{"id":6190,"date":"2023-07-24T08:07:59","date_gmt":"2023-07-24T08:07:59","guid":{"rendered":"https:\/\/longchangchemical.com\/?p=6190"},"modified":"2026-04-28T10:42:19","modified_gmt":"2026-04-28T10:42:19","slug":"what-are-the-principles-and-applications-of-wetting-agents","status":"publish","type":"post","link":"https:\/\/longchangchemical.com\/fr\/what-are-the-principles-and-applications-of-wetting-agents\/","title":{"rendered":"Quels sont les principes et les applications des agents mouillants ?"},"content":{"rendered":"<h1><strong>Quels sont les principes et les applications des agents mouillants ?<\/strong><\/h1>\n<p><!-- lc-qa-start --><\/p>\n<p><strong>Quick answer:<\/strong> A practical additive decision starts with the exact defect: foam, poor wetting, craters, haze, or instability. The best product is usually the one that solves that defect with the safest compatibility window.<\/p>\n<p><!-- lc-qa-end --><\/p>\n<p><strong>I. Le concept d'agent mouillant<\/strong><br \/>\nLa caract\u00e9ristique fondamentale de la structure mol\u00e9culaire de l'agent mouillant est qu'une extr\u00e9mit\u00e9 de la mol\u00e9cule comporte un groupe hydrophile (segment de cha\u00eene), l'autre extr\u00e9mit\u00e9 comportant un groupe hydrophobe (segment de cha\u00eene) de la substance chimique. En termes g\u00e9n\u00e9raux, cela signifie que les mol\u00e9cules sont respectivement hydrophiles et hydrophobes.<br \/>\nLorsque la r\u00e9sine est une r\u00e9sine \u00e0 base d'eau, je comprends le m\u00e9canisme de mouillage (principalement pour les r\u00e9sines \u00e0 base d'eau) comme suit :<br \/>\nM\u00e9canisme : Lorsque la r\u00e9sine \u00e0 base d'eau est enduite sur la surface du substrat, une partie de l'agent mouillant se trouve au fond de l'enduit, en contact avec la surface \u00e0 mouiller, les segments de cha\u00eene lipophiles sont adsorb\u00e9s sur la surface solide et les groupes hydrophiles s'\u00e9tendent vers l'ext\u00e9rieur dans l'eau. Le contact entre l'eau et le substrat se transforme en un contact entre l'eau et les groupes hydrophiles de l'agent mouillant, formant une structure en sandwich avec l'agent mouillant comme couche interm\u00e9diaire. La phase aqueuse se r\u00e9pand plus facilement, ce qui permet d'atteindre l'objectif de mouillage. Une autre partie de l'agent mouillant existe \u00e0 la surface du liquide, son groupe hydrophile s'\u00e9tend \u00e0 l'eau liquide, les groupes hydrophobes sont expos\u00e9s \u00e0 l'air, la formation d'une couche d'une seule mol\u00e9cule r\u00e9duit la tension superficielle du rev\u00eatement, incitant le rev\u00eatement \u00e0 mieux mouiller le substrat, afin d'atteindre l'objectif de mouillage.<\/p>\n<p><strong>Deuxi\u00e8mement, quelle est la performance de mouillage des liquides ?<\/strong><br \/>\nLa performance de mouillage est une mesure de l'affinit\u00e9 des substances liquides pour les substances solides. Les principales formes de performance sont : a, la surface solide du mouillage ; b, la surface solide de l'\u00e9talement ; c, la surface solide de la p\u00e9n\u00e9tration.<br \/>\nEn d'autres termes, les bonnes propri\u00e9t\u00e9s de mouillage du liquide lui permettent de s'\u00e9taler facilement sur la surface solide et de p\u00e9n\u00e9trer facilement la surface solide de l'espace.<\/p>\n<p><strong>Troisi\u00e8mement, l'influence de la performance de mouillage des liquides du facteur intrins\u00e8que<\/strong><br \/>\nLa performance de mouillage est une forme d'expression relative, c'est-\u00e0-dire qu'elle d\u00e9pend des caract\u00e9ristiques du liquide et du solide, dont la plus importante est la taille relative de la tension superficielle du liquide et du solide. Plus la tension superficielle du liquide est faible, plus la tension superficielle du solide est \u00e9lev\u00e9e, meilleure est la performance de mouillage du liquide sur le solide, le liquide sera capable de bien s'\u00e9taler sur la surface du solide.