Biodegradable yas
Biodegradable yas hais txog ib hom yas uas degraded los ntawm kev ua ntawm cov kab mob hauv cov kab mob, xws li cov kab mob, pwm (fungi) thiab algae. Cov yas zoo tshaj plaws biodegradable yog cov khoom siv polymer uas muaj kev ua tau zoo, tuaj yeem decomposed tag nrho los ntawm ib puag ncig cov kab mob tom qab muab pov tseg, thiab thaum kawg inorganicized los ua ib feem ntawm cov pa roj carbon monoxide." Ntawv" yog ib yam khoom siv biodegradable, thaum" hluavtaws hluavtaws" yog ib yam khoom siv polymer. Yog li ntawd, biodegradable plastics yog cov ntaub ntawv polymer nrog ob qho tib si" ntawv" thiab" hluavtaws hluavtaws" khoom.
Suav lub npe scientific
Biodegradable yas
Kev faib tawm
Ua tiav creatures thiab kev puas tsuaj creatures
Cov ntsiab lus tseem ceeb
Ntuj polymer, aliphatic polyester, thiab lwm yam.
Lub npe txawv teb chaws
Biodegradable yas
feem ntau suav nrog
PBAT, PLA, thiab lwm yam.
Yam ntxwv
Muaj qee yam biodegradability nyob rau hauv ib puag ncig tej yam kev mob
cov ntsiab lus
1 txhais
2 kev faib tawm
3 daim ntawv thov
4 Kev tsim kho keeb kwm
5 Kev ua lag luam xwm txheej
6 cov teeb meem ntsig txog
7 kev ntsuas tshwj xeeb
1 txhais
Biodegradable plastics, tseem hu ua biodegradable plastics, xa mus rau qhov kev txiav txim ntawm cov kab mob nyob rau hauv cov xwm txheej xws li av thiab / los yog xuab zeb, thiab / los yog tej yam kev mob xws li composting tej yam kev mob, anaerobic digestion tej yam kev mob, los yog aqueous kab lis kev cai kua. Nws ua rau degradation, thiab thaum kawg degrades tag nrho rau hauv carbon dioxide (CO₂) los yog / thiab methane (CH₄), dej (H₂O) thiab mineralized inorganic ntsev ntawm cov ntsiab lus muaj nyob rau hauv, nrog rau cov tshiab biomass plastics.
2 kev faib tawm
Raws li cov khoom siv raw, biodegradable plastics tuaj yeem muab faib ua ob hom: bio-based biodegradable plastics thiab petrochemical-based biodegradable plastics.
Bio-based biodegradable plastics tuaj yeem muab faib ua plaub pawg: thawj qeb yog cov khoom siv ncaj qha los ntawm cov ntaub ntawv ntuj; qeb thib ob yog polymers tau los ntawm kev koom tes ntawm microbial fermentation thiab tshuaj synthesis; qeb thib peb yog cov polymers ncaj qha los ntawm cov kab mob Cov kab mob thib plaub yog cov khoom siv biodegradable tau los ntawm kev sib xyaw cov ntaub ntawv los yog cov ntaub ntawv no thiab lwm cov tshuaj biodegradable plastics.
Petrochemical-based biodegradable plastics xa mus rau cov yas tau los ntawm polymerizing petrochemical monomers los ntawm cov tshuaj synthesis, xws li PBAT, polybutylene succinate (PBS), carbon dioxide copolymer (PPC), thiab lwm yam. [1]
Starch-based tag nrho biodegradable yas
Starch-based tag nrho biodegradable yas
Raws li kev faib tawm ntawm cov txheej txheem biodegradation, biodegradable plastics tuaj yeem muab faib ua biodegradable plastics thiab puas biodegradable plastics. Kev puas tsuaj biodegradable plastics tam sim no feem ntau suav nrog cov hmoov txhuv nplej siab hloov pauv (lossis ntim) polyethylene PE, polypropylene PP, polyvinyl chloride PVC, polystyrene PS thiab lwm yam.
