Ukugoqa ngepulasitiki okuvame ukusetshenziselwa ukupakisha ukudla ezindlini
Yiziphi Izinhlobo Zokugoqa Zepulasitiki Ezikhona?
Ukugoqa kwepulasitiki kungase kubonakale kuthambile futhi kusobala, kodwa izinto zayo ziyahlukahluka. Ngokuvamile kwenziwa ngezinto ezilandelayo zepulasitiki:
I-Polyethylene (PE):Lokhu kungenye yezinto ezisetshenziswa kakhulu zokugoqa epulasitiki, ezisetshenziswa kabanzi ukuphepha kwayo kanye nezindleko eziphansi. Ngenkathi i-polyethylene inikeza ukuphefumula okuhle, iphinde ihlupheke ngenxa yokungaqini kahle kokushisa kanye nokumelana nokunwebeka.
I-Polyvinyl chloride (PVC):Ukugoqa kwepulasitiki kwasekuqaleni okuvame ukusetshenziswa kakhulu kwe-PVC. Lolu hlobo lokugoqa epulasitiki lunokucaca okuphezulu kanye ne-ductility enhle, kodwa ngenxa ye-plasticizers engase ibe nayo, ukuphepha kwayo kuye kwakhanga ukunaka, ikakhulukazi emazingeni okushisa aphezulu noma lapho uthintana nokudla okunamafutha.
Ukugoqa ngepulasitiki okuvame ukusetshenziselwa ukupakisha ukudla ezindlini
I-Polyvinylidene chloride (PVDC):Lolu hlobo lokugoqa epulasitiki lunikeza izakhiwo ezinhle zokuthibela, kodwa ukusetshenziswa kwalo kulinganiselwe ngenxa yezindleko zalo eziphakeme kanye nomthelela wemvelo.
Ezinye izinto ezibolayo: Ngokuqwashisa ngendawo ezungezile, okunye ukugoqa kwepulasitiki sekuqalile ukufaka izinto-ezisekelwe ku-bio noma ezibolayo, njenge-polylactic acid (PLA).
Indlela Yokuhlukanisa Phakathi Kokugoqa Okushisayo Nokungashisi-okungashisi?
Lapho ufudumeza ukudla okusongwe ngepulasitiki ekhaya, kungenzeka yini ukufaka okokugoqa kwepulasitiki ngaphakathi bese kushisisa ndawonye? Ungabheka ukuhlaziya okulandelayo:
(1) I-polyethylene (PE): Lokhu ukugoqa kwepulasitiki okuvamile emakethe. Ukugoqa ngepulasitiki okwenziwe ngale nto ngokuvamile kungasetshenziselwa ukufudumeza i-microwave. Kodwa-ke, lapho kushisa isikhathi eside futhi izinga lokushisa lidlula i-110℃, lizoncibilika. Ngakho-ke, kutuswa ukuthi ungafaki ukudla okugoqwe ngalolu hlobo lwepulasitiki ku-microwave isikhathi eside, noma ukushisisa{4}}emazingeni okushisa aphezulu kakhulu isikhathi eside.
(2) I-Polyvinyl chloride (PVC):Ukugoqa ngepulasitiki okwenziwe ngale nto kuqukethe ama-plasticizers futhi kungakhulula izinto eziyingozi emazingeni okushisa aphezulu. Akunconywa ukushisa.
(3) I-Polyvinylidine chloride (PVDC):Ukugoqa kwepulasitiki okwenziwe ngalolu hlobo lwempahla kunokusebenza okuhle futhi kungamelana namazinga okushisa aphezulu kusuka ku-140 kuya ku-180 degree. Ingasetshenziselwa ukufudumeza, kodwa kuyanconywa ukuthi ungayishisi{3}kuhhavini onezinga lokushisa eliphezulu.
Ngaphezu kwalokho, ungaphinda uhlole ilebula noma imiyalelo yokupakisha. Abanye abakhiqizi bavame ukukhombisa emaphaketheni okugoqa ngepulasitiki ukuthi angasetshenziswa yini ukushisa. Uma ukugoqa kwepulasitiki kuthengwa esiteshini esivamile futhi iphakheji isho ngokucacile ukuthi ingasetshenziselwa ukushisa kwe-microwave, khona-ke lokhu kugoqa kwepulasitiki ngokuvamile kuphephile.
Ingabe I-Plastic Wrap Iqukethe I-Carcinogenic Plasticizers?
