Cov ntaub ntawv hnab yas biodegradable yog xa mus rau ib chav kawm ntawm cov yas uas degraded los ntawm kev ua ntawm cov kab mob xws li cov kab mob, pwm (fungi) thiab algae uas muaj nyob rau hauv qhov. Lub hnab yas zoo tshaj plaws biodegradable yog lub hnab yas ua los ntawm cov khoom siv polymer nrog kev ua haujlwm zoo, uas tuaj yeem decomposed los ntawm ib puag ncig cov kab mob tom qab muab pov tseg, thiab thaum kawg inorganicized los ua ib feem tseem ceeb ntawm cov pa roj carbon monoxide. "Paper" yog cov khoom siv biodegradable, thaum "synthetic plastic" yog cov khoom siv polymer. Yog li ntawd, lub hnab yas biodegradable tag nrho yog lub hnab yas ua los ntawm cov khoom siv polymer nrog ob qho khoom siv ntawm "daim ntawv" thiab "synthetic plastic".
Cov ntaub ntawv ntim cov hnab yas biodegradable, tseem hu ua biodegradable plastics, xa mus rau cov khoom siv ntuj tsim muaj nyob rau hauv cov xwm txheej xws li av thiab / lossis cov av xuab zeb, thiab / lossis nyob rau hauv tej yam kev mob xws li composting tej yam kev mob los yog anaerobic digestion tej yam kev mob los yog aqueous kab lis kev cai daws teeb meem. Qhov kev txiav txim ntawm cov kab mob ua rau degradation thiab thaum kawg ua tiav degradation ntawm plastics rau carbon dioxide (CO2) los yog / thiab methane (CH4), dej (H2O) thiab nws cov mineralized inorganic ntsev ntawm cov ntsiab lus nws muaj, nrog rau cov biomass tshiab.
Cov yas yog cov khoom sib xyaw polymer (macromolecules) uas yog polymerized los ntawm monomers ua raw khoom los ntawm polyaddition los yog polycondensation tshua. Lawv muaj nruab nrab tsis kam mus deformation thiab yog nruab nrab ntawm fibers thiab roj hmab. Lawv yog tsim los ntawm hluavtaws resins thiab muab tub lim, plasticizers, stabilizers Agents, lubricants, pigments thiab lwm yam additives.
Lub ntsiab ntawm cov yas yog resin. Resin yog hais txog cov khoom siv polymer uas tsis tau tov nrog ntau yam khoom ntxiv. Lub sij hawm resin yog Ameslikas lub npe hu ua lipids secreted los ntawm cov tsiaj thiab nroj tsuag, xws li rosin thiab shellac. Resin suav txog li 40 feem pua rau 100 feem pua ntawm tag nrho qhov hnyav ntawm cov yas. Cov yam ntxwv ntawm plastics feem ntau yog txiav txim siab los ntawm qhov xwm txheej ntawm cov resin, tab sis cov khoom ntxiv kuj ua lub luag haujlwm tseem ceeb. Qee cov yas yog tsim los ntawm cov khoom siv hluavtaws uas tsis muaj lossis me me ntxiv, xws li plexiglass, polystyrene, thiab lwm yam.
Qhov txawv ntawm cov hnab yas biodegradable thiab cov hnab yas zoo tib yam
1. Cov khoom sib txawv
Lub hnab yas biodegradable tag nrho (uas yog, ib puag ncig tus phooj ywg lub hnab yas) yog ua los ntawm PLA, PHAs, PBA, PBS thiab lwm yam khoom siv polymer. Cov hnab yas zoo tib yam uas tsis yog-degradable yog lwm cov ntaub ntawv yas xws li PE.
2. Cov qauv tsim khoom sib txawv
Lub hnab yas biodegradable tag nrho yuav tsum tau ua raws li lub teb chaws tus qauv GB/T21661-2008, uas tau mus txog tus qauv kev tiv thaiv ib puag ncig. Cov hnab yas zoo tib yam uas tsis yog degradable tsis tas yuav ua raws li tus qauv no.
3. Lub sij hawm decomposition sib txawv Cov hnab yas biodegradable feem ntau tuaj yeem decomposed hauv ib xyoos, thaum Olympic ntsuab hnab tuaj yeem pib decompose 72 hnub tom qab lawv muab pov tseg. Nws yuav siv 200 xyoo rau cov hnab yas uas tsis yog-degradable zoo tib yam cov hnab yas kom degrade.
Qhov zoo ntawm kev siv tag nrho biodegradable hnab yas
1. Kev tiv thaiv ib puag ncig: Kev siv tag nrho cov hnab yas biodegradable tuaj yeem txo qhov teeb meem ntawm cov pa phem dawb los ntawm qhov tsis muaj peev xwm ntawm cov hnab yas zoo tib yam rau decompose.
2. Kev ua tau zoo heev: Lub hnab yas biodegradable tag nrho siv cov hmoov txhuv nplej siab ua cov khoom siv tseem ceeb, lub peev xwm degradation zoo dua lwm cov ntaub ntawv, lub neej kev pab cuam ntev dua li ntawm lub hnab ntawv, thiab tus nqi qis dua li ntawm lub hnab ntawv. .
3. Exquisite thiab ntau yam: Cov hnab yas biodegradable tag nrho thiab cov hnab yas zoo tib yam muaj cov haujlwm zoo ib yam tshwj tsis yog cov khoom sib txawv thiab cov khoom siv. Lawv tuaj yeem luam tawm zoo nkauj, nruab nrab ntawm qhov loj me, thiab tuaj yeem ntim ntau yam khoom.
4. Recycling: Lub hnab yas biodegradable tag nrho muaj cov yam ntxwv ntawm softness, hnav tsis kam, foldability thiab zoo kev ntxhib los mos, thiab lub sij hawm recycling yog ntev.
