Xya ntsuab biodegradable uas
Cov pa roj hmab plooj (veneers) yog nquag ua paug dawb. Nyob rau hauv ib txwm muaj tshwm sim, kev faib ua qias yog qeeb heev. Qee tus neeg hais tias muaj ntau plastics nyob rau hauv dej hiav txwv dua li ntses, uas tej zaum yuav yog tus ua kom ceeb ntshai, tab sis peb yuav tsum xyuam xim rau nws. Raws li tib neeg kev paub txog ib puag ncig ib puag ncig txuas ntxiv nce mus, degradable plastics yog maj mam hloov mus rau tib neeg lub qab ntuj.
Peb cov neeg Suav tau mob siab rau lub caij nplooj zeeg nplooj. Cov tib neeg uas ua cov plastics kuj cia siab tias lawv tuaj yeem "poob rov qab rau cov hauv paus hniav". Tom qab ua tiav lawv lub hom phiaj, lawv yuav rov qab mus rau hauv xwm thiab ua ib qho nrog rau xwm. Yog li, degradable plastics tuaj mus rau hauv qab. Niaj hnub no, peb yuav hais txog xya qhov feem ntau sawv cev biodegradable plastics.
Ua ntej, polylactic acid PLA
Polylactic acid (PLA) yog hom tshiab ntawm cov khoom siv biodegradable uas ua los ntawm cov hmoov txhuv nplej siab ua los ntawm cov khoom siv cog qoob loo tshiab xws li pob kws. Nws muaj biodegradability zoo, tuaj yeem ua kom puas tsuaj los ntawm cov kab mob me me nyob rau hauv cov xwm tom qab siv, thiab thaum kawg tsim cov pa roj carbon dioxide thiab dej, uas tsis ua paug rau ib puag ncig. Qhov no yog qhov txiaj ntsig zoo rau ib puag ncig thiab tau lees paub tias yog cov khoom siv hauv ib puag ncig. Nws to taub tias PLA suav rau 45.1% ntawm biodegradable plastics thiab yog qhov tsim nyog tau zoo-lub zog tseem ceeb.
Qhov kev xeb ntawm polylactic acid tau muab faib ua ob ntu: 1) ua ntej, hydrolysis rau lub lactic acid monomer; 2) lactic acid monomer yog degraded rau hauv carbon dioxide thiab dej los ntawm kev ua ntawm cov kab mob me me. Cov zaub mov khob ua ntawm polylactic acid tuaj yeem ua kom tag nyob rau hauv 60 hnub xwb, ua tiav cov txiaj ntsig zoo rau ecological thiab nyiaj txiag tsis zoo.
PLA tsuas yog siv rau kev ntim zaub mov thiab 3D luam tawm uas txhua tus neeg txhawj xeeb txog. Lub chaw muag khoom loj tshaj plaws ntawm PLA yog American NatureWorks, tom qab ntawd Tuam Tshoj yog Hisun.
Thib ob, poly 3-hydroxyalkanoate PHA
PHA yog tus qauv sib txawv ntawm aliphatic copolyester synthesized los ntawm cov kab mob me me fermented los ntawm ntau cov pa roj carbon ntau. Qhov feem ntau ntawm cov no yog poly-3-hydroxybutyrate (PHB), polyhydroxyvalerate (PHV) thiab tus kws theej tshuaj ntawm PHB thiab PHV (PHBV).
Lub hom phiaj tseem ceeb yog: cov khoom siv tais diav, cov ntaub qhwv tsis-ntaub, cov khoom ntim, cov zaj duab xis ua liaj ua teb, khoom ua si, txheej txheej, kua nplaum, fiber ntau thiab lwm yam khoom muag.
Cov tuam txhab PHA suav nrog Tianjin Guoyun Biomaterial Co., Ltd., Wuhan Gorgeous Technology Co., Ltd., Zhejiang Huasheng Technology Co., Ltd., Zhejiang Tianhe Ecological Technology Co., Ltd., Fujian Baishida Biomaterial Co., Ltd. Zhaoqing Huafang Degradable Yas Co., Ltd. Tos.
Thib peb, poly-ε-caprolactone PCL
Poly-ε-caprolactone (PCL) yog qhov ua kom tsis muaj cov polymer uas tau txais los ntawm lub nplhaib qhib polymerization ntawm ε-caprolactone, uas muaj cov ntsiab lus tsis sib xws tsuas yog 62 ° C. Qhov kev kawm tsis zoo ntawm PCL tau pib txij li xyoo 1976, thiab hauv qhov chaw anaerobic thiab aerobic, PCL tuaj yeem ua tiav los ntawm cov kab mob me me.
Piv nrog PLA, PCL muaj hydrophobicity zoo dua, tab sis tus nqi hloov kho qis dua qeeb; tib lub sijhawm, nws cov txheej txheem sib txuas yog yooj yim thiab tus nqi qis. PCL muaj cov khoom ua zoo heev thiab tuaj yeem ua rau zaj duab xis thiab lwm yam khoom los ntawm cov khoom siv ua yas zoo tib yam.