Lapho abantu becabanga ngokugoqa ipulasitiki, cishe bacabanga ngamaplasitiki e-carcinogenic. Nakuba ukugoqa kwepulasitiki kwe-PVC okuqukethe i-plasticizer DEHP kubeka engcupheni, ezinye izinhlobo zokugoqa zepulasitiki azifaki ingozi enkulu.
I-Phthalates (PAEs) yitemu elivamile lesigaba samakhemikhali e-plasticizer. Ngaphakathi kwalo mndeni wama-PEAs, i-di(2-ethylhexyl) phthalate (DEHP) iyinhlanganisela evamile esetshenziswa ekukhiqizeni imikhiqizo ye-polyvinyl chloride (PVC), efana nemishini yezokwelapha, amathoyizi, nokupakishwa.
I-DEHP ingafuduka ngesikhathi sokushisa, ibeke ingozi empilweni yabantu. Kungaphazamisa uhlelo lwe-hormone yomzimba, kubangele ukuphazamiseka kwe-endocrine, futhi kuholele ngisho nasekuzalweni okukhubazekile noma okunye ukulimala kokuzala. Kodwa-ke, ukugxila kwe-DEHP abantu abachayeka kukho nsuku zonke kungaphansi kakhulu kwamazinga angabangela lezi zinkinga zempilo. Ngaphezu kwalokho, ucwaningo lwamanje lubonisa ukuthi imiphumela engaba khona ye-DEHA ekuzaleni nasekuthuthukisweni kwezilwane inomkhawulo. Iningi lalezi zifundo zenziwa ekugxilweni okuphezulu kakhulu kunamazinga okuchayeka empilweni yansuku zonke. Ngakho-ke, inqobo nje uma ukusetshenziswa kwe-DEHP kuhlangabezana nezidingo ezifanele futhi kunengqondo, asikho isidingo sokukhathazeka kakhulu. Okufanele kuqashelwe ukuthi wonke umuntu kufanele athenge imikhiqizo yokugoqa ipulasitiki ngamashaneli asemthethweni futhi angathengi imikhiqizo engafanelekile ngenxa yokuhahela inzuzo encane.
Ngaphezu kwalokho, kufanele kuphawulwe ukuthi ukuze kuxazululwe inkinga yobuthi ye-DEHP, abantu baphinde basungula izindlela ezihlukile, njenge-dibutyl phthalate (DBP) ne-benzyl butyl phthalate (BBP). Nakuba lezi zindlela ezihlukile nazo zinezingozi ezithile zokuphepha, ziphephile uma kuqhathaniswa. Uma ukhathazekile ngezingozi zezempilo zokusebenzisa ukugoqa kwepulasitiki kwe-PVC okuqukethe i-DEHP, ungakhetha ezinye izindlela eziphephile.
Izithako zepulasitiki ezisonga ngepulasitiki zingafaka kalula-ukudla okunamafutha amaningi
Ingabe Amafutha Avuzayo We-Plastic Wrap? Ingabe Amafutha Avela Ekudleni Azoncibilikisa I-Plastic Wrap?
Abanye abantu banelukuluku lokwazi ukuthi kungani kwesinye isikhathi uwoyela omningi ephuma ebusweni bokugoqa kwepulasitiki. Ingabe kungenxa yokuthi amafutha ekudleni ancibilikisa ukugoqa kwepulasitiki? Eqinisweni, akunjalo. Ukugoqa kwepulasitiki kuyisici se-polymer, esakhiwe ngama-molecule e-ethylene e-polymerized. Kukhona izikhala phakathi kwama-molecule ezinto ze-polymer, futhi "ama-molecule kawoyela" ekudleni angadlula kulezi zikhala, okuholela ekuphumeni kukawoyela. Izikhala zamangqamuzana zokugoqa ipulasitiki ye-HDPE zincane, ngakho-ke akulula ukudonsa uwoyela; izikhala ze-LDPE zikhulu kakhulu, ngakho-ke kulula ukudonsa uwoyela.
Yingakho noma udla inkalankala ngamagilavu, izandla zakho zisazoba namafutha.
