Mtengo RPET, chidule cha recycled polyethylene tetraphyte amagwiritsidwa ntchito kwambiri.Tikhala tikufotokozera PET pang'ono pansipa.Koma pakadali pano, dziwani kuti PET ndi yachinayi yomwe imagwiritsidwa ntchito kwambiri padziko lonse lapansi.PET imapezeka muzinthu zonse kuchokera ku zovala ndi chakudya.Ngati muwona mawu akuti "Mtengo RPET", zikutanthauza kuti PET yomwe imagwiritsidwa ntchito pazogulitsa iyenera kuti idachokera komwe idagwiritsidwa ntchito kale.
Kodi polyethylene Tetraphyte ndi chiyani?
Kunena zomveka, pulasitiki iliyonse yomwe mudagwiritsapo ntchito idapangidwa pogwiritsa ntchito polima.Mabotolo amkaka a PVC adzapangidwa ndi zinthu zosiyana ndi mabotolo amadzi a PET.
PET imapangidwa kuchokera ku mafuta osapsa.Chilengedwe chimakhudzidwa kwambiri ndi njira yochotsera mafuta osapsa pansi.Kuti mupange PET yosungunuka, muyenera kumwa mowa wotchedwa Ethylene glycol ndikusakaniza ndi terephthalic acid.Esterification imapezeka pamene zinthu zonsezi zimagwirizanitsidwa pamodzi, kupanga PET, polima wautali wautali.
Timasankha ma polima kutengera momwe chomaliza chidzagwirira ntchito.PET ndi thermoplastic.Izi zikutanthauza kuti imatha kupindika mosavuta ku mawonekedwe omwe akufunidwa poyitentha, ndiyeno imakhalabe ndi mphamvu ikangozizira.PET ndi yopepuka, yopanda poizoni komanso yolimba kwambiri.Ichi ndichifukwa chake ndizomwe zimayikidwa pamakampani azakudya ndi zakumwa.
Kodi ma PET amagwiritsidwa ntchito pakuyika?
Ayi. Makampani opanga mabotolo apulasitiki ndi omwe amagwiritsa ntchito kwambiri PET padziko lonse lapansi pa 30%.Komabe, izi siziri choncho.Ngakhale PET imatchedwa polyester, ndizotheka kuti zovala zambiri muzovala zanu zimapangidwa kuchokera ku PET.Madziwo saloledwa kuumba ku chidebe chomwe chikupangidwira.M'malo mwake, amadutsa pa spinnerate (pafupifupi mutu wa shawa) ndikupanga zingwe zazitali.Ulusi umenewu ukhoza kulukidwa pamodzi kuti ukhale nsalu yopepuka komanso yolimba.Polyester ndiye fiber yopangidwa ndi anthu yomwe imagwiritsidwa ntchito kwambiri pamakampani opanga nsalu.Polyester ndiyosavuta kupanga kuposa thonje, ndipo sivuta kusinthasintha kwamitengo chifukwa cha nyengo.Ndizotheka kuti chovala chomwe mwavala pano chili ndi polyester.Polyester amagwiritsidwa ntchito kwambiri popanga matenti ndi malamba onyamula katundu.Polyester imatha kugwira pafupifupi chilichonse chomwe chimafunikira kupepuka komanso chokhazikika.
PET zabwino ndi zoipa mfundo
PET ili ndi maubwino ambiri, kuphatikiza kukhala olimba komanso osinthika komanso kukhala otsika mtengo kuposa zosankha zina.PET imatha kubwezeretsedwanso, monga mapulasitiki ena.Ku UK, 3% yokha idakonzedwanso kuchokera ku mabotolo a PET ku 2001. Chiwerengero chimenecho chinakwera kufika pa 60% mu 2014 chifukwa cha zakumwa zoledzeretsa zomwe zimasinthira mabotolo a PET kulikonse kumene kuli kotheka, komanso njira zambiri zobwezeretsanso dziko zomwe zimapangitsa kuti zikhale zosavuta kukonzanso.
PET ili ndi chimodzi mwazofooka zake zazikulu.PET ndi chinthu cholimba kwambiri moti zimatenga zaka 700 kuti ziwonongeke kukhala dothi.Ngakhale kukonzanso kwa PET kwawona kusintha kwakukulu m'zaka khumi zapitazi, zambiri ziyenera kuchitidwa.Madera ambiri padziko lapansi ali kale ndi mapiri akulu ngati mizinda yaying'ono, yodzaza ndi pulasitiki ya PET yokha.Tikupitiriza kuwonjezera pa zotayiramo izi tsiku lililonse chifukwa chogwiritsa ntchito kwambiri PET.
PET pulasitiki ndi chinthu cholimba kwambiri.Zimatenga zaka 700 kuti pulasitiki ya PET ithyoledwe ngati itatha.Pali mbali zapadziko lonse lapansi zomwe zili ndi mapiri akulu ngati mizinda yaying'ono, koma onse amapangidwa ndi pulasitiki ya PET.
Kotero, zingatheke bwanjiMtengo RPETkuthetsa vuto loipitsa pulasitiki m'dziko lathu lapansi?
RPET kwenikweni imatenga pulasitiki yomwe idapangidwa kale (nthawi zambiri mabotolo apulasitiki) ndikuiphwanya kukhala ma flakes ang'onoang'ono.PET pakatikati pa botolo lililonse imasiyanitsidwa ndikusungunula ma flakes awa.PET itha kugwiritsidwa ntchito kupanga chilichonse kuchokera ku ma sweti kupita ku mabotolo ena apulasitiki.PET iyi ndi 50% yopatsa mphamvu kuposa kupanga PET kuchokera poyambira.Kuonjezera apo, mabotolo omwe alipo angagwiritsidwe ntchito kupanga PET, zomwe zikutanthauza kuti samatha kutayirako.Izi zimatipangitsa kuti tisiye dziko lapansi momwe lilili.M'malo mochotsa chinthu chofunikira kwambiri mumafuta osapsa, omwe amatha kuwononga kwambiri, timagwiritsa ntchito kuchuluka kwazinthu zomwe zikadathandizira mwachindunji kutayidwa.
Nthawi yotumiza: Sep-02-2022