea bohlokoa indastering e fapaneng, ho kenyeletsoa kaho, likhomaretsi le lipente. Phofo ena e sebelisoa haholo bakeng sa ho ntlafatsa thepa ea thepa e tiisang samente, ho ntlafatsa ho khomarela, ho tenyetseha le ho tšoarella. Ho utloisisa ts'ebetso ea tlhahiso ea RDPs ho bohlokoa bakeng sa bahlahisi ho netefatsa lihlahisoa tsa boleng bo holimo.
Lisebelisoa tse so fetoloe :
Tlhahiso ea phofo ea polymer e qhalakanngoang hape e qala ka ho khetha ka hloko thepa e tala e susumetsang litšobotsi tsa sehlahisoa sa ho qetela. Likarolo tsa mantlha li kenyelletsa li-resin tsa polymer, li-colloid tse sireletsang, li-plasticizer le lintho tse ling tse tlatsetsang.
Li-resin tsa Polymer: Ethylene-vinyl acetate (EVA), vinyl acetate-ethylene (VAE), le li-polymer tsa acrylic li sebelisoa hangata e le li-resin tse kholo tsa polymer. Li-resin tsena li fana ka ho khomarela, ho tenyetseha le ho hanyetsa metsi ho RDP.
Di-Colloid tse Sireletsang: Di-colloid tse sireletsang tse phelang ka metsi tse kang polyvinyl alcohol (PVA) kapa di-ether tsa cellulose di eketsoa ho tsitsisa dikarolwana tsa polymer nakong ya ho omisa le ho boloka, ho thibela ho kopana.
Li-plasticizer: Li-plasticizer li ntlafatsa ho tenyetseha le ho sebetsa ha li-RDP. Li-plasticizer tse tloaelehileng li kenyelletsa li-glycol ether kapa li-polyethylene glycols.
Lintho tse eketsoang: Lintho tse ling tse kang lintho tse hasanyang, tse thickeners, le lintho tse kopanyang li ka kenyelletsoa ho ntlafatsa thepa e itseng joalo ka ho qhalana, rheology, kapa matla a mechini.
Mekhoa ea ho Sebetsa:
Tlhahiso ea phofo ea polymer e qhalakanngoang hape e kenyelletsa mehato e 'maloa e rarahaneng ea ts'ebetso, ho kenyeletsoa le polymerization ea emulsion, ho omisa ka spray, le lits'ebetso tsa kamora kalafo.
Ho lokisa Emulsion:
Ts'ebetso ena e qala ka emulsion polymerization, moo li-monomer, metsi, li-emulsifier, le li-initiator li tsoakiloeng ka har'a reactor tlas'a maemo a laoloang a mocheso le khatello. Li-monomer li etsa polymerization ho etsa likaroloana tsa latex tse hasaneng ka metsing. Khetho ea li-monomer le maemo a karabelo li khetholla sebopeho le thepa ea polymer.
Ho Tsitsisa le ho Kopana ha Mahe:
Kamora ho polymerization, latex e feta botsitsong ka ho eketsa li-colloid tse sireletsang le li-stabilizer. Mohato ona o thibela ho kopana ha likaroloana 'me o netefatsa botsitso ba ho hasana ha latex. Lisebelisoa tsa ho kopana li ka kenngoa ho susumetsa ho kopana ho laoloang ha likaroloana tsa latex, ho etsa coagulum e tsitsitseng.
Ho omisa ka Spray:
Ho hasana ha latex ho tsitsitseng ho ntan'o fepuoa ka har'a sesebelisoa sa ho omisa ka spray. Ka phaposing ea ho omisa ka spray, ho hasana ho etsoa marotholi a manyane ho sebelisoa li-nozzle tse nang le khatello e phahameng. Moea o chesang o kenngoa ka nako e le 'ngoe ho fetola metsi hore a fetohe mouoane, ho siea likaroloana tse tiileng tsa polymer. Maemo a ho omisa, ho kenyeletsoa mocheso oa moea o kenang, nako ea bolulo, le sekhahla sa phallo ea moea, li susumetsa sebopeho sa likaroloana le thepa ea phofo.
