{"id":4931,"date":"2021-12-22T13:04:08","date_gmt":"2021-12-22T13:04:08","guid":{"rendered":"https:\/\/longchangchemical.com\/?p=4931"},"modified":"2026-04-28T10:41:54","modified_gmt":"2026-04-28T10:41:54","slug":"what-should-i-do-if-the-glass-plug-is-stuck","status":"publish","type":"post","link":"https:\/\/longchangchemical.com\/fr\/what-should-i-do-if-the-glass-plug-is-stuck\/","title":{"rendered":"Que dois-je faire si le bouchon de verre est coinc\u00e9 ?"},"content":{"rendered":"<!-- lc-qa-start -->\n<p><strong>Quick answer:<\/strong> For wetting, leveling, defoaming, and dispersing topics, formulators usually compare performance and side effects together because over-correcting one surface issue can easily create another.<\/p>\n<!-- lc-qa-end -->\n\n\n<p>La raison pour laquelle la prise de terre ne peut pas \u00eatre ouverte<\/p>\n\n\n\n<p>Au cours de la r\u00e9action de synth\u00e8se organique, il arrive que l'instrument de mise \u00e0 la terre se colle et ne puisse pas \u00eatre d\u00e9mont\u00e9. Une mauvaise manipulation endommagera l'instrument. En g\u00e9n\u00e9ral, il y a trois raisons pour lesquelles l'instrument ne s'ouvre pas, \u00e0 savoir 1. Lorsque la temp\u00e9rature de la fiole jaug\u00e9e est \u00e9lev\u00e9e, couvrir le bouchon de sol, couvrir le bouchon de sol lorsque la temp\u00e9rature ambiante est \u00e9lev\u00e9e, et ouvrir le bouchon de sol lorsque la temp\u00e9rature ambiante est basse. M\u00e9thode d'ouverture : chauffer lentement la fiole jaug\u00e9e (fiole triangulaire) avec de l'eau chaude pour g\u00e9n\u00e9rer une pression positive dans la bouteille. 2. Collage au niveau de la bouche de broyage : caus\u00e9 par un liquide \u00e0 haute viscosit\u00e9 : verser de l'eau chaude dans la bouche de broyage. Cause des substances facilement cristallis\u00e9es : verser de l'eau sur la bouche de broyage pour dissoudre les cristaux. Le piston de la burette d'acide est sec et solide. Verser rapidement de l'eau chaude sur l'ext\u00e9rieur du piston. Ne pas chauffer le piston \u00e0 la m\u00eame temp\u00e9rature et ouvrir le piston par expansion externe. 3. Liaison de la substance alcaline : Utiliser une mousse acide dilu\u00e9e pour dissoudre l'alcali. En r\u00e9sum\u00e9, lorsque le piston ne peut pas \u00eatre ouvert, diff\u00e9rentes m\u00e9thodes doivent \u00eatre adopt\u00e9es en fonction de diff\u00e9rentes raisons.<\/p>\n\n\n\n<p>M\u00e9thode g\u00e9n\u00e9rale<\/p>\n\n\n\n<p>Lorsque le piston de masse ne peut pas \u00eatre ouvert, il sera \u00e9cras\u00e9 s'il est viss\u00e9 fortement. Vous pouvez essayer les m\u00e9thodes suivantes :<\/p>\n\n\n\n<p>(1) Frapper un c\u00f4t\u00e9 de la partie fixe de la meule \u00e0 l'aide d'un outil en bois, de sorte que la partie fixe se d\u00e9tache progressivement et se s\u00e9pare sous l'effet des vibrations ;<\/p>\n\n\n\n<p>(2) Chauffer la couche externe de la bougie de broyage, utiliser de l'eau chaude, un s\u00e8che-cheveux \u00e9lectrique, un feu doux pour la cuire, et la tapoter de temps en temps ;<\/p>\n\n\n\n<p>(3) Ajouter quelques gouttes de liquide \u00e0 fort pouvoir de p\u00e9n\u00e9tration, tel que de l'\u00e9ther de p\u00e9trole ou une solution de surfactant dilu\u00e9e, dans l'espace fixe de la bouche de broyage. Parfois, l'ouverture est rapide, mais il faut parfois plusieurs jours pour que l'effet se fasse sentir.<\/p>\n\n\n\n<p>(4) Congeler au r\u00e9frig\u00e9rateur, puis retirer la tige en caoutchouc et la tapoter l\u00e9g\u00e8rement.