<\/p>\n<p><strong>Quatri\u00e8mement, la mesure de la capacit\u00e9 de mouillage des liquides<\/strong><br \/>\nLa taille de la capacit\u00e9 de mouillage du liquide peut \u00eatre utilis\u00e9e pour \u00e9taler le liquide sur la surface solide, la formation de l'angle de contact \u03b8 pour mesurer. Plus l'angle de contact \u03b8 est petit, meilleure est la performance de mouillage du liquide sur le solide, \u03b8 est \u00e9gal \u00e0 z\u00e9ro, la meilleure performance de mouillage. O\u00f9 \u03b8 = 90\u00b0 est un param\u00e8tre important, car \u03b8  90\u00b0, le liquide ne peut plus se r\u00e9pandre spontan\u00e9ment dans la surface solide mouillante.<br \/>\nL'angle de contact peut \u00eatre calcul\u00e9 par la formule suivante : cos\u03b8= (\u03b3s-\u03b3sl)\/\u03b3l<br \/>\no\u00f9 :<br \/>\n\u03b3s est la tension superficielle du solide.<br \/>\n\u03b3l est la tension superficielle du liquide.<br \/>\n\u03b3sl est la tension interfaciale entre les surfaces liquides et solides. \u03b3sl est tr\u00e8s petite par rapport \u00e0 \u03b3s et \u03b3l, et peut parfois \u00eatre ignor\u00e9e dans les calculs.<br \/>\nOutre l'angle de contact \u03b8 pour mesurer la performance de mouillage, le coefficient d'\u00e9talement peut \u00e9galement \u00eatre utilis\u00e9 pour indiquer l'importance de la capacit\u00e9 de mouillage. Sa signification physique pour un certain volume de liquide peut \u00eatre l'aire de mouillage de la surface solide, exprim\u00e9e en cm2\/g. Plus le liquide est mouillant, plus la surface mouillante est grande. Le coefficient d'\u00e9talement est exprim\u00e9 en S, selon la formule suivante : S = \u03b3s - \u03b3sl - \u03b3l ; lorsque S est sup\u00e9rieur \u00e0 z\u00e9ro, le liquide peut mouiller spontan\u00e9ment la surface solide.<\/p>\n<p><strong>V. Facteurs affectant la capacit\u00e9 de mouillage<\/strong><br \/>\n1, la structure chimique et la composition du liquide et du solide \u00e0 mouiller. Elles affectent principalement la taille de la tension superficielle et la capacit\u00e9 de mouillage.<br \/>\n2, le degr\u00e9 de rugosit\u00e9 de la surface solide. Par exemple, \u03b8  90\u00b0, la rugosit\u00e9 de la surface augmente l'angle de contact devient plus grand et difficile \u00e0 mouiller.<br \/>\n3, le degr\u00e9 de contamination des surfaces solides. La pollution des surfaces solides n'est g\u00e9n\u00e9ralement pas propice au mouillage. Le substrat doit donc \u00eatre d\u00e9contamin\u00e9 avant le rev\u00eatement.<br \/>\n4, les surfactants. L'ajout de tensioactifs au liquide peut r\u00e9duire efficacement la tension superficielle et faciliter le mouillage.<br \/>\n5\u3001La temp\u00e9rature a un effet direct sur la tension superficielle du mat\u00e9riau, ce qui doit \u00eatre pris en compte dans les travaux pratiques.<\/p>\n<p><strong>Sixi\u00e8mement, l'application de la th\u00e9orie<\/strong><br \/>\nLa th\u00e9orie de base ci-dessus permet de conclure que la capacit\u00e9 du rev\u00eatement \u00e0 produire un effet mouillant sur le substrat d\u00e9pend de la tension superficielle du rev\u00eatement. Lorsque la tension superficielle du rev\u00eatement est \u00e9gale ou inf\u00e9rieure \u00e0 la tension superficielle du substrat solide, le rev\u00eatement s'\u00e9tale bien sur la surface solide.<br \/>\nIn practice, there is also a measure of the choice of wetting agent, and formulators often compare <a href=\"https:\/\/longchangchemical.com\/fr\/product\/chlumiwe-3280\/\">CHLUMIWE 3280 Wetting Agent<\/a> et <a href=\"https:\/\/longchangchemical.com\/fr\/product\/chlumiwe-3071-organic-silicone-surfactant-organosilicone-wetting-agent\/\">CHLUMIWE 3071 Wetting Agent<\/a> when they need to reduce coating surface tension and improve substrate wetting.<\/p>\n<p><strong>VII. Tableau des tensions superficielles de substances courantes<\/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\">mat\u00e9riel<\/td>\n<td class=\"et3\" style=\"width: 183.00pt;\" width=\"244\">tension superficielle<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\">L'eau<\/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\">Glycol<\/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-Xyl\u00e8ne<\/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\">Ac\u00e9tate d'\u00e9ther mono\u00e9thylique d'\u00e9thyl\u00e8ne glycol<\/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\">Ac\u00e9tate de