Kodi mungadziwe bwanji ngati chinthucho chikhoza kuwonongeka?Zizindikiro zitatu ziyenera kuyang'aniridwa: kuchuluka kwa kuwonongeka kwachibale, chinthu chomaliza ndi zitsulo zolemera.Mmodzi wa iwo sagwirizana ndi miyezo, kotero izo si ngakhale mwaukadaulo biodegradable.
Pakalipano, pali mitundu iwiri ikuluikulu ya mapulasitiki owonongeka achinyengo: kulowetsa malingaliro ndi zotsalira pambuyo pa kuwonongeka.Chifukwa chachikulu chopangira mapulasitiki ambiri abodza owonongeka ndikuti mfundo zoletsa pulasitiki zapangitsa kuti kufunikira kwapanyumba kwa mapulasitiki owonongeka achuluke.Pakalipano, "kuletsa pulasitiki" kumangoletsedwa kotheratu pazitsulo zapulasitiki, ndipo mphamvu zowonongeka zapakhomo zimatha kuphimbidwa.M'tsogolomu, zipangizo zowonongeka zidzatulutsidwa pang'onopang'ono ndikugwiritsidwa ntchito paziwiya zonse zodyera, ndipo mgwirizano pakati pa zopereka ndi zofunikira ziyenera kufananizidwa pang'onopang'ono, koma miyezo ndi kuyang'anira zikusowa.Kuphatikizidwa ndi mtengo wapamwamba wa zinthu zenizeni zowonongeka, malonda amayendetsedwa ndi zokonda, luso lozindikiritsa ogula ndilofooka, zomwe zimabweretsa kuwonongeka kwabodza.
1. Lingaliro la pulasitiki losawonongeka limasinthidwa
Mapulasitiki achikhalidwe ndi zina zowonjezera zowonongeka kapena mapulasitiki a biobased amasakanikirana, ndipo lingaliro la "zakudya zamagulu" ndi "zoteteza chilengedwe" zimasinthidwa.Chiwopsezo chenichenicho chimakhala chochepa pamapeto pake, chomwe sichimakwaniritsa zofunikira za zinthu zowonongeka ndi miyezo ya biochemical.
Wu Yufeng, pulofesa ku Institute of Circular Economy ku Beijing University of Technology, poyankhulana ndi Consumption Daily kuti "kalasi yazakudya" ndi muyezo wadziko lonse wachitetezo chazinthu zopangira, osati chiphaso cha chilengedwe.“Tikanena za 'mapulasitiki owonongeka,' timatanthauza mapulasitiki omwe, m'mikhalidwe ina, amasweka kotheratu kukhala mpweya wa carbon dioxide kapena methane, madzi ndi biomass zina.Zowona zake, komabe, ambiri otchedwa 'mapulasitiki osasinthika' ndi zinthu zosakanizidwa zomwe zimaphatikiza mapulasitiki wamba ndi zina zowonjezera zowonongeka kapena mapulasitiki a biobased.Kuphatikiza apo, zinthu zina zamapulasitiki zimagwiritsa ntchito zida za pulasitiki zosawonongeka, monga polyethylene, zimawonjezera oxidation degradation agent, photodegradation agent, zomwe zimati 'zowonongeka', kuwonetsa msika, kusokoneza msika. ”
2. Zotsalira pambuyo pakuwola
Imawonjezera gawo lina la wowuma, kudzera mu mawonekedwe a wowuma biodegradable zida kugwa, Pe, PP, PVC, ndi zina za decomposed osati kutengeka ndi chilengedwe, koma chifukwa chosaoneka ndi maso nthawi zonse kukhala chilengedwe. , osati kuthandizira kukonzanso pulasitiki ndi kuyeretsa, kugawikana kwa pulasitiki kungapangitse kuwonongeka kwakukulu kwa chilengedwe.
Mwachitsanzo, D2W ndi D2W1 ndi oxidized biodegradation zowonjezera.Matumba apulasitiki opangidwa ndi PE-D2W ndi (PE-HD)-D2W1 ndi matumba apulasitiki okhala ndi okosijeni, atero a Liu Jun, mkulu wa Shanghai Institute of Quality Supervision and Inspection Technology komanso pulofesa wamkulu, pokambirana ndi Beijing. Nkhani.Ikuphatikizidwa mugulu lapano la GB/T 20197-2006 la mapulasitiki owonongeka.Koma njira yowonongeka ya pulasitiki yotereyi ndi yakuti zazikulu zimakhala zazing'ono ndipo zing'onozing'ono zimawonongeka, kuwasandutsa ma microplastics osaoneka.
Nthawi yotumiza: Nov-23-2022