Ua tiav biodegradable plastics yog tsim los ntawm ntuj macromolecules (xws li cov hmoov txhuv nplej siab, cellulose, chitin) los yog cov khoom ua liaj ua teb thiab cov khoom lag luam los ntawm microbial fermentation lossis synthesis ntawm biodegradable macromolecules, xws li cov hmoov txhuv nplej siab thermoplastic, aliphatic polyesters, thiab polylactic acid, Starch / polyvinyl cawv, lwm yam yog txhua yam xws li yas.
Biodegradable plastics raws li cov hmoov txhuv nplej siab thiab lwm yam khoom ntuj tam sim no feem ntau suav nrog cov khoom hauv qab no: polylactic acid (PLA), polyhydroxyalkanoate (PHA), starch plastics, bio-engineering plastics, bio-general plastics (polyolefin thiab polychloride) Ethylene).
Raws li cov ntaub ntawv sib txawv, muaj tsawg kawg yog cov nram qab no hom biodegradable plastics:
Polycaprolactone (PCL)
Cov yas no muaj biodegradability zoo thiab nws cov ntsiab lus melting yog 62 ° C. Cov kab mob uas decompose nws yog dav faib nyob rau hauv optimistic los yog anaerobic tej yam kev mob. Raws li cov khoom siv biodegradable, nws tuaj yeem tov nrog cov hmoov txhuv nplej siab thiab cellulose, los yog polymerized nrog lactic acid.
Polybutylene succinate (PBS) thiab nws cov copolymer
Cov thev naus laus zis rau kev tsim ntau yam siab molecular hnyav polyesters raws li PBS (melting point 114 ° C) tau mus txog qib kev tsim khoom. Nyiv's Mitsubishi Chemical Corporation thiab Showa Polymer Corporation tau pib muaj kev tsim khoom, nrog rau qhov ntsuas ntawm 1,000 tons.
Lub koom haum ntawm Physics thiab Chemistry ntawm Suav Academy ntawm Sciences tseem tab tom tshawb fawb txog kev sib txuas ntawm polybutylene succinate copolyester. Lub koom haum ntawm Physics thiab Chemistry ntawm Tuam Tshoj Academy ntawm Sciences tau koom tes nrog Shandong Huiying tuam txhab los tsim ib tug ntau lawm kab nrog rau ib xyoos twg ntawm 25,000 tons ntawm PBS thiab nws cov polymers, thiab Guangdong Jinfa Tuam txhab uas muag tau tsim ib tug ntau lawm kab nrog ib tug txhua xyoo tso zis ntawm 1,000 tons. Tsinghua University tau tsim cov kab ntau lawm nrog cov khoom tsim tawm txhua xyoo ntawm 10,000 tons ntawm PBS thiab nws cov copolymers hauv Anqing Hexing Chemical Co., Ltd.
Polylactic acid (PLA)
Natureworks ntawm Tebchaws Meskas tau ua haujlwm zoo thiab ua haujlwm zoo hauv kev txhim kho cov txheej txheem ntawm polylactic acid, thiab tsim cov fermentation ntawm qabzib hauv pob kws los tsim polylactic acid, nrog rau ib xyoos twg muaj peev xwm ntawm 14,000 tons. Nyiv' lub tuam txhab UNITIKA tau tsim thiab tsim ntau yam khoom, ntawm cov canvas, tais, tableware, thiab lwm yam yog siv dav hauv Aichi World Expo hauv Nyiv.
Hauv Suav teb, Zhejiang Haisheng Biodegradable Plastics Co., Ltd. (nrog cov kab ntau lawm ntawm 5,000 txhiab tons / xyoo) yog industrialized hauv Suav teb, thiab Shanghai Tongjieliang Biomaterials Co., Ltd., Jiangsu Jiuding Group, thiab lwm yam.
