Ngaba iTeflon ikhuselekile?

Kwiikhitshi zaseMelika, iipani ezigqunywe ngeTeflon ziyakhazimla. Umlingo wabo olula ukuwucoca? Ukanti, kuvela iisebezi: 'Kuthiwani ngePFOA? Nobushushu obuphezulu?' Phakathi kokutsalana kweemveliso zeTeflon, inkxalabo yokubila. Ngamabali omsi wepolymer kunye nemibuzo ngokhuseleko, sizifumana sikwindlela edibanayo. Intsimbi engatyiwayo kunye nentsimbi ephoswe ngentsimbi iyatsala, kodwa ibali likaTeflon licela ukuba lixelwe. Masingene ngaphakathi.

Yintoni iTeflon?

I-Teflon ligama lebrendi, elaqulunqwa yiNkampani yeChemours, kuluhlu lweemveliso ezisekwe ikakhulu kwi-polytetrafluoroethylene (PTFE). Yaziwa ngokubanzi ngeempawu zayo zokungancamathiseli kwaye iye yaba ligama lasekhaya elifana ne-non-stick-cookware kunye neentlobo ezahlukeneyo zezicelo, ezinje ngokufakelwa kwentambo, itywina, kunye nempahla.

Ngaba wakha wayikhupha loo pani ebhityileyo ethembisa isidlo sakusasa esingaxutywanga? Ngumlingo waseTeflon lowo. Izalwe kuqhina phakathi kwekhabhoni kunye nefluorine, iimveliso zeTeflon zazitshatshelisele ihlabathi leengubo ezingasingathi, ziguqula iikhitshi zethu kunye nokwenza ucoceko lube yimpepho.

Kodwa nali iyelenqe elijijekileyo: ukusebeza kwe-'PFOA' okanye 'i-perfluorooctanoic acid' ihlala ijikeleza iincoko zaseTeflon. Ngokwembali enxulunyaniswe nenkqubo yokwenziwa kweTeflon, iinkxalabo zathi kratya xa iTeflon igqunywe i-cookware idibana nobushushu obuphezulu, isalatha umsi onokubakho wepolymer. Ngombulelo, inguqulelo entsha ingenile. Namhlanje, iimveliso zeTeflon ezininzi zinxiba ibheji 'ye-PFOA-free', iqinisekisa ukuba zombini iipancakes zakho kunye noxolo lwengqondo zisezandleni ezilungileyo.

Ke, yintoni i-PFOA?PFOA, emfutshane kwi-perfluorooctanoic acid, yikhompawundi eyenziweyo ekhe yasetyenziswa ngokubanzi kwi-nonstick cookware kunye nezinye iimveliso ezahlukeneyo. Ukuzingisa kokusingqongileyo kwaye kudityaniswe neenkxalabo ezininzi zempilo, ukusetyenziswa kwayo kuye kwapheliswa kakhulu ngabavelisi kwiminyaka yakutshanje ngenxa yoqwalaselo lokhuseleko.

Yintoni i-PTFE Coated?

I-Polytetrafluoroethylene (PTFE) yi-synthetic fluoropolymer ye-tetrafluoroethylene. Yiplastiki esebenza kakuhle kakhulu eyaziwayo ngeempawu zayo ezinganamatheli, ukumelana nobushushu obuphezulu, kunye nokumelana neekhemikhali. I-PTFE coated ingasetyenziswa kuluhlu olubanzi lweemveliso, ukusuka kwiipani ukuya kumacandelo omatshini, ukubanika indawo egudileyo, engasebenziyo, kunye nengadibaniyo.

Xa utyibiliza iqanda epanini yakho nge-zero fuss, ufumana imimangaliso ye-PTFE, eyaziwa ngokuba yiTeflon coated. Lo mmangaliso ungabambekiyo, ozalwe ngekhabhoni kunye nefluorine, wenza i-cookware ibe liphupha lokuphatha kwaye kulula ukuyicoca.

Kodwa nantsi i-tidbit: iimveliso zeTeflon zakuqala zadityaniswa ne-'PFOA', zibangela isiphithiphithi xa ezi zinto zidibana nobushushu obuphezulu, zixela umsi onokubakho wepolymer. Ukukhawuleza ukuya namhlanje, kwaye iimveliso ezininzi zeTeflon ziqhayisa ngebheji 'ye-PFOA-free', iqinisekisa ukuba ukupheka kwakho okungenamsebenzi akubeka esichengeni kukhuseleko.

Ngaba i-PTFE ayilunganga kuwe?

I-PTFE ecocekileyo i-inert, kwi-core yayo, i-PTFE, intliziyo yeemveliso ezininzi zeTeflon, ihlala ingasebenzi. Ibhondi yayo yekhabhoni kunye nefluorine iqinisekisa ukuba ayisebenzi. Nangona kunjalo, i-hitch ibonakala ngokushisa okuphezulu. Kumaqondo obushushu anyuswe ngokugqithisileyo (ngokuqhelekileyo ngaphezu kwama-570°F okanye ama-300°C), kukho amathuba okuba kubekho umsi wepolymer, ngamanye amaxesha obangela i-'polymer fume fever.

