He ʻeke plastik degradable?

He ʻeke plastik degradable?

I Ianuali o ka makahiki i hala aku nei, ua kapa ʻia nā manaʻo e pili ana i ka hoʻoikaika ʻana i ka hoʻohaumia ʻana i ka lepo i hoʻopuka ʻia e ka National Development and Reform Commission a me ka Ministry of Ecology and Environment i kapa ʻia ʻo "ka palena palena plastic ikaika loa i ka mōʻaukala". Ua hoʻokō ʻo Beijing, Shanghai, Hainan a me nā wahi ʻē aʻe i ka hoʻokō ʻana i ke kauoha palena plastic. ʻO Chengdu version o "The Strongest Plastic Restriction Order in History"-"Chengdu Action Plan for Strengthening Plastic Pollution Control" e komo pū i ke ola o kēlā me kēia me 2021.
"Akā ʻoi aku ka liʻiliʻi o ka maʻamau, manaʻo ʻia he haunaele, a ʻaʻohe manaʻo." ʻO ka maʻamau i ʻōlelo ʻia e Mr Yang, e hana nei i ka hana ʻana i nā huahana plastik, e pili ana i ke kūlana o nā ʻeke plastik degradable. Ma waho aʻe o Mr. Yang, nui nā kamaʻāina e huikau e pili ana i ke kūlana o ka "plastic limit order". "Ke kākoʻo nui nei au i ka palena plastic, akā ʻaʻole maopopo iaʻu kahi ʻeke plastik degradable."
He aha ke ʻano o ka ʻeke plastik degradable, a pono ke kaha ʻia ka maʻamau? Ua nīnau ka mea kākau moʻolelo e pili ana i nā kūlana kūpono a nīnauele i nā keʻena hoʻokolohua.
Pahemo ʻo Shanghai
He ʻokoʻa nā kūlana o nā ʻeke plastik degradable, a he ʻokoʻa ka lima o nā mea
Ua kipa ka mea kākau moʻolelo i ka pūnaewele a ʻike ʻo ia ʻaʻole kūlike nā kūlana o nā ʻeke plastik degradable i hoʻohana ʻia e nā supermarket offline.
Hōʻailona ʻia ka ʻeke kūʻai plastik biodegradable i hoʻohana ʻia ma familymart e GB/T38082-2019. Wahi a ka mea hana, ʻo ia ka maʻamau i hoʻohana nui ʻia i nā ʻeke plastik degradable i ka ʻoihana.
Eia nō naʻe, ʻo nā ʻeke kūʻai ʻilika i hoʻohana ʻia ma nā hale kūʻai maʻalahi o WOWO nā huaʻōlelo "nā ʻeke palekana kūlohelohe degradable", me ka ʻole o ka māka ʻana i nā kūlana hana a i ʻole nā ​​ʻano plastik. He ʻokoʻa iki kēia ʻeke plastik mai ka familymart, ʻoi aku ka mānoanoa a ʻoi aku ka maʻalahi o ka ʻili.
Eia kekahi, ʻo ka maʻamau ma nā ʻeke plastik o ʻekolu hale kūʻai nui ʻo Plastic Shopping Bags (GB/T21661-2008). Ua paʻi ʻia kekahi mau ʻeke plastik e hoʻokō nei i kēia maʻamau me ka slogan o ka "ʻeke pale ʻona' hoʻi i ka home". Hiki ke hoʻohaʻahaʻa ʻia kēia ʻano ʻeke plastik? Ua ʻōlelo ka poʻe kālepa ʻaʻole lākou he ʻeke plastik degradable, a ua kākau ʻia nā huaʻōlelo "palekana kūlohelohe" me ka manaʻolana e hiki i nā mea āpau ke hoʻohana iā lākou i nā manawa he nui.
Ma waho aʻe o ke kipa ʻana iā Shangchao, ua ʻike ka mea kākau moʻolelo ma kahi kikowaena kūʻai ma Erxianqiao aia ʻelua mau ʻano ʻeke palaka degradable i kūʻai ʻia ma aneʻi. Ua like kekahi me ka mea ma ka hale kūʻai maʻalahi o WOWO, me ka ʻili maʻemaʻe, a ʻo kekahi e like me ka ʻeke plastik degradable i hoʻohana ʻia ma familymart, me ke kaumaha māmā.
Nīnau pūnaewele
E hoʻokō i nā ʻano maʻamau, a ʻokoʻa nā maʻamau mai kēlā me kēia ʻāina
Ma hope o ke komo ʻana i nā "ʻeke plastik degradable" ma ka pūnaewele kūʻai, ua kūkākūkā ka mea kākau moʻolelo i ʻelima a ʻeono mau hale kūʻai me ka nui o ke kūʻai aku ʻana, a ʻike ʻia ʻo nā ʻeke ʻeke i hoʻohaʻahaʻa ʻia i kūʻai ʻia ma ka pūnaewele he ʻekolu mau ʻāpana: biodegradation, starch-based degradation a photodegradation.
