I-High-temperature polystrackic acid (PLA) ingenye yamapulasitiki aboleka kakhulu awonakaliswa kakhulu ucwaningo nokusetshenziswa.Impahla yayo eluhlaza ivela emiculweni yezitshalo evuselelekayo, ummbila, imikhiqizo yezolimo, njll., enokonakala okuhle kwe-biodegradability.I-PLA inezakhiwo ezinhle kakhulu zemishini futhi ifana nepulasitiki ye-polypropylene.Ingakwazi esikhundleni se-PP ne-PET plastic kwezinye izinkambu.Ngesikhathi esifanayo, ine-gloss enhle, obala, ukuzwa, kanye ne-bacteriostatic ethile.
1. Isimo sokukhiqiza se-high-temperature polystraphin PLA
Njengamanje, kunezinhlobo ezimbili zezindlela zokuhlanganisa ze-PLA.Enye indlela yokuhlanganisa eqondile.I-lactic acid isizokhipha amanzi futhi inciphe lapho izinga lokushisa eliphezulu kanye nomfutho ophansi.Inqubo yokukhiqiza ilula futhi izindleko ziphansi, kodwa ikhwalithi yamangqamuzana omkhiqizo ayilingani futhi umphumela wangempela wokufaka isicelo awulungile.Okunye ukuthi i-propylecly polymerization yaseCyrne isemthethweni, okuyindlela yamanje yokukhiqiza evamile.Inqubo ethize imi kanje.
I-PLA isemthethweni, isebenza kahle kakhulu ekukhiqizeni, ikhwalithi yomkhiqizo omuhle, nezindleko eziphakeme.
2. Ukonakala kwe-high-temperature polystraphin PLA
I-PLA izinzile ekamelweni lokushisa, kodwa kulula ukwehlisa ngokushesha i-CO2 namanzi endaweni yokushisa ephakeme kancane, i-asidi enkomishini yendandatho yenkonzo, kanye nemvelo ye-microbial.Ngakho-ke, imikhiqizo ye-PLA ingasetshenziswa ukusebenzisa imvelo kanye nezigcwalisi ukuze zisetshenziswe ngokuphepha ngesikhathi sokuqinisekisa, futhi zingehliswa ngesikhathi ngemuva kokulahlwa.
Izici ezithinta ukucekelwa phansi kwe-PLA zifaka ikhwalithi yamangqamuzana, isimo sekristalu, isakhiwo esincane, izinga lokushisa lemvelo kanye nomswakama, inani le-pH, isikhathi sokukhanya kanye ne-microorganism yemvelo.
I-PLA nezinye izinto zixubene nezinye izinto ezingathinta isivinini sokuwohloka.Isibonelo, i-PLA yengeza inani elithile lempushana yokhuni noma utshani bommbila kanye nefayibha ukuze kusheshiswe izinga lokuwohloka.
3. ukumelana nokushisa okuphezulu kwe-polystrackic acid PLA
Ukuvinjelwa kusho ikhono lokuvimbela igesi nesimusi samanzi ngokusebenzisa impahla.Ukuhlukaniswa kwezinto zokuvimbela kubaluleke kakhulu ezintweni zokupakisha.Njengamanje, isikhwama sepulasitiki sokusika esivame kakhulu emakethe yi-Plapbat eyinhlanganisela yezinto.Ukumelana kwefilimu ye-PLA kungakhulisa inkambu yesicelo.
Izici ezithinta ukuvinjelwa kwe-PLA ikakhulukazi zihlanganisa izici zabo siqu (isakhiwo samangqamuzana nesimo se-crystalline) nezici zangaphandle (izinga lokushisa, umswakama, amandla angaphandle).
1. Ukushisa ifilimu ye-PLA kuzonciphisa ukuvinjelwa kwayo, ngakho-ke i-PLA ayifanele ukupakishwa kokudla njengokudla okudinga ukushiswa.
2 PLA ukwelula phakathi kobubanzi obuthile kungakhuphula ukumelana.Lapho isilinganiso se-tensile sikhuphuka sisuka ku-1 siye ku-6.5, i-crystallization ye-PLA iba ngcono kakhulu, ngakho-ke ukuvinjelwa kuyathuthukiswa.
3. Ukwengeza ukuvinjwa okuthile (njengobumba nefayibha) ku-PLA substrate kungathuthukisa ukuvinjelwa kwe-PLA.Lokhu kungenxa yokuthi ukuvimbela indlela egobayo yokungena kwamanzi noma igesi yama-molecule amancane.
4. Ukwelashwa kwe-Pailoring ebusweni befilimu ye-PLA kungathuthukisa ukumelana.
4. Ukusebenza kwemishini kwe-PLA
I-PLA inamandla amahle.Izakhiwo zemishini zifana ne-PP, kodwa ukungabi namandla kulula ukugoba nokuwohloka, futhi ngokuvamile kudinga ukuqina nokuguqulwa.Ukuze kuqinisekiswe ukubola kwe-PLA, i-PLA nokunye ukusebenza kwepulasitiki kuvame ukuxutshwa ne-biodegradable resin.I-PBAT, i-PBS, i-PCL, irabha yemvelo nezinye izinto zingathuthukisa ukuqina kwe-PLA.
