Lipolasetiki tse senyehang li ka aroloa ka li-plastiki tse senyehang tse ipapisang le bio le li-plastiki tse senyehang tse thehiloeng ho petroleum ho latela mohloli oa metsoako ea tsona. Li sebelisitsoe makaleng a mangata joalo ka litafole tse lahloang, ho paka, temo, likoloi, kalafo, masela, jj. Joale baetsi ba lihlahisoa tse kholo tsa lefatše basebelisitse. Lipolasetiki tse senyehang habonolo li leka ho nka menyetla ea mmaraka pele ho nako. Joale haeba metsoalle ea rona indastering ea polasetiki e batla ho fumana karolo ea indasteri ea lisebelisoa tse senyehang, re lokela ho tsoela pele joang? U ka khetholla joang lipolasetiking tse senyehang tse thehiloeng ho bio le petroleum? Ke lisebelisoa life le mahlale a morao-rao a moralo oa sehlahisoa ke senotlolo, 'me thepa e senyehang e ka bola tlas'a maemo afe ho fihlela maemo ...
Polypropylene (Polypropylene) ke sesebelisoa sa polima se sebelisoang haholo, se bitsoang PP, se nang le thepa e ntle ea thermoplastic. Ka lebaka la thepa ea 'mele ea eona e se nang' mala, e se nang monko le e se nang chefo, hajoale e sebelisoa e le polasetiki e bobebe e nang le sepheo se sengata. Polypropylene e na le ts'ebetso e ntle haholo, polokeho le chefo, litheko tse theko e tlase ebile ho bonolo ho li fumana, 'me lihlahisoa tse lokisitsoeng ke lisebelisoa tse bobebe le tse bolokang tikoloho. E sebelisitsoe ho paka lihlahisoa, lihlahisoa tsa lik'hemik'hale, likarolo tsa likoloi, liphaephe tsa kaho le likarolo tse ling.
1. Kenyelletso ea tšebetso ea tlhahiso ea lihlahisoa tsa polypropylene
Lilemong tsa bo-1950, lipatlisiso tsa mahlale a polypropylene synthesis li qalile. Ho tloha mokhoeng o tloaelehileng haholo oa solvent polymerization (o tsejoang hape e le mokhoa oa seretse) ho ea ho mokhoa o tsoetseng pele haholo oa tharollo ea polasetiki, e se e ntlafalitsoe ho fihlela mokhatlong oa hona joale oa mokelikeli oa bongata le khase ea bongata ba khase. Ka nts'etsopele e tsoelang pele ea ts'ebetso ea tlhahiso, polasetiki ea khale ka ho fetisisa ea solvent Molao ha o sa sebelisoa indastering.
Ho pholletsa le theknoloji e tsoetseng pele ea tlhahiso ea lefatše ea polypropylene, tlhahiso ea basell ea polypropylene ea selemo le selemo e feta 50% ea kakaretso ea lefats'e, haholo-holo ho sebelisa ts'ebetso ea polase ea karolo ea khase ea Spheripol habeli; Ntle le moo, Spherizone polypropylene synthesis e qapiloeng ke basell e ntlafalitsoe mme e kentsoe tlhahiso. Theknoloji, ts'ebetso ea Borstar polypropylene synthesis e hlahisitsoeng le ho hlahisoa ke Borealis e sebelisitsoe haholo.
1.1 Ts'ebetso ea Spheripol
Theknoloji ea polase ea polypropylene ea Spheripol e habeli-loop e ntlafalitsoeng mme e kenngoe tšebetsong ke basell ke mofuta o mocha oa boiphihlelo ba polypropylene. Ha li bapisoa le ts'ebetso ea moetlo ea tlhahiso, lihlahisoa tse hlahisitsoeng tsa polypropylene li na le boleng bo holimo ebile li tsoa haholo.
