{"id":6190,"date":"2023-07-24T08:07:59","date_gmt":"2023-07-24T08:07:59","guid":{"rendered":"https:\/\/longchangchemical.com\/?p=6190"},"modified":"2023-07-24T08:07:59","modified_gmt":"2023-07-24T08:07:59","slug":"what-are-the-principles-and-applications-of-wetting-agents","status":"publish","type":"post","link":"https:\/\/longchangchemical.com\/de\/what-are-the-principles-and-applications-of-wetting-agents\/","title":{"rendered":"Was sind die Grunds\u00e4tze und Anwendungen von Netzmitteln?"},"content":{"rendered":"<h1><strong>Was sind die Grunds\u00e4tze und Anwendungen von Netzmitteln?<\/strong><\/h1>\n<p><strong>I. Der Begriff des Benetzungsmittels<\/strong><br \/>\nDas grundlegende Merkmal der Molek\u00fclstruktur des Netzmittels ist, dass ein Ende des Molek\u00fcls eine hydrophile Gruppe (Kettensegment) und das andere Ende eine hydrophobe Gruppe (Kettensegment) der chemischen Substanz aufweist. Allgemein ausgedr\u00fcckt bedeutet dies, dass die Molek\u00fcle hydrophil bzw. hydrophob sind.<br \/>\nWenn es sich um ein Harz auf Wasserbasis handelt, verstehe ich den Benetzungsmechanismus (haupts\u00e4chlich bei Harzen auf Wasserbasis) wie folgt:<br \/>\nMechanismus: Wenn das Harz auf Wasserbasis auf die Oberfl\u00e4che des Substrats aufgetragen wird, befindet sich ein Teil des Netzmittels an der Unterseite der Beschichtung, die mit der zu benetzenden Oberfl\u00e4che in Kontakt steht, die lipophilen Kettensegmente werden an der festen Oberfl\u00e4che adsorbiert, und die hydrophilen Gruppen reichen nach au\u00dfen in das Wasser. Der Kontakt zwischen dem Wasser und dem Substrat wird in einen Kontakt zwischen dem Wasser und den hydrophilen Gruppen des Benetzungsmittels umgewandelt, wodurch eine Sandwichstruktur mit dem Benetzungsmittel als Mittelschicht entsteht. Dadurch l\u00e4sst sich die Wasserphase leichter verteilen, so dass der Zweck der Benetzung erreicht wird. Ein anderer Teil des Benetzungsmittels befindet sich auf der Oberfl\u00e4che der Fl\u00fcssigkeit, seine hydrophile Gruppe erstreckt sich auf das fl\u00fcssige Wasser, hydrophobe Gruppen sind der Luft ausgesetzt, die Bildung einer Einzelmolek\u00fclschicht verringert die Oberfl\u00e4chenspannung der Beschichtung, wodurch die Beschichtung das Substrat besser benetzt, um den Zweck der Benetzung zu erreichen.<\/p>\n<p><strong>Zweitens, wie ist die Benetzungsleistung von Fl\u00fcssigkeiten<\/strong><br \/>\nDie Benetzungsleistung ist ein Ma\u00df f\u00fcr die Affinit\u00e4t von fl\u00fcssigen Stoffen zu festen Stoffen. Die wichtigsten Formen der Leistung sind: a, die feste Oberfl\u00e4che der Benetzung; b, in der festen Oberfl\u00e4che der Ausbreitung; c, in der festen Oberfl\u00e4che der Penetration.<br \/>\nEinfach ausgedr\u00fcckt, gute Benetzungseigenschaften der Fl\u00fcssigkeit ist leicht auf der festen Oberfl\u00e4che zu verbreiten, leicht auf die feste Oberfl\u00e4che der L\u00fccke zu durchdringen.<\/p>\n<p><strong>Drittens: Der Einfluss des intrinsischen Faktors auf die Benetzungsleistung von Fl\u00fcssigkeiten<\/strong><br \/>\nDie Benetzungsleistung ist eine relative Ausdrucksform, d. h., sie h\u00e4ngt von den Eigenschaften der Fl\u00fcssigkeit und des Festk\u00f6rpers selbst ab, wobei die wichtigste Eigenschaft die relative Gr\u00f6\u00dfe der Oberfl\u00e4chenspannung von Fl\u00fcssigkeit und Festk\u00f6rper ist. Je kleiner die Oberfl\u00e4chenspannung der Fl\u00fcssigkeit, je gr\u00f6\u00dfer die Oberfl\u00e4chenspannung des Festk\u00f6rpers, desto besser ist die Benetzungsleistung der Fl\u00fcssigkeit auf dem Festk\u00f6rper, die Fl\u00fcssigkeit kann sich gut auf der festen Oberfl\u00e4che verteilen.