Ba-sanda kwanon rufi bisa ga rarrabuwa na mara sanda shafi, za a iya raba zuwa kashi: Teflon shafi maras sanda kwanon rufi da yumbu rufi ba sanda kwanon rufi.
1. Teflon shafi
Mafi yawan abin da ba shi da sanda ba a rayuwar mu shine Teflon shafi, a kimiyance da aka sani da "polytetrafluoroethylene (PTFE)", wani abu ne mai tsayin daka wanda mutum ya yi, ba ya amsawa da kowane abu, duk wani karfi acid mai karfi alkali ba zai iya taimaka masa ba.
A lokaci guda, PTFE shine mafi ƙarancin ƙima na gogayya a cikin m, mafi ƙasƙanci tashin hankali, don haka babban lubricity da babban rashin sanda ya sa ana amfani da shi sosai a cikin kayan dafa abinci maras sanda, yana magance matsalar kwanon rufin da suka lalace. jama'a shekaru masu yawa.
Babban koma bayan PTFE shine baya jure yanayin zafi, kuma zai fara jurewa lokacin zafi sama da 260 ° C kuma ya fara yin ruwa a 327 ° C.Shin rufin da ba sanda ya yi illa ga jikin mutum?Shin zai haifar da ciwon daji?Ya kasance batu mai zafi na damuwa da jama'a, a gaskiya, ba ma bukatar mu damu, saboda dalilai masu zuwa.
Da farko dai, frying iyali, mafi girma shine kawai kashi saba'in zuwa tamanin bisa dari na yawan zafin mai, kimanin 200 ℃, bai isa ya lalata PTFE ba;koda da gaske kuna ƙone zafin mai na kashi casa'in cikin ɗari mai zafi, yakamata ku damu da illolin ƙonawa, ba Teflon ba.
Bincike ya gano cewa, a yanayin sama da 400 ℃, PTFE iskar gas mai saurin illa ga tsuntsaye, babu wata shaida da ke nuna cewa yana cutar da mutane, Hukumar Lafiya ta Duniya kuma ta sanya PTFE a matsayin nau'in nau'in carcinogenic Class 3, wato babu. shaida na cutarwa, iri ɗaya na abubuwa kamar maganin kafeyin, gashin gashi.
Abin da ya fi iya haifar da firgici shine abubuwan da suka hada da PFOA da PFOS a cikin tsarin samar da PTFE a baya, waɗanda aka rarraba su azaman abubuwan cutar daji a cikin nau'in 2B.Fim din "Blackwater" yana magana ne game da cutar da fitar da PFOA a cikin kogin.
Duk da haka, wurin narkewa na PFOA da PFOS shine kawai 52 ℃, wurin tafasa na 189 ℃, kamar yadda aka ambata a baya, tsarin da ba shi da sandar babban zafin jiki zai iya wuce 400 ℃, PFOA ya dade yana ƙonewa, kuma PFOA ya yanzu. An dade da dakatar da shi a yawancin ƙasashe, mu kuma mun himmatu don KYAU DAI duk samfuran ba su ƙunshi PFOA ba.
Saboda haka, da gaske ba lallai ba ne ku damu da Teflon mara amfani da kayan dafa abinci ba zai kawo matsalolin kiwon lafiya ba, tabbatar da cewa yin amfani da kayan dafa abinci.
2. Rubutun yumbu
Rubutun yumbu ba shine suturar da aka yi da yumbu ba, yana da suturar da aka yi da ma'adinan inorganic da polymethylsiloxane fusion, fa'idar ita ce mafi aminci fiye da Teflon, mafi tsayayya ga yanayin zafi (450 ℃), bayyanar filastik ya fi karfi.
Duk da haka, murfin yumbu maras nauyi ya fi ƙasa da Teflon ba kwanon rufi ba, kuma yana da sauƙin faɗuwa, rayuwar sabis ɗin gajere ne, idan kwanon Teflon na yau da kullun yana samuwa na shekara 1, yumbu maras kyau. sandar kwanon rufi na iya amfani da watanni 1-2 kawai, farashin yana da ƙasa sosai, BA a ba da shawarar KYAU DA KYAU ba.
Lokacin aikawa: Nuwamba-10-2022