Polyhydroxyalkanoate (PHA)
Lub teb chaws uas paub txog kev tsim khoom lag luam nyob txawv teb chaws feem ntau yog Tebchaws Meskas thiab Brazil. Cov chav tsim khoom hauv tsev muaj xws li Tianjin Guoyun Biomaterials Co., Ltd. (scale 10,000 tons / xyoo), Ningbo Tianan Biomaterials Co., Ltd. (scale 2,000 tons / xyoo), thiab Jiangsu Nantian Group Co., Ltd., uas tab tom pib tsav tsheb. kev sim.
Siv biodegradable plastics tau los ntawm cov khoom siv txuas ntxiv, sib xyaw aliphatic polyester thiab hmoov txhuv nplej siab ua ke, thev naus laus zis los tsim cov yas degradable kuj tau kawm tiav. Hauv cov teb chaws Europe thiab Asmeskas, cov hmoov txhuv nplej siab thiab aliphatic polyester tau siv dav los tsim cov hnab khib nyiab thiab lwm yam khoom. Lub tuam txhab loj tshaj plaws thiab muag tshaj plaws hauv ntiaj teb yog lub tuam txhab Italian Novamont, uas nws lub npe lag luam yog Mater-bi. Lub tuam txhab' cov khoom siv dav siv hauv Tebchaws Europe thiab Tebchaws Meskas.
Muaj ntau yam kev tshawb fawb thiab kev tsim khoom hauv tsev. Ntawm lawv, cov chav tsev muaj xws li Wuhan Huali Technology Co., Ltd. (nrog rau qhov ntsuas ntawm 40,000 tons / xyoo), Zhejiang Huashengtai Technology Co., Ltd. (8,000 tons / xyoo), thiab Zhejiang Tianhe Ecological Technology Co., Ltd. . (5,000 tons / xyoo), Fujian Best Biomaterials Co., Ltd. (scale 2,000 tons / xyoo), Zhaoqing Huafang Degradable Plastic Co., Ltd. (scale 5,000 tons / xyoo), thiab lwm yam.
Aliphatic aromatic copolyester
Lub aliphatic aromatic random copolyester (Ecoflex) tsim los ntawm BASF hauv lub teb chaws Yelemees muaj monomers: adipic acid, terephthalic acid, thiab 1,4-butanediol. Lub peev xwm ntau lawm yog 140,000 tons / xyoo. Tib lub sijhawm, biodegradable yas khoom raws li polyester thiab hmoov txhuv nplej siab tau tsim.
Polyvinyl cawv (PVA) biodegradable plastics
Piv txwv li, nyob rau xyoo 1990s ntawm Italian NOVMANT' s MaterBi cov khoom, PVA tau ntxiv rau cov hmoov txhuv nplej siab, uas tuaj yeem tshuab zaj duab xis thiab ua lwm yam khoom. Cov ntaub ntawv polyvinyl cawv yuav tsum tau hloov kho kom muaj biodegradability zoo. Lub koom haum ntawm Lub Teeb Kev Lag Luam Plastics Kev Ua Haujlwm thiab Daim Ntawv Thov ntawm Beijing Technology thiab Lag Luam University tau ua tiav qee qhov txiaj ntsig hauv qhov no.
Cov pa roj carbon dioxide copolymer
Txawv teb chaws, cov teb chaws ntxov tshaj plaws los kawm cov pa roj carbon dioxide copolymer feem ntau yog Nyiv thiab Tebchaws Meskas, tab sis tsis muaj kev lag luam ntau lawm. Inner Mongolia Mengxi Group Corporation txais cov thev naus laus zis ntawm Changchun Institute of Applied Chemistry thiab tau tsim ib lub cuab yeej nrog cov zis txhua xyoo ntawm 3,000 tons ntawm carbon dioxide / epoxy compound copolymer resin. Cov khoom siv tsuas yog siv hauv ntim thiab cov ntaub ntawv kho mob. Cov pa roj carbon dioxide copolymer uas tsis tshua muaj molecular-yuag thev naus laus zis tsim los ntawm Dr. Chen Liban los ntawm Guangzhou Institute of Chemistry, Suav Academy ntawm Kev Tshawb Fawb tau muab tso rau hauv Taixing, Jiangsu. Thiab lwm yam ntim. Henan Tianguan Group txais cov thev naus laus zis ntawm Xib Fwb Meng Yuezhong ntawm Sun Yat-sen University thiab tau tsim ib qho kev sim ntsuas carbon dioxide copolymer ntau lawm kab.