<\/p>\n<p><strong>Viertens, die Messung der Benetzungsf\u00e4higkeit von Fl\u00fcssigkeiten<\/strong><br \/>\nDie Gr\u00f6\u00dfe der Fl\u00fcssigkeit Benetzungsf\u00e4higkeit kann verwendet werden, um die Fl\u00fcssigkeit auf der festen Oberfl\u00e4che zu verbreiten, die Bildung der Kontaktwinkel \u03b8 zu messen. Je kleiner der Kontaktwinkel \u03b8, desto besser die Benetzungsleistung der Fl\u00fcssigkeit auf dem Festk\u00f6rper, \u03b8 ist gleich Null, die beste Benetzungsleistung. Wo \u03b8 = 90 \u00b0 ist ein wichtiger Parameter, weil \u03b8  90 \u00b0, kann die Fl\u00fcssigkeit nicht mehr feste Oberfl\u00e4che spontane Ausbreitung Benetzung werden.<br \/>\nDer Kontaktwinkel kann nach folgender Formel berechnet werden: cos\u03b8= (\u03b3s-\u03b3sl)\/\u03b3l<br \/>\nwo:<br \/>\n\u03b3s ist die Oberfl\u00e4chenspannung des Festk\u00f6rpers.<br \/>\n\u03b3l ist die Oberfl\u00e4chenspannung der Fl\u00fcssigkeit.<br \/>\n\u03b3sl ist die Grenzfl\u00e4chenspannung zwischen der fl\u00fcssigen und der festen Oberfl\u00e4che. \u03b3sl ist im Vergleich zu \u03b3s und \u03b3l sehr klein und kann bei Berechnungen manchmal ignoriert werden.<br \/>\nNeben dem Kontaktwinkel \u03b8 zur Messung der Benetzungsleistung kann der Ausbreitungskoeffizient auch zur Angabe der Gr\u00f6\u00dfe der Benetzungskapazit\u00e4t verwendet werden. Seine physikalische Bedeutung f\u00fcr ein bestimmtes Fl\u00fcssigkeitsvolumen kann in der Benetzungsfl\u00e4che der Festk\u00f6rperoberfl\u00e4che, ausgedr\u00fcckt in cm2\/g, liegen. Je besser die Benetzungsleistung der Fl\u00fcssigkeit ist, desto gr\u00f6\u00dfer ist die Benetzungsfl\u00e4che. Der Ausbreitungskoeffizient, ausgedr\u00fcckt in S, lautet die Formel: S = \u03b3s - \u03b3sl - \u03b3l; wenn S gr\u00f6\u00dfer als Null ist, kann die Fl\u00fcssigkeit spontan die feste Oberfl\u00e4che benetzen.<\/p>\n<p><strong>V. Faktoren, die die Benetzungsf\u00e4higkeit beeinflussen<\/strong><br \/>\n1, die chemische Struktur und Zusammensetzung der Fl\u00fcssigkeit und des zu benetzenden Feststoffs. Sie wirken sich haupts\u00e4chlich auf die Gr\u00f6\u00dfe der Oberfl\u00e4chenspannung aus und beeinflussen die Benetzungsf\u00e4higkeit.<br \/>\n2, der Grad der Rauheit der festen Oberfl\u00e4che. Zum Beispiel, \u03b8  90 \u00b0, die Oberfl\u00e4chenrauhigkeit erh\u00f6ht den Kontaktwinkel wird gr\u00f6\u00dfer und schwierig zu benetzen.<br \/>\n3, der Grad der Verschmutzung von festen Oberfl\u00e4chen. Die Verschmutzung fester Oberfl\u00e4chen ist in der Regel nicht f\u00f6rderlich f\u00fcr die Benetzung. Daher sollte das Substrat vor der Beschichtung dekontaminiert werden.<br \/>\n4, Tensid. Die Zugabe von Tensiden zu der Fl\u00fcssigkeit kann die Oberfl\u00e4chenspannung wirksam verringern und die Benetzung erleichtern.<br \/>\n5\u3001Die Temperatur hat einen direkten Einfluss auf die Oberfl\u00e4chenspannung des Materials, was bei der praktischen Arbeit ber\u00fccksichtigt werden sollte.<\/p>\n<p><strong>Sechstens, die Anwendung der Theorie<\/strong><br \/>\nAus der obigen grundlegenden Theorie l\u00e4sst sich schlie\u00dfen, dass es von der Oberfl\u00e4chenspannung der Beschichtung abh\u00e4ngt, ob sie einen Benetzungseffekt auf dem Substrat erzeugen kann. Wenn die Oberfl\u00e4chenspannung der Beschichtung gleich oder geringer als die Oberfl\u00e4chenspannung des festen Substrats ist, wird sie sich gut auf der festen Oberfl\u00e4che verteilen.