Cov khoom ntim tsis zoo, koj puas paub ntau npaum li cas?
Cov khoom tawg yooj yim yog cov khoom siv uas tuaj yeem ua rau muaj qhov tsis zoo nyob rau hauv kev nkag siab ntawm thermodynamics thiab kinetics nyob rau lub sijhawm. Raws li lwm yam sab nraud ntawm kev ua kom tsis zoo, nws tuaj yeem faib ua: cov ntaub ntawv photodegradable, cov ntaub ntawv biodegradable, thiab lwm yam.
Kev faib tawm
1. Cov khoom siv thaij duab: tshem tawm vim lub hnub;
2. Cov khoom siv biodegradable: vim kev ua pa lossis lub zog siv hluav taws xob ua kom muaj zog ntawm cov kab mob me me xws li cov kab mob hu ua fungi thiab cov kab mob, lawv cov khoom pov tseg thiab thaum kawg decomposed rau hauv carbon dioxide thiab dej;
3. Cov khoom ua rau ib puag ncig: muaj kev puas tsuaj hauv ib puag ncig ntuj ib puag ncig xws li lub teeb, cua sov, dej, kuab paug paug, kab mob me me, kab, thiab lub zog ua haujlwm.
Piv Txwv
Actic Cov kab mob kua qaub
Polylactic acid (PLA), tseem hu ua polylactide, yog tshuaj sib kis tau siv cov lactic acid, cov khoom lag luam ntawm microbial fermentation, raws li monomer. Nws tuaj yeem txiav txim siab tom qab siv tas thiab yuav tsis ua rau ib puag ncig.
Polylactic acid tuaj yeem ua tiav rau hauv cov fibers thiab zaj duab xis nrog cov cuab yeej zoo tshaj plaws, thiab nws lub zog yog ntxig sib luag nrog cov nylon fibers thiab polyester fibers. Polylactic acid tuaj yeem raug hydrolyzed rau hauv lactic acid thiab acetic acid hauv lub cev, thiab metabolized rau hauv CO2 thiab H2O los ntawm cov enzymes, yog li nws tuaj yeem siv ua cov khoom siv kho mob. Nyiv thiab Asmeskas tau siv cov polylactic acid plastics los ua cov txheej txheem phais pob txha, pob txha cuav, thiab cov tawv nqaij cuav. Polylactic acid kuj tseem siv rau hauv kev tsim cov ntim khoom ntim, kev cog qoob loo ua liaj ua teb, fiber ntau kis las ntaus kis las thiab txaj pw.
Arch Cov hmoov nplej yas
Cov hmoov txhuv nplej siab cov ntsiab lus ntau dua 90%, thiab lwm cov khoom sib ntxiv ntxiv tau kuj tuaj yeem ua tiav. Tam sim no, Sumitomo Corporation ntawm Nyij Pooj, Lub Tuam Txhab Wamer-Lamber ntawm Tebchaws Meskas, tuam txhab Ferrizz ntawm Ltalis, thiab lwm yam tau lees tias lawv tau kawm tiav cov hmoov txhuv nplej siab ntawm 90% txog 100%. Cov hmoov txhuv xim pluaj yog biodegradable tag nrho nyob rau (Lub Ib Hlis Ntuj txog 1 xyoos) tsis tas yuav tsis muaj qhov cim tseg, tsis muaj kuab paug, thiab tuaj yeem siv los ua ntau yam ntim, raj mis, zaj duab xis, hnab khib nyiab, thiab lwm yam.
Lub hauv paus ntsiab lus ntawm txhua cov hmoov txhuv nplej siab yog deform thiab tsis meej cov hmoov txhuv nplej siab molecules los ua cov hmoov txhuv nplej ua kua nrog cov khoom muaj cov thermoplastic, yog li lawv tseem hu ua thermoplastic hmoov txhuv nplej siab plastics. Cov txheej txheem moulding tuaj yeem ua raws li cov khoom siv yas ua qub. Qhov zoo muaj peev xwm ntawm kev siv cov hmoov txhuv nplej siab ua cov khoom siv raw kom tsim tau biodegradable plastics yog: hmoov txhuv nplej siab tau ua tiav biodegradability hauv ntau qhov chaw; tom qab cov hmoov txhuv nplej siab hauv cov yas yuav puas tsuaj los yog ashed, cov roj carbon dioxide roj yog tsim, uas tsis muaj kev phom sij rau cov av lossis huab cua; Cov cuab yeej tsim nyog tuaj yeem ua rau cov hmoov txhuv nplej mus txog cov cuab yeej siv tau los ua cov khoom yas tom qab cov thermoplasticization; cov hmoov txhuv nplej siab yog qhov peev txheej txuas ntxiv, uas yog qhov uas tsis yooj yim, thiab kev siv cov hmoov txhuv nplej siab tau txais txiaj ntsig zoo rau kev txhim kho ntawm kev lag luam nyob deb nroog.
