Cov kws tshawb fawb los ntawm lub teb chaws Yelemees thiab Netherlands tab tom tshawb nrhiav cov khoom tshiab uas zoo rau ib puag ncigPLAcov ntaub ntawv. Lub hom phiaj yog los tsim cov ntaub ntawv ruaj khov rau kev siv kho qhov muag xws li lub teeb taub hau tsheb, lub lens, cov yas reflective lossis lub teeb qhia. Tam sim no, cov khoom no feem ntau yog ua los ntawm polycarbonate lossis PMMA.
Cov kws tshawb fawb xav nrhiav cov yas uas ua los ntawm cov khoom siv bio-based los ua lub teeb taub hau tsheb. Nws qhia tau tias polylactic acid yog cov khoom siv tsim nyog.
Los ntawm txoj kev no, cov kws tshawb fawb tau daws ntau yam teeb meem uas cov yas ib txwm muaj ntsib: thawj zaug, tig lawv txoj kev xav mus rau cov peev txheej rov ua dua tshiab tuaj yeem txo qhov kev nyuaj siab los ntawm cov roj av rau kev lag luam yas; qhov thib ob, nws tuaj yeem txo cov pa roj carbon dioxide; qhov thib peb, qhov no cuam tshuam txog kev xav txog tag nrho lub neej ntawm cov khoom siv.
"Tsis yog tsuas yog polylactic acid muaj qhov zoo ntawm kev ruaj khov xwb, tab sis nws kuj muaj cov khoom siv kho qhov muag zoo heev thiab siv tau rau hauv cov spectrum pom ntawm cov nthwv dej electromagnetic," Dr. Klaus Huber, tus xibfwb ntawm University of Paderborn hauv lub tebchaws Yelemees hais.
Tam sim no, ib qho ntawm cov teeb meem uas cov kws tshawb fawb kov yeej yog kev siv polylactic acid hauv cov teb uas cuam tshuam nrog LED. LED yog lub npe hu ua lub teeb pom kev zoo thiab zoo rau ib puag ncig. "Tshwj xeeb, lub neej ua haujlwm ntev heev thiab lub teeb pom kev zoo, xws li lub teeb xiav ntawm LED teeb, ua rau muaj kev thov ntau 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 kwv yees li 60 degrees. Txawm li cas los xij, LED teeb tuaj yeem ncav cuag qhov kub thiab txias siab txog 80 degrees thaum ua haujlwm.
Lwm qhov teeb meem nyuaj yog qhov crystallization ntawm polylactic acid. Polylactic acid tsim cov crystallites ntawm ib ncig ntawm 60 degrees, uas ua rau cov khoom tsis meej. Cov kws tshawb fawb xav nrhiav txoj hauv kev kom tsis txhob muaj qhov crystallization no; lossis ua kom cov txheej txheem crystallization tswj tau ntau dua - yog li qhov loj ntawm cov crystallites uas tsim yuav tsis cuam tshuam rau lub teeb.
Hauv Paderborn chav kuaj, cov kws tshawb fawb tau txiav txim siab thawj zaug txog cov khoom siv molecular ntawm polylactic acid kom hloov pauv cov khoom siv, tshwj xeeb tshaj yog nws lub xeev yaj thiab crystallization. Huber yog tus saib xyuas kev tshawb nrhiav seb cov khoom ntxiv, lossis lub zog hluav taws xob, tuaj yeem txhim kho cov khoom siv ntawm cov khoom siv. "Peb tau tsim lub teeb me me-lub kaum sab xis tshwj xeeb rau qhov no los kawm txog kev tsim cov siv lead ua lossis cov txheej txheem yaj, cov txheej txheem uas muaj kev cuam tshuam loj rau kev ua haujlwm ntawm lub teeb," Huber hais.
Ntxiv rau kev paub txog kev tshawb fawb thiab kev siv tshuab, qhov project no yuav muaj txiaj ntsig zoo rau kev lag luam tom qab kev siv. Pab neeg xav tias yuav muab nws daim ntawv teb thawj zaug rau thaum kawg ntawm xyoo 2022.
Lub sijhawm tshaj tawm: Kaum Ib Hlis-09-2022