I-PLA ne-PBAT

Nakuba kokubili kuyizinto ezibolayo, imithombo yazo ihlukile. I-PLA itholakala ezintweni eziphilayo, kuyilapho i-PKAT itholakala ezintweni ezisetshenziswa yi-petrochemical.

I-PLA's monomer material i-lactic acid, evame ukugaywa izitshalo zamakhoba ezifana nommbila ukuze kukhishwe isitashi, bese iguqulwa ibe ushukela ongahluziwe.

I-glucose ibe isivutshelwa ngendlela efanayo nobhiya noma utshwala, futhi ekugcineni i-lactic acid monomer iyahlanzwa. I-lactic acid iphinde ifakwe i-lactide ibe yi-poly (lactic acid).

I-BAT polyterephthalic acid - i-butanediol adipate, ingeyepulasitiki ye-petrochemical biodegradable, evela embonini ye-petrochemical, i-monomer eyinhloko i-terephthalic acid, i-butanediol, i-adipic acid.

Uma i-PLA iyinkosana encane futhi enamandla, kusho ukuthi i-PBAT iyinethiwekhi yabesifazane ethambile ebomvu. I-PLA ine-modulus ephezulu, amandla aqinile aphezulu kanye ne-ductility ephansi, kuyilapho i-PKAT inezinga eliphezulu lokukhula kokuphuka kanye ne-ductility enhle.

I-PLA ifana ne-PP kumapulasitiki ajwayelekile, ukubunjwa komjovo, ukukhishwa, ukubunjwa kokushaywa, i-blister ingenza konke, i-PBAT ifana ne-LDPE, ukupakishwa kwesikhwama sefilimu kuhle.

I-PLA iqinile ngokukhanyayo okukhanyayo okukhanyayo, ukuzinza okuhle kokushisa, izinga lokushisa lokucubungula i-170 ~ 230 ℃, inokumelana okuhle kwe-solvent, ingacutshungulwa ngezindlela ezihlukahlukene, njenge-extrusion, ukuphotha, ukunwebeka kwe-biaxial, ukubunjwa kokushaywa komjovo.

Ngokufanayo ne-PP, ukubonakala obala kufana ne-PS, i-PLA ehlanzekile ayikwazi ukusetshenziselwa ukulungiselela imikhiqizo ngokuqondile, i-PLA inamandla aphezulu kanye ne-modulus yokucindezela, kodwa ukuqina kwayo okunzima nokubi, ukuntuleka kokuguquguquka nokunwebeka, ukuguquguquka okulula ukugoba, umthelela nokudabula. ukumelana kubi.

I-PLA ivamise ukusetshenziselwa ukwenza imikhiqizo eyonakala ngemva kokuguqulwa, njengezitsha zokudla nezitshani ezilahlwayo.

I-PBAT iyi-semi-crystalline polymer, imvamisa izinga lokushisa lokukhanya licishe libe ngu-110 ℃, futhi indawo encibilikayo icishe ibe ngu-130 ℃, futhi ukuminyana kuphakathi kuka-1.18g/ mL no-1.3g/mL. I-crystallinity ye-PBAT icishe ibe ngu-30%, futhi ubulukhuni be-Shore bungaphezu kuka-85. Ukusebenza kokucubungula kwe-PBAT kufana ne-LDPE, futhi inqubo efanayo ingasetshenziswa ekuphepheni kwefilimu. Izakhiwo zemishini zazo zombili izici ze-PBA ne-PBT, i-ductility enhle, ubude ngesikhathi sekhefu, ukumelana nokushisa kanye nokumelana nomthelela. Ngakho-ke, imikhiqizo yokunciphisa izophinde iguqulwe, ikakhulukazi ukuze ihlangabezane nezidingo zokusebenza kwemikhiqizo, kodwa futhi nokunciphisa izindleko.

Nakuba i-PLA ne-PBAT zinokusebenza okuhlukile, zingaphelelisana! I-PLA yengeza ukuqina kwefilimu ye-PBAT, i-PBAT ingathuthukisa ukuguquguquka kwe-PLA, futhi iqedele ngokuhlanganyela imbangela yokuvikelwa kwemvelo.