<\/p>\n\n\n\n<p>Des mesures diff\u00e9rentes dans des situations diff\u00e9rentes<\/p>\n\n\n\n<ol class=\"wp-block-list\"><li>Frapper Utilisez un outil en bois pour frapper doucement un c\u00f4t\u00e9 de la bouche de broyage, afin qu'elle se d\u00e9tache progressivement sous l'effet des vibrations. Pour les flacons de r\u00e9actifs ciment\u00e9s, les bouchons broy\u00e9s des ampoules \u00e0 d\u00e9canter, etc., le bouchon et l'embouchure du flacon de l'instrument peuvent \u00eatre coll\u00e9s aux coins de la table d'exp\u00e9rimentation ou de la table en bois, puis les ustensiles en bois peuvent \u00eatre allum\u00e9s le long de la direction \u00e0 un angle d'environ 70\u00b0 par rapport \u00e0 l'axe de l'instrument. Tapez et faites tourner l'instrument par intermittence en m\u00eame temps. Des op\u00e9rations r\u00e9p\u00e9t\u00e9es de ce type plusieurs fois peuvent g\u00e9n\u00e9ralement ouvrir la bouche de broyage qui n'est pas fortement ciment\u00e9e.<\/li><li>Le chauffage de certaines bouches de broyage ciment\u00e9es n'est pas pratique pour frapper ou le fait de frapper n'est pas valable. La couche externe de la partie ciment\u00e9e peut \u00eatre chauff\u00e9e de mani\u00e8re \u00e0 ce qu'elle se dilate thermiquement et se s\u00e9pare de la couche interne. Par exemple, utiliser un chiffon humide et chaud pour \"comprimer \u00e0 chaud\" la zone de collage, utiliser un s\u00e8che-cheveux \u00e9lectrique ou une flamme de natation pour cuire la zone de broyage, etc.<\/li><li>Infiltration. Certaines bouches de broyage sont relativement fermes en raison de l'\u00e9rosion chimique, ou sont des instruments co\u00fbteux aux structures complexes. Elles ne conviennent pas pour frapper et chauffer. Elles peuvent \u00eatre ouvertes apr\u00e8s avoir \u00e9t\u00e9 tremp\u00e9es dans de l'eau ou de l'acide chlorhydrique dilu\u00e9 pendant plusieurs heures. Si l'instrument est utilis\u00e9 d'urgence, des solvants organiques \u00e0 fort pouvoir de p\u00e9n\u00e9tration (tels que le benz\u00e8ne, l'ac\u00e9tate d'\u00e9thyle, l'\u00e9ther de p\u00e9trole et le sulfosuccinate de dioctyle et de sodium, etc.) peuvent \u00e9galement \u00eatre ajout\u00e9s goutte \u00e0 goutte dans l'espace entre les bouches de broyage pour les faire p\u00e9n\u00e9trer et s'infiltrer jusqu'au b\u00e2ton. Les parties fixes sont ainsi s\u00e9par\u00e9es les unes des autres.<\/li><li>La vaseline et d'autres substances huileuses collent au piston. Vous pouvez utiliser un s\u00e8che-cheveux ou un feu l\u00e9ger pour le chauffer lentement afin de r\u00e9duire la viscosit\u00e9 de l'huile, ou taper sur le bouchon avec un b\u00e2ton en bois pour l'ouvrir apr\u00e8s l'avoir fait fondre. (2) Le piston ne restera pas longtemps coll\u00e9 \u00e0 cause de la poussi\u00e8re, il peut donc \u00eatre tremp\u00e9 dans l'eau, et il peut \u00eatre ouvert apr\u00e8s quelques heures.<\/li><li>Le piston coll\u00e9 \u00e0 la substance alcaline peut chauffer l'instrument dans de l'eau jusqu'\u00e0 \u00e9bullition, puis frapper le bouchon avec un b\u00e2ton de bois pour l'ouvrir.<\/li><li>Lorsque le bouchon du flacon de r\u00e9actif contenant le r\u00e9actif est ouvert, si le flacon contient des r\u00e9actifs corrosifs, tels que de l'acide sulfurique concentr\u00e9, etc., un f\u00fbt en plastique doit \u00eatre plac\u00e9 \u00e0 l'ext\u00e9rieur du flacon pour \u00e9viter qu'il ne se brise. L'op\u00e9rateur doit porter un masque en plexiglas. Approcher le visage trop pr\u00e8s de l'embouchure de la bouteille. Ouvrir le goulot des vapeurs toxiques (comme le brome liquide) sous une hotte. Une fois les pr\u00e9parations termin\u00e9es, tapotez le bouchon avec un b\u00e2ton de bois. Vous pouvez \u00e9galement laver la bouche du flacon, utiliser le flacon pour rincer un peu d'eau distill\u00e9e afin d'humidifier la bouche du broyeur, puis tapoter l\u00e9g\u00e8rement le bouchon du flacon.<\/li><li>Pour les bouchons de bouteille qui sont coinc\u00e9s en raison de la cristallisation ou du d\u00e9p\u00f4t de sels de m\u00e9taux alcalins et d'alcalis forts, le goulot de la bouteille peut \u00eatre tremp\u00e9 dans de l'eau ou de l'acide chlorhydrique dilu\u00e9, et il est possible de l'ouvrir apr\u00e8s un certain temps.<\/li><li>Placer la partie coinc\u00e9e du piston dans la cuve de nettoyage contenant de l'eau de la machine de nettoyage \u00e0 ultrasons, et ouvrir le piston par la vibration et la p\u00e9n\u00e9tration de l'onde ultrasonique. Cette m\u00e9thode fonctionne bien.