n-butyle<\/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\">Rosine<\/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\">M\u00e9thylisobutylc\u00e9tone<\/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\">M\u00e9thyl\u00e9thylc\u00e9tone<\/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\">R\u00e9sine de m\u00e9lamine (type 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\">R\u00e9sine \u00e9poxy (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\">Acrylate de m\u00e9thyle polym\u00e9thylique<\/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% R\u00e9sine alkyde d'acide gras d'huile de soja<\/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\">R\u00e9sine alkyde sans huile<\/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\">Agent de nivellement Modaflow<\/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\">Fer-blanc (non rev\u00eatu\/rev\u00eatu)<\/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\">Acier trait\u00e9 au phosphate<\/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\">Primaire \u00e0 base de r\u00e9sine alkyde<\/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\">Verre<\/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\">Polym\u00e8re<\/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\">R\u00e9sine ur\u00e9e-formol<\/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\">Cellulose<\/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\">Polyacrylonitrile<\/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\">Oxyde de poly\u00e9thyl\u00e8ne<\/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\">Poly\u00e9thyl\u00e8ne t\u00e9r\u00e9phtalate<\/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\">Polysulfone<\/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\">Polym\u00e9thacrylate de m\u00e9thyle<\/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\">Chlorure de polyvinylid\u00e8ne<\/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\">Chlorure de polyvinyle<\/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\">Alcool polyvinylique Ac\u00e9tal<\/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\">Poly\u00e9thyl\u00e8ne chlorosulfon\u00e9<\/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\">Ac\u00e9tate de polyvinyle<\/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\">Alcool polyvinylique<\/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\">Polystyr\u00e8ne<\/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\">Polybutadi\u00e8ne (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\">Poly\u00e9thyl\u00e8ne<\/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\">Polyur\u00e9thane<\/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\">Chlorure de polyvinyle<\/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\">Butyral de polyvinyle<\/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\">Caoutchouc butyle<\/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\">Chlorure de polyvinylid\u00e8ne<\/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\">Polydim\u00e9thylsiloxane<\/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\">Polytrifluoro\u00e9thyl\u00e8ne<\/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\">Caoutchouc de silicone<\/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\">Polyt\u00e9trafluoro\u00e9thyl\u00e8ne<\/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\">Perfluoropropyl\u00e8ne<\/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\">M\u00e9thacrylate de perfluorooctyle<\/td>\n<td class=\"et2\" style=\"width: 183.00pt;\" width=\"244\">10.6<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><!-- lc-commercial-start --><\/p>\n<h2>A practical selection checklist for wetting, leveling, and defoaming additives<\/h2>\n<p>Additive selection is usually most effective when the team defines the defect first and then screens compatibility, dosage range, and process stage. That is often much more reliable than choosing only by chemistry family or by a single dramatic lab result.<\/p>\n<ul>\n<li><strong>Start from the defect, not the additive name:<\/strong> wetting loss, crater, microfoam, and instability often need different solutions even inside the same formula.