<br \/>\nIn der Praxis gibt es auch ein Ma\u00df f\u00fcr die Wahl der Benetzungsmittel, sollten wir w\u00e4hlen, ein Benetzungsmittel, die effektiv reduzieren kann die Oberfl\u00e4chenspannung der Beschichtung zur Verbesserung der Selektivit\u00e4t des Materials.<\/p>\n<p><strong>VII. Oberfl\u00e4chenspannungstabelle \u00fcblicher Stoffe<\/strong><\/p>\n<table style=\"border-collapse: collapse; width: 355.52pt;\" border=\"0\" width=\"474\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et2\" style=\"height: 13.50pt; width: 172.50pt;\" width=\"230\" height=\"18\">Material<\/td>\n<td class=\"et3\" style=\"width: 183.00pt;\" width=\"244\">Oberfl\u00e4chenspannung<span class=\"font1\">[mN\/m{dyn\/cm}]<\/span><\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et2\" style=\"height: 13.50pt; width: 172.50pt;\" width=\"230\" height=\"18\">Wasser<\/td>\n<td class=\"et2\" style=\"width: 183.00pt;\" width=\"244\">72.2<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et2\" style=\"height: 13.50pt; width: 172.50pt;\" width=\"230\" height=\"18\">Glykol<\/td>\n<td class=\"et2\" style=\"width: 183.00pt;\" width=\"244\">48.4<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et2\" style=\"height: 13.50pt; width: 172.50pt;\" width=\"230\" height=\"18\">o-Xylol<\/td>\n<td class=\"et2\" style=\"width: 183.00pt;\" width=\"244\">30<\/td>\n<\/tr>\n<tr style=\"height: 27.00pt;\">\n<td class=\"et2\" style=\"height: 27.00pt; width: 172.50pt;\" width=\"230\" height=\"36\">Ethylenglykolmonoethyletheracetat<\/td>\n<td class=\"et2\" style=\"width: 183.00pt;\" width=\"244\">28.7<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et2\" style=\"height: 13.50pt; width: 172.50pt;\" width=\"230\" height=\"18\">n-Butylacetat<\/td>\n<td class=\"et2\" style=\"width: 183.00pt;\" width=\"244\">25.2<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et2\" style=\"height: 13.50pt; width: 172.50pt;\" width=\"230\" height=\"18\">Kolophonium<\/td>\n<td class=\"et2\" style=\"width: 183.00pt;\" width=\"244\">24<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et2\" style=\"height: 13.50pt; width: 172.50pt;\" width=\"230\" height=\"18\">n-Butanol<\/td>\n<td class=\"et2\" style=\"width: 183.00pt;\" width=\"244\">24.6<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et2\" style=\"height: 13.50pt; width: 172.50pt;\" width=\"230\" height=\"18\">Methylisobutylketon<\/td>\n<td class=\"et2\" style=\"width: 183.00pt;\" width=\"244\">23.6<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et2\" style=\"height: 13.50pt; width: 172.50pt;\" width=\"230\" height=\"18\">Methylethylketon<\/td>\n<td class=\"et2\" style=\"width: 183.00pt;\" width=\"244\">24.6<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et2\" style=\"height: 13.50pt; width: 172.50pt;\" width=\"230\" height=\"18\">Melaminharz (Typ HMMM)<\/td>\n<td class=\"et2\" style=\"width: 183.00pt;\" width=\"244\">58<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et2\" style=\"height: 13.50pt; width: 172.50pt;\" width=\"230\" height=\"18\">Epoxidharz (Epikote 828)<\/td>\n<td class=\"et2\" style=\"width: 183.00pt;\" width=\"244\">45<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et2\" style=\"height: 13.50pt; width: 172.50pt;\" width=\"230\" height=\"18\">Methylpolymethylacrylat<\/td>\n<td class=\"et2\" style=\"width: 183.00pt;\" width=\"244\">41<\/td>\n<\/tr>\n<tr style=\"height: 27.00pt;\">\n<td