● Nyob rau hauv lub neej txhua hnub, cov hnab yas muaj ntau heev, thiab hom hnab yas kuj muaj ntau yam. Feem ntau, peb tsis tshua nyiam cov khoom ntawm cov hnab yas thiab qhov cuam tshuam rau ib puag ncig tom qab lawv muab pov tseg. Nrog kev maj mam nce qib ntawm "txiav yas yas", ntau thiab ntau tus neeg tau txais kev pab tau pib them nyiaj rau cov hnab yas degradable. Ntau tus neeg muas zaub yuav hloov mus rau lub hnab yas degradable, txawm li cas los xij ntau tus neeg siv khoom tsis paub qhov txawv ntawm cov hnab yas zoo tib yam, cov hnab yas degradable thiab cov hnab biodegradable. Cia kuv qhia koj.
Peb hom hnab yas hauv kev txhais, qhov zoo thiab qhov tsis zoo
Txhais:
● Cov hnab yas zoo ib yam yog lwm cov ntaub ntawv yas xws li PE, thiab cov khoom tseem ceeb yog cob. Resin yog hais txog lub polymer compound uas tsis tau tov nrog ntau yam additives. Resin suav txog li 40 mus 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. Cov hnab yas biodegradable muaj lub teb chaws ib puag ncig tiv thaiv tus qauv GB / T21661-2008, thaum cov hnab yas tsoos tsis tas yuav ua raws li tus qauv no. Cov hnab yas ib txwm siv 200 xyoo lossis ntau dua kom degrade tom qab muab pov tseg. Ua rau "dawb paug" rau ib puag ncig.
●Degradable hnab yas: Lus, nws yog ib lub hnab yas degradable, uas txhais tau hais tias nws yuav degraded, tab sis nws tseem muaj cov yas thiab lwm yam khoom xyaw, tab sis nws tsuas yog ib feem ntawm degraded, tsis tag nrho degraded. Nws yog tsuas yog ua los ntawm polyethylene yas, ntxiv nrog photodegradant thiab calcium carbonate thiab lwm yam ntxhia hmoov, tseem hu ua photodegradable hnab yas. Hom hnab yas no yog decomposed nyob rau hauv qhov kev txiav txim ntawm lub hnub ci. Txawm li cas los xij, polyethylene tom qab fen decontamination tseem muaj nyob rau hauv ib puag ncig ntuj. Txawm hais tias qhov muaj kuab paug dawb tsis tuaj yeem pom nyob rau hauv txoj kab ntawm qhov pom, cov pa phem dawb tseem tab tom ua rau peb ib puag ncig ib puag ncig hauv daim ntawv me me, uas tuaj yeem hais tau kho cov tsos mob tab sis tsis yog lub hauv paus ua rau. Txhawm rau muab nws yooj yim, tom qab pov tseg lub hnab yas degradable, nws tseem yuav ua phem rau ib puag ncig, ib yam li cov hnab yas ib txwm muaj. Nws qhov chaw kawg yog qhov tseeb tib yam li cov hnab yas ib txwm muaj. Tom qab muab pov tseg, lawv txhua tus nkag mus rau hauv qhov chaw pov tseg lossis raug hlawv, thiab tsis tuaj yeem degraded los ntawm kev lag luam tshwj xeeb composting. Yog li, "degradable" tsuas yog "degradable", tsis sib npaug rau "tag nrho biodegradation". Hauv kev nkag siab, cov hnab yas degradable tsis yog ib qho kev daws teeb meem rau "dawb paug", lossis "panacea" los daws cov hnab yas ua paug. Hauv qhov tseem ceeb, nws tseem yuav tsim ntau cov pov tseg, thiab cov hnab yas degradable tiag Tsis degraded.
●Biodegradable hnab yas: Cov khoom siv ntawm cov hnab yas biodegradable yog tsim los ntawm PLA (polyacid) thiab PBAT (polyadipic acid). Cov ntaub ntawv no kuj suav nrog PHAS, PBA, PBS, thiab lwm yam, uas tau lees paub tias yog cov khoom siv zoo ib puag ncig. Cov khoom tsis zoo ntsuab. Biodegradable hnab yas khoom, tseem hu ua biodegradable yas, yog hais txog kev ua ntawm cov kab mob uas muaj nyob rau hauv cov xwm txheej nyob rau hauv tej yam kev mob xws li av los yog xuab zeb av, los yog 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. Ua rau degradation, thiab thaum kawg degrades tag nrho rau hauv carbon dioxide (CO2), methane (CH4), dej (H2O) thiab cov mineralized inorganic ntsev ntawm cov ntsiab lus nws muaj, nrog rau cov tshiab biomass plastics.
Qhov zoo thiab qhov tsis zoo:
Ordinary hnab yas
Qhov zoo
pheej yig
Lub teeb hnyav heev
muaj peev xwm loj
Qhov tsis zoo
× Lub voj voog degradation
yog ntev heev
× Yooj yim rau ua
Lub hnab yas degradable
Qhov zoo
Ua tiav degraded,
tsim cov pa roj carbon dioxide thiab dej
Zoo tensile zog thiab ductility
cais cov ntxhiab tsw, bacteriostatic
thiab anti-mildew zog
Biodegradable hnab yas
Biodegradable hnab yasyog tag nrho biocompostable thiab degradable hnab. Nyob rau hauv cov xwm txheej ntawm compost degradation, lawv tuaj yeem ua tiav biodegraded hauv 180 hnub. Cov khoom degradation yog carbon dioxide thiab dej, uas ncaj qha nkag mus rau hauv av thiab yog absorbed los ntawm cov nroj tsuag, rov qab mus rau hauv av, los yog nkag mus rau hauv ib puag ncig. Nws tuaj yeem degraded yam tsis muaj kuab paug rau ib puag ncig, kom nws los ntawm xwm thiab belongs rau xwm. Biodegradable hnab yas tuaj yeem hais tias yog ib qho kev hloov pauv rau cov yas, uas 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 los daws. Nws tuaj yeem daws qhov teeb meem ntawm cov pa phem yas, tsis yog kho cov tsos mob. Kev siv cov hnab yas biodegradable zoo heev txo cov pa phem ntawm cov khoom yas rau ib puag ncig. Nws yog ib puag ncig tus phooj ywg, noj qab haus huv thiab huv si, thiab tuaj yeem siv nrog kev ntseeg siab. Cov hnab yas biodegradable muaj qhov degradability zoo dua li lwm cov ntaub ntawv, siv ntev dua li cov hnab ntawv, thiab raug nqi tsawg dua cov hnab ntawv.
Ua raws & tiv tauj peb
Koj tuaj yeem pom ntau yam khoom sib txawv hauv peb lub khw. Ntau cov khoom nthuav dav thov ua raws li peb lub khw, peb yuav hloov kho cov ntaub ntawv ob zaug hauv ib lub lis piam thiab txais tos hu rau peb, peb yuav teb koj tam sim ntawd. Ua tsaug rau koj nyeem ~
Lub sij hawm xa tuaj: Mar-10-2022