Kakaretso ea meloko e mene ea li-catalyst e ntlafalitsoe. Hajoale, setsi sa polypropylene synthesis se nang le sebopeho sa habeli se entsoe, 'me lihlahisoa tse ntle tsa polypropylene li hlahisitsoe motheong oa ts'ebetso ena. Sebopeho sa li-tube tse peli se ka fumana lihlahisoa tsa polypropylene tse nang le ts'ebetso e ntle ka ho fetola khatello ts'ebetsong ea tšebetso, le ho hlokomela taolo ea bongata ba polypropylene macromolecule le morphology ea polypropylene macromolecule; mokelikeli oa moloko oa bone o fumanoeng kamora lintlafatso tse ngata, Sehlahisoa sa catalyzed polypropylene se na le bohloeki bo phahameng, lisebelisoa tse betere tsa mochini, le khanyetso e phahameng ea ho roala.
Ka lebaka la ts'ebeliso ea sebopeho sa tšebetso ea li-tube tsa makhetlo a mabeli, ts'ebetso ea tlhahiso e ka ba bonolo haholoanyane; khatello ea karabelo e eketsehile, ka hona, karolo ea hydrogen ts'ebetsong eohle ea tlhahiso ea eketseha, e ntlafatsang likarolo tse fapaneng tsa lihlahisoa tsa polypropylene ho isa bohōleng bo itseng; ka nako e ts'oanang, ho ipapisitsoe le sebopeho sa li-tube tse peli tse ntle haholo E khona ho hlahisa li-macromolecule tsa boleng bo holimo haholo le lihlahisoa tsa polypropylene tsa boleng bo bonyenyane, e le hore boholo ba limolek'hule tsa kabo ea lihlahisoa tse hlahisitsoeng tsa polypropylene bo kholo, mme polypropylene e fumanoeng lihlahisoa li ts'oana haholo.
Sebopeho sena se ka khothaletsa betere phetoho ea mocheso lipakeng tsa lisebelisoa tsa karabelo. Haeba li kopantsoe le li-catalyst tsa metallocene tse tsoetseng pele haholo, lihlahisoa tsa polypropylene tse nang le ts'ebetso e ntle li tla lokisoa nakong e tlang. Sebopeho sa habeli sa senotlolo se ntlafatsa katleho ea tlhahiso, se etsa hore ts'ebetso ea tlhahiso e be bonolo le ho tenyetseha, 'me ho isa bohōleng bo itseng e eketsa tlhahiso ea lihlahisoa tsa polypropylene.
1.2 Ts'ebetso ea Spherizone
Ka lebaka la tlhoko e ntseng e phahama ea hajoale ea bimodal polypropylene, basell o hlahisitse ts'ebetso e ncha ea tlhahiso. Ts'ebetso ea Spherizone e sebelisoa haholo bakeng sa tlhahiso ea bimodal polypropylene. Ntlafatso ea mantlha ea ts'ebetso ea tlhahiso ke hore ho sekontiri se ts'oanang, sekontiri se arotsoe, 'me mocheso oa karabelo, khatello ea khatello le khatello ea karabelo sebakeng ka seng sa karabelo li ka laoloa ka bonngoe. Motsoako oa haedrojene o ajoa sebakeng sa karabelo ka maemo a fapaneng a tlhahiso le maemo a tlhahiso a laolehang nakong ea kholo e tsoelang pele ea ketane ea limolek'hule tsa polypropylene ha ho etsoa polypropylene. Ka lehlakoreng le leng, bimodal polypropylene e nang le ts'ebetso e ntle e hlophisitsoe. Ka lehlakoreng le leng, sehlahisoa se fumanoeng sa polypropylene se tšoana hantle.
1.3 Ts'ebetso ea Borstar
Ts'ebetso ea Borstar polypropylene synthesis e ipapisitse le ts'ebetso ea polypropylene synthesis ea basell Corporation ke Borealis, e ipapisitse le sekontiri sa sebopeho sa habeli, mme sekontiri sa bethe se nang le khase se hokahantsoe ka tatellano ka nako e ts'oanang, ka hona se hlahisa polypropylene e nang le ts'ebetso e ntle . sehlahisoa.
