Phofo ea polymer e ka qhalwang hape (RDP)ke thepa ea phofo e phallang ka bolokolohi e hlahisoang ke ho fafatsa polymer ea emulsion ka ho e omisa. E sebelisoa haholo thepa ea kaho e kang seretse se kopantsoeng ka metsi, sekhomaretsi sa thaele, phofo ea putty, ho itlhophisa le ho itlhophisa ka ntle ho lebota. Tšobotsi ea eona ea bohlokoa ka ho fetisisa ke bokhoni ba eona ba ho qhalana hape ka metsing, e e khutlisetsa ho latex ea polymer e nang le litšobotsi tsa emulsion ea eona ea pele, ka hona e fana ka ho khomarela ho hoholo, ho tenyetseha le ho hanyetsa metsi thepa. Ts'ebetso ea tlhahiso ea RDP e kenyelletsa mehato e mengata ea bohlokoa, ho tloha khethong ea thepa e tala ho isa ho sephutheloana se felileng sa sehlahisoa. Tse latelang li tla hlalosa ts'ebetso ka kakaretso, likarolo tsa mantlha tsa tekheniki le taolo ea boleng.
1. Khetho ea Lisebelisoa tse Tala le Tokisetso ea Emulsion
Tlhahiso ea RDP e ipapisitse le li-polymer tsa emulsion. Mekhoa e tloaelehileng ea polymer e kenyelletsa vinyl acetate-ethylene copolymer (VAE), li-ester tsa acrylic, le li-ester tsa styrene-acrylic. Mekhoa e fapaneng ea polymer e khetholla litšobotsi tsa ts'ebetso ea RDP. Mohlala, mekhoa ea VAE e fana ka ho tenyetseha le ho khomarela ho babatsehang, e leng se etsang hore e lokele likhomaretsi tsa tile le litsamaiso tsa ho kenya mocheso; ha mekhoa ea emulsion ea acrylic e hloekileng e fana ka khanyetso ea boemo ba leholimo le khanyetso ea UV, e leng se etsang hore e sebelisoe hangata ho li-putty tsa leboteng kapa li-coatings tsa kantle.
Hangata li-emulsion li lokisoa ho sebelisoa mokhoa oa ho etsa polymerization ea emulsion. Ka ho sebelisa metsi e le mokhoa oa ho hasanya, li-emulsifier, li-initiator, le taolo ea mocheso, li-monomer li feta polymerization ho theha emulsion e tsitsitseng ea polymer. Mohato ona o hloka taolo e tiileng ea kabo ea boholo ba likaroloana, litaba tsa lintho tse tiileng le viscosity ho netefatsa botsitso le ts'ebetso ea sehlahisoa sa ho qetela.
2. Mokhoa oa ho Omisa ka Spray
Kamora hore emulsion e lokiswe, e fetoloa phofo ka ho omisa ka spray, e leng mohato wa bohlokwa tlhahisong ya RDP. Mehato ya tshebetso e kenyeletsa:
Ho fafatsa ka ho fafatsa: Emulsion e atolosoa hore e be marotholi a masesaane haholo ho sebelisoa nozzle e nang le khatello e phahameng kapa atomizer ea centrifugal. Bophara ba marotholi hangata bo laoloa ho isa ho mashome a li-micron ho netefatsa katleho ea ho omisa le ho tšoana ha phofo.
Ho Omisa Moya o Chesang: Marotholi a athomo a kopana le moya o chesang o mocheso o phahameng (hoo e ka bang 120-180°C), a etsa hore metsi a fetohe mouoane ka potlako mme a omise dikarolwana tsa emulsion hore e be dikarolwana tse tiileng. Ts'ebetso ena e hloka mocheso o leka-lekaneng le nako ho qoba ho chesa ho feteletseng ho ka etsang hore polymer e qhibilihe kapa e bole.
Ho Koahela Bokaholimo le Kalafo e Thibelang ho Khomarela: Kaha likaroloana tsa polymer li sekametse ho khomarela, colloid e sireletsang, joalo ka polyvinyl alcohol (PVA), hangata e eketsoa nakong ea ts'ebetso ea ho omisa ho etsa filimi e sireletsang. Sena se thibela phofo ho kopana 'me se thusa ho qhalana hape ka potlako metsing.
Tlhophiso le Pokello ea Moea: Kamora ho oma, phofo e felileng e bokelloa ho sebelisoa karohano ea sefefo le sefe sa mokotla ho netefatsa kabo e lekanang ea boholo ba likaroloana le ho tlosa lerōle le lesesaane.
3. Taolo le Phetoho ea Boleng
Taolo ea boleng e bohlokoa nakong eohle ea ts'ebetso ea tlhahiso. Matšoao a bohlokoa a liteko a kenyelletsa:
Kabo le Phallo ea Boholo ba Likaroloana: Netefatsa hore phofo e hasana ka ho lekana ka har'a motsoako o omileng, ho thibela ho kopana ha tsona.
Mongobo o setseng: Ka kakaretso o laoloa ka hare ho 1%-2% ho thibela mongobo le ho kopana ha lintho nakong ea polokelo.
Ho qhalana hape: Sena se leka sekhahla sa ho hasana ha phofo le ho hlaphoheloa ha boholo ba dikarolwana ka metsing, e leng matshwao a bohlokwa a ho lekola boleng ba RDP.
Matla a ho Khomarela le ho Tenyetseha: Sena se lekoa ka liteko tsa litsamaiso tsa seretse ho hlahloba phello ea sona ntlafatsong ea ts'ebetso ea thepa ea kaho.
Lihlahisoa tse ling li boetse li fetoloa ts'ebetso, joalo ka ho eketsa moemeli o sa rateng metsi ho ntlafatsa khanyetso ea metsi kapa ho kenya monomer e tenyetsehang ho ntlafatsa khanyetso ea mapetso. Liphetoho tsena li nolofalletsa RDP ho fihlela litlhoko tse ikhethileng tsa lits'ebetso tse fapaneng tsa meaho.
4. Sephutheloana le Polokelo
Lihlahisoa tse felileng tsa RDP hangata li pakoa ka mekotleng ea pampiri e kopaneng ea mekhahlelo e mengata e manehiloeng ka filimi e sa keneleng mongobo, ka boholo bo tloaelehileng ba 20 kg ka mokotla. Polokelo e lokela ho bolokoa hole le mongobo le khanya ea letsatsi e tobileng, 'me mocheso oa polokelo o lokela ho bolokoa pakeng tsa 5°C le 35°C. Pakete le polokelo e nepahetseng li bohlokoa ho netefatsa hore RDP e lula e le teng ka nako e telele (hangata likhoeli tse 12).
Mokhoa oa tlhahiso ea phofo ea polymer e ka qhaloang hapeke theknoloji e akaretsang e kopanyang k'hemistri ea polymer, polymerization ea emulsion, ho omisa ka spray le boenjiniere ba phofo. Ka taolo e matla ea boleng ho pholletsa le ts'ebetso eohle, ho kenyeletsoa khetho ea thepa e tala, ho lokisa emulsion, ho omisa ka spray le taolo ea boleng, re hlahisa lihlahisoa tsa RDP tse nang le thepa e ntle ea ho qhalana le ts'ebeliso. Tšebeliso ea eona e pharaletseng thepa ea sejoale-joale ea kaho ha e ntlafatse feela ts'ebetso ea kaho empa hape e khothaletsa nts'etsopele ea thepa ea kaho e tala.
Nako ea poso: Phato-29-2025