<\/li>\n<li><strong>Check compatibility at the intended dosage:<\/strong> the strongest additive can still be the wrong commercial choice if it narrows the process window too much.<\/li>\n<li><strong>Review the stage of use:<\/strong> some products are most useful during grind, while others matter more during let-down, filling, or final application.<\/li>\n<li><strong>Balance cure or film quality with defect control:<\/strong> the right additive fixes the problem without sacrificing adhesion, gloss, or appearance.<\/li>\n<\/ul>\n<h3>Recommended product references<\/h3>\n<ul>\n<li><strong><a href=\"https:\/\/longchangchemical.com\/fr\/product\/chlumiwe-3280\/\">CHLUMIWE 3280<\/a>:<\/strong> A strong wetting-agent reference for inks, coatings, and difficult substrate wetting.<\/li>\n<li><strong><a href=\"https:\/\/longchangchemical.com\/fr\/product\/chlumiwe-3071-organic-silicone-surfactant-organosilicone-wetting-agent\/\">CHLUMIWE 3071<\/a>:<\/strong> Useful when organosilicone wetting support is needed in a broad application screen.<\/li>\n<li><strong><a href=\"https:\/\/longchangchemical.com\/fr\/product\/chlumiag-3000\/\">CHLUMIAG 3000<\/a>:<\/strong> A practical leveling and anti-sticking reference in UV coating and ink-related systems.<\/li>\n<li><strong><a href=\"https:\/\/longchangchemical.com\/fr\/product\/chlumiwe3345-silicone-leveling-agents-wetting-leveling-agents\/\">CHLUMIWE 3345<\/a>:<\/strong> A practical wetting-and-leveling reference when broader surface control is needed.<\/li>\n<\/ul>\n<h3>FAQ for buyers and formulators<\/h3>\n<p><strong>Why does an additive that looks powerful in a beaker sometimes fail in production?<\/strong><br \/>Because shear, temperature, substrate, and the full formula can all change the way the additive performs under real process conditions.<\/p>\n<p><strong>Should the most aggressive additive always be preferred?<\/strong><br \/>Not usually. The best additive is the one that solves the real defect while preserving the broadest safe operating window.<\/p>\n<p><!-- lc-commercial-end --><\/p>","protected":false},"excerpt":{"rendered":"<p>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),<\/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=\"description\" content=\"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 grou...\" \/>\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\/fr\/what-are-the-principles-and-applications-of-wetting-agents\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\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=\"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 grou...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/longchangchemical.com\/fr\/what-are-the-principles-and-applications-of-wetting-agents\/\" \/>\n<meta property=\"og:site_name\" content=\"Longchang Chemical\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-24T08:07:59+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-04-28T10:42:19+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2024\/02\/logo-jpeg.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1000\" \/>\n\t<meta property=\"og:image:height\" content=\"1000\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Longchang Chemical\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/longchangchemical.com\/what-are-the-principles-and-applications-of-wetting-agents\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/longchangchemical.com\/what-are-the-principles-and-applications-of-wetting-agents\/\"},\"author\":{\"name\":\"Longchang Chemical\",\"@id\":\"https:\/\/longchangchemical.com\/#\/schema\/person\/ecb1ad846136c6f1ca534b62978c6a8e\"},\"headline\":\"What are the principles and applications of wetting agents?\",\"datePublished\":\"2023-07-24T08:07:59+00:00\",\"dateModified\":\"2026-04-28T10:42:19+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/longchangchemical.com\/what-are-the-principles-and-applications-of-wetting-agents\/\"},\"wordCount\":1285,\"publisher\":{\"@id\":\"https:\/\/longchangchemical.com\/#organization\"},\"articleSection\":[\"Catalysts &amp; Chemical Auxiliary Agents\"],\"inLanguage\":\"fr-FR\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/longchangchemical.com\/what-are-the-principles-and-applications-of-wetting-agents\/\",\"url\":\"https:\/\/longchangchemical.com\/what-are-the-principles-and-applications-of-wetting-agents\/\",\"name\":\"What are the principles and applications of wetting agents? - Longchang Chemical\",\"isPartOf\":{\"@id\":\"https:\/\/longchangchemical.com\/#website\"},\"datePublished\":\"2023-07-24T08:07:59+00:00\",\"dateModified\":\"2026-04-28T10:42:19+00:00\",\"description\":\"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 grou...