Lwm yam xws li chitin, polyamide, polyaspartic acid, polysaccharides, cellulose, thiab lwm yam yog nyob rau hauv txoj kev loj hlob.
Poly-β-hydroxybutyrate (PHB)
3000 tons ntawm tag nrho biodegradable yas
3000 tons ntawm tag nrho biodegradable yas
Los ntawm kev xav thoob ntiaj teb, PHB thiab PHBV tau lees paub tias yog ib qho kev cog lus zoo tshaj plaws biodegradable plastics, nrog rau cov khoom tshiab hauv kev tsim kho. Tus nqi tsim khoom ntawm tus kws tshaj lij yog kwv yees li RMB 40 / kg. Tom qab lub industrialization muab tso rau hauv ntau lawm, tus nqi ntawm cov khoom yuav raug txo ntxiv, thiab tus nqi kom zoo dua yog pom tseeb. Tshwj xeeb, cov txheej txheem kev tsim khoom yooj yim thiab cov khoom siv yooj yim yog ib qho yooj yim los txhawb thiab nqa tawm cov khoom loj.
3 daim ntawv thov
Vim nws cov degradability zoo, biodegradable plastics feem ntau yog siv los ua zaub mov mos thiab cov khoom ntim nyuaj, uas tseem yog daim ntawv thov loj tshaj plaws nyob rau theem no.
Lub hom phiaj tseem ceeb ntawm kev lag luam biodegradable plastics yog cov yas ntim cov yeeb yaj kiab, cov yeeb yaj kiab ua liaj ua teb, cov hnab yas pov tseg thiab cov khoom siv yas pov tseg. Piv nrog rau cov khoom ntim yas, tus nqi ntawm cov ntaub ntawv tshiab degradable yog me ntsis siab dua. Txawm li cas los xij, nrog kev paub txog kev tiv thaiv ib puag ncig, tib neeg txaus siab siv cov ntaub ntawv tshiab degradable nrog tus nqi siab dua los tiv thaiv ib puag ncig. Kev paub ntau ntxiv ntawm kev tiv thaiv ib puag ncig tau coj txoj hauv kev loj hlob mus rau biodegradable cov khoom lag luam tshiab. Nrog rau txoj kev loj hlob ntawm Tuam Tshoj txoj kev lag luam, kev ua tiav zoo ntawm Olympics, Ntiaj Teb Expo thiab lwm yam xwm txheej loj uas ua rau lub ntiaj teb xav tsis thoob, xav tau kev tiv thaiv ntawm ntau lub ntiaj teb cov cuab yeej cuab tam thiab lub teb chaws scenic chaw, ib puag ncig muaj kuab paug los ntawm plastics muaj. dhau los ua qhov tseem ceeb dua, thiab tsoomfwv ntawm txhua qib tau Sau cov kev kho mob dawb paug ua ib txoj haujlwm tseem ceeb.
Cov teb chaws tsim thiab thaj chaw xws li Europe, Tebchaws Asmeskas, thiab Nyij Pooj tau tsim ua tiav thiab tshaj tawm cov kev cai cuam tshuam los txwv kev siv cov yas uas tsis muaj degradable los ntawm kev ntsuas xws li kev txwv ib nrab, txwv tsis pub, yuav tsum sau, thiab sau se ua qias tuaj, thiab siv zog. tsim cov ntaub ntawv tshiab biodegradable los tiv thaiv ib puag ncig, Tiv thaiv cov av. Ntawm lawv, Fabkis tau tshaj tawm txoj cai hauv xyoo 2005 tias tag nrho cov hnab yas pov tseg uas tuaj yeem nqa tau yuav tsum tau biodegradable tom qab xyoo 2010.
