Graffiti, ne\u017e\u00e1douc\u00ed p\u0159\u00edtomnost na povr\u0161\u00edch, p\u0159edstavuje jedine\u010dnou v\u00fdzvu k odstran\u011bn\u00ed. Nejb\u011b\u017en\u011bj\u0161\u00ed typ, sprej, obsahuje celou \u0159adu slou\u010denin, jako jsou polyuretany, laky a emaily. Ka\u017ed\u00e1 slou\u010denina vy\u017eaduje speci\u00e1ln\u00ed rozpou\u0161t\u011bdlo, kter\u00e9 rozbije jej\u00ed molekul\u00e1rn\u00ed vazby.<\/p>\n\n
Rozpou\u0161t\u011bdla, jako je butanon (MEK) a xylen, dok\u00e1\u017e\u00ed rozpustit sprej vytvo\u0159en\u00edm siln\u011bj\u0161\u00edch intermolekul\u00e1rn\u00edch vazeb s jeho slou\u010deninami, ne\u017e jsou vazby mezi barvou a povrchem. Rozpou\u0161t\u011bdla v\u0161ak mohou tak\u00e9 proniknout hloub\u011bji do povrchu a potenci\u00e1ln\u011b jej po\u0161kodit. Proto je d\u016fle\u017eit\u00e9 vyzkou\u0161et rozpou\u0161t\u011bdla na nen\u00e1padn\u00fdch m\u00edstech p\u0159ed jejich rozs\u00e1hl\u00fdm pou\u017eit\u00edm.<\/p>\n\n
Po o\u0161et\u0159en\u00ed rozpou\u0161t\u011bdlem mohou z\u016fstat zbytkov\u00e9 pigmenty barvy. Ty lze odbarvit pomoc\u00ed dezinfek\u010dn\u00edho prost\u0159edku do baz\u00e9nu, chlornanu v\u00e1penat\u00e9ho (Ca(OCl)2). Tato slou\u010denina je m\u00edrn\u011b z\u00e1sadit\u00e1, co\u017e ji d\u011bl\u00e1 bezpe\u010dnou jak pro povrchy citliv\u00e9 na kyseliny, tak pro povrchy citliv\u00e9 na z\u00e1sady. Komer\u010dn\u00ed odstra\u0148ova\u010de graffiti \u010dasto pou\u017e\u00edvaj\u00ed kombinaci \u010dinidel pro komplexn\u00ed p\u0159\u00edstup, jako je chlornan v\u00e1penat\u00fd, terpent\u00fdn, amoniak a ketony.<\/p>\n\n
P\u0159i pr\u00e1ci s historick\u00fdmi pam\u00e1tkami nebo cenn\u00fdmi budovami se odstra\u0148ov\u00e1n\u00ed graffiti st\u00e1v\u00e1 obzvl\u00e1\u0161t\u011b citliv\u00e9. N\u00e1rodn\u00ed park USA poskytuje podrobn\u00e9 pokyny pro odstra\u0148ov\u00e1n\u00ed n\u00e1t\u011br\u016f z historick\u00e9ho zdiva a zd\u016fraz\u0148uje pot\u0159ebu specializovan\u00fdch technik k zachov\u00e1n\u00ed integrity povrchu.<\/p>\n\n
Graffiti nen\u00ed modern\u00ed jev. \u0158\u00edman\u00e9 si na zdi psali vzkazy a dokonce i Stonehenge nese d\u016fkazy o starov\u011bk\u00e9m vandalismu. Ve Spojen\u00fdch st\u00e1tech m\u00e1 graffiti bohatou kulturn\u00ed historii a vyvinulo se od \u010dm\u00e1ranic na vag\u00f3nech metra po uzn\u00e1van\u00e9 um\u011bleck\u00e9 formy v galeri\u00edch.<\/p>\n\n
Digit\u00e1ln\u00ed laserov\u00e9 skeny byly pou\u017eity k odhalen\u00ed starov\u011bk\u00fdch graffiti na Stonehenge a poskytly cenn\u00e9 informace o minul\u00fdch civilizac\u00edch. Sprejov\u00e9 um\u011bn\u00ed, kdysi omezen\u00e9 na m\u011bstsk\u00e9 subkultury, z\u00edskalo uzn\u00e1n\u00ed v sou\u010dasn\u00fdch um\u011bleck\u00fdch prostorech a ukazuje kreativn\u00ed potenci\u00e1l spreje.<\/p>\n\n
P\u0159i odstra\u0148ov\u00e1n\u00ed graffiti v\u017edy up\u0159ednost\u0148ujte bezpe\u010dnost. Noste vhodn\u00e9 ochrann\u00e9 pom\u016fcky, v\u010detn\u011b rukavic a ochrany o\u010d\u00ed. Vyhn\u011bte se pou\u017e\u00edv\u00e1n\u00ed drsn\u00fdch chemik\u00e1li\u00ed nebo abrazivn\u00edch metod, kter\u00e9 by mohly po\u0161kodit povrchy. Otestujte rozpou\u0161t\u011bdla a b\u011blidla na mal\u00fdch ploch\u00e1ch p\u0159ed jejich pou\u017eit\u00edm ve v\u011bt\u0161\u00edm m\u011b\u0159\u00edtku.<\/p>\n\n
Odstra\u0148ov\u00e1n\u00ed graffiti je mnohostrann\u00fd proces, kter\u00fd vy\u017eaduje kombinaci chemick\u00fdch znalost\u00ed, citlivosti povrchu a historick\u00e9ho pov\u011bdom\u00ed. Pochopen\u00edm princip\u016f odstra\u0148ov\u00e1n\u00ed na b\u00e1zi rozpou\u0161t\u011bdel, b\u011blen\u00ed zbytkov\u00fdch pigment\u016f a specializovan\u00fdch technik pro historick\u00e9 povrchy m\u016f\u017eeme efektivn\u011b obnovit povrchy a z\u00e1rove\u0148 zachovat jejich integritu a kulturn\u00ed v\u00fdznam.<\/p>","protected":false},"excerpt":{"rendered":"
Odstra\u0148ov\u00e1n\u00ed graffiti: Chemick\u00fd p\u0159\u00edstup Pochopen\u00ed v\u00fdzvy Graffiti, ne\u017e\u00e1douc\u00ed p\u0159\u00edtomnost na povr\u0161\u00edch, p\u0159edstavuje jedine\u010dnou v\u00fdzvu k odstran\u011bn\u00ed. Nejb\u011b\u017en\u011bj\u0161\u00ed typ, sprej, obsahuje celou \u0159adu slou\u010denin, jako jsou polyuretany, laky a emaily. Ka\u017ed\u00e1…<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[23505],"tags":[8933,218,1845,712,23503,23504],"class_list":["post-17933","post","type-post","status-publish","format-standard","hentry","category-chemistry-in-conservation","tag-bleaching","tag-chemistry","tag-art-conservation","tag-historic-preservation","tag-graffiti-removal","tag-solvents"],"_links":{"self":[{"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/posts\/17933","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/comments?post=17933"}],"version-history":[{"count":1,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/posts\/17933\/revisions"}],"predecessor-version":[{"id":17934,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/posts\/17933\/revisions\/17934"}],"wp:attachment":[{"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/media?parent=17933"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/categories?post=17933"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/tags?post=17933"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}