class=\"et2\" style=\"height: 27.00pt; width: 172.50pt;\" width=\"230\" height=\"36\">65% Sojabohnen\u00f6l-Fetts\u00e4ure-Alkydharz<\/td>\n<td class=\"et2\" style=\"width: 183.00pt;\" width=\"244\">37<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et2\" style=\"height: 13.50pt; width: 172.50pt;\" width=\"230\" height=\"18\">\u00d6lfreies Alkydharz<\/td>\n<td class=\"et2\" style=\"width: 183.00pt;\" width=\"244\">47<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et2\" style=\"height: 13.50pt; width: 172.50pt;\" width=\"230\" height=\"18\">Modaflow-Ausgleichsmittel<\/td>\n<td class=\"et2\" style=\"width: 183.00pt;\" width=\"244\">32<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et2\" style=\"height: 13.50pt; width: 172.50pt;\" width=\"230\" height=\"18\">Wei\u00dfblech (unbeschichtet\/beschichtet)<\/td>\n<td class=\"et2\" style=\"width: 183.00pt;\" width=\"244\"><span class=\"font1\">35~45<\/span><\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et2\" style=\"height: 13.50pt; width: 172.50pt;\" width=\"230\" height=\"18\">Phosphatbehandelter Stahl<\/td>\n<td class=\"et2\" style=\"width: 183.00pt;\" width=\"244\"><span class=\"font1\">40~45<\/span><\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et2\" style=\"height: 13.50pt; width: 172.50pt;\" width=\"230\" height=\"18\">Aluminium<\/td>\n<td class=\"et2\" style=\"width: 183.00pt;\" width=\"244\"><span class=\"font1\">37~45<\/span><\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et2\" style=\"height: 13.50pt; width: 172.50pt;\" width=\"230\" height=\"18\">Alkydharz-Grundierung<\/td>\n<td class=\"et2\" style=\"width: 183.00pt;\" width=\"244\">70<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et2\" style=\"height: 13.50pt; width: 172.50pt;\" width=\"230\" height=\"18\">Glas<\/td>\n<td class=\"et2\" style=\"width: 183.00pt;\" width=\"244\">70<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n<table style=\"border-collapse: collapse; width: 355.52pt;\" border=\"0\" width=\"474\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et2\" style=\"height: 13.50pt; width: 172.50pt;\" width=\"230\" height=\"18\">Polymer<\/td>\n<td class=\"et2\" style=\"width: 183.00pt;\" width=\"244\">Yc(<span class=\"font0\">\u8fbe\u56e0<\/span><span class=\"font2\">\/<\/span><span class=\"font0\">cm<\/span><span class=\"font2\">)<\/span><\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et2\" style=\"height: 13.50pt; width: 172.50pt;\" width=\"230\" height=\"18\">Harnstoff-Formaldehyd-Harz<\/td>\n<td class=\"et2\" style=\"width: 183.00pt;\" width=\"244\">61<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et2\" style=\"height: 13.50pt; width: 172.50pt;\" width=\"230\" height=\"18\">Zellulose<\/td>\n<td class=\"et2\" style=\"width: 183.00pt;\" width=\"244\">45<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et2\" style=\"height: 13.50pt; width: 172.50pt;\" width=\"230\" height=\"18\">Polyacrylnitril<\/td>\n<td class=\"et2\" style=\"width: 183.00pt;\" width=\"244\">44<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et2\" style=\"height: 13.50pt; width: 172.50pt;\" width=\"230\" height=\"18\">Polyethylen-Oxid<\/td>\n<td class=\"et2\" style=\"width: 183.00pt;\" width=\"244\">43<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et2\" style=\"height: 13.50pt; width: 172.50pt;\" width=\"230\" height=\"18\">Polyethylenterephthalat<\/td>\n<td class=\"et2\" style=\"width: 183.00pt;\" width=\"244\">43<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et2\" style=\"height: 