Nkauj xwb Pla Resin, yog Crystallized thiab qhuav rau 400-ppm noo noo theem ua ntej tawm ntawm cov khoom cog ntau lawm. Pla xaiv cov dej noo noo heev heev, nws tuaj yeem nqus ib ncig ntawm 2000 ppm noo ntawm chav qhib thiab feem ntau ntawm cov teeb meem tau ntsib ntawm kev ziab qhuav tsis txaus. PLA yuav tsum tau ua kom qhuav ua ntej ua. Vim tias nws yog cov hws polymer, muaj ib qho ntawm cov dej noo me me thaum lub sijhawm yaj ua kom tsis txhob poob siab thiab poob ntawm cov roj ntsha hnyav thiab cov khoom siv tshuab. PAS xav tau cov qib sib txawv ntawm kev ziab nyob ntawm qib thiab yuav siv li cas. Nyob rau hauv 200 ppm yog qhov zoo dua vim viscosity yuav ruaj khov thiab ua kom cov khoom lag luam zoo.
Zoo li tsiaj, nkauj xwb pla yog xa ua ntej crystallized. Yog tias tsis crystallized, pla yuav ua lo nplaum thiab clump thaum nws qhov kub ncav cuag 60 ℃. Qhov no yog Pla lub iav-hloov kub (tg); Lub ntsiab lus uas cov amorphous cov khoom pib muag. (Amorphous Tsiaj yuav agglomerate ntawm 80 ℃) Cov khoom tau zoo los ntawm cov khoom lag luam uas cuam tshuam los ntawm cov pob txha tsis zoo li xws li extruder pob txha pob txha yuav tsum yog ua kom muaj tseeb ua ntej nws tuaj yeem rov ua haujlwm. Yog hais tias crystallized pla nkag mus rau cov txheej txheem ziab thiab raug rau cua sov saum 140 f, nws yuav aggromerate thiab ua rau kev puas tsuaj thoob plaws lub nkoj. Yog li ntawd, ib lub crystallizer yog siv los tso cai rau cov pla los hloov pauv ntawm qhov tsis muaj kev ntxhov siab.
Tom qab ntawd Pla xav tau lub tshuab ziab khaub ncaws thiab crystallizer
1. Cov txheej txheem ziab khaub ncaws --- ib qho dehumidifying (desiccant) tshuab ziab khaub ncaws
Amorphoous cov qib siv tau siv rau cov khoom siv cua sov hauv zaj duab xis yog qhuav ntawm 60 ℃ rau 4 teev. Crystallized cov qib tau siv los khaws cov ntawv sau thiab zaj duab xis yog qhuav ntawm 80 ℃ rau 4 teev. Cov txheej txheem nrog cov sijhawm nyob ntev ntev li cov sijhawm kub siab dua xws li kev siv roj fiber ntau zoo li kev ziab ntau ntxiv, kom tsawg dua 50 ppm ntawm noo noo.
Tsis tas li ntawd, infrared crystal tshuab ziab khaub ncaws --- Siv kev ziab infrared (iR). Vim tias tus nqi siab ntawm kev hloov tsheb nrog IR cov cua sov ua ke nrog cov nqi yoj tshwj xeeb ntev, lub zog cov nqi yuav tau txo qis heev, nrog rau qhov loj me.Kev kuaj mob thawj zaug tau qhia tias nkauj xwb miopolymer tuaj yeem qhuav thiab amorphod flake crystallized thiab qhuav nyob rau hauv tsuas yog li 15 feeb
Lub tshuab ziab khaub ncaws Crystal inferer (Dde Disc
1. Nrog kev ua kom qhuav thiab crystallizing nyob rau ib lub sijhawm
2. Lub sijhawm qhuav yog 15-20me (lub sijhawm kom qhuav kuj tuaj yeem kho tau raws li cov neeg siv khoom lag luam ntawm cov khoom kom ziab)
3. Kom qhuav yuav kho tau (ntau ntawm 0-500 ℃)
4. Thaum kawg noo: 30-50ppm
5. Lub zog nqi txuag li 45-50% piv nrog DesicCant Tshuab Ziab Khaub Ncaws & Crystallizer
6.Xev Txuag: Txog 300%
7. Txhua qhov system yog tswj siemens plc, yooj yim dua rau kev ua haujlwm
8. Sai rov qab pib
9. Hloov nrawm-dhau thiab kaw lub sijhawm
Raug Pla (polylactic acid)) yog
Fiber ntau Extrusion: Tshuaj Yej Hnab, Khaub Ncaws.
Txhaj Tshuaj Molding: Cov Me Nyuam Cov Khaub Ncaws.
Tebchaw: nrog ntoo, PMMA.
Thermoforming: Clamshells, Ncuav qab zib tais, khob, kas fes pods.
Tshuab Moulding: Cov hwj (tsis muaj dej haus), cov kua txiv tshiab, tshuaj pleev kom zoo nkauj.
Lub Sijhawm Post: Feb-24-2022