Liaparo tsa sephethephethe li phetha karolo ea bohlokoa ho netefatsa polokeho le nako e telele ea matšoao a litsela le matšoao. Liaparo tsena li tlas'a maemo a thata a tikoloho, sephethephethe se boima le mahlaseli a UV, kahoo lisebelisoa tsa boleng bo phahameng li tlameha ho sebelisoa ha li etsoa. Rutiletitanium dioxide(TiO2) ke motsoako o ka sehloohong oa liphahlo tsa sephethephethe 'me e tsebahala ka ho tšoarella ha eona ho ikhethang le ho hanyetsa UV. Ha tlhoko ea liphahlo tsa sephethephethe tse sebetsang hantle e ntse e eketseha, ho khetha rutile TiO2 ho tsoa ho mofani oa thepa ea tšepahalang e fetohile ntlha ea bohlokoa ea ho fihlela ts'ebetso e phahameng ea ho roala.
Morekisi ea ka sehloohong oa rutile titanium dioxide o phetha karolo ea bohlokoa ho tsamaiseng boqapi ba liphahlo tsa lipalangoang. Barekisi bana ba fana ka rutile TiO2 ea boleng bo holimo e fihlelang litlhoko tse thata tsa lipente tsa ho tšoaea litsela. Ka ho sebelisa thepa e tsoetseng pele ea rutile ea TiO2, joalo ka matla a eona a ho pata, boemo ba leholimo le ho hanyetsa chalking, barekisi ba thusa bahlahisi ba liphahlo ho etsa liphahlo tsa sephethe-phethe tse nang le ts'ebetso e phahameng le ho tšoarella.
Baetsi ba pente ba itšetlehile ka barekisi ba rutile titanium dioxide ho ba fa mohloli o tsitsitseng le o ka tšeptjoang oa li-pigments tsa boleng bo phahameng. Tšebeliso ea rutile titanium dioxide ka liphahlo tsa sephethephethe e tiisa hore matšoao a litsela le matšoao a lula a bonahala haholo 'me a tšoarella esita le maemong a thata ka ho fetisisa. Sena se bohlokoa haholo ho netefatsa polokeho ea mebileng le taolo e nepahetseng ea sephethephethe.
Ntle le thepa ea eona ea 'mele, rutile titanium dioxide e boetse e na le melemo ea tikoloho. Joaloka thepa e tsitsitseng, e sa sebetseng, rutile titanium dioxide e thusa ho lelefatsa bophelo ba liaparo tsa sephethephethe, ho fokotsa tlhokahalo ea tlhokomelo le ho penta hape. Sena ha se boloke litšenyehelo feela empa se fokotsa tšusumetso ea tikoloho mesebetsing ea ho tšoaea litsela.
Ho feta moo, litšebelisano pakeng tsa barekisi ba titanium dioxide ea rutile le bahlahisi ba likoahelo li nolofalitse nts'etsopele ea mekhoa e mecha ea ho rarolla mathata a itseng indastering ea liphahlo tsa lipalangoang. Mohlala, ho sebelisa limaraka tsa rutile tsa TiO2 tse tsoetseng pele tse nang le kabo ea boholo ba likaroloana tse tsamaellanang ho ka hlahisa liphahlo tsa sephethe-phethe tse nang le phallo e ntlafalitsoeng le thepa e lekantsoeng, e leng se etsang hore ho be le liphahlo tse boreleli, tse tšoanang.
Tšebelisano pakeng tsa bafani ba thepa le bahlahisi e boetse e thusa ho nts'etsopele ea "low-VOC" (volatile organic compounds) le liphahlo tsa sephethephethe tse se nang tikoloho. Ka ho kopanyarutile TiO2ka liphekolo tse ntlafalitsoeng holim'a metsi, liphahlo tsena li kopana le melaoana e thata ea tikoloho ha li ntse li boloka ts'ebetso e phahameng le ho tšoarella.
Ha tlhoko ea liphahlo tsa lipalangoang e ntse e tsoela pele ho fetoha, barekisi ba rutile titanium dioxide ba ka pele ho fana ka tharollo e ikhethileng ho fihlela litlhoko tse ikhethang tsa indasteri. Ka ho fana ka ts'ehetso ea tekheniki, nts'etsopele ea sehlahisoa sa tloaelo le boiphihlelo bo felletseng ba kopo, barekisi bana ba thusa baetsi ba liphahlo ho etsa liphahlo tse ncha le tse tšoarellang tsa lipalangoang tse fihlelang litekanyetso tse phahameng tsa ts'ebetso le boikarabello ba tikoloho.
Ka bokhutšoanyane, tšebeliso ea rutile titanium dioxide e tsoang ho mofani oa thepa ea ka sehloohong e etsa tlatsetso e kholo ho ncha le tsoelo-pele ea liaparo tsa lipalangoang. Thepa e phahameng ka ho fetisisa ea rutile titanium dioxide e kopantsoeng le tsebo le ts'ehetso e fanoeng ke mofani oa thepa e entse hore ho be le tsoelo-pele ea liphahlo tsa sephethephethe tse sebetsang hantle, tse tšoarellang le tse se nang tikoloho. Ha indasteri e ntse e tsoela pele ho fetoha, tšebelisano lipakeng tsa barekisi ba titanium dioxide ea rutile le bahlahisi ba liphahlo e tla bapala karolo ea bohlokoa ho nts'etsapele boqapi le ho fihlela litlhoko tse fetohang tsa 'maraka oa lipalangoang.
Nako ea poso: Aug-16-2024