Nyob rau tib lub sijhawm, Tuam Tshoj tau ua tiav ntau txoj cai los txhawb kev siv thiab kev txhawb nqa ntawm biodegradable plastics. Nyob rau hauv 2004, National People's Congress tau dhau" Rov Ntxiv Zog Txoj Cai (Draft)" thiab" Cov Khoom Siv Khib Nyiab (Kev Kho Kho)" txhawb kev siv lub zog tauj dua tshiab biomass thiab kev txhawb nqa thiab kev siv cov yas degradable; Xyoo 2005, National Development thiab Reform Commission daim ntawv No. 40 qhia meej txog kev siv thiab kev txhawb nqa ntawm biodegradable plastics; nyob rau xyoo 2006, National Development thiab Reform Commission tau tsim ib txoj haujlwm tshwj xeeb rau kev txhawb nqa kev tsim cov khoom siv biomass biodegradable; lub" txhais, Kev faib tawm, Kev Sau Npe thiab Kev Cai Degradability rau Cov Yas Degradable" tau siv rau Lub Ib Hlis 1, 2007 tau txais Kev lees paub ntawm Tebchaws Europe, Tebchaws Meskas, Nyiv thiab lwm lub tebchaws tau txhawb nqa cov khoom xa tawm los ntawm Suav tuam txhab.
4 Kev tsim kho keeb kwm
Raws li cov ntaub ntawv los ntawm Nyiv Biodegradable Plastics Research Association, zus tau tej cov biodegradable plastics nyob rau hauv Nyiv nyob rau hauv 2002 yog hais txog 10,000 tons, nyob rau hauv 2003 nws yog hais txog 20,000 tons, nyob rau hauv 2005 nws yog hais txog 40,000 tons, thiab nws yuav tsum mus txog 100,000. rau 200,000 tons hauv 2010.
Raws li European Bioplastics Association, cov duab hauv xyoo 2001 tau qhia tias kev noj cov khoom siv biodegradable hauv EU yog 25,000 txog 30,000 tons, thaum noj cov tshuaj polymers yog siab li 35 lab tons. Lub koom haum European Bioplastics tau kwv yees tias kev noj cov tshuaj polymers yuav ncav cuag 55 lab tons hauv xyoo 2010, thaum kev noj cov khoom siv biodegradable yuav ncav cuag 500,000 txog 1 lab tons los ntawm thaum ntawd. Biodegradable cov ntaub ntawv thaum kawg tuaj yeem tuav 10% ntawm kev ua lag luam. Hauv cov ntaub ntawv biodegradable, qhov feem pua ntawm cov khoom siv raw siv cov khoom siv txuas ntxiv dua tshiab yuav suav txog ntau dua 90%.
Raws li kev txheeb cais ntawm Pawg Kws Tshaj Lij Tshaj Lij Tshaj Lij Tshaj Lij Tshaj Lij ntawm Tuam Tshoj Plastics Association, kev noj cov khoom siv biodegradable hauv Suav teb xyoo 2003 yog kwv yees li 15,000 tons, ntawm 1,000 tons ntawm biodegradable polymers tsis ntxiv cov hmoov txhuv nplej siab. Xyoo 2005, muaj txog 30 lub tuam txhab koom nrog biodegradable plastics, muaj peev xwm tsim tau 60,000 tons hauv ib xyoos. Qhov tseeb ntau lawm yog kwv yees li 30,000 tons. Kev lag luam hauv tsev xav tau txog 50,000 tons, kev xa tawm txawv teb chaws yog 10,000 tons, thiab xa tawm yog 20,000 tons. Nws kwv yees tias lub peev xwm ntau lawm hauv 2010 yuav ncav cuag li 250,000 tons. Yog xav paub ntxiv, thov mus saib rau" Foresight Tuam Tshoj' s Biodegradable Plastics Kev Lag Luam Hauv Kev Tshawb Fawb Txog Kev Tshawb Fawb thiab Kev nqis peev Strategic Planning Analysis Report".
