M'mbuyomu, chinthu chopangidwa ndi perfluorinated PFAS chomwe chimakutidwa mkati mwazonyamula zakudya chimakhala ndi carcinogenicity, kotero opanga mapepala opangira chakudya mwachangu asintha ndikukutira pamwamba pa pepala ndi wosanjikiza wa mapulasitiki a resin monga PE, PP. , EVA, sarin, ndi zina zotero. Kanemayo akhoza kukwaniritsa cholinga cha madzi ndi mafuta, ndikupewa kuvulaza kwa mankhwala opangidwa ndi perfluorinated PFAS ku thanzi laumunthu. Komabe, m'malo achilengedwe, monga PFAS, mawonekedwe amitundu yamakanema apulasitikiwa ndi okhazikika ndipo sangawonongeke, motero amapanga kuyipitsa kwa pulasitiki yoyera.#PE yokutidwa ndi kapu ya pepala

Chifukwa chake, makampani aku China apanga ndi kupanga ukadaulo wa photo-oxygen biodegradation wa zinthu za polima (monga mapulasitiki, mphira, ndi ulusi wamankhwala), zomwe zimatha kuwononga biodegradation ndi kuwonongeka kwa kompositi.

Photo-oxygen biodegradable masterbatch ndiye ukadaulo wapafupi kwambiri wowononga zachilengedwe ndikuwonongeka mwachangu m'chilengedwe. Kuphatikizika kwa 1% kumatha kuwonongeka mwachangu popanda kusintha zinthu, zida zopangira, kupanga komanso magwiridwe antchito onse.

Komabe, mtengo wa chikhalidwe polylactic asidi PLA, PBAT, PBS, PHA ndi zina zonse biodegradable matekinoloje amawonjezeka ndi osachepera 100% mpaka 200%, ndi ntchito mabuku sangathe kufika ntchito mapulasitiki chikhalidwe, choncho zipangizo, zipangizo kupanga ndi njira kupanga. ziyenera kusinthidwa.

Ukadaulo wowonjezera mpweya wa okosijeni wamakanema apulasitiki monga PE ndi sarin atha kugwiritsidwa ntchito popanga mapepala opaka chakudya mwachangu pamsika waku China.# Pepala lopangidwa ndi PE

Mfundo yaukadaulo yaukadaulo wa photo-oxygen biodegradation

Ukadaulo waukadaulo wamakampani aku China opanga mafilimu apulasitiki otulutsa biodegradation ndi mtundu waukadaulo wotsogola womwe umawonongeka kwathunthu kutengera filimu yapulasitiki yotayidwa m'chilengedwe. Tekinolojeyi idapangidwa kuti ikhalebe ndi moyo wothandiza ngati chinthu komanso makina ake, makina, zotchinga, zowonekera ndi zina zamalonda munthawi yake yonse ya moyo wake, ndipo zimalola mafilimu apulasitiki kuti awonongeke pansi pamikhalidwe yachilengedwe atatayidwa.

Ukadaulo ndikuwonjezera photo-oxygen biodegradable masterbatch mufilimu yapulasitiki kuti ikhale ngati filimu ya olefin ya pulasitiki yowonongeka ndi okosijeni. Sinthani liwiro lomwe maatomu okosijeni amalowetsedwa mu unyolo wa polima wa ma polima apulasitiki. Ma polima apulasitiki amathyoledwa kukhala tinthu tating'onoting'ono tokhala m'malo a aerobic, kenako amawola ndi tizilombo tomwe timapezeka paliponse m'chilengedwe.# PE yokutidwa ndi pepala pansi

Njira yowonongeka ya mafilimu apulasitiki pogwiritsa ntchito teknoloji ya photo-oxygen biodegradation ikhoza kugawidwa m'magawo awiri.
Gawo loyamba: Kanema wa pulasitiki wowonjezeredwa ndi photo-oxygen biodegradable masterbatch imakumana ndi mpweya mumlengalenga, zomwe zimapangitsa kuti chowonjezeracho chiwononge mpweya wa polima, ndipo msana wa kaboni umapangidwa ndi okosijeni kuti upange tizidutswa tating'onoting'ono tating'onoting'ono tomwe timakhala ndi mamolekyulu amphamvu. zosakwana 10,000 kapena zocheperapo ( Asayansi ku Europe ndi Japan amakhulupirira kuti oligomers okhala ndi molekyulu yochepera 400,000 akhoza kukhala kumezedwa ndi tizilombo).

