Nrog rau kev txhim kho ntawm tib neeg lub neej, qhov kev thov rau cov khoom yas hauv Tib Neeg lub neej txhua hnub nce ntxiv, xws li cov hnab yas, cov tais yas, cov thawv noj su yas thiab lwm yam. Lub caij no, kev nce qib ntawm kev lag luam xa khoom noj tau ua rau muaj kev thov rau cov khoom yas ntau ntxiv. Qhov kev thov kuj muaj kev cuam tshuam loj heev rau peb ib puag ncig, vim tias cov khoom yas muaj teeb meem rau ib puag ncig.
Thaum muaj teeb meem ib puag ncig hnyav zuj zus, kev nrhiav lwm txoj hauv kev rau cov yas tau dhau los ua ib qho kev hloov pauv thoob ntiaj teb. Tom qab kev tshawb fawb thiab kev txhim kho tas mus li, cov khoom PLA tau maj mam nkag mus rau theem keeb kwm. Cov khoom PLA muaj lub luag haujlwm ntawm kev puas tsuaj, uas tuaj yeem puas tsuaj tag nrho hauv 90 hnub ntawm qhov kub thiab txias thiab ib puag ncig. Tib lub sijhawm, nws kuj muaj lub neej ua haujlwm ntev, khaws cia kom zoo, PLA tais thiab PLA thawv thiab lwm yam khoom tuaj yeem khaws cia rau ntau tshaj ib xyoos.
Cov Khoom Siv PLA Tshiab Uas Zoo Rau Ib Puag Ncig Biodegradable Trays thiab Thawv Rau Ntim Khoom Noj Txiv Hmab Txiv Ntoo
Poly (lactic acid) muaj kev ruaj khov zoo thermal, qhov kub ua tiav 170 ~ 230 ℃, tiv taus cov kuab tshuaj zoo, tuaj yeem ua tiav ntau txoj hauv kev, xws li extrusion, spinning, biaxial stretching, txhaj tshuaj molding. Ntxiv nrog rau kev ua biodegradable, cov khoom polylactic acid muaj biocompatibility zoo, gloss, pob tshab, kov tes thiab tiv taus kub.
Polylactic acid (PLA) yog ib yam khoom siv tshiab uas lwj tau los ntawm cov hmoov txhuv nplej siab uas tau los ntawm cov nroj tsuag uas rov ua dua tshiab xws li pob kws. Cov piam thaj tau los ntawm cov hmoov txhuv nplej siab los ntawm kev saccharification, thiab tom qab ntawd cov kua qaub lactic uas muaj qhov huv siab tau fermented los ntawm cov piam thaj thiab qee yam kab mob, thiab tom qab ntawd cov kua qaub polylactic uas muaj qhov hnyav molecular tau synthesized los ntawm kev siv tshuaj lom neeg. Nws muaj kev lwj zoo, thiab tuaj yeem lwj tag nrho los ntawm cov kab mob me me hauv xwm tom qab siv, thiab thaum kawg tsim cov pa roj carbon dioxide thiab dej. Nws tsis ua rau ib puag ncig qias neeg, uas yog qhov zoo heev rau kev tiv thaiv ib puag ncig, thiab tau lees paub tias yog cov khoom siv zoo rau ib puag ncig. Txoj kev kho yas feem ntau tseem yog kev hlawv, ua rau muaj ntau cov pa roj av uas tso tawm mus rau hauv huab cua, thaum cov yas POlylactic acid raug faus rau hauv av lwj, cov pa roj carbon dioxide ncaj qha mus rau hauv av cov organic teeb meem lossis nqus los ntawm cov nroj tsuag, yuav tsis raug tso tawm mus rau hauv huab cua, yuav tsis ua rau muaj cov nyhuv av noo.
Poly (lactic acid) muaj qhov zoo tshwj xeeb hauv kev siv cov khoom siv pov tseg, cov khoom ntim khoom noj thiab lwm yam khoom siv pov tseg vim nws tsis muaj teeb meem rau tib neeg lub cev. Nws tuaj yeem lwj tag nrho thiab ua tau raws li qhov xav tau siab ntawm lub ntiaj teb, tshwj xeeb tshaj yog European Union, Tebchaws Meskas thiab Nyiv rau kev tiv thaiv ib puag ncig. Tsis tas li ntawd, tom qab kev txhim kho thev naus laus zis, kev ua lag luam tau hloov kho los ntawm cov ntaub ntawv PLA, uas tuaj yeem kov yeej qhov tsis zoo ntawm cov khoom qub, thiab qee qhov txawm tias kub tiv taus txog li 120 ℃, tuaj yeem siv ua cov khoom siv microwave qhov cub.
Txawm li cas los xij, hais txog kev ua lag luam tam sim no, qhov rwb thaiv tsev thermal thiab lub peev xwm tshiab ntawm PLA cov khoom tsis sib xws los ntawm lwm cov khoom lwj, tab sis tus nqi ntawm PLA cov khoom siab dua lwm cov khoom lwj. Muaj ntau tus neeg xaiv bagasse ua cov khoom lwj, tab sis bagasse nqus cov roj, nqus dej, thiab cuam tshuam rau cov khoom ntim. Tsis tas li ntawd, bagasse pallets tuaj yeem ua pwm yog tias lawv tsis qhuav txaus.
Lub sijhawm tshaj tawm: Lub Ib Hlis-12-2022