I waena o lākou, ʻike pinepine ʻia nā ʻeke plastik biodegradable e like me nā ʻeke plastik biodegradable piha, a ʻo ke kūlana hoʻokō ʻo GB/T38082-2019. Hoʻohana ʻia ka hui ʻana o PBAT+PLA a me PBAT+PLA+ST, a ʻoi aku ka nui o ka decomposition pili i 90%. Mea palupalu, ʻeke translucent, degradation kūlohelohe, a me ke kumu kūʻai pipiʻi.
Loaʻa i nā ʻeke plastik hiki ke hoʻohaʻahaʻa i ka starch ma muli o ka bio-based corn starch ST30 degradable material, a ʻo ke kūlana hoʻokō ʻo GB/T38079-2019. Hoʻohana ʻia ka ST30 mea kanu kānana starch huila, a ʻo ka ʻike bio-based he 20% -50%. He palupalu iki ka mea, he waiu ka ʻeke a melemele, hiki ke kanu ʻia a hoʻohaʻahaʻa ʻia, a ʻo ke kumukūʻai maʻalahi.
Hana ʻia ka ʻeke plastik photodegradable me ka mineral photodegradable a me ka pauka inorganic MD40, a ʻo ke kūlana hoʻokō ʻo GB/T20197-2006. Hoʻopili ʻia ka hui ʻana o ka PE a me MD40 degradable particles, a ʻoi aku ka nui o ka degradation ma luna o 30%. ʻO ka mea paʻakikī i ka hoʻopāʻana, kaʻeke keʻokeʻo milky, hiki ke hoʻopauʻia i loko o ka pauka, kanuʻia a me ka photo-oxidized, aʻo ke kumukūʻai he mea waiwai a pono.
Ma waho aʻe o nā kūlana ʻekolu i luna, ʻaʻole i ʻike ka mea kākau i ka GB/T21661-2008 i ka hōʻike nānā i hāʻawi ʻia e nā mea kālepa.
Ua ʻōlelo kekahi poʻe kālepa he ʻokoʻa nā kulekele kūloko, ma muli o kahi i hoʻohana ʻia ai. "Hoʻohana maʻamau ka biodegradation i nā wahi kahakai, a pono ia e hoʻokō i ka 100% degradation piha i ka wai. I kēia manawa, koi ʻo Hainan i ka biodegradation piha, a hiki ke hoʻohana ʻia ka hōʻemi ʻana o ka starch a me ka photodegradation ma nā wahi ʻē aʻe.
ʻokoʻa maʻamau
Ua wehewehe ka maʻamau i ke ʻano o ka mākaʻikaʻi ʻana: "e kaha iā ia ma ka huahana a i ʻole ka hōʻailona waho"
ʻO nā maʻamau no nā ʻeke plastik degradable he nani. Pono anei nā kūlana ma luna? Ua nīnau ka mea kākau moʻolelo e pili ana i kēia pilikia ma ka ʻōnaehana hōʻike piha kikokikona maʻamau a me nā pūnaewele pili o ka ʻoihana. Ma waho aʻe o ka "GB/T21661-2008 mau ʻeke kūʻai plastik" i hoʻopau ʻia i ka lā 31 Dekemaba 2020 a ua hoʻololi ʻia e "GB/T 21661-2020 mau ʻeke kūʻai plastik", ua paʻa nā kūlana ʻē aʻe i kēia manawa.
He mea pono e hoʻomaopopo i ka wehewehe ʻana o GB / T 20197-2006 i ka wehewehe ʻana, ka hoʻokaʻawale ʻana, ka hōʻailona ʻana a me ka hoʻohaʻahaʻa ʻana i nā pono hana o nā plastic degradable. Wahi a kēia maʻamau, ma lalo o nā kūlana kaiapuni i kuhikuhi ʻia, ma hope o ka manawa a me ka hoʻohui ʻana i hoʻokahi a ʻoi aku paha nā ʻanuʻu, e loli nui ke ʻano kemika o nā mea a e nalowale kekahi mau waiwai, a i ʻole e wāwahi ʻia nā plastics i nā plastic degraded. E like me kona hoʻolālā ʻana, ʻo nā ala hoʻohaʻahaʻa hope loa o nā plastic degradable e pili ana i nā plastic biodegradable, plastics compostable, photodegradable plastics a me thermooxidative degradable plastics.
I ka manawa like, ua manaʻo ʻia i loko o kēia maʻamau i ka wā e hoʻohana ai i nā hōʻailona no nā huahana plastic degradable, pono lākou e hōʻailona ʻia ma nā huahana a i ʻole ka pahu waho. ʻO ka pepa plastik polypropylene photodegradable i hana ʻia e like me kēia maʻamau he 15% ka pauka mineral a me ka 25% fiber glass ma ka nui, a ua hoʻohui ʻia ka 5% photosensitizer. ʻO 500mm, 1000mm a me 2mm ka lōʻihi, ka laula a me ka mānoanoa, i hōʻike ʻia ʻo GB/T20197/ photodegradable plastic PP-(GF25+MD15) DPA5.


Ka manawa kau: Apr-17-2021

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