Kamora Kalafo:
Kamora ho omiswa ka spray, phofo ea polymer e hlahang e feta lits'ebetsong tsa kamora kalafo ho ntlafatsa ts'ebetso ea eona le botsitso ba polokelo. Ts'ebetso tsena li ka kenyelletsa phetoho ea bokaholimo, granulation le sephutheloana.
a. Phetoho ea Bokaholimo: Li-agent tse sebetsang holim'a bokaholimo kapa li-agent tse hokahanyang li ka sebelisoa ho fetola litšobotsi tsa bokaholimo ba likaroloana tsa polymer, ho ntlafatsa ho qhalana ha tsona le ho lumellana ha tsona le lisebelisoa tse ling.
b. Ho ntsha dikokwana-hloko: Ho ntlafatsa ho sebetsana le ho qhalana ha tsona, phofo ya polymer e ka feta ho ntsha dikokwana-hloko ho hlahisa boholo bo tshwanang ba dikarolwana le ho fokotsa ho thehwa ha lerole.
c. Sephutheloana: Li-RDP tsa ho qetela li pakiloe ka har'a lijana tse hanelang mongobo ho thibela ho monngoa ha mongobo le ho boloka botsitso ba tsona nakong ea polokelo le lipalangoang.
Mehato ea Taolo ea Boleng:
Taolo ea boleng e bohlokoa nakong eohle ea tlhahiso ho netefatsa botsitso le ts'epo ea thepa ea phofo ea polymer e qhalanngoang hape. Litekanyetso tse 'maloa tsa bohlokoa lia hlahlojoa le ho laoloa mehatong e fapaneng:
Boleng ba Thepa e Tala: Tlhahlobo e tebileng le liteko tsa thepa e tala, ho kenyeletsoa le li-polymer, li-colloid le lintho tse ling tse eketsang, li etsoa ho netefatsa boleng ba tsona, bohloeki le ho lumellana ha tsona le ts'ebeliso e reriloeng.
Tlhokomelo ea Ts'ebetso: Litekanyetso tsa bohlokoa tsa ts'ebetso tse kang mocheso oa karabelo, khatello, sekhahla sa phepo ea monomer, le maemo a ho omisa li lula li hlahlojoa le ho lokisoa ho boloka boleng ba sehlahisoa le botsitso.
Tlhaloso ea Likaroloana: Kabo ea boholo ba likaroloana, sebopeho, le thepa ea bokaholimo ba phofo ea polymer li hlahlojoa ho sebelisoa mekhoa e kang ho fafatsa ha laser, microscopy ea elektrone, le tlhahlobo ea sebaka sa bokaholimo.
Teko ea Tshebetso: Phofo ea polymer e qhalakanngoang hape e feta litekong tse pharaletseng tsa ts'ebetso ho lekola matla a eona a sekhomaretsi, ho thehoa ha filimi, ho hanyetsa metsi, le thepa ea mechini ho latela maemo a indasteri le litlhoko tsa bareki.
Teko ea Botsitso: Liteko tse potlakileng tsa botsofali le lithuto tsa botsitso li etsoa ho lekola botsitso ba nako e telele ba RDP tlas'a maemo a fapaneng a polokelo, ho kenyeletsoa le liphetoho tsa mocheso le mongobo.
Tlhahiso ea phofo ea polymer e qhalakanngoang hape e kenyelletsa letoto la mehato e rarahaneng, ho tloha ho polymerization ea emulsion ho isa lits'ebetsong tsa ho omisa ka spray le kamora kalafo. Ka ho laola ka hloko lisebelisoa tse tala, liparamente tsa ts'ebetso, le mehato ea taolo ea boleng, bahlahisi ba ka netefatsa boleng bo tsitsitseng le ts'ebetso ea RDP bakeng sa lits'ebetso tse fapaneng indastering ea kaho, likhomaretsi le lipente. Ho utloisisa mathata a ts'ebetso ea tlhahiso ho bohlokoa bakeng sa ho ntlafatsa litšobotsi tsa sehlahisoa le ho fihlela litlhoko tse ntseng li fetoha tsa bareki 'marakeng.
Nako ea poso: Hlakubele-12-2024