Kodi matumba apulasitiki owonongeka ndi biodegradable ndi chiyani?
Matumba apulasitiki opangidwa ndi biodegradable ndi matumba apulasitiki okonda zachilengedwe omwe amawonongeka m'madzi ndi mpweya woipa chifukwa cha tizilombo toyambitsa matenda mu composting mikhalidwe, popanda kuchititsa dothi kawopsedwe kapena kuipitsidwa kwachiwiri. Zomwe zimagwiritsidwa ntchito popanga ndizo:
PBAT (polybutylene adipate/terephthalate), PLA (polylactic acid), PCL (polycaprolactone), PHA (polyhydroxyalkanoate), ndi ma polima ena owonongeka.
Kodi matumba a biodegradable amawonongeka bwanji? Ndi mikhalidwe yotani yakuwonongeka?
Kuwonongeka pansi pamikhalidwe ya kompositi
Mkhalidwe wa kompositi: Chinyezi choposa 95%, nthaka, kutentha (28-58 digiri), ndi tizilombo tating'onoting'ono.
Kodi matumba apulasitiki osawonongeka-ndi chiyani?
Zida zomwe zimangowonongeka kukhala tizidutswa tating'ono ndipo sizingasinthidwe kukhala madzi ndi carbon dioxide mkati mwa nthawi yodziwika. Zinthu zomwe zimatha kujambula zithunzi (monga d2W ndi P-Life) zimawonjezera 1-2% ya photooxidative ku zinthu zakale za PE. Palinso zida zosakanikirana za PE ndi wowuma, momwe gawo la wowuma likhoza kunyonyotsoka, koma gawo lotsala la PE silingawonongeke.
Kodi matumba apulasitiki osawonongeka ndi otani?
Malinga ndi EU ndi dziko mfundo, zoposa 90% ya zigawo utomoni ayenera biodegraded kukhala madzi ndi carbon dioxide.
Kodi pali kusiyana kotani pakati pa matumba owonongeka ndi biodegradable ndi matumba wamba apulasitiki? Kodi kuzindikira?
Kuphatikiza pa kompositi, njira zodziwikiratu mwachangu zilipo:
Infrared spectroscopy (kuyerekeza mapangidwe a maselo) kuti azindikire mwachangu kapangidwe ka matumba apulasitiki
Chemical pyrolysis (zida zowonongeka zimatha kuwola mwachangu pansi pamikhalidwe yotentha yamchere, pomwe matumba apulasitiki wamba sangatero)
Kodi alumali moyo wa matumba biodegradable ndi chiyani?
Miyezi 12 yosindikizidwa (yotetezedwa ku chinyezi, nthaka, kuwala, etc.)
Kodi PLA ndi chiyani ndipo PBAT ndi chiyani?
PLA ndi polima opangidwa ndi akatembenuka wowuma mu lactic asidi monomers kudzera nayonso mphamvu, amene ndiye mankhwala polymerized mu asidi polylactic.
PBAT ndi polima wopangidwa ndi mankhwala polymerizing adipic acid, terephthalic acid, ndi butanediol.
Zida zonsezi zimatha kusinthika kukhala madzi ndi mpweya woipa ngati kompositi.
Chifukwa chiyani kuwonjezera PBAT?
PBAT ili ndi kusinthasintha kwakukulu, kusinthika, ndi kukana kutentha kwakukulu ndi kutsika, komwe kungakwaniritse zosowa za mafilimu. Kuphatikiza apo, PBAT imapezeka ponseponse, yosavuta kupanga{1}}kuchuluka, komanso yotsika-yotsika mtengo, kupangitsa kuti ikhale chinthu chabwino kwambiri chosinthira zida za polyolefin.
