Chinangwa chekutanga chepurasitiki yekurongedza marara kurapwa ndeye kudzokorodza midziyo sezviwanikwa kudzivirira zviwanikwa zvishoma uye kupedzisa kudzokorodza kwemidziyo yekurongedza.Pakati pavo, 28% yePET (polyethylene terephthalate) mabhodhoro anoshandiswa pazvinwiwa zvekabhoni anogona kushandiswazve, uye HD-PE (yakakwirira-density polyethylene) uye HD-PE yemabhodhoro emukaka inogonawo kushandiswa zvakare zvinobudirira.Kuti ufambise kudzokororwa kwemhando dzakasiyana dzezvigadzirwa zvepurasitiki mushure mekushandiswa, zvinodikanwa kugadzirisa marudzi akasiyana ezvigadzirwa zvepurasitiki.Nekuti kune akawanda uye akaomarara ekushandisa epurasitiki nzira, zvakaoma kusiyanisa mamwe marudzi ezvigadzirwa zvepurasitiki mushure mekushandisa nekungotaridzika.Saka, zviri nani kumaka mhando dzemhando pane zvigadzirwa zvepurasitiki.Ndeapi mashandisirwo, zvakanakira uye zvazvakaipira zvekodhi dzakasiyana?Izvo zvirimo zveSPI plastiki identification scheme ichaunzwa pazasi.
Zita repurasitiki - kodhi uye inoenderana kodhi kodhi ndeyekutevera:
Polyester - 01 PET(PET bhodhoro), sengemineral water bottleuye carbonated drink bhodhoro.Zvaungaita: Usashandisezve mvura inopisa mumabhodhoro ezvinwiwa.
Shandisa: Inodzivirira kupisa kusvika ku70 ℃, uye inokodzera chete kuzadza zvinwiwa zvinodziya kana zvinwiwa zvechando.Kana izere nemvura inodziya yakanyanya kana kudziya, zviri nyore kukanganisa, uye zvinhu zvinokuvadza muviri wemunhu zvinonyungudika.Uyezve, masayendisiti akawana kuti mushure memwedzi gumi yekushandiswa, No.Nokudaro, kana bhodhoro rekunwa rinoshandiswa, rirasire kure, uye usashandise sekapu yemvura kana mudziyo wekuchengetedza kutakura zvimwe zvinhu, kuitira kuti urege kukonzera matambudziko ehutano.
High density polyethylene - 02 HDPE, zvakaita sezvigadzirwa zvekuchenesauye zvigadzirwa zvekugezesa.Zvaungaita: Hazvikurudzirwi kudzokorora kana kuchenesa kusina kukwana.
Shandisa: Inogona kushandiswazve mushure mekunyatsocheneswa, asi midziyo iyi kazhinji haisi nyore kuchenesa.Zvigadzirwa zvekuchenesa zvepakutanga zvinosara uye zvinova hotbed yebhakitiriya.Zviri nani usazvishandise zvakare.
PVC - 03 PVC, sezvimwe zvinhu zvekushongedza
Shandisa: Nyaya iyi iri nyore kugadzira zvinhu zvinokuvadza kana ichipisa, uye kunyange ichasunungurwa panguva yekugadzira.Mushure mekunge zvinhu zvine chepfu zvapinda mumuviri wemunhu nechikafu, zvinogona kukonzera kenza yemazamu, kuremara kwekuzvarwa kwevachangozvarwa uye zvimwe zvirwere.Parizvino, midziyo yakagadzirwa nechinhu ichi haishandiswe kurongedza chikafu.Kana iri kushandiswa, usaite kuti ichipisa.
Yakaderera density polyethylene - 04 LDPE, senge firimu rekuchengetedza nyoro, firimu repurasitiki, etc. Zvaungaita: Usaputira purasitiki yekuputira pamusoro pechikafu muovheni yemicrowave.
Shandisa: Kudzivirira kupisa hakuna kusimba.Kazhinji, firimu rekuchengetedza PE rakakwana rinonyunguduka kana tembiricha yadarika 110 ℃, zvichisiya mamwe mapurasitiki asingagoni kusvibiswa nemuviri wemunhu.Mukuwedzera, kana chikafu chakaputirwa nepurasitiki yekupisa, mafuta ari muchikafu anogona kunyungudutsa zviri nyore zvinhu zvinokuvadza mupurasitiki.Nokudaro, kana chikafu chikaiswa muvheni yewa microwave, iyo yakaputirwa yakachena-yekuchengetedza firimu inofanira kubviswa kutanga.
Polypropylene - 05 PP(inokwanisa kumira tembiricha pamusoro pe100 ℃), sengemicrowave oven lunch box.Zvaungaita: Bvisa chivharo paunenge uchichiisa muvheni rewa microwave
Shandisa: Iro chete bhokisi repurasitiki rinogona kuiswa muvheni yemicrowave rinogona kushandiswa zvakare mushure mekunyatsocheneswa.Kunyanya kutarisisa kunofanirwa kubhadharwa kune mamwe microwave oveni masikati mabhokisi.Bhokisi rebhokisi zvechokwadi rakagadzirwa neNhamba 5 PP, asi bhokisi rebhokisi rakagadzirwa neNo. 1 PE.Sezvo PE isingakwanise kumira kupisa kwakanyanya, haigone kuiswa muvheni yewa microwave pamwe chete nebhokisi rebhokisi.Kuti uve parutivi rwakachengetedzeka, bvisa chivharo usati waisa mudziyo muvheni rewa microwave.
Polystyrene - 06 PS(Kupisa kupisa kuri 60-70 ° C, zvinwiwa zvinopisa zvinoburitsa chepfu, uye styrene ichaburitswa kana ichitsva) Semuenzaniso: mbiya yakarongedzwa instant noodles mabhokisi, mabhokisi ekudya nekukurumidza.
Zvaungaita: Usashandise microwave oven kubika ndiro dzema noodles pakarepo: haipindi kupisa uye haitonhore, asi haigone kuiswa muovheni yemicrowave kudzivirira kuburitsa makemikari nekuda kwekupisa kwakanyanya.Uye haigoni kushandiswa kurodha yakasimba asidhi (yakadai seorenji muto) uye yakasimba alkaline zvinhu, nekuti ichaora polystyrene iyo yakaipa kumuviri wemunhu uye nyore kukonzera kenza.Nokudaro, iwe unofanira kuedza kudzivisa kurongedza zvokudya zvinopisa mumabhokisi ezvokudya zvinokurumidza.
Mamwe makodhi epurasitiki - 07 Zvimwezvakadai se: kettle, kapu, bhodhoro remukaka
Zano: PC glue inogona kushandiswa kana kupisa kuburitsa bisphenol A: chinhu chinoshandiswa zvakanyanya, kunyanya mumabhodhoro emukaka.Izvo zvine nharo nekuti ine bisphenol A. Lin Hanhua, anobatana purofesa muDhipatimendi reBiology uye Chemistry yeCity University yeHong Kong, akataura kuti nedzidziso, chero BPA ichishandurwa kuita purasitiki chimiro 100% panguva yekugadzira PC. , zvinoreva kuti zvigadzirwa hazvina BPA, ndoda kuiburitsa.Zvisinei, kana chikamu chiduku chebisphenol A chisina kuchinjwa kuva chimiro chepurasitiki chePC, chinogona kubudiswa mukudya kana kunwa.Nokudaro, zvakakosha kuchenjerera paunenge uchishandisa iyi yepurasitiki.
Nguva yekutumira: Zvita-16-2022