13.50pt; width: 172.50pt;\" width=\"230\" height=\"18\">Nylon 66<\/td>\n<td class=\"et2\" style=\"width: 183.00pt;\" width=\"244\">42.5<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et2\" style=\"height: 13.50pt; width: 172.50pt;\" width=\"230\" height=\"18\">Nylon 6<\/td>\n<td class=\"et2\" style=\"width: 183.00pt;\" width=\"244\">42<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et2\" style=\"height: 13.50pt; width: 172.50pt;\" width=\"230\" height=\"18\">Polysulfon<\/td>\n<td class=\"et2\" style=\"width: 183.00pt;\" width=\"244\">41<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et2\" style=\"height: 13.50pt; width: 172.50pt;\" width=\"230\" height=\"18\">Polymethylmethacrylat<\/td>\n<td class=\"et2\" style=\"width: 183.00pt;\" width=\"244\">40<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et2\" style=\"height: 13.50pt; width: 172.50pt;\" width=\"230\" height=\"18\">Polyvinylidenchlorid<\/td>\n<td class=\"et2\" style=\"width: 183.00pt;\" width=\"244\">40<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et2\" style=\"height: 13.50pt; width: 172.50pt;\" width=\"230\" height=\"18\">Polyvinylchlorid<\/td>\n<td class=\"et2\" style=\"width: 183.00pt;\" width=\"244\">39<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et2\" style=\"height: 13.50pt; width: 172.50pt;\" width=\"230\" height=\"18\">Polyvinylalkohol Acetal<\/td>\n<td class=\"et2\" style=\"width: 183.00pt;\" width=\"244\">38<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et2\" style=\"height: 13.50pt; width: 172.50pt;\" width=\"230\" height=\"18\">Chlorsulfoniertes Polyethylen<\/td>\n<td class=\"et2\" style=\"width: 183.00pt;\" width=\"244\">37<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et2\" style=\"height: 13.50pt; width: 172.50pt;\" width=\"230\" height=\"18\">Polyvinylacetat<\/td>\n<td class=\"et2\" style=\"width: 183.00pt;\" width=\"244\">37<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et2\" style=\"height: 13.50pt; width: 172.50pt;\" width=\"230\" height=\"18\">Polyvinylalkohol<\/td>\n<td class=\"et2\" style=\"width: 183.00pt;\" width=\"244\">37<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et2\" style=\"height: 13.50pt; width: 172.50pt;\" width=\"230\" height=\"18\">Polystyrol<\/td>\n<td class=\"et2\" style=\"width: 183.00pt;\" width=\"244\">32.8<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et2\" style=\"height: 13.50pt; width: 172.50pt;\" width=\"230\" height=\"18\">Nylon 1010<\/td>\n<td class=\"et2\" style=\"width: 183.00pt;\" width=\"244\">32<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et2\" style=\"height: 13.50pt; width: 172.50pt;\" width=\"230\" height=\"18\">Polybutadien(cis)<\/td>\n<td class=\"et2\" style=\"width: 183.00pt;\" width=\"244\">32<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et2\" style=\"height: 13.50pt; width: 172.50pt;\" width=\"230\" height=\"18\">Polyethylen<\/td>\n<td class=\"et2\" style=\"width: 183.00pt;\" width=\"244\">31<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et2\" style=\"height: 13.50pt; width: 172.50pt;\" width=\"230\" height=\"18\">Polyurethan<\/td>\n<td class=\"et2\" style=\"width: 183.00pt;\" width=\"244\">29<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et2\" style=\"height: 13.50pt; width: 172.50pt;\" width=\"230\" height=\"18\">Polyvinylchlorid<\/td>\n<td class=\"et2\" style=\"width: 183.00pt;\" width=\"244\">28<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et2\" style=\"height: 