\",\"breadcrumb\":{\"@id\":\"https:\/\/longchangchemical.com\/what-are-the-principles-and-applications-of-wetting-agents\/#breadcrumb\"},\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/longchangchemical.com\/what-are-the-principles-and-applications-of-wetting-agents\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/longchangchemical.com\/what-are-the-principles-and-applications-of-wetting-agents\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/longchangchemical.com\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"What are the principles and applications of wetting agents?\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/longchangchemical.com\/#website\",\"url\":\"https:\/\/longchangchemical.com\/\",\"name\":\"Longchang Chemical\",\"description\":\"China chemical manufacturer \uff06 supplier\",\"publisher\":{\"@id\":\"https:\/\/longchangchemical.com\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/longchangchemical.com\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"fr-FR\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/longchangchemical.com\/#organization\",\"name\":\"Longchang Chemical\",\"url\":\"https:\/\/longchangchemical.com\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\/\/longchangchemical.com\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2020\/08\/cropped-longchang-logo.png\",\"contentUrl\":\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2020\/08\/cropped-longchang-logo.png\",\"width\":512,\"height\":512,\"caption\":\"Longchang Chemical\"},\"image\":{\"@id\":\"https:\/\/longchangchemical.com\/#\/schema\/logo\/image\/\"}},{\"@type\":\"Person\",\"@id\":\"https:\/\/longchangchemical.com\/#\/schema\/person\/ecb1ad846136c6f1ca534b62978c6a8e\",\"name\":\"Longchang Chemical\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\/\/longchangchemical.com\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/c1e84ee0759373263198c58e8f338f80?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/c1e84ee0759373263198c58e8f338f80?s=96&d=mm&r=g\",\"caption\":\"Longchang Chemical\"},\"sameAs\":[\"https:\/\/longchangchemical.com\"],\"url\":\"https:\/\/longchangchemical.com\/fr\/author\/infolongchangchemical-com\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Quels sont les principes et les applications des agents mouillants ? - Longchang Chemical","description":"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 grou...","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/longchangchemical.com\/fr\/what-are-the-principles-and-applications-of-wetting-agents\/","og_locale":"fr_FR","og_type":"article","og_title":"What are the principles and applications of wetting agents? - Longchang Chemical","og_description":"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 grou...","og_url":"https:\/\/longchangchemical.com\/fr\/what-are-the-principles-and-applications-of-wetting-agents\/","og_site_name":"Longchang Chemical","article_published_time":"2023-07-24T08:07:59+00:00","article_modified_time":"2026-04-28T10:42:19+00:00","og_image":[{"width":1000,"height":1000,"url":"https:\/\/longchangchemical.com\/wp-content\/uploads\/2024\/02\/logo-jpeg.jpg","type":"image\/jpeg"}],"author":"Longchang Chemical","twitter_card":"summary_large_image","schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/longchangchemical.com\/what-are-the-principles-and-applications-of-wetting-agents\/#article","isPartOf":{"@id":"https:\/\/longchangchemical.com\/what-are-the-principles-and-applications-of-wetting-agents\/"},"author":{"name":"Longchang Chemical","@id":"https:\/\/longchangchemical.com\/#\/schema\/person\/ecb1ad846136c6f1ca534b62978c6a8e"},"headline":"What are the principles and applications of wetting