{"id":53006,"date":"2021-04-18T22:16:00","date_gmt":"2021-04-18T19:16:00","guid":{"rendered":"http:\/\/life.karpat.in.ua\/?p=53006"},"modified":"2021-04-17T21:05:54","modified_gmt":"2021-04-17T18:05:54","slug":"az-eddigi-legfeherebb-festek-segitheti-a-bolygo-huteset","status":"publish","type":"post","link":"https:\/\/life.karpat.in.ua\/?p=53006&lang=hu","title":{"rendered":"Az eddigi legfeh\u00e9rebb fest\u00e9k seg\u00edtheti a bolyg\u00f3 h\u0171t\u00e9s\u00e9t"},"content":{"rendered":"\n

Az eddigi legfeh\u00e9rebb fest\u00e9ket \u00e1ll\u00edtottak el\u0151 amerikai kutat\u00f3k azzal a c\u00e9llal, hogy jav\u00edts\u00e1k az \u00e9p\u00fcletek h\u0171t\u00e9s\u00e9t \u00e9s hozz\u00e1j\u00e1ruljanak az \u00e9ghajlatv\u00e1ltoz\u00e1s probl\u00e9m\u00e1j\u00e1nak kezel\u00e9s\u00e9hez.<\/strong><\/p>\n\n\n\n

Az \u00faj fest\u00e9k a napf\u00e9ny 98 sz\u00e1zal\u00e9k\u00e1t veri vissza \u00e9s a vil\u00e1g\u0171rbe sug\u00e1rozza ki az infrav\u00f6r\u00f6s h\u0151t. A teszteken a k\u00f6rnyez\u0151 leveg\u0151 h\u0151m\u00e9rs\u00e9kletn\u00e9l 4,5 Celsius-fokkal hidegebbre h\u0171t\u00f6tte le a fel\u00fcleteket m\u00e9g k\u00f6zvetlen, er\u0151s napsug\u00e1rz\u00e1s eset\u00e9n is \u2013 olvashat\u00f3 a The Guardian c\u00edm\u0171 brit napilap online kiad\u00e1s\u00e1ban.<\/p>\n\n\n\n

\"\"<\/figure><\/div>\n\n\n\n

A szakemberek szerint a term\u00e9k egy-k\u00e9t \u00e9ven bel\u00fcl forgalomba ker\u00fclhet. A tet\u0151k feh\u00e9rre fest\u00e9se \u00e9vsz\u00e1zadok \u00f3ta bevett gyakorlat az \u00e9p\u00fcletek h\u0171t\u00e9s\u00e9re.<\/p>\n\n\n\n

A jelenleg el\u00e9rhet\u0151 f\u00e9nyvisszaver\u0151 feh\u00e9r fest\u00e9kek ugyan j\u00f3val hat\u00e9konyabbak, mint a s\u00f6t\u00e9t sz\u00edn\u0171 tet\u0151burkolatok, de a napf\u00e9ny csup\u00e1n 80-90 sz\u00e1zal\u00e9k\u00e1t verik vissza \u00e9s elnyelik az iboly\u00e1nt\u00fali f\u00e9nyt, ami azt jelenti, hogy nem tudj\u00e1k a k\u00f6rnyezeti h\u0151m\u00e9rs\u00e9kletn\u00e9l hidegebbre leh\u0171teni a fel\u00fcleteket.<\/p>\n\n\n\n

Az \u00faj fest\u00e9k azonban k\u00e9pes erre, cs\u00f6kkentve a l\u00e9gkondicion\u00e1l\u00f3k sz\u00fcks\u00e9g\u00e9t \u00e9s a m\u0171k\u00f6dtet\u00e9s\u00fckkel j\u00e1r\u00f3 sz\u00e9n-dioxid-kibocs\u00e1t\u00e1st.<\/p>\n\n\n\n

\"\"<\/figure><\/div>\n\n\n\n

\u201eA legfeh\u00e9rebb feh\u00e9r azt jelenti, hogy a fest\u00e9k a lehet\u0151 legnagyobb mennyis\u00e9g\u0171 napf\u00e9nyt k\u00e9pes visszaverni az \u0171rbe\u201d \u2013 mondta Xiulin Ruan, az amerikai Purdue Egyetem munkat\u00e1rsa.<\/p>\n\n\n\n

A fest\u00e9k h\u00e1rom t\u00e9nyez\u0151nek k\u00f6sz\u00f6nheti hat\u00e9konys\u00e1g\u00e1t: a sz\u00ednez\u0151anyagk\u00e9nt haszn\u00e1lt b\u00e1rium-szulf\u00e1tnak, amely a hagyom\u00e1nyosan alkalmazott tit\u00e1n-dioxiddal szemben nem nyeli el az UV-f\u00e9nyt, a magas \u2013 60 sz\u00e1zal\u00e9kos \u2013 pigmentkoncentr\u00e1ci\u00f3nak, valamint a k\u00fcl\u00f6nb\u00f6z\u0151 m\u00e9ret\u0171 pigmentr\u00e9szecsk\u00e9k alkalmaz\u00e1s\u00e1nak. A szakemberek szerint az ultrafeh\u00e9r fest\u00e9ket a hagyom\u00e1nyos v\u00e1ltozatokhoz hasonl\u00f3an lehet legy\u00e1rtani \u00e9s \u00e1rban sem t\u00e9rnek el egym\u00e1st\u00f3l. A teszteken a fest\u00e9k kop\u00e1s\u00e1ll\u00f3nak bizonyult, de tov\u00e1bbi vizsg\u00e1latokra lesz sz\u00fcks\u00e9g annak meg\u00e1llap\u00edt\u00e1s\u00e1ra, hogy hossz\u00fa t\u00e1von mennyire tart\u00f3s.<\/p>\n\n\n\n

Ruan elmondta, hogy a fest\u00e9k nem jelent kock\u00e1zatot az emberek l\u00e1t\u00e1s\u00e1ra, a fel\u00fcletekr\u0151l sz\u00e9tsz\u00f3rtan visszaver\u0151d\u0151 napf\u00e9ny nem er\u0151s.<\/p>\n\n\n\n

A szakemberek az ACS Applied Materials & Interfaces c\u00edm\u0171 foly\u00f3iratban sz\u00e1moltak be az eredm\u00e9nyeikr\u0151l.<\/p>\n\n\n\n

(bama.hu)<\/a><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"

Az eddigi legfeh\u00e9rebb fest\u00e9ket \u00e1ll\u00edtottak el\u0151 amerikai kutat\u00f3k azzal a c\u00e9llal, hogy jav\u00edts\u00e1k az \u00e9p\u00fcletek h\u0171t\u00e9s\u00e9t \u00e9s hozz\u00e1j\u00e1ruljanak az \u00e9ghajlatv\u00e1ltoz\u00e1s probl\u00e9m\u00e1j\u00e1nak kezel\u00e9s\u00e9hez.<\/p>\n","protected":false},"author":12,"featured_media":53008,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[41,596,598,39],"tags":[45122,45120,45119],"class_list":["post-53006","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cikkek","category-erdekes","category-tudomany","category-vilag","tag-epuletek-hutese","tag-feher-festek","tag-uj-festek"],"_links":{"self":[{"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=\/wp\/v2\/posts\/53006","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=\/wp\/v2\/users\/12"}],"replies":[{"embeddable":true,"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=53006"}],"version-history":[{"count":0,"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=\/wp\/v2\/posts\/53006\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=\/wp\/v2\/media\/53008"}],"wp:attachment":[{"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=53006"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=53006"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=53006"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}