Qee lub tebchaws tsim los kuj tau coj los ntawm lub tswv yim ntawm kev lag luam ncig thiab siv cov khoom siv pov tseg biodegradable. Piv txwv li, Sweden tau sim tsim cov thawv ntim khoom noj ceev uas siv tau los ntawm cov qos yaj ywm thiab pob kws nyob rau xyoo 1980s, thiab Kaus Lim Qab Teb txoj cai txwv tsis pub siv cov tshuaj txhuam hniav ua los ntawm cov nplej glutinous. Tos. Teb chaws Europe tau tsim tus qauv EN13432 rau biodegradable composting plastics" Yuav tsum tau kuaj thiab ntsuam xyuas zaum kawg ntawm cov khoom ntim Conducive rau Composting thiab Biodegradation rau Recycling" formulated thiab npaj. Tsoomfwv Meskas tau teeb tsa Thawj Tswj Hwm Green Chemistry Challenge Award txij li xyoo 1996 los txhawb txoj kev loj hlob ntawm kev lag luam yas biodegradable. Xyoo 1989, Lub Xeev New York tau txwv tsis pub siv cov hnab ntim zaub mov uas tsis yog biodegradable, cov chaw tsim khoom lag luam uas tsim cov yas degradable, thiab xav kom cov pej xeem cais cov khib nyiab rov qab thiab tsis rov ua dua tshiab, txwv tsis pub lawv yuav raug nplua $ 500.
Qee lub tebchaws kuj tau siv cov kev ntsuas zoo sib xws: Is Nrias teb tau tsim cai txwv tsis pub siv cov ntim yas hauv kev lag luam mis nyuj; South Africa txoj cai lij choj tau txwv tsis pub siv cov hnab ntim khoom yas. Nrog rau kev txhim kho kev cai lij choj hauv ntau lub tebchaws, cov khoom ntim khoom biodegradable tshiab yuav tsum tau ua kom nrov.
Hauv Suav teb, nrog kev nkag siab tob tob ntawm cov yas degradable, lub luag haujlwm tseem ceeb ntawm cov khoom siv no thiab nws txoj kev lag luam ntawm Tuam Tshoj' txoj kev loj hlob ruaj khov tau ua tiav tiav. Kev lag luam nrov thiab kev siv cov yas biodegradable tau raug cia siab. Cov Neeg Suav' lub koom pheej ntawm Tuam Tshoj dhau lub"Txoj Cai Hloov Tshiab Zog (Draft)" thiab" Txoj Cai Lij Choj Khoom (Revised)" nyob rau hauv 2004 los txhawb kev siv lub zog tauj dua tshiab biomass thiab kev txhawb nqa thiab kev siv cov yas degradable. Nyob rau hauv National Development and Reform Commission daim ntawv No. 40 hauv xyoo 2005, nws kuj yog qhov tseeb los txhawb kev siv thiab kev txhawb nqa ntawm biodegradable plastics. Xyoo 2006, National Development and Reform Commission tau tsim ib txoj haujlwm tshwj xeeb los txhawb kev tsim cov khoom siv biomass biodegradable.
5 Kev ua lag luam xwm txheej
Los ntawm 2019, tus nqi lag luam ntawm biodegradable plastics kev lag luam yuav loj hlob mus rau US $ 3.477 billion nrog qhov nruab nrab txhua xyoo kev loj hlob ntawm 13.01%. Kev lag luam European biodegradable plastics xav tias yuav loj hlob ntawm qhov nruab nrab txhua xyoo kev loj hlob ntawm 12% los ntawm 2014 txog 2019.
Biodegradable plastics usher nyob rau lub sijhawm ntawm kev loj hlob sai. Txawm hais tias lub tswv yim ntawm biodegradable plastics tau hyped ua ntej, daim ntawv thov tsis muaj peev xwm ua kom lub ntim.
