Ndi chitukuko chachangu cha ma CD ma CD, luso laukadaulo wazinthu zogwiritsira ntchito komanso kuwonjezereka kwa malingaliro achitetezo achilengedwe a anthu, ma CD apulasitiki ochulukirapo amapangidwa ndi zinthu zachilengedwe.Ngati malinga ndi kupanga zinthu zopangira, ndiye magulu atatu akulu a matumba a pulasitiki zachilengedwe: pulasitiki zobwezerezedwanso, mapulasitiki owonongeka ndi pulasitiki yodyedwa.
Pulasitiki Wokonzedwanso
Pulasitiki yobwezerezedwanso ndikugwiritsanso ntchito pulasitiki, kudzera pamakina akupera, kuti amalize kugwiritsanso ntchito pulasitiki.
Pulasitiki yobwezerezedwanso imatanthawuza zinthu zopangira pulasitiki zomwe zimapezedwanso pambuyo pokonza zinyalala za pulasitiki pogwiritsa ntchito njira zakuthupi kapena zamankhwala monga kukonzanso, kusungunula granulation ndikusintha, komwe ndikugwiritsanso ntchito pulasitiki.
Ubwino waukulu wa zobwezerezedwanso pulasitiki ndithudi otsika mtengo kuposa zinthu zatsopano mtengo, ngakhale izo pa ntchito wonse ndi katundu si zabwino monga zinthu zatsopano ndi amphamvu, koma sitiyenera kugwiritsa ntchito zambiri mankhwala anapanga katundu ndi ntchito ya zinthu zonse zabwino kupanga izo, kotero kuti anawononga zambiri zosafunika makhalidwe, ndi zinthu reworked ndi osiyana, malinga ndi zosowa zosiyanasiyana, Kungofunika pokonza mbali inayake ya khalidwe, akhoza kupanga lolingana mankhwala. , kotero kuti palibe kutaya kwa chuma.
Pulasitiki Wowonongeka
Mapulasitiki owonongeka amatanthawuza mapulasitiki omwe amawonongeka mosavuta m'chilengedwe chifukwa cha kuwonjezera zina zowonjezera (monga wowuma, wowuma wosinthidwa kapena mapaipi ena, photosensitizer, biodegradation agent, etc.) popanga.Mapulasitiki owonongeka amagwera m'magulu anayi akuluakulu:
1.Biodegradable Pulasitiki
Youma, safuna kupewa kuwala, osiyanasiyana ntchito, osati angagwiritsidwe ntchito ulimi pulasitiki filimu, ma CD matumba, ndipo ankagwiritsa ntchito m'munda wa mankhwala.Ndi chitukuko cha biotechnology yamakono, mapulasitiki osawonongeka apatsidwa chidwi kwambiri ndikukhala malo atsopano okhudzidwa ndi kafukufuku ndi chitukuko.
2.Pulasitiki Wowonongeka
Photosensitizer imawonjezeredwa ku pulasitiki kuti pang'onopang'ono iwonongeke pansi pa dzuwa.Ndiwo m'badwo wakale wa mapulasitiki owonongeka, ndipo kuipa kwake ndikuti nthawi yowonongeka ndi yosayembekezereka chifukwa cha kuwala kwa dzuwa ndi kusintha kwa nyengo, choncho n'zosatheka kulamulira nthawi yowonongeka.
3.Kuwonongeka kwamadzi a Pulasitiki
Onjezani zinthu zomwe zimayamwa madzi mu pulasitiki, mutatha kugwiritsa ntchito, kutaya m'madzi kumatha kusungunuka, zomwe zimagwiritsidwa ntchito kwambiri pamankhwala ndi zida zathanzi (monga magolovesi azachipatala), zosavuta kuwononga ndi mankhwala ophera tizilombo.
4. Pulasitiki yowala/yowonongeka
Photodegradation ndi tizilombo ting'onoting'ono kuphatikiza kalasi pulasitiki, ali onse kuwala ndi tizilombo kuwonongeka makhalidwe pulasitiki.
Pulasitiki Yodyera
Pulasitiki yodyera ndi mtundu wa ma CD odyedwa, ndiye kuti, zotengera zodyedwa, zomwe nthawi zambiri zimakhala ndi wowuma, mapuloteni, polysaccharide, mafuta, zinthu zomwe zimagwiritsidwa ntchito kwambiri monga kukulunga pulasitiki, filimu yolongedza, kuyika kwapamwamba, kuyika chakudya, kuyika pastry, zokometsera phukusi, etc.
Ndi chitukuko cha mafakitale amakono a zakudya, kulongedza zakudya kumasinthidwa nthawi zonse.Mtundu watsopano wazinthu zamakono zopangira chakudya, zopangira zodyera, zomwe zimatha kusintha kutsutsana pakati pa zida zonyamula ndi kuteteza chilengedwe, ndizodziwika bwino.Zomangira zodyera zimatanthawuza chinthu chapadera chomwe chimatha kusinthidwa kukhala chodyera nyama kapena anthu ntchito yonyamula ikakwaniritsidwa.Zopangira ma CD zodyedwa ndi mtundu wapaketi wopanda zinyalala, ndi mtundu wazinthu zopangira zoteteza zachilengedwe.
Nthawi yotumiza: Oct-13-2022