Ukongeza umbimbi kwibali 'PFOA'. Kwakuba yinxalenye yengxelo yeTeflon, yaphakamisa amashiya ngenxa yeenkxalabo zempilo kumaqondo obushushu aphezulu. Iindaba ezilungileyo? Iimveliso zeTeflon zanamhlanje ngokuzingca zithwala isitampu esithi 'PFOA-free'.

Ngamafutshane, njengaso nasiphi na isixhobo ekhitshini, iTeflon cookware, xa isetyenziswe ngokufanelekileyo, idibanisa ngokulula nokhuseleko.

Ngaba iTeflon inetyhefu?

I-PTFE, kunye nodibaniso olukhethekileyo lwekhabhoni kunye nefluorine, ibalasele ngenxa yokungangeni kwemichiza. Oku kuthetha ukuba, phantsi kweemeko eziqhelekileyo, kufana nembiza yensimbi engenasici ongayisebenzisa kwiisuphu okanye i-cast iron skillet ye-steaks yakho elwandle. Ayidibanisi, ivumela ukutya kutyibilike.

Nangona kunjalo, xa ibali litshintshela kubushushu obuphezulu, izinto ziba nzima. Ukutyhalela i-cookware engasebenziyo ukuya kumaqondo obushushu agqithisileyo, ngaphaya koluhlu olucetyiswayo, kunokukhokelela ekukhululweni komsi wepolymer. Abanye abantu, xa beveziwe, banokufumana ukungonwabi okwexeshana okwaziwa ngokuba yi-'polymer fume fever'.

Ke kukho i-subplot ye-'PFOA'. Ngelixa yayikhe yadityaniswa nenkqubo yokuvelisa ezinye iimveliso zeTeflon, iinkxalabo malunga neziphumo zempilo zenza ukuba amashishini ajikeleze. Namhlanje, ukukhanya kuqaqambile ngokuqaqambileyo kwiimveliso ezininzi zeTeflon ezifakwe isitampu se-'PFOA-free', ingqina lokuziphendukela kwemvelo okuqhubekayo.

Ke, ngelixa i-teflon igqunyiwe yenze ukuba iikhikhithi zethu zicoceke lula, ziza ne-mantra elula: hlonipha imida yazo. Iphathwa ngenkathalo, intsomi ye-PTFE yenye yezinto eziluncedo, hayi ubutyhefu.

Ngaba iTeflon ikhuselekile?

I-PTFE, entliziyweni yayo, kukudityaniswa kwekhabhoni kunye nefluorine. Le bond yeekhemikhali inika ukungazinzi kwendalo, iyenza ibe yintyatyambo eludongeni. Kanye njengembiza yakho yentsimbi ethembekileyo okanye intsimbi endala, ayidibani; yenza lula.
Nangona kunjalo, njengaye nawuphi na umculi olungileyo, iTeflon eqatywe inesetingi ekhethwayo. Ngena kumaqondo obushushu aphezulu, unyuka ngaphaya kwendawo yawo yokuthuthuzela, kwaye ungadibana nomsi wepolymer. Ngelixa ixesha elifutshane, ukuba sesichengeni kunokukhokelela kwi-'polymer fume fever' enqabileyo.

Ibali le-'PFOA' lakha langena kwibali le-PTFE, libangela iinkxalabo zempilo. Kodwa utshintsho ngundoqo wento entsha. Imakethi yanamhlanje iqaqamba ngeemveliso zeTeflon ngokuzingca ezibonisa 'i-PFOA-free' iibheji, ebonisa inkqubo yokuvelisa ekhuselekileyo.

Kwintsebenzo ezukileyo yobugcisa bokupheka, ngononophelo olufanelekileyo, i-PTFE kwiingubo ezingenanto zihlala zililungu elithembekileyo. Ithembisa ukudibanisa okulula ukucoca kunye nokusebenza kakuhle, ngaphandle kokubeka esichengeni ukukhanya kokhuseleko.Xa isetyenziswe ngokuchanekileyo, iimveliso ezigqunywe nge-PTFE zikhuselekile. Kubalulekile uku:
1.Kunqanda ukuFundisa ngokugqithisileyo:Ungaze ushiye isinxibo sakho sokupheka esigqunywe yi-PTFE kubushushu obuphezulu ixesha elide.
2.Sebenzisa izixhobo ezinobumnene: Ziphephe isinyithi okanye izinto ezibukhali ezinokukrwela kwaye zithobe isidanga.
3.Ukuthenga kubavelisi abaGunyazisiweyo: Qinisekisa ukuba imveliso iqinisekisiwe ngePFOA kwaye ithobela ukhuseleko kunye nemigangatho yomgangatho.