Biodegradable plastics yog siv rau hauv ntim, fiber ntau, kev ua liaj ua teb, kev txhaj tshuaj molding thiab lwm yam. Ntawm lawv, nws yog qhov siv dav tshaj plaws hauv kev lag luam ntim khoom. Hauv xyoo 2013, nws suav txog li 60% ntawm tag nrho cov lag luam. Qhov kev thov rau ntim khoom noj muaj ntau dua 70% ntawm biodegradable yas ntim khoom lag luam. ; Kev txhaj tshuaj molding daim ntawv thov kev lag luam yog lub ntsiab tsav tsheb rau kev loj hlob ntawm kev thov rau biodegradable plastics.
Raws li qhov kawg ntawm 2013, Tebchaws Europe thiab Tebchaws Meskas yog lub khw tseem ceeb rau biodegradable plastics. Raws li kev txheeb cais, xyoo 2013 European thiab North American kev lag luam suav txog 54% thiab 28% ntawm lub ntiaj teb biodegradable plastics feem.
Pawg Environmental Committee ntawm European Parliament tau tshaj tawm tsab cai lij choj hais txog kev txo qis kev siv cov hnab yas siv ib zaug. Tsab ntawv tshaj tawm tau hais tias 28 EU cov tswvcuab yuav tsum ua raws li ob kauj ruam kom txo qis kev siv cov hnab yas kom ua tiav lub hom phiaj ntawm kev txo qis kev siv cov hnab yas ultra-nyias los ntawm 80% hauv 2019 piv rau 2010. Kev daws teeb meem yuav tsum ua kom muaj txiaj ntsig zoo rau kev lag luam xav tau rau biodegradable plastics, thiab xav tias yuav tsim kom muaj txoj hauv kev loj hlob zoo rau cov tuam txhab cuam tshuam hauv tsib xyoos tom ntej.
6 cov teeb meem ntsig txog
Txawm li cas los xij, txawm hais tias muaj ntau cov kev tshawb fawb thiab cov lus ceeb toom ntawm cov yas degradable, ntau cov teeb meem tshwj xeeb tsis tuaj yeem daws tau, kev nce qib yog qhov nyuaj heev, thiab qhov kev cia siab tsis zoo. Cov laj thawj yog: ua ntej, vim tias lub hnab yas degradable muaj lub peev xwm thauj khoom tsawg, nws tsis tuaj yeem ua tau raws li cov neeg siv khoom xav tau rau ntau cov khoom thiab rov siv dua; thib ob, lub hnab yas degradable yog dim thiab daj xim thiab tsis tshua muaj pob tshab, muab cov neeg xav tias tsis huv txaus thiab tsis pom kev, tsis txhob txhawj txog kev siv; Thib peb, tus nqi siab dhau lawm, vim tias tus tub lag luam muab nws tawm dawb, yog li tus nqi tsis tuaj yeem lees txais.
Lwm qhov piv txwv yog los daws qhov teeb meem ntawm ib puag ncig cov pa phem ntawm EPS cov khoom noj khoom haus ceev ceev. Sim siv cov thawv ntawv noj su lossis biodegradable yas noj su thawv hloov. Txawm li cas los xij, nws nyuaj heev rau kev txhawb nqa vim yog vim li cas hauv qab no: Ua ntej, EPS
Peb muab patented tag nrho biodegradable zaj duab xis thiab PVA hnab, tag nrho cov khoom yog tsim los ntawm cov cuab yeej casting, Nws yog txawv los ntawm cov tsoos tshuab molding khoom, tag nrho cov tshuab molding khoom yog tsis tag nrho biodegradable. Peb tuaj yeem tsim pva zaj duab xis thiab lub hnab ntim puv pob tshab thiab ntau xim. thiab PVA zaj duab xis yog du dua li cov tsoos tshuab molding khoom.
Peb kuj muab cov khoom siv organic tag nrho biodegradable zaj duab xis thiab hnab nrog patented raw khoom thiab txheej txheem ntau lawm.
Yog xav paub ntxiv PVA zaj duab xis thiab hnab khoom thov mus saib peb: