{"id":89987,"date":"2022-04-06T16:19:36","date_gmt":"2022-04-06T14:19:36","guid":{"rendered":"https:\/\/slovaklinesmagazin.sk\/cms\/?p=89987"},"modified":"2022-04-06T16:19:36","modified_gmt":"2022-04-06T14:19:36","slug":"teflon-oslavuje-viac-nez-osemdesiatiny-pracuje-v-kozme-aj-v-kuchyni","status":"publish","type":"post","link":"https:\/\/www.slovaklinesmagazin.sk\/cms\/2022\/04\/teflon-oslavuje-viac-nez-osemdesiatiny-pracuje-v-kozme-aj-v-kuchyni\/","title":{"rendered":"Tefl\u00f3n oslavuje viac ne\u017e osemdesiatiny, pracuje v kozme aj v kuchyni"},"content":{"rendered":"

Tefl\u00f3n patr\u00ed k t\u00fdm vyn\u00e1lezom, pri ktor\u00fdch objave zohrala ve\u013ek\u00fa rolu \u0161\u0165astena. Revolu\u010dn\u00fd nepri\u013enav\u00fd a zna\u010dne odoln\u00fd materi\u00e1l m\u00e1 dnes ve\u013emi \u0161irok\u00e9 uplatnenie \u2013 jeho kvality oce\u0148uj\u00fa gazdinky pri varen\u00ed, profesion\u00e1lni kuch\u00e1ri a ich kuchyne na mieru<\/strong><\/span><\/a>, vyu\u017eitie m\u00e1 ale aj vo vesm\u00edrnom v\u00fdskume.<\/p>\n

Za vznikom tefl\u00f3nu stoj\u00ed pracovn\u00edk koncernu DuPont Roy Plunkett, ktor\u00fd ho objavil n\u00e1hodou pred 70 rokmi, 6. apr\u00edla 1938 v New Jersey.
\nMlad\u00fd chemik Plunkett vtedy pracoval na v\u00fdvoji netoxick\u00e9ho a nehor\u013eav\u00e9ho chladiva pre strojn\u00e9 chladenie. Ke\u010f si raz prezeral valec kompresora, v\u0161imol si biely pr\u00e1\u0161ok usaden\u00fd okolo sedla ventilu. Bol to polymerizovan\u00fd tetraflu\u00f3retyl\u00e9n (PTFE). Nesk\u00f4r Plunket dostal na t\u00fato l\u00e1tku patent a po desiatich rokoch v\u00fdskumu ju americk\u00e1 spolo\u010dnos\u0165 zaregistrovala pod obchodnou zna\u010dkou Teflon (v roku 1945).<\/p>\n

Kvalitn\u00fd tefl\u00f3n je nepri\u013enav\u00fd povrch, ktor\u00fd bol ako najhlad\u0161\u00ed materi\u00e1l zap\u00edsan\u00fd do Guinessovej knihy rekordov. Je nenasiakav\u00fd, netoxick\u00fd, odoln\u00fd vo\u010di svetlu, starnutiu a krehnutiu. Jeho vlastnosti nie s\u00fa v \u0161irokom rozmedz\u00ed (20 a\u017e 250 stup\u0148ov Celzia) takmer z\u00e1visl\u00e9 od teploty. Teplota, pri ktorej sa tefl\u00f3n rozklad\u00e1, je 360 \u200b\u200bstup\u0148ov a hor\u00ed a\u017e pri 500 a\u017e 560 stup\u0148och Celzia. M\u00e1 v\u00fdborn\u00e9 elektroizola\u010dn\u00e9 vlastnosti.<\/p>\n

Vaj\u00ed\u010dka, lo\u017eisk\u00e1, raketa…<\/strong><\/p>\n

Spo\u010diatku sa l\u00e1tka hodila sk\u00f4r vedcom a technikom: chr\u00e1ni pred kor\u00f3ziou Sochu slobody a uplatnenie na\u0161la aj v rakete, ktor\u00e1 doletela na Mesiac. Potom ale niekomu napadlo, \u017ee na tefl\u00f3n sa neprilepia ani vypr\u00e1\u017eaj\u00face sa vaj\u00ed\u010dka. V tej chv\u00edli sa tefl\u00f3n vydal na cestu do kuch\u00fd\u0148. Materi\u00e1l lahod\u00ed kuch\u00e1rkam aj dietol\u00f3gom: pri pe\u010den\u00ed na tefl\u00f3novej panvici sa d\u00e1 toti\u017e vysta\u010di\u0165 s minimom tuku. V\u00fdrobky s\u00fa ale n\u00e1chyln\u00e9 k mechanick\u00e9mu oderu.<\/p>\n