Thib plaub, polyester - PBS / PBSA
PBS nrog aliphatic succinic acid thiab butanediol ua cov khoom nyoos tseem ceeb tuaj yeem ua tau raws li qhov kev xav tau los ntawm cov khoom lag luam petrochemical, thiab tseem tuaj yeem tsim cov khoom noj los ntawm bio-fermentation los ntawm ntuj hloov cov qoob loo cov khoom qoob loo xws li cov hmoov txhuv nplej siab, cellulose thiab piam thaj. Kev tsim kev ntsuab ntsuab los ntawm xwm thiab rov qab mus rau xwm. Ntxiv mus, cov ntaub ntawv raw khoom tsim los ntawm cov txheej txheem xyoob ntoo tuaj yeem txo tus nqi ntawm cov khoom nyoos, yog li txo nqi PBS.
Piv nrog rau cov khoom lag luam zoo sib xws, qhov zoo ntawm polyester bio-nco plastics:
1) Zoo kub ua hauj. Qhov no nws kom nws tau nce qib hauv kev ua noj ua haus ua noj ua haus;
2) Kev ua cov txheej txheem tsis siab;
3) Yooj yim cia thiab tiv taus cov hydrolysis.
Polybutylene succinate (PBS) yog qhov muaj txiaj ntsig zoo heev thiab tuaj yeem siv rau hauv cov ntim khoom, cov tais diav, cov fwj tshuaj pleev ib ce thiab cov fwj tshuaj, cov khoom siv kho mob pov tseg, cov yeeb yaj kiab ua liaj ua teb, tshuaj tua kab thiab tshuaj chiv, thiab biomedical polymers.
Tsib, aliphatic uas muaj ntxhiab copolyester
Aliphatic aromatic random copolyester (Ecoflex) tsim los ntawm BASF, Lub teb chaws Yelemees, uas lawv cov monomers yog: adipic acid, terephthalic acid, thiab 1,4-butanediol. Tam sim no muaj peev xwm ntau yog 140,000 tons / xyoo. Nyob rau tib lub sijhawm, cov khoom lag luam yas biodegradable raws li polyester thiab hmoov txhuv nplej siab tau tsim.
Thib rau, dej cawv polyvinyl (PVA)
Dej-soluble PVA zaj duab xis yog hom tshiab ntawm cov khoom lag luam yas tau tshwm sim thoob ntiaj teb. Nws siv PVA cov yeeb yaj kiab-ua cov yam ntxwv, dej thiab txheeb raws roj ntsha yam ntxwv, thiab tuaj yeem xeb tag nrho mus rau hauv CO2 thiab H2O. Nws yog cov khoom noj tau ntxim siab ntsuab high-tech ib puag ncig cov khoom ntim.
Hauv Tebchaws Europe, Amelikas thiab Nyij Pooj, dej-soluble PVA zaj duab xis tau siv dav hauv kev ntim ntawm ntau yam khoom. Kev txhim kho ntawm dej-soluble PVA zaj duab xis hauv Suav teb tseem nyob hauv nws thaum tseem yau, thiab kev lag luam R&D tsuas yog pib rau tsib xyoos dhau los. Nws yog tsuas yog siv hauv ob daim teb ntawm paj ntaub thiab hloov xa dej (xim luam ntawv ntawm iav, ceramics, ntim hluav taws xob, thiab lwm yam). Kev siv txhua xyoo ntawm PVA hauv qhov kev hwm no yog kwv yees li 10,000 tons.
Xya, carbon dioxide copolymer
Ib hom tshiab ntawm cov khoom siv hluavtaws hauv kev kawm, uas siv cov pa roj carbon dioxide ua cov monomer raw cov khoom siv los ua kom lub siab dua hauv kev ua haujlwm ntawm bimetallic kev sib koom tes PBM hom catalyst, thiab copolymerizes nrog epoxide los tsim aliphatic polycarbonate (PPC), tom qab kev kho mob tom qab, cov khoom siv roj carbon dioxide ua kom tau txais.
Hauv cov teb chaws txawv teb chaws, thawj lub teb chaws kawm txog carbon dioxide copolymer feem ntau yog Nyij Pooj thiab Asmeskas, tab sis tseem tsis muaj chaw tsim khoom lag luam. Kev Lag Luam Hauv Tebchaws Tshaj Lij Tshaj Tawm Mengxi Pab Pawg Chaw Lag Luam tau saws cov thev naus laus zis ntawm Changchun Lub Koom Haum ntawm Kev Siv Tshuaj, thiab tau tsim ib lub cuab yeej nrog kev tsim tawm txhua xyoo 3,000 tons ntawm carbon dioxide / epoxy compound copolymer cob. Cov khoom siv yog siv dav hauv kev ntim khoom thiab cov ntawv kho mob.
Ntxiv rau, chitin, polyamide, polyaspartic acid, polysaccharides, thiab cellulose yog tag nrho nyob hauv txoj kev loj hlob.
Peb muab patented puv biodegradable zaj duab xis thiab lub hnab PVA, tag nrho cov khoom yog tsim los ntawm cov cuab yeej siv casting, Nws txawv ntawm cov tshuab moulding khoom, tag nrho cov tshuab moulding khoom tsis puv biodegradable. Peb tuaj yeem tsim pva zaj duab xis thiab hnab hauv pob tshab thiab pob tshab xim. thiab PVA zaj duab xis yog du ntau dua li cov tsoos tshuab moulding khoom.
Peb kuj muab cov khoom siv organic puv ntim biodegradable zaj duab xis thiab hnab nrog cov khoom muaj ntawv pov thawj muaj txheej txheem thiab cov txheej txheem.
Xav paub ntau ntxiv PVA zaj duab xis thiab hnab khoom thov mus saib peb:
http://www.joyful-printing.net/pva-bag/
http://www.joyful-printing.com/pva-bag/