| Titre : |
Defoaming : a primer |
| Type de document : |
texte imprimé |
| Auteurs : |
Bhupendra Singh, Auteur |
| Année de publication : |
2018 |
| Article en page(s) : |
p. 69-70 |
| Langues : |
Anglais (eng) |
| Catégories : |
Antimousse
Revêtements -- Additifs:Peinture -- Additifs
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
A Defoamer or an anti-foaming agent is a chemical additive that reduces and hinders the formation of foam in industrial process liquids. Commonly used agents are insoluble oils, polydimethylsiloxanes and other silicones, certain alcohols, stearates and glycols. The additive is used to prevent formation of foam or is added to break a foam which is already formed. We can make a distinction between macro and micro-foam. Macro-foam is often formed at the surface of the coating and micro-foam is entrapment of air bubbles that is not able to rise fast enough to the surface. For micro foam we need an air release agent to coagulate the micro bubbles to bigger air bubbles so they can rise faster to the surface to be destroyed. |
| Note de contenu : |
- What is foam ?
- How do defoamers work ?
- Choosing a defoamer : For waterborne systems |
| En ligne : |
https://drive.google.com/file/d/1wJdsPLI8X7eMn6QHlgMfGcDnJItwQzfy/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31061 |
in PAINTINDIA > Vol. LXVIII, N° 8 (08/2018) . - p. 69-70
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