Nws yuav tsum raug sau tseg tias feem ntau ntawm cov hmoov txhuv nplej siab uas tam sim no tsim nyob rau hauv kuv lub teb chaws yog cov hmoov txhuv nplej siab, uas yog, ntxiv ib feem ntawm cov hmoov txhuv nplej siab rau cov khoom siv tsis yog biodegradable polymer, uas ua rau lub cev lub zog ntawm tag nrho cov khoom mus vau los ntawm biodegradation ntawm cov hmoov txhuv nplej siab, uas txhawb nqa coob tus ntawm cov pab pawg kawg tau raug oxidative degradation, tab sis PE thiab PVC hauv qhov seem tom qab no" sib tsoo" tsis tuaj yeem ua qias tuaj thiab nyob hauv av. Kev txuam nrog lub sijhawm yuav yeej ua rau muaj kuab paug, yog li txawv teb chaws txawv txheeb xyuas cov khoom lag luam zoo li yam uas tshem tawm.
Ode Photodegradable yas
Raws li cov txheej txheem tsim khoom, photodegradable plastics tuaj yeem muab faib ua hluavtaws degradable plastics thiab additive degradable plastics.
(1) Khoom cua degradable uas
a. Luam yeeb tshuab Ethylene / carbon monoxide copolymer (E / CO)
Photodegradation yog tus cwj pwm los ntawm cov saw hlau loj. Lub photodegradation nrawm thiab qib E / CO yog hais txog tus nqi ntawm ketone pawg uas muaj nyob hauv cov saw hlau. Cov ntsiab lus siab dua, qhov nrawm nrawm nrawm nrawm thiab muaj ntau dua ua tiav. Cov kws tshawb fawb hauv Texas, Asmeskas tau sim tshuaj xyuas sab nraum zoov ntawm E / CO. Lub Rau Hli thaum lub hnub ci puv, E / CO tuaj yeem txo nyob hauv ob peb hnub ntawm hnub pib.
b. Vinyl / vinyl ketone copolymer (Ecolyte)
Lub ketone pab pawg nyob rau sab saw ntawm Ecolyte molecule tuaj yeem decomposed nyob rau hauv qhov kev ua ntawm lub teeb ntuj. Ecolyte' s kev ntsuas kev yees duab zoo dua li E / CO, tab sis tus nqi kuj tseem siab dua. Qhov tsis zoo ntawm hom polymer no yog tias nws pib thuam ib zaug raug rau lub teeb, thiab yuav luag tsis muaj lub sij hawm pib siv. Cov tshuaj tiv thaiv kab mob yuav tsum tau ntxiv los kho lub sijhawm induction.
(2) Cov yas txuas ntxiv photodegradable yas
Additive hom photodegradable plastics yog tsim los ntawm kev ntxiv me me ntawm photosensitizer rau lub polymer. Thaum tsis tshua muaj ntau, nws yog photooxidation degradation catalyst, uas reacts thaum irradiated los ntawm tshav ntuj (lub teeb ci ultraviolet) txhawm rau polyolefin polymer. Ntxiv cov ketones, amines thiab lwm tus neeg coj mus rau PE, PP thiab lwm cov polymers tuaj yeem ua tiav photodegradability zoo dua. Cov yas txuas ntxiv photodegradable yas muaj cov nqi qis, cov txheej txheem tsim khoom yooj yim, thiab cov txiaj ntsig zoo thaum siv los ua cov zaj duab xis npog. Txawm li cas los xij, nws cov yam ntxwv degradation yog tias lub nplaim tawg yog qhov cuam tshuam tag nrho, thiab feem faus rau hauv av yog qhov tsis zoo. Qhov kev cuam tshuam tsis zoo induction lub sijhawm ntawm xws li photodegradable plastics tuaj yeem tswj tau ntau dua ob hlis. Tab sis lub controllability ntawm degradation lub sij hawm tsis zoo.
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 lub hnab nrog daim ntawv patented raw khoom thiab cov txheej txheem ntau lawm.
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/