Pele ho sena, lits'ebetso tsohle tsa polypropylene synthesis li ne li laola mocheso oa karabelo ka 70 ° C ho qoba ho hlahisa li-bubble nakong ea tlhahiso le ho etsa hore lihlahisoa tsa polypropylene li ts'oane. Ts'ebetso ea Borstar e entsoeng ke Borealis e lumella mocheso o phahameng oa ts'ebetso, o ka fetang boleng ba bohlokoa ba ts'ebetso ea propylene. Keketseho ea mocheso e boetse e khothaletsa keketseho ea khatello ea tšebetso, mme ha ho na malepa ts'ebetsong, e leng mofuta oa ts'ebetso. Ke ts'ebetso e ntle ea polypropylene synthesis.
Litšobotsi tsa hajoale tsa ts'ebetso li akaretsoa ka tsela e latelang: Ntlha ea pele, ts'ebetso ea ts'ebetso e phahame; ea bobeli, sekontiri sa karolo ea khase se hokahane ka letoto motheong oa sekontiri sa li-tube tse peli, se ka laolang boima ba limolek'hule le morpholoji ea macromolecule ea maiketsetso; Taba ea boraro, tlhoro e ngoe le e ngoe e fumanoeng nakong ea tlhahiso ea bimodal polypropylene e ka fihlela kabo e fokolang ea limolek'hule, 'me boleng basehlahisoa sa bimodal bo betere; ea bone, mocheso o sebetsang oa eketseha, 'me limolek'hule tsa polypropylene li thibeloa ho qhibiliha ho The phenomenon of propylene e ke ke ea etsa hore lihlahisoa tsa polypropylene li khomarele lebota le kahare la sekontiri.
2. Tsoelo-pele ts'ebelisong ea polypropylene
Polypropylene (Polypropylene) e sebelisitsoe masimong a mangata joalo ka ho paka lihlahisoa, tlhahiso ea lintho tsa letsatsi le letsatsi, tlhahiso ea likoloi, thepa ea moaho, lisebelisoa tsa bongaka, jj ka lebaka la ts'ebetso ea eona ea tlhahiso, e theko e tlaase ebile e fumaneha habonolo, e bolokehile, e lihlahisoa tse chefo le tse bolokang tikoloho. Ka lebaka la phehello ea hajoale ea bophelo bo botala le litlhoko tse ling bakeng sa ts'ireletso ea tikoloho, polypropylene e nkile sebaka sa lisebelisoa tse ngata ka botsoalle bo bobe ba tikoloho.
2.1 Nts'etsopele ea lihlahisoa tsa polypropylene bakeng sa lipeipi
Phala ea copolymer polypropylene e sa reroang, e tsejoang hape e le PPR, ke e 'ngoe ea lihlahisoa tsa polypropylene tse batloang haholo hajoale. E na le litšobotsi tse ntle tsa mochini le khanyetso e matla ea tšusumetso. Phala e lokiselitsoeng ho eona joalo ka thepa e tala e na le matla a phahameng a mochini, boima bo bobebe, le ho hanyetsa. Ts'enyeho manganga le loketseng bakeng sa ho e lokisa ka ho eketsehileng. Hobane e ka mamella mocheso o phahameng le metsi a chesang, e na le bophelo bo bolelele ba ts'ebeletso bo ipapisitse le tlhahlobo ea boleng, boleng bo botle basehlahisoa le botsitso bo phahameng, 'me e sebelisitsoe haholo lipalangoang tse batang le tse chesang tsa metsi.
