[article]
| Titre : |
Wax emulsions for coatings |
| Type de document : |
texte imprimé |
| Auteurs : |
Harish Agrawal, Auteur ; Nimish Agrawal, Auteur |
| Année de publication : |
2021 |
| Article en page(s) : |
p. 80-94 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Cires
Emulsions
Revêtements (produits chimiques)
|
| Index. décimale : |
665.1 Cires |
| Résumé : |
A wax emulsion is a stable mixture of one or more waxes in water. Waxes and water are normally immiscible but can be brought together stably by the use of surfactants and a clever preparation process. Strictly speaking a wax emulsion should be called a wax dispersion since the wax is solid at room temperature. However, because the preparation takes place above the melting point of the wax, the actual process is called emulsification, hence the name wax emulsion.
Wax Emulsions or Wax dispersions are widely used for optimizing the final performance of coating & inks by efficiently controlling surface properties, even if used in relatively small quantifies < 5%, - waxes enhance properties such as water repellency, slip, abrasion resistance anti-blocking and other critical properties in paints, coating, leather, wood coatings, foundries and ink areas. |
| Note de contenu : |
- ORIGIN OF WAXES : Paraffin wax - PE wax - Characteristics & features (paraffin & PE wax) - OPE wax -oxidized polyethylene wax
- WAX EMULSION & WAX DISPERSION : Formation of wax emulsions depends upon the particle size and they are generally classified as - How emulsion is formed - Types of emulsions - Mechanisms of emulsification - How to stabilize wax emulsion - General specification for wax emulsions - Factors to be considered while formulating wax emulsions - Determination of the type of wax in a formulation - Typical wax effects in the formulations
- MECHANISM OF ACTION OF WAX EMULSIONS : The blooming mechanism - Softness in waxes - Molten blooming - The ball bearing mechanisms - Benefits of wax emulsions - Anti-blocking - Slip & mobility - Abrasion resistance - Water repellency - Touch & feel effect - Matting agent - Black heel marks - Types of wax emulsions
- APPLICATIONS OF WAX EMULSIONS : Architectural coatings - Inks application - Wood coatings - Concrete coatings - Metal coatings - OPV's & primers - Plastic coatings - Paper, film & foil coatings - Floor polish coatings - Wax emulsions coating on fruit
- Table 1 : Advantages and disadvantages of surfactant type
- Table 2 : Overview of the main waxes used in industrial application
- Table 3 : Typical wax effects |
| En ligne : |
https://drive.google.com/file/d/1ef2eow8-wBfUGL3zY9MPjo3rYziKblaa/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35239 |
in PAINTINDIA > Vol. LXXI, N° 2 (02/2021) . - p. 80-94
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