{"id":435,"date":"2021-10-26T04:46:00","date_gmt":"2021-10-26T02:46:00","guid":{"rendered":"https:\/\/www.buehnen.de\/blog\/?p=435"},"modified":"2021-10-11T15:02:11","modified_gmt":"2021-10-11T13:02:11","slug":"benetzung-oder-die-tropfenform-mit-randwinkel","status":"publish","type":"post","link":"https:\/\/www.buehnen.de\/blog\/benetzung-oder-die-tropfenform-mit-randwinkel\/","title":{"rendered":"Benetzung oder die Tropfenform mit Randwinkel"},"content":{"rendered":"\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p><em>Verhalten von Fl\u00fcssigkeiten (z. B. Schmelzklebstoff) bei Kontakt mit der Oberfl\u00e4che von Festk\u00f6rpern<\/em><\/p><\/blockquote>\n\n\n\n<p>Die\u00a0<strong>Benetzung der zu klebenden Substrate<\/strong>\u00a0ist eine grundlegende Voraussetzung, da nur ein Klebstoff, der\u00a0<strong>guten Kontakt zur Oberfl\u00e4che<\/strong>\u00a0hat, ausreichende\u00a0Adh\u00e4sionskr\u00e4fte\u00a0auf den Oberfl\u00e4chen aufbauen kann.<\/p>\n\n\n\n<p>Unser heutiges Fachwort zum Dienstag gibt es auch in der Natur zu entdecken.<\/p>\n\n\n\n<figure class=\"wp-block-gallery columns-2 is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\"><ul class=\"blocks-gallery-grid\"><li class=\"blocks-gallery-item\"><figure><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"860\" height=\"574\" src=\"https:\/\/i0.wp.com\/www.buehnen.de\/blog\/wp-content\/uploads\/2021\/10\/frauenmantel-3345677.jpg?resize=860%2C574&#038;ssl=1\" alt=\"\" data-id=\"436\" data-full-url=\"https:\/\/www.buehnen.de\/blog\/wp-content\/uploads\/2021\/10\/frauenmantel-3345677-scaled.jpg\" data-link=\"https:\/\/www.buehnen.de\/blog\/?attachment_id=436\" class=\"wp-image-436\" srcset=\"https:\/\/i0.wp.com\/www.buehnen.de\/blog\/wp-content\/uploads\/2021\/10\/frauenmantel-3345677-scaled.jpg?resize=1024%2C683&amp;ssl=1 1024w, https:\/\/i0.wp.com\/www.buehnen.de\/blog\/wp-content\/uploads\/2021\/10\/frauenmantel-3345677-scaled.jpg?resize=300%2C200&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.buehnen.de\/blog\/wp-content\/uploads\/2021\/10\/frauenmantel-3345677-scaled.jpg?resize=768%2C512&amp;ssl=1 768w, https:\/\/i0.wp.com\/www.buehnen.de\/blog\/wp-content\/uploads\/2021\/10\/frauenmantel-3345677-scaled.jpg?resize=1536%2C1024&amp;ssl=1 1536w, https:\/\/i0.wp.com\/www.buehnen.de\/blog\/wp-content\/uploads\/2021\/10\/frauenmantel-3345677-scaled.jpg?resize=2048%2C1365&amp;ssl=1 2048w, https:\/\/i0.wp.com\/www.buehnen.de\/blog\/wp-content\/uploads\/2021\/10\/frauenmantel-3345677-scaled.jpg?w=1720&amp;ssl=1 1720w\" sizes=\"auto, (max-width: 860px) 100vw, 860px\" \/><figcaption class=\"blocks-gallery-item__caption\">Frauenmantel mit Tautropfen<\/figcaption><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"860\" height=\"519\" src=\"https:\/\/i0.wp.com\/www.buehnen.de\/blog\/wp-content\/uploads\/2021\/10\/lotus-effect-1452667.jpg?resize=860%2C519&#038;ssl=1\" alt=\"\" data-id=\"437\" data-full-url=\"https:\/\/www.buehnen.de\/blog\/wp-content\/uploads\/2021\/10\/lotus-effect-1452667-scaled.jpg\" data-link=\"https:\/\/www.buehnen.de\/blog\/?attachment_id=437\" class=\"wp-image-437\" srcset=\"https:\/\/i0.wp.com\/www.buehnen.de\/blog\/wp-content\/uploads\/2021\/10\/lotus-effect-1452667-scaled.jpg?resize=1024%2C618&amp;ssl=1 