Ka lebaka la ts'ebetso ea eona e tsitsitseng, polokeho le ts'epahalo, le theko e tlase, e thathamisitsoe e le thepa e khothalelitsoeng e loketseng thepa ke Lekala la Kaho le mafapha a mang a amehang. Butle-butle e lokela ho nkela liphaephe tsa setso liphaephe tse tala tse sireletsang tikoloho joalo ka PPR. Tlas'a bohato ba mmuso, naha ea heso e ntse e hahuoa. Bolulo bo fetang 80% bo sebelisa lipeipi tse tala tsa PPR. Ka nts'etsopele e potlakileng ea indasteri ea naha ea heso, tlhoko ea lipeipi tsa PPR le eona ea eketseha. Ho ea ka lipalo-palo, karolelano ea tlhoko ea selemo e ka bang 200kt.
2.2 Nts'etsopele ea lihlahisoa tsa polypropylene ea filimi
Lihlahisoa tsa lifilimi le tsona ke tse ling tsa lihlahisoa tsa polypropylene tse batloang haholo. Ho etsa lifilimi ke tsela ea bohlokoa bakeng sa lits'ebetso tsa polypropylene. Ho ea ka lipalo-palo, hoo e ka bang 20% ea polypropylene e hlahisoang selemo se seng le se seng e sebelisetsoa ho hlahisa lifilimi. Ha polypropylene filimi e tsitsitse ebile e le tikoloho, e ka sebelisoa mefuteng e fapaneng ea sehlahisoa, joalo ka lisebelisoa tse fapaneng tsa ho sirelletsa lihlahisoa tse nepahetseng, hape e ka sebelisoa masimong a mangata joalo ka thepa ea moaho. Haholo-holo lilemong tsa morao tjena ho thehiloe thepa ea filimi ea polypropylene e nang le boleng bo phahameng. Mohlala, filimi ea `` propylene-ethylene-1-butene ternary copolymer polypropylene '' e ka sebelisoa bakeng sa mocheso o tlaase oa mocheso oa mocheso, o nang le tlhokeho e kholo ea mmaraka.
Ha ho bapisoa le thepa ea moetlo ea filimi ea ho tiisa mocheso, e ka fihlela matla a mochini o betere le ho hanela tšusumetso. Ho na le mefuta e mengata ea lihlahisoa tsa filimi, 'me lifilimi tse emelang tse batloang haholo ke: biaxially oriented BOPP film, cast polypropylene CPP Film, CPP film is most used for food and pharmaceutical product packaging, BOPP film is most used for the product packaging and the tlhahiso ea lihlahisoa tse khomarelang. Ho ea ka data, China hajoale e hloka ho kenya thepa e ka bang 80kt ea thepa ea polypropylene e kang filimi selemo se seng le se seng.
Nts'etsopele ea lihlahisoa tsa polypropylene bakeng sa makoloi
Kamora ho fetoloa, thepa ea polypropylene e na le litšobotsi tse ntlafatsang tsa ts'ebetso, matla a phahameng a mochini, 'me e ka boloka ts'ebetso e ntle kamora litlamorao tse ngata. E lumellana le mohopolo oa nts'etsopele ea polokeho le ts'ireletso ea tikoloho. Ka hona, e sebelisitsoe haholo lebaleng la likoloi.
Hajoale, lihlahisoa tsa polypropylene li sebelisoa likarolong tse fapaneng tsa likoloi joalo ka li-dashboard, thepa ea kahare le li-bumpers. Lihlahisoa tse fetotsoeng tsa polypropylene joale e se e le lihlahisoa tsa mantlha tsa polasetiki bakeng sa likarolo tsa likoloi. Haholo-holo, ho ntse ho na le lekhalo le leholo ho lisebelisoa tse phahameng tsa polypropylene, mme litebello tsa nts'etsopele li na le ts'epo.
