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Polypropylene (PP) ke resin ea thermoplastic e nang le botenya bo bonyenyane ka ho fetisisa. E ka aroloa ka homopolypropylene (PP-H) le polypropylene e kopantsoeng le copolymer. Polypropylene e kopantsoeng le copolymer e aroloa hape ka polypropylene e kopantsoeng le block (e hanelang tšusumetso) copolymerized (PP-H). B) le polypropylene e kopantsoeng le copolymerized (PP-R) e sa reroang (e sa reroang). Ho na le mefuta e mengata ea thepa ea PP, joale liphapang tsa tsona ke life? Kajeno re tla ithuta ka li-PP tse fapaneng le uena.
PP-H
E entsoe ka polymer ho tsoa ho monomer e le 'ngoe ea propylene, ke eona e nang le bongata bo bonyenyane ka ho fetisisa har'a polasetiki e tloaelehileng. Ketane ea eona ea limolek'hule e tloaelehile haholo, kahoo thepa e na le kristale e phahameng le thepa e fokolang ea tšusumetso.
Melemo: matla a betere le ho hanyetsa mafome hamolemo.
Mathata: ho hanyetsa ho fokolang ha tšusumetso (ho tetebela), ho thatafala ho fokolang, botsitso bo fokolang ba litekanyo, ho tsofala habonolo, ho hanyetsa mocheso le botsitso ba nako e telele, le litšobotsi tse fokolang tsa thibelo ho oksijene, carbon dioxide le likhase tse ling.
Tšebeliso: E ka sebelisoa bakeng sa ho paka litheipi, libotlolo tse butsoetsoeng, borashe, liropo, mekotla e lohiloeng, lintho tsa ho bapala, lifoldara, lisebelisoa tsa motlakase, lihlahisoa tsa ntlo, mabokose a lijo tsa motšehare a microwave, mabokose a polokelo, le lifilimi tsa pampiri tse phuthelang.
Mokhoa oa ho khetholla: Ha e chesoa ke mollo, terata e tla ba bataletse 'me e se telele.
PP-B
E fumanoa ka ho kopanya propylene le karolo ea ethylene. Ka kakaretso, tekanyo ea ethylene ke 7 ho isa ho 15%. Leha ho le joalo, hobane monyetla oa hore li-monomer tse peli tsa ethylene le li-monomer tse tharo li hokahane hammoho ho PP-B o phahame haholo, ho bolela hore ethylene monomer e kentsoe feela Karolong ea karolo, ho ba teng ha PP-H ha hoa fokotseha, kahoo morero oa ho ntlafatsa ntlha ea ho qhibiliha, khanyetso ea khatello ea hydrostatic ea nako e telele, khanyetso ea mocheso ea nako e telele le ts'ebetso ea liphaephe le thepa ea ho theha ea PP-H e ke ke ea finyelloa.
Melemo: ho hanyetsa ho ba le tšusumetso e ntle.
Mathata: ponaletso e tlase, ho benya ho tlase, ho hanyetsa mongobo hampe, ho hanyetsa asiti le mafome a alkali, ho hanyetsa ho qhibiliha ha metsi le ho hanyetsa oxidation mochesong o phahameng.
Tšebeliso: E sebelisoa libampereng, lihlahisoa tse nang le mabota a masesaane, li-stroller, lisebelisoa tsa lipapali, mekotla, libakete tsa pente, mabokose a betri, le lihlahisoa tse nang le mabota a masesaane.
Mokhoa oa ho khetholla: Ha e fetohe e ntšo ka mor'a ho hotetsoa 'me e ka ntša terata e telele haholo e chitja.
PP-R
E fumanoa ka ho kopanya propylene monomer le monomer e nyane ea ethylene (1-4%) tlas'a ts'ebetso ea mocheso, khatello le catalyst. Ethylene monomer e ajoa ka mokhoa o sa reroang le ka mokhoa o sa reroang ka har'a ketane e telele ea propylene. Ho eketsoa ha ethylene ka mokhoa o sa reroang ho fokotsa kristale le ntlha ea ho qhibiliha ha polymer, ho ntlafatsa tšusumetso ea thepa, ho hanyetsa khatello ea hydrostatic nako e telele, ho hanyetsa oksijene ea mocheso nako e telele le ts'ebetso ea liphaephe le ho li bopa.
Sebopeho sa ketane ea limolek'hule ea PP-R, litaba tsa ethylene monomer le matšoao a mang li na le tšusumetso e tobileng botsitsong ba mocheso ba nako e telele, litšobotsi tsa mechini le ts'ebetso ea ts'ebetso ea thepa. Ha kabo ea ethylene monomer ka har'a ketane ea limolek'hule ea propylene e sa reroang, phetoho ea litšobotsi tsa polypropylene e tla ba ea bohlokoa haholo.
Melemo: tshebetso e ntle ka kakaretso, matla a phahameng, ho tiea ho hoholo, ho hanyetsa mocheso hantle, botsitso bo botle ba tekanyo, ho tiea ho hoholo ha mocheso o tlase (ho tenyetseha ho hoholo), ponaletso e ntle, le khanya e ntle.
Mathata: Tshebetso e ntle ka ho fetisisa hara PP.
Tšebeliso: E sebelisoa liphaepheng, lifiliming tse nyenyefatsang, libotlolong tsa marotholi, lijaneng tse bonaletsang haholo, lihlahisoa tsa lapeng tse bonaletsang, lisirinji tse lahloang, le lifiliming tsa pampiri ea ho paka.
Mokhoa oa ho khetholla: Ha e fetohe e ntšo ka mor'a ho hotetsoa 'me e ka ntša terata e telele haholo e chitja.
Papiso ea mefuta e meraro ea polypropylene
Matla a ho tenyetseha: homopolypropylene>block copolymerized propylene>random copolymerized propylene
Ho tiea: Homopolypropylene > Block copolymerized propylene > Random copolymerized propylene
Matla a tšusumetso: propylene e kopolotsoeng ka block > propylene e kopolotsoeng ka random > propylene e kopolotsoeng ka homopolymer
Ho pepeneneng: Propylene e sa reroang e nang le copolymerized> Propylene e nang le homopolymerized> Propylene e nang le block e nang le copolymerized
Ho tiea ha mocheso o tlase: propylene e kopolotsoeng ka block > propylene e kopolotsoeng ka random > propylene e kopolotsoeng ka homopolymer
Tafole ea likateng
Ka dilemo tse ka bang 20 indastering ya disebediswa tsa extrusion tse bohlale, o bile le mesebetsi ya bohlokwa ho Jwell Machinery, ho kenyeletswa le Motsamaisi Kakaretso le Modulasetulo ya Potolohang. Ho tloha ka 2024, o laotse makala a mangata a ka tlase, a kganna katoloso ya kgwebo le ntlafatso ya diindasteri, ha a ntse a etella pele boqapi tlhahisong e bohlale le kgolo ya lefatshe.