agents?","datePublished":"2023-07-24T08:07:59+00:00","dateModified":"2026-04-28T10:42:19+00:00","mainEntityOfPage":{"@id":"https:\/\/longchangchemical.com\/what-are-the-principles-and-applications-of-wetting-agents\/"},"wordCount":1285,"publisher":{"@id":"https:\/\/longchangchemical.com\/#organization"},"articleSection":["Catalysts &amp; Chemical Auxiliary Agents"],"inLanguage":"fr-FR"},{"@type":"WebPage","@id":"https:\/\/longchangchemical.com\/what-are-the-principles-and-applications-of-wetting-agents\/","url":"https:\/\/longchangchemical.com\/what-are-the-principles-and-applications-of-wetting-agents\/","name":"Quels sont les principes et les applications des agents mouillants ? - Longchang Chemical","isPartOf":{"@id":"https:\/\/longchangchemical.com\/#website"},"datePublished":"2023-07-24T08:07:59+00:00","dateModified":"2026-04-28T10:42:19+00:00","description":"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 grou...","breadcrumb":{"@id":"https:\/\/longchangchemical.com\/what-are-the-principles-and-applications-of-wetting-agents\/#breadcrumb"},"inLanguage":"fr-FR","potentialAction":[{"@type":"ReadAction","target":["https:\/\/longchangchemical.com\/what-are-the-principles-and-applications-of-wetting-agents\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/longchangchemical.com\/what-are-the-principles-and-applications-of-wetting-agents\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/longchangchemical.com\/"},{"@type":"ListItem","position":2,"name":"What are the principles and applications of wetting agents?"}]},{"@type":"WebSite","@id":"https:\/\/longchangchemical.com\/#website","url":"https:\/\/longchangchemical.com\/","name":"Longchang Chemical","description":"Fabricant chinois de produits chimiques \uff06 fournisseur","publisher":{"@id":"https:\/\/longchangchemical.com\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/longchangchemical.com\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"fr-FR"},{"@type":"Organization","@id":"https:\/\/longchangchemical.com\/#organization","name":"Longchang Chemical","url":"https:\/\/longchangchemical.com\/","logo":{"@type":"ImageObject","inLanguage":"fr-FR","@id":"https:\/\/longchangchemical.com\/#\/schema\/logo\/image\/","url":"https:\/\/longchangchemical.com\/wp-content\/uploads\/2020\/08\/cropped-longchang-logo.png","contentUrl":"https:\/\/longchangchemical.com\/wp-content\/uploads\/2020\/08\/cropped-longchang-logo.png","width":512,"height":512,"caption":"Longchang Chemical"},"image":{"@id":"https:\/\/longchangchemical.com\/#\/schema\/logo\/image\/"}},{"@type":"Person","@id":"https:\/\/longchangchemical.com\/#\/schema\/person\/ecb1ad846136c6f1ca534b62978c6a8e","name":"Longchang Chemical","image":{"@type":"ImageObject","inLanguage":"fr-FR","@id":"https:\/\/longchangchemical.com\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/c1e84ee0759373263198c58e8f338f80?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/c1e84ee0759373263198c58e8f338f80?s=96&d=mm&r=g","caption":"Longchang Chemical"},"sameAs":["https:\/\/longchangchemical.com"],"url":"https:\/\/longchangchemical.com\/fr\/author\/infolongchangchemical-com\/"}]}},"_links":{"self":[{"href":"https:\/\/longchangchemical.com\/fr\/wp-json\/wp\/v2\/posts\/6190","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/longchangchemical.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/longchangchemical.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/longchangchemical.com\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/longchangchemical.com\/fr\/wp-json\/wp\/v2\/comments?post=6190"}],"version-history":[{"count":7,"href":"https:\/\/longchangchemical.com\/fr\/wp-json\/wp\/v2\/posts\/6190\/revisions"}],"predecessor-version":[{"id":9733,"href":"https:\/\/longchangchemical.com\/fr\/wp-json\/wp\/v2\/posts\/6190\/revisions\/9733"}],"wp:attachment":[{"href":"https:\/\/longchangchemical.com\/fr\/wp-json\/wp\/v2\/media?parent=6190"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/longchangchemical.com\/fr\/wp-json\/wp\/v2\/categories?post=6190"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/longchangchemical.com\/fr\/wp-json\/wp\/v2\/tags?post=6190"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}