{"id":18,"date":"2020-05-27T23:40:20","date_gmt":"2020-05-27T23:40:20","guid":{"rendered":"https:\/\/hotmelts.eu\/?page_id=18"},"modified":"2021-09-20T10:11:11","modified_gmt":"2021-09-20T10:11:11","slug":"reactive-pur","status":"publish","type":"page","link":"https:\/\/hotmelts.eu\/da\/reactive-pur\/","title":{"rendered":"Reaktiv PUR"},"content":{"rendered":"<p>Reaktive smeltelim er baseret p\u00e5 polyurethan (PUR).<\/p>\n\n\n\n<p>Sekvens af kl\u00e6bestofreaktionen<br>De fugth\u00e6rdende hotmelt-kl\u00e6bemidler binder sig via en totrinsreaktion:<\/p>\n\n\n\n<p>I det f\u00f8rste trin passerer kl\u00e6bemidlet gennem en fysisk h\u00e6rdningsmekanisme, der giver kl\u00e6bningen en vis styrke. Denne styrke er tilstr\u00e6kkelig til at muligg\u00f8re yderligere behandling eller transport.<\/p>\n\n\n\n<p>I det andet trin, som kan vare fra timer til dage, afh\u00e6ngigt af typen af kl\u00e6bemiddel, finder en kemisk post-tv\u00e6rbinding sted. Denne kemiske reaktion afh\u00e6nger af fugtindholdet og tilg\u00e6ngeligheden af kl\u00e6bemidlet til luftfugtighed. Efter at det hotmeltede kl\u00e6bemiddel har reageret, mister det sine termoplastiske egenskaber, dvs. det bliver ikke bl\u00f8dt igen, selvom genstanden, der skal limes, opvarmes. Det resulterende termoh\u00e6rdningsmiddel har us\u00e6dvanligt gode polyurethanadh\u00e6sionsv\u00e6rdier kombineret med h\u00f8j styrke, h\u00f8j varmebestandighed, god lavtemperaturfleksibilitet og god opl\u00f8sningsmiddelmodstand.<\/p>","protected":false},"excerpt":{"rendered":"<p>Reactive hot melt adhesives are based on polyurethane (PUR). Sequence of the adhesive reactionThe moisture-curing hotmelt [&hellip;]<\/p>","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"template-full-width.php","meta":{"footnotes":""},"class_list":["post-18","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Reactive PUR - Hotmelt adhesives<\/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:\/\/hotmelts.eu\/da\/reactive-pur\/\" \/>\n<meta property=\"og:locale\" content=\"da_DK\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Reactive PUR - Hotmelt adhesives\" \/>\n<meta property=\"og:description\" content=\"Reactive hot melt adhesives are based on polyurethane (PUR). 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