Njengamanje, iningi lezicelo ezisuselwa ezintweni ze-PBAT emakethe ziyimikhiqizo yesikhwama se-membrane. Izinto eziguquliwe ze-PBAT zisetshenziselwa kakhulu ukufutha ifilimu ukwenza izikhwama, njengezikhwama zokuthenga.

Izinto ze-PLA zisetshenziselwa ikakhulukazi ukubumba umjovo, futhi izinto eziguquliwe ze-PLA zisetshenziselwa kakhulu izitsha zokudla ezilahlwayo, njengamabhokisi okudla awonakele, utshani obuwohlokayo, njll.

Isikhathi eside, umthamo we-PLA ungaphansi kancane kunalowo we-PBAT. Ngenxa yebhodlela elikhulu lobuchwepheshe bokukhiqiza be-PLA kanye nokuntuleka kwempumelelo ekuqhubekeleni phambili kwe-lactide, amandla e-PLA e-China awazange anyuke kakhulu, futhi intengo yezinto zokusetshenziswa ze-PLA ibiza kakhulu. Ingqikithi yamabhizinisi angu-16 e-PLA asefakiwe ekukhiqizweni, asakhiwa noma ahlelelwe ukwakhiwa ekhaya naphesheya. Amandla okukhiqiza afakwe ekukhiqizeni amathani angu-400,000 ngonyaka, ikakhulukazi emazweni angaphandle; Amandla okwakha angamathani angama-490,000/ngonyaka, ikakhulukazi asekhaya.

Ngokuphambene, e-China, izinto zokusetshenziswa zokukhiqizwa kwe-PBAT kulula ukuzithola, futhi ubuchwepheshe bokukhiqiza buyavuthwa. Amandla e-PBAT kanye nomthamo osakhiwayo kukhulu uma kuqhathaniswa. Nokho, umehluko wesikhathi sokukhipha amandla se-PBAT singanwetshwa ngenxa yokuguquguquka kwentengo yezinto ezingavuthiwe ze-BDO, futhi intengo yamanje ye-PBAT isashibhile kune-PLA.

Njengoba kuboniswe kuleli thebula elilandelayo, i-PBAT yamanje esakhiwa + ukwakhiwa okuhleliwe ibalwa ngokusekelwe kumthamo wokukhiqiza wesigaba sokuqala, kanye namandla okukhiqiza okuqala, kungase kube namathani ayizigidi ezingu-2.141 omthamo wokukhiqiza ngo-2021. Uma kucatshangelwa isigaba sokuqala sangempela ukukhiqiza akukwazi ukusetshenziswa ngempumelelo, umthamo wokukhiqiza ungamathani ayizigidi eziyi-1.5.

Inani langempela le-PLA liphakeme kune-PBAT, kodwa ngenxa yokuthi imikhiqizo yesikhwama se-membrane iqala ukuthinteka yinqubomgomo, okuholela ekutholakaleni kwe-PBAT, ngesikhathi esifanayo, intengo ye-PBAT monomer BDO yenyuka kakhulu, inethiwekhi yobuhle yamanje ibomvu i-PBAT. bekushesha ukuthola inani le-PLA.

Nakuba i-PLA iseyinkosana encane ethule, intengo izinzile, ngaphezu kuka-30,000 yuan/ton.

Okungenhla ukuqhathanisa okujwayelekile kwezinto ezimbili. Lapho uxhumana nabangaphakathi embonini mayelana nokuthi yiluphi uhlobo lwezinto ezizothandwa kakhulu esikhathini esizayo, wonke umuntu unemibono ehlukene. Abanye abantu bacabanga ukuthi i-PLA izoba yinkomba esikhathini esizayo.

Abanye abantu bacabanga ukuthi i-PBAT izoba yiyona ehamba phambili, ngoba uma kucatshangelwa ukuthi i-PLA ngokuyinhloko isuka kummbila, ingabe inkinga yokutholakala kommbila ingaxazululeka? Nakuba i-PBAT isekelwe ku-petrochemical, inezinzuzo ezithile emthonjeni wezinto ezingavuthiwe kanye nentengo.

Eqinisweni, bangumndeni, akukho ngxabano evamile, isicelo esivumelana nezimo kuphela, funda komunye nomunye ukuze udlale amandla amakhulu!