Panthawi imeneyi, kuwonongeka ndi njira ya abiotic, yomwe imalimbikitsa kuyika kwa maatomu a okosijeni mu carbon backbone pomwe polima imasweka kupanga magulu osiyanasiyana ogwira ntchito (monga carboxylic acid, esters, aldehydes, ndi alcohols).

The mkulu maselo polima kusintha kwa hydrophobic macromolecule unyolo kuti hydrophilic yaing'ono maselo unyolo, amene amapangitsa zidutswa za unyolo maselo mosavuta kukokoloka ndi digested ndi mabakiteriya.# Wokupiza makapu opangira mapepala

Gawo lachiwiri: tizilombo tating'onoting'ono tating'onoting'ono (mabakiteriya, bowa ndi algae) m'chilengedwe amawola filimu ya pulasitiki ngati gwero lazopatsa thanzi, ndipo pamapeto pake amawola kukhala carbon dioxide, madzi ndi biomass. Kuwonongeka kwapanthawiyi kumatchedwa biodegradation process.

Mayeso ndi Miyezo

Kaya panja kapena mu labotale, kuwonongeka kwa ukadaulo uwu kumatha kufika kupitilira 60%. M'dziko langa ladziko lonse lapansi GB/T 20197-2006 ndi GB/T 19277.1-2011, zofunika kwambiri kuyezetsa mlingo biodegradation ndi 60%.

M'malo a labotale, pamakanema okhala ndi makulidwe osakwana 15 μm, amatha kulowa mugawo la biodegradation atatha kuyerekeza miyezi itatu yakukalamba kwachilengedwe. Kukalamba koyerekeza kumatha kusankha kukalamba kwa UV kapena kukalamba kwa nyali ya xenon.

Polowa mu gawo la biodegradation, mulingo wapamwamba kwambiri wakuwonongeka kwa polyolefin padziko lonse lapansi (PAS 9017: 2020) umafunikira chiwopsezo chopitilira 90% mkati mwa masiku 730, omwe ndi apamwamba kwambiri kuposa mulingo wadziko lonse m'dziko langa.

Mulingo waukadaulo waukadaulo waukadaulo wa Photo-oxidative biodegradation wa filimu yapulasitiki umaposa mulingo wadziko lonse, womwe ukugwirizana ndi mulingo wapamwamba kwambiri wowonongeka wa polyolefin padziko lonse lapansi (PAS 9017: 2020).

Pambuyo pophatikiza ma photo-oxygen biodegradable masterbatch mu ma resin apulasitiki monga PE ndi sarin, zinthu zomwe zimapangidwa zimakhala ndi zinthu zomwe zimatha kuwonongeka, ndipo kuchuluka kwa masiku 180 kwa biodegradation kumatha kufika 60%, kukwaniritsa mulingo wapadziko lonse wa GB/T 38082- 2019 wofunikira pakuwonongeka kwachilengedwe. Itha kusinthidwa kukhala biodegraded pansi pamikhalidwe ya kutaya mpweya, kutayirapo kapena kompositi ya aerobic.# Pepala lokutidwa ndi PE

Ukadaulo wa Photo-oxygen biodegradation ukhoza kuyesa miyeso ya dziko la China: GB/T 20197-2006, GB/T 19277.1-2011, GB/T 38082-2019. Mogwirizana ndi ndondomeko yamakono yapawiri ya carbon ndi filosofi.

Kusankha Njira Zamakono Zamakono a Biodegradation Zopaka Zosiyana

Kupaka kwa EVA ndi zokutira za PP ndizoyenera kwambiri kuukadaulo wamakampani aku China (anaerobic + marine) wa biodegradation, zachidziwikire, ukadaulo waku China wamakampani opanga ma photo-oxygen biodegradation angagwiritsidwenso ntchito.

Sarin resin, LLDPE, LDPE ndi zokutira zina ndizoyenera kwambiri paukadaulo wamakampani aku China opanga ma photo-oxygen biodegradation. Inde, ndizothekanso kuchepetsa kutentha kwa sungunula mpaka pansi pa 310 ° C kuti zithandize kukhazikitsidwa kwa (anaerobic + marine) teknoloji yowonongeka.#Nanning Dihui Paper Products Co., Ltd.