1024w, https:\/\/i0.wp.com\/www.buehnen.de\/blog\/wp-content\/uploads\/2021\/10\/lotus-effect-1452667-scaled.jpg?resize=300%2C181&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.buehnen.de\/blog\/wp-content\/uploads\/2021\/10\/lotus-effect-1452667-scaled.jpg?resize=768%2C464&amp;ssl=1 768w, https:\/\/i0.wp.com\/www.buehnen.de\/blog\/wp-content\/uploads\/2021\/10\/lotus-effect-1452667-scaled.jpg?resize=1536%2C928&amp;ssl=1 1536w, https:\/\/i0.wp.com\/www.buehnen.de\/blog\/wp-content\/uploads\/2021\/10\/lotus-effect-1452667-scaled.jpg?resize=2048%2C1237&amp;ssl=1 2048w, https:\/\/i0.wp.com\/www.buehnen.de\/blog\/wp-content\/uploads\/2021\/10\/lotus-effect-1452667-scaled.jpg?w=1720&amp;ssl=1 1720w\" sizes=\"auto, (max-width: 860px) 100vw, 860px\" \/><figcaption class=\"blocks-gallery-item__caption\">Lotuseffekt auf einem Blatt<\/figcaption><\/figure><\/li><\/ul><figcaption class=\"blocks-gallery-caption\">Diese Tropfenbildung sind gute Beispiele f\u00fcr schlechte Benetzung.<\/figcaption><\/figure>\n\n\n\n<p>Je nach Oberfl\u00e4chenspannungsverh\u00e4ltnis zwischen Fl\u00fcssigkeit und F\u00fcgeteil findet man verschiedene Tropfenformen, die durch den sogenannten<strong>\u00a0Randwinkel \u03b1<\/strong>\u00a0charakterisiert sind. Der Randwinkel \u03b1 stellt also ein\u00a0<strong>Ma\u00df f\u00fcr die Benetzung<\/strong>\u00a0dar.<\/p>\n\n\n\n<p>Je kleiner der Randwinkel, umso besser die Benetzung. Mehr zum Thema <strong><a href=\"https:\/\/www.buehnen.de\/service\/glossar\/benetzung\" data-type=\"URL\" data-id=\"https:\/\/www.buehnen.de\/service\/glossar\/benetzung\">Benetzung<\/a><\/strong> findet Ihr in unserem Glossar.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Der Lotuseffekt h\u00e4lt Oberfl\u00e4chen sauber. Diese Form der Benetzung macht das Kleben nahezu unm\u00f6glich. Doch wie sollte die Benetzung sein?<\/p>\n","protected":false},"author":2,"featured_media":158,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[74,31,6],"tags":[33,19],"class_list":["post-435","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-fachwort-dienstag","category-glossar","category-klebstoffe","tag-glossar","tag-klebstoffe"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/www.buehnen.de\/blog\/wp-content\/uploads\/2021\/07\/Fachwort-Dienstag2.jpg?fit=900%2C250&ssl=1","jetpack_sharing_enabled":true,"jetpack_likes_enabled":true,"_links":{"self":[{"href":"https:\/\/www.buehnen.de\/blog\/wp-json\/wp\/v2\/posts\/435","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.buehnen.de\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.buehnen.de\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.buehnen.de\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.buehnen.de\/blog\/wp-json\/wp\/v2\/comments?post=435"}],"version-history":[{"count":1,"href":"https:\/\/www.buehnen.de\/blog\/wp-json\/wp\/v2\/posts\/435\/revisions"}],"predecessor-version":[{"id":438,"href":"https:\/\/www.buehnen.de\/blog\/wp-json\/wp\/v2\/posts\/435\/revisions\/438"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.buehnen.de\/blog\/wp-json\/wp\/v2\/media\/158"}],"wp:attachment":[{"href":"https:\/\/www.buehnen.de\/blog\/wp-json\/wp\/v2\/media?parent=435"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.buehnen.de\/blog\/wp-json\/wp\/v2\/categories?post=435"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.buehnen.de\/blog\/wp-json\/wp\/v2\/tags?post=435"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}