Pla (polylactic acid) yog nrov bio-based thermoplastic paub rau nws biodegradability thiab ntev. Txawm li cas los xij, kom ua tiav cov khoom lag luam zoo thiab cov kws kho tshuab, PLA filament feem ntau yuav tsum muaj cov txheej txheem kev kho mob tshwj xeeb: Crystallization. Cov txheej txheem no feem ntau tau nqa tawm siv ib lub pla crystallizer tshuab ziab khaub ncaws. Cia relve rau hauv cov kauj ruam kauj ruam-ib kauj ruam ntawm kev siv lub pla crystallizer tshuab ziab khaub ncaws.
Nkag siab txog kev xav tau ntawm Crystallization
Pla muaj nyob rau hauv ob qho tib si amorphous thiab crystalline xeev. Amorphous Pla tsis tshua ruaj khov thiab ntau dua siab mus ntaus nkauj thiab kev hloov pauv sab hauv thaum lub tshuab luam ntawv. Crystallization yog cov txheej txheem uas ua tiav cov kab txuas polymer nyob hauv cov pla flaam, muab nws cov qauv ua kom ruaj khov thiab ruaj khov. Qhov no ua rau:
Txhim kho qhov tseeb qhov tseeb: crystallized PLA tsawg yuav ua rau warp thaum lub tshuab luam ntawv.
Txhim kho cov khoom siv mechanical: crystallized pla feem ntau cov khoom pov tseg siab dua lub zog thiab tawv tawv.
Zoo luam tawm zoo: Crystallized Pla feem ntau ua rau cov npoo smoother thiab tsawg dua qhov tsis xws luag.
Cov kauj ruam kauj ruam-ib-kauj ruam
Khoom npaj:
Kuaj xyuas cov ntaub ntawv no: Ua kom cov khoom siv pla yog pub dawb paug los yog kev puas tsuaj.
Chaw thau khoom: thauj cov pla lus rau hauv lub tshuab ziab khaub ncaws crystallizer rov qab raws li cov chaw tsim khoom cov lus qhia.
Crystallization:
Cua sov: lub tshuab ziab khaub ncaws ua kom sov rau filament rau ib qho tshwj xeeb, feem ntau ntawm 150 ° C thiab 190 ° C. Qhov ntsuas kub no txhawb nqa cov kev sib ncag ntawm cov saw polymer.
Lub tsev nyob: Cov ntsiab lus muaj nyob rau qhov kub no rau lub sijhawm tshwj xeeb kom tso cai rau ua tiav crystallization. Lub sijhawm nyob tuaj yeem sib txawv raws li hom filament thiab qib xav tau ntawm crystallinity.
Cua txias: Tom qab lub sijhawm nyob, cov ntsiab lus yog txias qeeb mus rau chav tsev kub. Cov txheej txheem cua txias no pab kom ruaj khov kho cov qauv crystalline.
Drying:
Yoov Tshem Tawm Tshem Tawm: Ib zaug crystammed, cov ntsiab lus no feem ntau qhuav rau tshem tawm cov dej noo seem uas yuav tau nqus thaum lub sij hawm crystallization txheej txheem. Cov kauj ruam no yog qhov tseem ceeb rau kev ua kom zoo tshaj plaws.
Unloading:
Txias: Tso cai rau filamam kom txias ua ntej kev tsis tuaj yeem.
Cia: Muab cov crystallized thiab qhuav filamament nyob rau hauv ib lub taub ntim kaw kom tiv thaiv nws los ntawm reabsorbing ya raws.
Cov txiaj ntsig ntawm kev siv pla crystallizer tshuab ziab khaub ncaws
Txhim Kho Cov Ntawv Luam Khoom Zoo: Crystallized Pla ua rau muaj zog, ntau cov ntawv luam tawm muaj tseeb.
Txo warping: crystallized pla yog tsawg dua qub rau warping, tshwj xeeb tshaj yog rau cov ntawv loj lossis cov khoom loj nrog cov khoom loj.
Txhim kho cov kws kho tshuab: Crystallized PLA feem ntau ua rau pom cov khoom siab dua, cuam tshuam, thiab cua sov ua kom tsis kam.
Cov txiaj ntsig zoo ib yam: los ntawm kev siv lub tshuab ziab khaub ncaws ua kom huv si, koj tuaj yeem ua kom koj cov ntaub ntawv pla yog npaj rau kev luam ntawv, ua rau ntau cov txiaj ntsig tau zoo.
Xaiv txoj cai crystallizer tshuab ziab khaub ncaws
Thaum xaiv lub pla crystallizer tshuab ziab khaub ncaws, xav txog cov hauv qab no:
Lub peev xwm: Xaiv lub tshuab ziab khaub ncaws uas tuaj yeem ua raws li cov nyiaj uas koj feem ntau siv.
Ntau yam: kom lub tshuab ziab khaub ncaws tuaj yeem ncav cuag cov kev pom zoo crystallization kub rau koj cov PLA tshwj xeeb.
Lub sijhawm nyob: Xav txog theem yam xav tau ntawm crystallotrinity thiab xaiv lub tshuab ziab khaub ncaws nrog lub sijhawm uas tsim nyog.
Lub peev xwm ziab: yog tias yuav tsum ziab, kom lub tshuab ziab khaub ncaws muaj kev ua haujlwm kom qhuav.
Tag
Siv lub tshuab ziab khaub ncaws pla crystallizer yog cov kauj ruam tseem ceeb hauv kev ua haujlwm ntawm cov kev ua tau zoo ntawm cov ntaub ntawv pla. Los ntawm kev ua raws li cov txheej txheem ntawm cov kauj ruam ntawm cov ntawv no, koj tuaj yeem npaj tau tias koj cov PLA tau npaj kom zoo rau kev luam tawm, ua rau muaj txiaj ntsig zoo thiab muaj kev ntseeg siab.
Lub Sijhawm Post: Lub Yim-28-2024