Polylactic acid, yomwe imadziwikanso kuti polylactide, ndi ya banja la polyester.Polylactic acid (PLA) ndi polima wopangidwa ndi lactic acid monga zopangira zazikulu.Zopangira ndizochuluka ndipo zimatha kupangidwanso.Kapangidwe ka asidi a polylactic ndi wopanda zowononga, ndipo mankhwalawa amatha kukhala osawonongeka, pozindikira kufalikira kwachilengedwe, chifukwa chake ndi chinthu chabwino chobiriwira polima.Polylactic acid (PLA) ndi mtundu watsopano wa zinthu zomwe zimatha kuwonongeka.Amapangidwa kuchokera ku zinthu zowuma zotengedwa kuzinthu zongowonjezwdwanso za mbewu (monga chimanga) kudzera mu nayonso mphamvu, kenako n’kusanduka asidi wa polylactic kudzera mu kaphatikizidwe ka polima.
Polylactic acid ndi yoyenera kuwombera, kuumba jekeseni ndi njira zina zopangira.Ndi yosavuta pokonza ndi ambiri ntchito.Itha kugwiritsidwa ntchito pokonza zotengera zakudya zosiyanasiyana, chakudya chopakidwa, mabokosi a chakudya chamasana mwachangu, nsalu zosalukidwa, nsalu zamakampani ndi za anthu wamba kuchokera kumakampani kupita ku ntchito wamba.Ndiyeno zikhoza kukonzedwa mu nsalu zaulimi, nsalu zothandizira zaumoyo, fumbi, zinthu zaukhondo, nsalu zakunja za UV zosagwira ntchito, nsalu zamahema, mateti apansi, ndi zina zotero. Chiyembekezo cha msika ndi chodalirika kwambiri.Zitha kuwoneka kuti makina ake ndi mawonekedwe ake ndi abwino.
Ubwino wa PLA zopangira ndi chiyani?
1. Ili ndi biodegradability yabwino.Pambuyo ntchito, zikhoza kuonongeka kwathunthu ndi tizilombo m'chilengedwe pansi pa mikhalidwe yeniyeni, ndipo potsiriza kupanga mpweya woipa ndi madzi, popanda kuipitsa chilengedwe.Njira yochizira mapulasitiki wamba ikuyakabe ndikuwotchedwa, zomwe zimapangitsa kuti mpweya wambiri wowonjezera kutentha utulutsidwe mumlengalenga, pomwe mapulasitiki a polylactic acid (PLA) amakwiriridwa m'nthaka kuti awonongeke, ndipo mpweya woipa wa carbon dioxide umalowa mwachindunji mumlengalenga. nthaka organic kanthu kapena odzipereka ndi zomera, amene si kukhetsedwa mu mlengalenga ndipo sadzakhala kulenga wowonjezera kutentha kwenikweni.
2. Zabwino zamakina ndi zakuthupi.Ndiosavuta kuyikonza, yogwiritsidwa ntchito kwambiri, ndipo ili ndi chiyembekezo chabwino kwambiri pamsika.
3. Kugwirizana kwabwino ndi kuwonongeka.Amagwiritsidwanso ntchito kwambiri pazachipatala.
4. Polylactic acid (PLA) ndi ofanana ndi mapulasitiki opangira petrochemical muzinthu zofunikira zakuthupi ndipo amatha kugwiritsidwa ntchito popanga zinthu zosiyanasiyana.Poly (lactic acid) (PLA) ilinso ndi kuwala kwabwino komanso kuwonekera, komwe kuli kofanana ndi filimu yopangidwa ndi polystyrene ndipo silingaperekedwe ndi zinthu zina zomwe zimatha kuwonongeka.
5. Polylactic acid (PLA) ili ndi mphamvu yabwino kwambiri yochepetsera komanso ductility, ndipo imatha kupangidwanso ndi njira zosiyanasiyana zogwirira ntchito.Poly lactic acid (PLA) imatha kupangidwa kukhala zinthu zosiyanasiyana malinga ndi zosowa zamafakitale osiyanasiyana.
6. Filimu ya Poly (lactic acid) (PLA) imakhala ndi mpweya wabwino, mpweya wa okosijeni ndi carbon dioxide permeability, komanso ili ndi zizindikiro za kudzipatula kwa fungo.Mavairasi ndi nkhungu ndizosavuta kuziyika pamwamba pa mapulasitiki owonongeka, kotero pali kukayikira za chitetezo ndi ukhondo.Komabe, asidi wa polylactic ndiye mapulasitiki okhawo omwe amatha kuwonongeka omwe ali ndi antibacterial komanso anti-mold properties.
7. PLA ikatenthedwa, kutentha kwake kumafanana ndi pepala, lomwe ndi theka la mapulasitiki achikhalidwe (monga polyethylene).Kuphatikiza apo, sichidzatulutsanso mankhwala a nayitrogeni, sulfide ndi mpweya wina wapoizoni.
Nthawi yotumiza: Apr-11-2023