PET ke eng? - Tlhahlobo e Felletseng ea Polyethylene Terephthalate
PET, kapa Polyethylene Terephthalate, ke thepa ea polymer e sebelisoang haholo indastering ea lik'hemik'hale. Sehloohong sena, re tla fana ka tlhahlobo e tebileng ea tlhaloso ea PET, libaka tsa kopo ea eona, ts'ebetso ea tlhahiso le melemo ea eona, e le ho fa babali kutloisiso e feletseng ea PET e le boitsebiso ba bohlokoa.
Tlhaloso le Lintho tsa Motheo tsa PET
PET ke eng? Ka lik'hemik'hale, PET ke polymer ea thermoplastic e entsoeng ke polymerisation ea terephthalic acid le ethylene glycol.Sebopeho sa lik'hemik'hale sa PET se fana ka thepa e babatsehang ea mechine e kang matla a phahameng, ho hanyetsa mocheso le ho pepeseha hantle. Thepa ena e etsa hore PET e be thepa ea khetho maemong a mangata a ts'ebeliso, haholo lekaleng la ho paka.
Libaka tse ka sehloohong tsa ts'ebeliso ea PET
PET e sebelisoa lits'ebetsong tse fapaneng, e shebane le likarolo tse peli tse kholo: thepa ea ho paka le tlhahiso ea fiber. Indastering ea ho paka, PET e atisa ho sebelisoa ha ho etsoa lihlahisoa tse kang libotlolo tsa polasetiki, lijana tsa lijo le lifilimi, moo ponaletso ea eona le thepa e ntle ea thibelo ea khase e tiisang hore lijo tse ka har'a sephutheloana li lula li le ncha.PET e boetse e sebelisoa e le thepa e tala bakeng sa likhoele tsa maiketsetso, tse sebelisoang haholo indastering ea masela, haholo-holo tlhahiso ea likhoele tsa polyester. Liaparo tse entsoeng ka likhoele tsa polyester li apere ka thata, ho bonolo ho li hlatsoa 'me li potlakile ho omisa, e leng se etsang hore e be tse loketseng bakeng sa ho apara letsatsi le leng le le leng.
Mokhoa oa tlhahiso ea PET
Ho utloisisa hore na PET ke eng ho boetse ho hloka ho shebisisa ka botebo tšebetso ea eona ea tlhahiso, e etsoang ka litsela tse peli tse ka sehloohong: mohato o le mong (esterification e tobileng) le mehato e ’meli (ester exchange). Ts'ebetsong ea mohato o le mong, terephthalic acid e sebetsa ka ho toba le ethylene glycol ka mocheso o phahameng le likhatello tsa ho hlahisa PET, athe ka mehato e 'meli, ethylene glycol esters e thehoa pele, ebe polycondensation e etsoa ho hlahisa PET. molemong oa ho lokisa sehlahisoa se bopehileng.
Melemo le Moshoelella oa PET
PET ke eng? Ho ea ka pono ea ts'ebetso, melemo ea PET e itšetlehile ka mokhoa o motle oa ho sebelisoa hape; Lihlahisoa tsa PET li ka sebelisoa hape ka pyrolysis, tšebeliso ea lik'hemik'hale le mekhoa e meng ea ho fokotsa tšilafalo ea tikoloho, 'me matla a phahameng a PET le thepa e bobebe le eona e fana ka monyetla oa ho fokotsa tšebeliso ea thepa le litšenyehelo tsa lipalangoang. Litšobotsi tsena li etsa hore PET e be e 'ngoe ea lisebelisoa tse tala tse hlokahalang indastering ea sejoale-joale.
Qetello
Ho akaretsa, PET ke eng? Ke lisebelisoa tse phahameng tsa polymer tse nang le mefuta e mengata ea lisebelisoa.PET e phetha karolo ea bohlokoa indastering ea morao-rao ka lebaka la thepa ea eona e babatsehang ea physicochemical, mefuta e mengata ea likopo le mekhoa e metle ea ho sebelisoa hape. Ebang ke ka thepa ea ho paka bophelong ba letsatsi le letsatsi kapa tlhahiso ea fiber indastering ea masela, tšusumetso ea PET e hohle. Ka hona, kutloisiso e tebileng ea hore na PET ke eng ke ea bohlokoa bakeng sa ho utloisisa mekhoa ea lisebelisoa tsa morao-rao tsa lik'hemik'hale.