\"\"<\/p>\n

Uplatnenie m\u00e1 tefl\u00f3n ve\u013emi rozsiahle – v textilnom, lek\u00e1rskom, potravin\u00e1rskom, \u0165a\u017eobnom, gum\u00e1renskom, papierenskom i skl\u00e1rskom priemysle. Pou\u017e\u00edva sa aj v oblastiach telekomunik\u00e1ci\u00ed, architekt\u00fary \u010di v\u00fdvoja vesm\u00edrnych technol\u00f3gi\u00ed. V\u010faka \u013eahk\u00e9mu \u010disteniu s\u00fa povlaky z tefl\u00f3nu aplikovan\u00e9 na reaktorov\u00e9 n\u00e1dr\u017ee, n\u00e1sypky, meracie sondy, tesnenia, najr\u00f4znej\u0161ie lo\u017eisk\u00e1, \u010derpadl\u00e1, filtre, ventily alebo potrubia.<\/p>\n

Sl\u00e1va tefl\u00f3nu dosiahla tak\u00fa sl\u00e1vu, \u017ee \u013eudia si v\u0161eobecne tento n\u00e1zov sp\u00e1jaj\u00fa s pomenovan\u00edm pre nepri\u013enav\u00e9 povrchy a nielen so zna\u010dkou konkr\u00e9tneho v\u00fdrobku firmy DuPont. T\u00e1 teda musela kv\u00f4li \u010fal\u0161\u00edm v\u00fdrobcom, ktor\u00ed sa so svojimi produktmi chceli na \u00faspechu tefl\u00f3nu pri\u017eivi\u0165, zavies\u0165 monitoring v\u00fdrobkov s takouto ochrannou vrstvou a str\u00e1\u017ei\u0165 si licencie, ktor\u00e9 stanovuj\u00fa pr\u00e1vo na pou\u017eitie tohto n\u00e1zvu.<\/p>\n

Vyn\u00e1lezca Plunkett (1910 a\u017e 1994), ktor\u00fd sa narodil v Orange County v Kalifornii, vy\u0161tudoval \u0160t\u00e1tnu univerzitu v Ohiu (1936). Na svojom konte m\u00e1 mno\u017estvo \u010fal\u0161\u00edch objavov.<\/p>\n

Zdroj: https:\/\/bit.ly\/3uW8iNX
\nViac info na: https:\/\/www.tyden.cz\/
\nFoto: https:\/\/www.pxfuel.com\/<\/p>\n","protected":false},"excerpt":{"rendered":"

Tefl\u00f3n patr\u00ed k t\u00fdm vyn\u00e1lezom, pri ktor\u00fdch objave zohrala ve\u013ek\u00fa rolu \u0161\u0165astena. Revolu\u010dn\u00fd nepri\u013enav\u00fd a zna\u010dne odoln\u00fd materi\u00e1l m\u00e1 dnes ve\u013emi \u0161irok\u00e9 uplatnenie \u2013 jeho kvality oce\u0148uj\u00fa gazdinky pri varen\u00ed, profesion\u00e1lni kuch\u00e1ri a ich kuchyne na mieru, vyu\u017eitie m\u00e1 ale aj vo vesm\u00edrnom v\u00fdskume. Za vznikom tefl\u00f3nu stoj\u00ed pracovn\u00edk koncernu DuPont Roy Plunkett, ktor\u00fd ho […]<\/p>\n","protected":false},"author":7,"featured_media":89988,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[46,50,43],"tags":[],"class_list":["post-89987","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-gastronomia","category-radim-vam","category-technologie","eq-blocks"],"_links":{"self":[{"href":"https:\/\/www.slovaklinesmagazin.sk\/cms\/wp-json\/wp\/v2\/posts\/89987","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.slovaklinesmagazin.sk\/cms\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.slovaklinesmagazin.sk\/cms\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.slovaklinesmagazin.sk\/cms\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/www.slovaklinesmagazin.sk\/cms\/wp-json\/wp\/v2\/comments?post=89987"}],"version-history":[{"count":1,"href":"https:\/\/www.slovaklinesmagazin.sk\/cms\/wp-json\/wp\/v2\/posts\/89987\/revisions"}],"predecessor-version":[{"id":89990,"href":"https:\/\/www.slovaklinesmagazin.sk\/cms\/wp-json\/wp\/v2\/posts\/89987\/revisions\/89990"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.slovaklinesmagazin.sk\/cms\/wp-json\/wp\/v2\/media\/89988"}],"wp:attachment":[{"href":"https:\/\/www.slovaklinesmagazin.sk\/cms\/wp-json\/wp\/v2\/media?parent=89987"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.slovaklinesmagazin.sk\/cms\/wp-json\/wp\/v2\/categories?post=89987"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.slovaklinesmagazin.sk\/cms\/wp-json\/wp\/v2\/tags?post=89987"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}