5. Ukusebenza kokubona kwe-PLA
I-PLA inokungafihli okungajwayelekile kanye nokucwebezela kwenye ipulasitiki eyonakalayo, okulingana nephepha lengilazi ne-PET, elungele ukusetshenziswa ikakhulukazi (ukupakishwa okubonakalayo, umphumela omuhle wokuhlobisa. Ngokuvamile, ukukhanya nokukhanya kwe-PLA akudingi ukuthuthukiswa. Kufanele kuthuthukiswe. qaphela ukuthi enye kwenye ikwenye.Unganciphisi ukubonakala kwayo okuhle ngangokunokwenzeka ukuze uqinisekise ukupakishwa kwayo okubonakalayo kanye nomthelela wokuhlobisa.
Ibhokisi lokupakisha elisobala le-PLA
6. Ukusebenza okushisayo kwe-PLA
Ukuzinza okushisayo kwezinto ze-PLA kulingana ne-PVC, kodwa kuphansi kune-PP, PE ne-PS.Izinga lokushisa lokucubungula ngokuvamile lilawulwa phakathi kuka-170 ~ 230 ° C. Ilungele umjovo, ukwelula, ukukhishwa, ukuphefumula, ukushaya kwe-3D, njll.
I-PLA tableware
Ekucutshungulweni kwangempela, izinga le-PLA crystallization lihamba kancane futhi ngokuvamile lidinga ukuguqulwa.Ngenxa yezinga le-crystallization ehamba kancane futhi ephansi, izinga lokushisa lokushintsha ukushisa kwe-PLA liphansi, elikhawulela ukusetshenziswa kwalo ekufakweni kwemikhiqizo egcwele ukushisa noma yokuvala inzalo eshisayo.
Ukuze kuthuthukiswe izinga lekristalu le-PIA kanye nobucwebe, ukuhlanzeka kokubona kwe-PLA kungathuthukiswa ngangokunokwenzeka ngesikhathi sokukhiqiza.Ukwelashwa kwe-antuction nakho kuyindlela yokuthuthukisa i-PA crystallinity.Ngaphezu kwalokho, ingangezwa nama-agent enyukliya ukuze kuthuthukiswe ukuziphatha kwe-crystallization, ithuthukise i-crystallinity yayo, ngaleyo ndlela ithuthukise izinga lokushisa lokuguqulwa kokushisa, futhi ithuthukise ukumelana kwayo nokushisa.
Izinga lokushisa eliphezulu le-PLA yokuphrinta ye-3D
7. Ukusebenza kwe-antibacterial kwe-PLA
I-PLA ingakha indawo ene-asidi ebuthakathaka ebusweni bomkhiqizo, enemiphumela ye-bacteriostatic kanye nesikhunta.Uma i-ejenti esizayo ye-antibacterial isetshenziselwa ukufinyelela ngaphezu kwe-90% yezinga le-antibacterial, ingasetshenziselwa ukupakishwa kwe-antibacterial yomkhiqizo.
I-PLA yenhliziyo nemithambo yegazi, i-PLA elwa namagciwane ivame ukusetshenziswa emkhakheni wezokwelapha
Ama-antibacterial agents asetshenziswa kakhulu yisiliva, ithusi, i-zinc nezinye izinsimbi.Amabhaktheriya e-organic Hango avame ukusetshenziswa ahlanganisa i-vanadal noma i-ethyl vanadal formation compounds.Ukuphepha kokudla kwamanye ama-antibacterial agents kumele kufundwe.Ngokujwayelekile i-organic I-ejenti elwa namagciwane impofu futhi isikhathi sokuqinisekisa sifushane.
8. Ukusebenza kukagesi kwe-PLA
I-PLA ingalungisa izinhlayiya eziqhubayo ezifana ne-carbon black (CB), carbon nanotubes (CNTS), carbon fibre (CFS), noma iringi yetshe.Izinto ezihlanganisiwe ze-polymer ezisetshenziswayo zisetshenziswa kabanzi kupulasitiki elwa ne-static, izinto zokuvikela ugesi, ukuzilawula kokushisa kokushisa -izinto ezishisayo, izinto ezisezingeni elifanele lokushisa, kanye namadivayisi azwelayo emvelo.
I-CPCS, esekelwe ku-PLA, iphinde ibe nokuwohloka nokuvumelana kwezinto eziphilayo.Ingasetshenziselwa ukupakisha okukhethekile kwe-anti-static, i-electromagnetic shielding packaging, kanye nokupakishwa okuhlakaniphile.Isibonelo, i-PLA base conductive polymer ingasetshenziselwa izinzwa zegesi noma eziwuketshezi ukuthola ulwazi lwekhwalithi yokudla.
Isikhathi sokuthumela: Oct-08-2022