Ukugqoka amagilavu alahlwayo ukuze udle inkalankala nakho kuzovuza uwoyela
Abanye abasebenzisi benethiwekhi bangase bazibuze, kungani i-polyethylene ephansi{0}}ingenawo amanzi{1}}engakwazi ukungena? Ukugoqa kwepulasitiki-okuminyana okuphansi kwe-polyethylene ku-hydrophobic kakhulu. Amanzi awuketshezi awakwazi ukumanzisa izindonga zama-pore phakathi kwama-molecule, avimbele ukugeleza okuqhubekayo nokuvimbela amanzi ukuthi angadluli ngendlela ewuketshezi (umhwamuko ungadlula).
Uma uthola ukuthi isembozo sepulasitiki esigoqa ukudla sinamafutha avuzayo, usengakudla lokho kudla? Uma umphumela wokushisa ungacatshangelwa, uwoyela uzophuma kuphela ekugoqweni kwepulasitiki futhi ngeke awuhlakaze. Asikho isidingo sokukhathazeka ngokudla "i-liquid plastic wrap".
Amathiphu Nezinyathelo Zokuqaphela Ngokukhetha Nokusebenzisa Ukugoqa Kwepulasitiki
(1) Hlola uhlobo lwezinto ezibonakalayo:
I-Polyethylene (PE): Ngokuvamile ibhekwa njengenketho ephephile futhi efanelekile ukusetshenziswa kwansuku zonke.
I-Polyvinyl chloride (PVC): Ingaqukatha ama-plasticizers futhi iyanconywa ukugwema ukusetshenziswa ekupakisheni ukudla.
I-Polyvinylidene chloride (PVDC): Inezakhiwo ezingcono zokuvimba, kodwa ibiza kakhulu futhi inemithelela yemvelo okufanele icatshangelwe.
(2) Hlola ilebula yomkhiqizo:Hlola ukuthi iphakheji inophawu lokuphepha kokudla nokuthi imakwe njenge-microwaveable.
(3) Ukungafihli nokunamathela:Ukugoqa okuhle kwepulasitiki kufanele kube nokungafihli kahle nokunamathela okufanele ukuze kuxhunywe kalula esitsheni sokudla.
(4) Ukusetshenziswa kwezinga lokushisa eliphezulu:Landela imiyalelo yephakheji, ikakhulukazi leyo emayelana nokuthi umkhiqizo ungashiswa yini. Ungasebenzisi ukugoqa kwepulasitiki okungafanelekile ukushiswa emazingeni okushisa aphezulu, njengakumicrowave.
(5) Gwema ukuthintana ngqo{1}nokudla okunamafutha amaningi:Ezinye izinhlobo zokugoqa zepulasitiki "zizovuza uwoyela" lapho zithinta{0}}ukudla okunamafutha futhi zingase zikhiphe amakhemikhali.
(6) Ngaphezu kwalokho, ukugoqa kwepulasitiki okujwayelekile kwenziwa nge-PE. Kodwa-ke, akuwona wonke amapulastiki amakwe nge-PE,{1}}i-polyethylene ephezulu (i-HDPE), noma ephansi-i-polyethylene (LDPE) engasetshenziswa ukugoqa ukudla.Kubalulekile ukuqaphela ukuthi kufanele babe namagama "ukudla-kuphela", "ilayisensi yokuphepha kokudla" noma "QS" ukuze asetshenziselwe ukuphatha ukudla. Izikhwama zepulasitiki ezivamile zikadoti nazo zenziwe nge-PE, ngakho ungalokothi uzisebenzise ukubamba ukudla!Ngokuvamile, ukugoqa kwepulasitiki okungenakusetshenziselwa ukugoqa ukudla kuvame ukuba nama-plasticizers amaningi futhi kuqukethe izinto eziyingozi njenge-DEHP.
Okungenhla ulwazi olufanele mayelana nokugoqwa kwepulasitiki. Lapho ukhetha ukugoqa epulasitiki, kubalulekile ukunaka uhlobo nokuphepha kwezinto ukugwema ukukhetha imikhiqizo equkethe amakhemikhali ayingozi. Uma usebenzisa, landela iziqondiso zokuphepha, ikakhulukazi imiyalelo yokushisisa. Ngesikhathi esifanayo, ukucabangela izici zemvelo nokukhetha ezinye izindlela ezingasetshenziswa kabusha noma ezibolayo kunganciphisa umthelela wendawo. Ngokulandela la maphuzu, ungaqinisekisa ngokujwayelekile ukuphepha kokudla kwakho ngenkathi wehlisa ukulimala okungaba khona empilweni yakho kanye nemvelo.
