| Titre : |
Leather property : water resistance |
| Type de document : |
texte imprimé |
| Auteurs : |
Karl Flowers, Auteur |
| Année de publication : |
2019 |
| Article en page(s) : |
p. 30-35 |
| Langues : |
Anglais (eng) |
| Catégories : |
Angle de contact
Cuirs et peaux -- Propriétés physiques
Emulsions
Perméabilité
Résistance à l'humidité:Résistance à l'eau
|
| Index. décimale : |
675 Technologie du cuir et de la fourrure |
| Résumé : |
The concept of making the surface of something not like water is central to malcing the water not want to move through the material's structure, and not want to stick to its surface. The way that water interacts with a material's surface is govemed by the force or attraction or repulsion between the water and the chemical molecules on (andin) a material's structure.
The contact angle between the water and the material surface illustrates how much, or how little, the water is attracted to the material. In Figure 1, the two extremes of the contact angle can be seen. Figure lA is the normal attraction seen between everyday objects and a droplet of water. The water flows out and seems to be attracted to the chemical molecules on the material surface; it can be said there is hydrophilic attraction. In Figure 1B, the opposite is seen. The water beads and seems to refuse to want to bind to the chemicals on the material surface; it can be said there is a hydrophobic repulsion. |
| Note de contenu : |
- Opens vs closed water resistance
- Factors affecting water resistance
- Emulsions
- Leather fibre structure
- Maeser flexibility
- Water vapour permeability (WVP)
- Getting the technology right
- Delivery and fix
- Is it worth it ?
- Fig. 1 : A) A hydrophilic reaction between water and a material surface B) A hydrophobic interaction between water and a material surface. Both show the angle, 0 (the contact angle) that goes from the middle of the droplet up to the outer edge of the water droplet.
- Fig. 2 : The difference between open (A) and closed (B) water repellence.
- Table 1 : Current industry methods that test the abilit yof a leather to resist water or water vapour |
| En ligne : |
https://drive.google.com/file/d/1R5HoOJKF6k4O0lmH_dxBPQVUdqER_-nW/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33138 |
in INTERNATIONAL LEATHER MAKER (ILM) > N° 38 (11-12/2019) . - p. 30-35
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Leather property : water resistance in INTERNATIONAL LEATHER MAKER (ILM), N° 38 (11-12/2019)
