Cov kws tshawb fawb los ntawm lub teb chaws Yelemees thiab Netherlands tab tom tshawb nrhiav tshiab ib puag ncig tus phooj ywgPLAcov ntaub ntawv. Lub hom phiaj yog los tsim cov ntaub ntawv muaj txiaj ntsig zoo rau kev siv kho qhov muag xws li tsheb teeb taub hau, lo ntsiab muag, cov khoom siv hluav taws xob los yog cov teeb pom kev zoo. Txog tam sim no, cov khoom no feem ntau yog ua los ntawm polycarbonate lossis PMMA.
Cov kws tshawb fawb xav nrhiav bio-raws li yas los ua lub taub hau tsheb. Nws hloov tawm tias polylactic acid yog cov khoom siv sib tw tsim nyog.
Los ntawm txoj kev no, cov kws tshawb fawb tau daws ntau yam teeb meem uas tau ntsib los ntawm cov tsoos plastics: ua ntej, tig lawv cov kev xav rau cov khoom siv txuas ntxiv tuaj yeem txo qhov siab los ntawm cov roj crude ntawm kev lag luam plastics; thib ob, nws tuaj yeem txo cov pa roj carbon dioxide emissions; Thib peb, qhov no suav nrog kev xav txog tag nrho cov khoom siv lub neej voj voog.
"Tsis tsuas yog polylactic acid muaj qhov zoo ntawm kev ruaj ntseg, nws kuj muaj cov khoom siv kho qhov muag zoo heev thiab tuaj yeem siv tau rau hauv qhov pom ntawm cov hluav taws xob tsis zoo," hais tias Dr. Klaus Huber, tus xibfwb ntawm University of Paderborn hauv tebchaws Yelemes.
Tam sim no, ib qho ntawm cov teeb meem uas cov kws tshawb fawb tau kov yeej yog kev siv cov polylactic acid nyob rau hauv LED-txog teb. LED yog lub npe hu ua lub teeb pom kev zoo thiab ib puag ncig zoo. "Tshwj xeeb, lub neej ua haujlwm ntev heev thiab pom cov hluav taws xob pom, xws li lub teeb xiav ntawm LED teeb, tso siab rau cov khoom siv kho qhov muag," piav qhia Huber. Qhov no yog vim li cas cov khoom siv ruaj khov heev yuav tsum tau siv. Qhov teeb meem yog: PLA ua mos ntawm ib ncig ntawm 60 degrees. Txawm li cas los xij, LED teeb tuaj yeem ncav cuag qhov kub thiab txias li 80 degrees thaum ua haujlwm.
Lwm qhov nyuaj nyuaj yog crystallization ntawm polylactic acid. Polylactic acid tsim crystallites ntawm ib ncig ntawm 60 degrees, uas ua rau cov khoom tsis pom. Cov kws tshawb fawb xav nrhiav txoj hauv kev kom tsis txhob muaj qhov crystallization; los yog ua kom cov txheej txheem crystallization tswj tau ntau dua - kom qhov loj ntawm crystallites uas tsim yuav tsis cuam tshuam rau lub teeb.
Hauv Paderborn lub chaw soj nstuam, cov kws tshawb fawb thawj zaug txiav txim siab cov khoom molecular ntawm polylactic acid txhawm rau hloov cov khoom siv, tshwj xeeb yog nws lub xeev melting thiab crystallization. Huber yog lub luag haujlwm rau kev tshawb nrhiav qhov twg cov khoom siv ntxiv, lossis lub zog hluav taws xob, tuaj yeem txhim kho cov khoom ntawm cov khoom. Huber tau hais tias "Peb tau tsim lub kaum sab xis me me rau lub teeb tawg tshwj xeeb rau qhov no los kawm txog kev tsim cov siv lead ua lossis cov txheej txheem melting, cov txheej txheem uas muaj feem cuam tshuam rau kev ua haujlwm kho qhov muag," Huber hais.
Ntxiv nrog rau kev paub txog kev tshawb fawb thiab thev naus laus zis, qhov project tuaj yeem xa cov txiaj ntsig kev lag luam tseem ceeb tom qab siv. Pab pawg cia siab tias yuav muab nws thawj daim ntawv teb thaum kawg ntawm 2022.
Post lub sij hawm: Nov-09-2022