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Isixazululo Sokupakisha Okonga Amandla—Ukomisa, I-Crystallizing PLA

I-Virgin PLA resin, icwebezeliswa futhi yomiswa izinga lomswakamo elingu-400-ppm ngaphambi kokushiya isitshalo sokukhiqiza.I-PLA icosha umswakama osendaweni ngokushesha okukhulu, ingakwazi ukumunca umswakama ongaba ngu-2000 ppm endaweni evulekile futhi izinkinga eziningi ezitholwa ku-PLA zibangelwa ukomiswa okunganele.I-PLA idingeka ukuthi yomiswe kahle ngaphambi kokucubungula.Ngenxa yokuthi iyi-polymer yokujiya, ukuba khona ngisho nenani elincane kakhulu lomswakama ngesikhathi sokuncibilika kubangela ukuwohloka kwamaketanga e-polymer nokulahlekelwa isisindo samangqamuzana kanye nezakhiwo zemishini.I-PLA idinga amadigri ahlukene okomisa kuye ngebanga nokuthi izosetshenziswa kanjani.Ngaphansi kuka-200 PPM kungcono ngoba i-viscosity izozinza futhi iqinisekise ikhwalithi yomkhiqizo.

Njenge-PET, i-PLA emsulwa ilethwa i-pre-crystallized.Uma ingacwazisiswanga, i-PLA izonamathela futhi inqwabelene lapho izinga lokushisa lifinyelela ku-60℃.Leli izinga lokushisa lengilazi le-PLA (Tg);iphuzu lapho i-amorphous material iqala ukuthamba.(I-Amorphous PET izohlangana ku-80℃) I-Regrind material etholwe ekukhiqizweni kwangaphakathi njenge-extruder edge trim noma i-thermoformed skeleton scrap kumele yenziwe ikristalu ngaphambi kokuthi iphinde icutshungulwe.Uma i-PLA ecwebezelayo ingena enqubweni yokomisa futhi ichayeke ekushiseni ngaphezu kuka-140 F, izohlangana futhi ibangele ukuvinjwa okuyinhlekelele kuwo wonke umkhumbi.Ngakho-ke, i-crystallizer isetshenziselwa ukuvumela i-PLA ukuthi idlule ku-Tg kuyilapho ingaphansi kokuyaluza.

Bese i-PLA idinga I-Dryer ne-crystallizer

1. Isistimu yokomisa evamile --- isomisi esisusa umswakama (desiccant).

Amamaki e-Amorphous asetshenziselwa izendlalelo zophawu lokushisa kwifilimu ayomiswa ku-60 ℃ amahora angu-4.Amamaki acwebezelayo asetshenziselwa ukukhipha ishidi nefilimu ayomiswa ku-80 ℃ amahora angu-4.Izinqubo ezinezikhathi zokuhlala ezinde noma amazinga okushisa aphezulu njengefayibha spinning zidinga ukomiswa okwengeziwe, kube ngaphansi kuka-50 PPM womswakama.

Ngaphezu kwalokho, isomisi se-infrared crystal --- I-IR Dryer ikhonjiswe ukuthi icwebeze ngempumelelo i-Ingeo biopolymer ngesikhathi somiswa.usebenzisa i-infrared drying (IR).Ngenxa yezinga eliphezulu lokudluliswa kwamandla ngokushisisa kwe-IR kuhlanganiswe nobude obuthile begagasi obusetshenzisiwe, izindleko zamandla zingancishiswa kakhulu, kanye nosayizi.Ukuhlolwa kokuqala kubonise ukuthi i-virgin Ingeo biopolymer ingomiswa futhi i-amorphous flake icwebezeliswe futhi yomiswe kungakapheli imizuzu eyi-15 kuphela.

I-infrared crystal dryer--- Idizayini ye-ODE

1. Ngokucutshungulwa Kokomisa kanye nokucwebezela ngesikhathi

2. Isikhathi sokumisa siyi-15-20mins (Isikhathi sokumisa singashintshwa njengemfuneko yamakhasimende ezintweni ezomisa)

3. Izinga lokushisa lokumisa lingalungiseka (Ibanga ukusuka ku-0-500℃)

4. Umswakama wokugcina: 30-50ppm

5. Izindleko zamandla zonga cishe u-45-50% uma ziqhathaniswa ne-Desiccant dryer &crystallizer

6. Ukonga isikhala: kufika ku-300%

7. Lonke uhlelo lulawulwa i-Siemens PLC, kulula ukuyisebenzisa

8. Ngokushesha ukuqalisa

9. Ukushintsha okusheshayo nesikhathi sokuvala

Izicelo ezijwayelekile ze-PLA (i-polylactic acid) ziyi

I-fiber extrusion: izikhwama zetiye, izingubo.

Ukubumba umjovo: amakesi ayigugu.

Izinhlanganisela: ngokhuni, PMMA.

I-Thermoforming: ama-clamshell, amathreyi amakhukhi, izinkomishi, ama-pods ekhofi.

Ukubunjwa kwe-Blow: amabhodlela amanzi (angenayo i-carbonated), amajusi amasha, amabhodlela ezimonyo.


Isikhathi sokuthumela: Feb-24-2022
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