Dab tsi yog qhov txawv ntawm ib lub hnab ntim khoom degradable thiab lub hnab ntim khoom degradable tag nrho
Lub hnab ntim khoom degradable txhais tau hais tias lawv tuaj yeem degraded, tab sis degradable lub hnab ntim tau muab faib ua ob hom:" degradable" thiab" tag nrho degradable". Lub hnab ntim khoom degradable yog hais txog kev ntxiv qee yam ntawm cov khoom ntxiv (xws li cov hmoov txhuv nplej siab, hloov cov hmoov txhuv nplej siab lossis lwm yam cellulose, photosensitizers, biodegradants, thiab lwm yam) thaum lub sij hawm tsim cov txheej txheem los txo nws cov stability, thiab tom qab ntawd nws yooj yim dua nyob rau hauv tej yam ntuj tso degradable. yas ntim hnab. Lub hnab ntim ntim tau yooj yim txhais tau hais tias lub hnab ntim cov hnab yas yog degraded tag nrho rau hauv dej thiab carbon dioxide. Lub hauv paus tseem ceeb ntawm cov khoom siv degradable no yog ua tiav los ntawm pob kws thiab cassava rau hauv lactic acid, uas yog PLA.
Polylactic acid (PLA) yog ib hom tshiab ntawm cov khoom siv roj ntsha thiab cov khoom siv rov ua dua tshiab biodegradable. Starch raw cov ntaub ntawv yog saccharified kom tau cov piam thaj, uas yog ces fermented los ntawm qabzib thiab ib co hom los tsim high-purity lactic acid, uas yog ces synthesized los ntawm tshuaj synthesis txoj kev. Molecular hnyav ntawm polylactic acid. Nws muaj biodegradability zoo. Tom qab siv, nws tuaj yeem degraded tag nrho los ntawm cov kab mob hauv cov kab mob hauv cov xwm txheej tshwj xeeb, thiab thaum kawg carbon dioxide thiab dej raug tsim tawm yam tsis muaj kuab paug ib puag ncig. Qhov no muaj txiaj ntsig zoo rau kev tiv thaiv ib puag ncig thiab yog ib puag ncig zoo rau cov neeg ua haujlwm.
Tam sim no, cov khoom siv bio-raws li tseem ceeb ntawm lub hnab ntim khoom degradable yog tsim los ntawm PLA+PBAT, uas tuaj yeem decomposed tag nrho rau hauv dej thiab carbon dioxide nyob rau hauv 3-6 lub hlis nyob rau hauv cov xwm txheej ntawm composting (60-70 degrees), uas tsis ua phem rau ib puag ncig. Vim li cas thiaj ntxiv PBAT? Cov chaw tsim khoom lag luam hloov pauv hloov pauv tau qhia qhov kev txhais ntawm no tias PBAT yog copolymer ntawm adipic acid, 1,4-butanediol, thiab terephthalic acid. Nws yog chemically synthesized rog uas yuav ua tau ntau dhau biodegradable. Pab pawg-aromatic polymer, PBAT muaj qhov ua tau zoo heev thiab tuaj yeem siv rau cov yeeb yaj kiab extrusion, tshuab ua, txheej txheej extrusion thiab lwm yam molding. Lub hom phiaj ntawm kev sib xyaw PLA thiab PBAT yog txhawm rau txhim kho PLA' s toughness, biodegradation thiab molding ua cov khoom. PLA thiab PBAT yog qhov tsis sib xws, yog li xaiv tus neeg sib tw tsim nyog tuaj yeem txhim kho kev ua tau zoo ntawm PLA.
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:
http://www.joyful-printing.net/pva-bag/
http://www.joyful-printing.com/pva-bag/