{"id":875,"date":"2019-09-18T12:45:41","date_gmt":"2019-09-18T10:45:41","guid":{"rendered":"https:\/\/www.festivalvedy.sk\/wp2\/modifikacia-dreva-plazmou\/"},"modified":"2019-09-18T12:45:41","modified_gmt":"2019-09-18T10:45:41","slug":"modifikacia-dreva-plazmou","status":"publish","type":"post","link":"https:\/\/www.festivalvedy.sk\/wp2\/modifikacia-dreva-plazmou\/","title":{"rendered":"Modifik\u00e1cia dreva plazmou"},"content":{"rendered":"<p>Autor\/autori: Laura \u0160pakov\u00e1  <\/p>\n<p>Drevo, drevn\u00e9 kompozity, dreven\u00fd n\u00e1bytok, kon\u0161trukcie a in\u00e9 v\u00fdrobky z dreva \u010dasom podliehaj\u00fa po\u0161kodeniam vplyvom r\u00f4znych abiotick\u00fdch \u010dinite\u013eov (UV \u017eiarenie, kysl\u00edk, voda a in\u00e9) a biologick\u00fdch faktorov. T\u00fdmto po\u0161kodeniam m\u00f4\u017eeme zabr\u00e1ni\u0165 pomocou r\u00f4znych n\u00e1terov a prostriedkov na povrchov\u00fa \u00fapravu. Mnoh\u00e9 z nich s\u00fa v\u0161ak riedite\u013en\u00e9 len prchav\u00fdmi organick\u00fdmi rozp\u00fa\u0161\u0165adlami. Smernica Eur\u00f3pskeho parlamentu zameran\u00e1 na zn\u00ed\u017eenie negat\u00edvnych environment\u00e1lnych dopadov emisi\u00ed prchav\u00fdch organick\u00fdch l\u00e1tok je d\u00f4vodom na h\u013eadanie alternat\u00edvnych sp\u00f4sobov povrchovej \u00fapravy dreva. Jednou z mo\u017enost\u00ed je nahradenie n\u00e1terov riedite\u013en\u00fdch organick\u00fdmi rozp\u00fa\u0161\u0165adlami vodouriedite\u013en\u00fdmi n\u00e1termi. Povrch dreva v\u0161ak nie je homog\u00e9nny. Voda neprilieha na cel\u00fd povrch rovnako. N\u00e1sledkom uveden\u00e9ho m\u00f4\u017ee by\u0165 po istom \u010dase znehodnotenie povrchov\u00e9ho n\u00e1teru a dreven\u00e9ho materi\u00e1lu. Rie\u0161en\u00edm by mohlo by\u0165 zabezpe\u010denie lep\u0161ej zm\u00e1\u010davosti dreven\u00e9ho povrchu vodou, na ktor\u00fa n\u00e1m posl\u00fa\u017ei n\u00edzko-teplotn\u00e1 atmosferick\u00e1 plazma. Met\u00f3da aktivuje povrch dreva, umo\u017en\u00ed vytvorenie mno\u017estva nov\u00fdch akt\u00edvnych centier, ktor\u00e9 n\u00e1sledne zabezpe\u010dia vytvorenie nov\u00fdch chemick\u00fdch v\u00e4zieb medzi drevom a n\u00e1terom. Tak zabezpe\u010dia jeho lep\u0161ie pri\u013enutie k povrchu dreva, \u010do pred\u013a\u017ei jeho \u017eivotnos\u0165. Tento cie\u013e sme sa sna\u017eili dosiahnu\u0165 v laborat\u00f3riu FCHPT STU v Bratislave, na Oddelen\u00ed dreva, celul\u00f3zy a papiera. V plazmovom gener\u00e1tore sme na povrch dreva aplikovali plazmu a n\u00e1sledne sme na oplazmovan\u00fa vzorku kvapli kvapku vody. Ihne\u010f sme odmerali kontaktn\u00fd uhol medzi kvapkou vody a povrchom dreva. Po nieko\u013ek\u00fdch opakovaniach sme zistili, \u017ee na oplazmovan\u00fdch vzork\u00e1ch je kontaktn\u00fd uhol men\u0161\u00ed, teda voda na oplazmovan\u00fd povrch dreva prilieha lep\u0161ie. Praktickou uk\u00e1\u017ekou sa n\u00e1m teda podarilo dosiahnu\u0165 n\u00e1\u0161 stanoven\u00fd cie\u013e.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Autor\/autori: Laura \u0160pakov\u00e1 Drevo, drevn\u00e9 kompozity, dreven\u00fd n\u00e1bytok, kon\u0161trukcie a in\u00e9 v\u00fdrobky z dreva \u010dasom podliehaj\u00fa po\u0161kodeniam vplyvom r\u00f4znych abiotick\u00fdch \u010dinite\u013eov (UV \u017eiarenie, kysl\u00edk, voda a in\u00e9) a biologick\u00fdch faktorov. T\u00fdmto po\u0161kodeniam m\u00f4\u017eeme zabr\u00e1ni\u0165 pomocou r\u00f4znych n\u00e1terov a prostriedkov na povrchov\u00fa \u00fapravu. Mnoh\u00e9 z nich s\u00fa v\u0161ak riedite\u013en\u00e9 len prchav\u00fdmi organick\u00fdmi rozp\u00fa\u0161\u0165adlami. Smernica Eur\u00f3pskeho parlamentu [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_uf_show_specific_survey":0,"_uf_disable_surveys":false,"footnotes":""},"categories":[6,7],"tags":[8,9],"class_list":["post-875","post","type-post","status-publish","format-standard","hentry","category-6","category-chemia","tag-8","tag-chemia"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Modifik\u00e1cia dreva plazmou - Festival vedy a techniky AMAVET<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.festivalvedy.sk\/wp2\/modifikacia-dreva-plazmou\/\" \/>\n<meta property=\"og:locale\" content=\"sk_SK\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Modifik\u00e1cia dreva plazmou - Festival vedy a techniky AMAVET\" \/>\n<meta property=\"og:description\" content=\"Autor\/autori: Laura \u0160pakov\u00e1 Drevo, drevn\u00e9 kompozity, dreven\u00fd n\u00e1bytok, kon\u0161trukcie a in\u00e9 v\u00fdrobky z dreva \u010dasom podliehaj\u00fa po\u0161kodeniam vplyvom r\u00f4znych abiotick\u00fdch \u010dinite\u013eov (UV \u017eiarenie, kysl\u00edk, voda a in\u00e9) a biologick\u00fdch faktorov. 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