Ka ntlafatso e tsoelang pele ea litlhoko tsa China tsa hajoale bakeng sa tlhahiso ea makoloi le tlhokomeliso e eketsehileng ea ts'ireletso ea tikoloho lebaleng la tlhahiso ea likoloi, nts'etsopele ea indasteri ea makoloi e tlameha ho rarolla bothata ba ho pheta-pheta le ho sebelisoa hape ha thepa ea polypropylene bakeng sa likoloi. Mathata a mantlha a lihlahisoa tsa polypropylene tse sebelisoang indastering ea likoloi Ka lebaka la khaello ea phepelo ea lihlahisoa tse phahameng tsa polypropylene, ho hlokahala hore lihlahisoa tsa polypropylene li lokela ho ba tse tala, tse hlokang tikoloho, tse se nang tšilafalo, tse nang le mocheso o phahameng oa mocheso, matla a phahameng a mochini matla ho feta ts'enyeho ts'enyeho.
Ka 2020, China e tla kenya tšebetsong maemo a "National VI", mme nts'etsopele ea likoloi tse bobebe e tla kenngwa tšebetsong. Lihlahisoa tsa polypropylene li theko e tlase ebile li bobebe. Li tla ba le menyetla e mengata hape li tla sebelisoa haholo indastering ea likoloi.
Nts'etsopele ea lihlahisoa tsa polypropylene ea bongaka
Lisebelisoa tsa polypropylene tsa maiketsetso li bolokehile ebile ha li na chefo, ebile li na le litšenyehelo tse tlase tsa tlhahiso, 'me li sebelisa tikoloho haholo. Ka hona, e sebelisoa haholo ha ho hlophisoa lihlahisoa tse fapaneng tse lahloang tsa bongaka tse kang ho paka lithethefatsi, lisirinji, libotlolo tsa infusion, litlelafo le methapo e bonaletsang ea lisebelisoa tsa bongaka. Phetoho ea lisebelisoa tsa khalase ea setso e fihletsoe.
Ka litlhoko tse ntseng li eketseha tsa sechaba ka kakaretso bakeng sa maemo a bongaka le tsetelo e ntseng e eketseha ea China ho lipatlisiso tsa mahlale bakeng sa lisebelisoa tsa bongaka, ts'ebeliso ea lihlahisoa tsa polypropylene 'marakeng oa bongaka e tla eketseha haholo. Ntle le tlhahiso ea lihlahisoa tse joalo tse tlase tsa bongaka, e ka sebelisoa ho hlophisa lisebelisoa tsa bongaka tse maemong a holimo joalo ka masela a bongaka a sa lohiloeng le likhechana tsa liphio tsa maiketsetso.
3. Kakaretso
Polypropylene ke sesebelisoa sa polima se sebelisoang haholo se nang le theknoloji ea tlhahiso e holileng, e theko e tlaase ebile e fumaneha habonolo lihlahisoa tse tala, lihlahisoa tse bolokehileng, tse se nang chefo le tikoloho. E sebelisitsoe ho paka lihlahisoa, tlhahiso ea litlhoko tsa letsatsi le letsatsi, tlhahiso ea likoloi, thepa ea kaho, lisebelisoa tsa bongaka le likarolo tse ling. .
Hajoale, lisebelisoa tse ngata tsa tlhahiso ea polypropylene, lits'ebetso tsa tlhahiso le lintho tse thusang China li ntse li sebelisa theknoloji ea kantle ho naha. Patlisiso mabapi le lisebelisoa tsa tlhahiso ea polypropylene le lits'ebetso li lokela ho potlakisoa, 'me motheong oa ho monya boiphihlelo bo botle, ts'ebetso ea tlhahiso ea polypropylene e lokela ho etsoa. Ka nako e ts'oanang, ho a hlokahala ho eketsa matsete lipatlisisong tsa mahlale, ho nts'etsapele lihlahisoa tsa polypropylene tse nang le ts'ebetso e ntle le boleng bo holimo, le ho ntlafatsa tlholisano ea mantlha ea China.
E khannoa ke maano a ts'ireletso ea tikoloho, ts'ebeliso ea lipolasetiki tse senyehang ka har'a thepa ea tafoleng, ho paka, temo, likoloi, kalafo ea bongaka, masela le likarolo tse ling ho tlisa menyetla e mecha ea nts'etsopele ea mmaraka.