<\/li><li>Infiltration de solvant organique. Utiliser un compte-gouttes pour ajouter une petite quantit\u00e9 de solvant organique (DMF ou ac\u00e9tone) dans la bouche de broyage. Lorsque le joint est rempli de solvant, essayez de le tourner.<\/li><li>Le confier au vitrier, le cuire avec une lampe \u00e0 ac\u00e9tyl\u00e8ne (derni\u00e8re astuce).<\/li><\/ol>\n\n\n\n<p>Cas particuliers<\/p>\n\n\n\n<ol class=\"wp-block-list\"><li>Pour les m\u00e9dicaments difficiles \u00e0 chauffer, vous pouvez ajouter une petite quantit\u00e9 d'eau distill\u00e9e ou d'eau pure sur le c\u00f4t\u00e9 du bouchon. Une fois que l'eau a p\u00e9n\u00e9tr\u00e9 dans le bouchon et dans le goulot du flacon, tenez le flacon avec votre main pendant un moment, puis vous pouvez l'ouvrir<\/li><li>Si le flacon contient des r\u00e9actifs corrosifs, tels que de l'acide sulfurique concentr\u00e9, un f\u00fbt en plastique doit \u00eatre plac\u00e9 \u00e0 l'ext\u00e9rieur du flacon pour \u00e9viter qu'il ne se brise. L'op\u00e9rateur doit porter un masque en plexiglas et ne pas approcher son visage trop pr\u00e8s de l'embouchure de la bouteille pendant l'op\u00e9ration.<\/li><li>Ouvrez le goulot de la bouteille de vapeur toxique pour l'utiliser sous une hotte. Apr\u00e8s la pr\u00e9paration, vous pouvez tapoter le bouchon avec un b\u00e2ton en bois ou laver le goulot de la bouteille. Utilisez la bouteille pour souffler un peu d'eau distill\u00e9e afin d'humidifier le sol, puis tapez sur le bouchon.<\/li><li>Si le bouchon \u00e0 vis ne peut pas \u00eatre d\u00e9viss\u00e9, vous pouvez utiliser un s\u00e8che-cheveux ou une petite flamme pour chauffer autour du bouchon afin de le faire gonfler sous l'effet de la chaleur, puis utiliser un chiffon pour envelopper le bouchon afin de le d\u00e9visser avec force. Si la bouteille contient des substances non chauffantes ou inflammables, vous pouvez prendre une corde solide et en attacher une extr\u00e9mit\u00e9 \u00e0 un objet fixe (comme les poign\u00e9es de porte et de fen\u00eatre), puis faire une boucle dans le sens des aiguilles d'une montre sur le bouchon de la bouteille, et la serrer d'une main.<\/li><\/ol>\n\n\n<!-- lc-commercial-start -->\n<h2>How buyers usually evaluate coating and ink 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\/chlumiaf-094\/\">CHLUMIAF 094<\/a>:<\/strong> A balanced defoamer reference for waterborne coatings and many general foam-control screens.<\/li>\n<li><strong><a href=\"https:\/\/longchangchemical.com\/fr\/product\/chlumiaf-3062\/\">CHLUMIAF 3062<\/a>:<\/strong> Useful when printing-ink and UV-ink compatibility matter in the defoaming screen.<\/li>\n<li><strong><a href=\"https:\/\/longchangchemical.com\/fr\/product\/chlumiaf-3037\/\">CHLUMIAF 3037<\/a>:<\/strong> A stronger process-defoaming option when persistent foam survives harsher conditions.<\/li>\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<\/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<!-- lc-commercial-end -->","protected":false},"excerpt":{"rendered":"<p>The reason why the ground plug can&#8217;t be opened In the process of organic synthesis reaction, sometimes the grounding instrument sticks together and cannot be disassembled. Improper handling will damage<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[114],"tags":[],"class_list":["post-4931","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 should I do if the glass plug is stuck? - Longchang Chemical<\/title>\n<meta name=\"description\" content=\"The reason why the ground plug can&#039;t be opened In the process of organic synthesis reaction, sometimes the grounding instrument sticks together and cann...\" \/>\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-should-i-do-if-the-glass-plug-is-stuck\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What should I do if the glass plug is stuck? 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