13.50pt; width: 172.50pt;\" width=\"230\" height=\"18\">Polyvinylbutyral<\/td>\n<td class=\"et2\" style=\"width: 183.00pt;\" width=\"244\">28<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et2\" style=\"height: 13.50pt; width: 172.50pt;\" width=\"230\" height=\"18\">Butylkautschuk<\/td>\n<td class=\"et2\" style=\"width: 183.00pt;\" width=\"244\">27<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et2\" style=\"height: 13.50pt; width: 172.50pt;\" width=\"230\" height=\"18\">Polyvinylidenchlorid<\/td>\n<td class=\"et2\" style=\"width: 183.00pt;\" width=\"244\">25<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et2\" style=\"height: 13.50pt; width: 172.50pt;\" width=\"230\" height=\"18\">Polydimethylsiloxan<\/td>\n<td class=\"et2\" style=\"width: 183.00pt;\" width=\"244\">24<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et2\" style=\"height: 13.50pt; width: 172.50pt;\" width=\"230\" height=\"18\">Polytrifluorethylen<\/td>\n<td class=\"et2\" style=\"width: 183.00pt;\" width=\"244\">22<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et2\" style=\"height: 13.50pt; width: 172.50pt;\" width=\"230\" height=\"18\">Silikongummi<\/td>\n<td class=\"et2\" style=\"width: 183.00pt;\" width=\"244\">22<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et2\" style=\"height: 13.50pt; width: 172.50pt;\" width=\"230\" height=\"18\">Polytetrafluorethylen<\/td>\n<td class=\"et2\" style=\"width: 183.00pt;\" width=\"244\">18.5<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et2\" style=\"height: 13.50pt; width: 172.50pt;\" width=\"230\" height=\"18\">Perfluoropropylen<\/td>\n<td class=\"et2\" style=\"width: 183.00pt;\" width=\"244\">16.2<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et2\" style=\"height: 13.50pt; width: 172.50pt;\" width=\"230\" height=\"18\">Perfluorooctylmethacrylat<\/td>\n<td class=\"et2\" style=\"width: 183.00pt;\" width=\"244\">10.6<\/td>\n<\/tr>\n<\/tbody>\n<\/table>","protected":false},"excerpt":{"rendered":"<p>Was sind die Grunds\u00e4tze und Anwendungen von Netzmitteln? I. Das Konzept des Netzmittels Das grundlegende Merkmal der Molekularstruktur des Netzmittels ist, dass ein Ende des Molek\u00fcls eine hydrophile Gruppe (Kettensegment) und das andere Ende eine hydrophobe Gruppe (Kettensegment) der chemischen Substanz aufweist. Allgemein ausgedr\u00fcckt, [...]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[114],"tags":[],"class_list":["post-6190","post","type-post","status-publish","format-standard","hentry","category-catalysts-chemical-auxiliary-agents"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.3.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>What are the principles and applications of wetting agents? - Longchang Chemical<\/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:\/\/longchangchemical.com\/de\/what-are-the-principles-and-applications-of-wetting-agents\/\" \/>\n<meta property=\"og:locale\" content=\"de_DE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What are the principles and applications of wetting agents? - Longchang Chemical\" \/>\n<meta property=\"og:description\" content=\"What are the principles and applications of wetting agents? I. The concept of wetting agent The basic feature of the molecular structure of the wetting agent is that one end of the molecule has a hydrophilic group (chain segment), the other end has a hydrophobic group (chain segment) of the chemical substance. 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